Laena, Dejean, 1821

Song, Xiao-Bin, Zhou, De-Yao, Chen, Zhi-Bing, Lin, Ming-Zhen & Zhu, Jian-Qing, 2019, First record of tribe Laenini (Coleoptera, Tenebrionidae, Lagriinae) from Shanghai, with description of a new species of the genus Laena Dejean, Zootaxa 4712 (1), pp. 90-100 : 94-98

Key to the known Laena species from China (exclude L. confusa ) modified from that of Schawaller (2008) and Wei & Ren (2018)

Since members of Laena are flightless, most of them are stenochoric, distribution is quite useful for a preliminary determination. Here we added type localities of all known Chinese species after their scientific name, respectively. Type localities of species described before 2001 were summarized by Schawaller (2001), except that of L. ovipennis Schuster, 1926 found in Schawaller & Aston 2017. Type localities of later species are found in their original descriptions ( Schawaller 2008; Schawaller & Aston 2017; Zhao & Ren 2012a; Zhao & Ren 2012b; Wei & Ren 2018; Makhan 2018).

Laena confusa Löbl & Schawaller, 2008 from Anhui Province was not included in the key, because the original description in Li & Wang, 1993 is inadequate to distinguish it from other species. Its type material was claimed to be deposited in the ‘ Coleoptera laboratory of Dashiqiao Agricultural Technology Popularization Center (ĽṪLƁ ŘṃwḣḋỮOEĿaeÜUDmOiẊṁ)’, but the author was unable to locate it.

1. Species from Xinjiang...................... L. leonhardi Schuster, 1916 (Xinjiang: Aksu prefecture; KYRGYZSTAN)

- Species from other provinces............................................................................ 2

2. Species from the south-eastern and south provinces Guizhou, Chongqing, Jangxi, Fujian, Guangxi, Hongkong, Zhejiang, Hain- an, Anhui and Shanghai................................................................................3

- Species from the western and central provinces Xizang (= Tibet), Sichuan, Yunnan, Shaanxi, Hubei, Gansu, Qinghai and Henan ................................................................................................... 15

3. Femora with distinct teeth, spines or angles.............. ................................................... 4

- Femora without armature..............................................................................8

4. Not all femora with teeth, spines or angles................................................................. 5

- All femora with teeth.................................................................................. 6

5. Only middle and posterior femora with spines. ....... .. L. hongkongica Schawaller & Aston, 2017 ( Hongkong: Lion Rock)

- Only anterior and middle femora with teeth...... L. armidenta Wei & Ren, 2018 (Anhui: Jixi County, Qingliangfeng N.R.)

6. At least anterior and middle femora with one tooth............... ............................................ 7

- All femora each with a pair of unequal teeth................................................................ 9

7 Posterior femora with a tooth............................................... L. dentatocrassa Zhao & Ren, 2012a .............................................................................. (Hainan: Jianfengling N.R.)

- Posterior femora without a pair of teeth...................... L. amrishi Makhan, 2018 (Chongqing: Jinyun Mountain)

8 Lateral margins of pronotum unbordered... ................ L. hlavaci Schawaller, 2008 (Jiangxi: Huanggang Mountain)

- Lateral margins of pronotum bordered..................... L. cooteri Schawaller, 2008 (Jiangxi: Huanggang Mountain)

9 Basal margin of pronotum nearly as wide as distal margin.................................................... 10

- Basal margin of pronotum distinctly narrower than distal margin............................................... 11

10 Pronotal lateral margins completely bordered, pronotum widest in anterior third....................................................................................... L. guangxica Schawaller, 2008 (Guangxi, Miao’er Mountain)

- Pronotal lateral margins not completely bordered, pronotum widest in Middle.................................. ................................................... .. L. walkeri Schawaller & Aston, 2017 ( Hongkong: Lung Fu Shan)

11 Pronotum widest in middle............................................ ................................. 12

- Pronotum widest anteriorly............................................................................ 14

12 Apex of aedeagal apicale not truncate.................................................................... 13

- Apex of aedeagal apicale truncate......................................................................... L. ovipennis Schuster, 1926 (Zhejiang: Da-laen-saen (possibly Dalei Shan near Ningbo City, see Schawaller & Aston 2017))

13 Eyes inconspicuously prominent........................ L. guizhouica Schawaller, 2008 (Guizhou: Leigong Mountain)

- Eyes distinctly prominent.......................... L. hongqiao sp. n. (Shanghai: Changning District, Shanghai Zoo)

14 Small body size (5.5–6.0 mm); aedeagus with triangular apicale................................................................................................... L. jiangxica Schawaller, 2008 (Jiangxi: Huanggang Mountain)

- Large body size (8.0– 8.5 mm); aedeagus with rounded tip of apicale ........................................................................................... L. fangjingshanana Ren & Hua, 2006 (Guizhou: Fanjing Mountain)

15 Outer side of middle tibiae with teeth................. ..... L. flectotibia Zhao & Ren, 2012b (Yunnan: Ailao Mountain)

- Outer side of middle tibiae without teeth.................................................................. 16

16 Pronotum with distinctly protruding anterior corners, thus pronotal margin with distinct convex excavation............ 17

- Pronotum without protruding anterior corners, anterior pronotal margin straight or at most weakly excavated........... 20

17 Lateral margins of pronotum unbordered........ .... L. quinquagesima Schawaller, 2008 (Yunnan: Haba Snow Mountain)

- Lateral margins of pronotum bordered................................................................... 18

18 Pronotal surface with distinct impression, elytral intervals flat with scattered fine punctures........................................................ L. basumtsoica Schawaller, 2008 (Xizang: Gongbo’gyamda County, near Pagsum Lake)

- Pronotal surface flat, without impressions, elytral intervals wrinkled with large and nearly confluent punctures.......... 19

19 Body length 7.0 mm, male posterior tibiae interiorly without granules, aedeagus with broad, spade-like apicale. ................................................................... L. janatai Schawaller, 2008 (Sichuan: Kangding City)

- Body length 6.0– 6.5 mm; male posterior tibiae interiorly with granules; aedeagus with longer apicale with knob-like tip....................................................... L. michaeli Schawaller, 2008 (Yunnan: Haba Snow Mountain)

20 Elytral interval VII keel-like and pronounced, lateral intervals VIII and IX not or indistinctly visible in dorsal view, internal intervals between these keel-like intervals flat or nearly flat................................................... 21

- Elytral interval VII not keel-like, sometimes interval VII distinctly convex or sometimes intervals III, V and VII convex, but interval VII not separating the joint elytra in a flat interior part and vertical lateral part............................. 32

21 All femora in both sexes with distinct teeth or angles........................................................ 22

- All femora in both sexes completely without armature....................................................... 24

22 Anterior femora each with two spines.. .......... ............... L. bidentata Zhao & Ren, 2012b (Sichuan: Hailuogou)

- Anterior femora each with one tooth or angle.............................................................. 23

23 All femora with distinct angles but without teeth, lateral margins of prontum unbordered and rounded.................. ...................................................... L. kubani Schawaller, 2001 (Yunnan: Haba Snow Mountain)

- All femora with distinct teeth, lateral margins of pronotum bordered................................................................................................... L. dabashanica Schawaller, 2008 (Hubei: Daba Mountain)

24 Elytral interval VII keel-like, swollen and knob-like in humeral region.......................................... 25

- Elytral interval VII keel-like over its total length and not swollen in humeral region....................................... 27

25 Elytra combined about twice as long as wide; elytra with rows of fine punctures extinguishing in the posterior part; elytral intervals dull and without setation; aedeagus with long apicale........... L. mirabilis Kaszab, 1970 (Sichuan: Kangding City)

- Elytra combined about 1.6 times as long as wide; elytra with rows of large punctures, elytral intervals shining and with adpressed setation; aedeagus with broad apicale.............................................................. 26

26 Body length 8.8–9.5 mm; elytral intervals wrinkled and with dense and coarse punctuation; posterior tibiae of males armed with spines.............................................. L. mulica Schawaller, 2001 (Sichuan: 20 km S Muli County)

- Body length 7.0– 7.5 mm; elytral intervals flat with fine punctuation; posterior tibiae of males without spines..................................... ........................... L. maowenica Schawaller, 2008 (Sichuan: Jiuding Mountain)

27 Body length 4.7–5.2 mm; lateral margins of pronotum crenulated.................................................................................................... L. yajiangica Schawaller, 2001 (Scichuan: Yajiang County)

- Body length over 6.0 mm; lateral margins of pronotum smooth................................................ 28

28 Pronotum besides impressions flat, so disc on same level as lateral margins...................................... 29

- Pronotum besides impressions more or less convex, so disc higher than lateral margins............................. 30

29 Base of pronotum with distinct impression (besides other impressions), base distinctly narrower than anterior margin with protruding anterior corners; apicale of aedeagus broad, spade-like. .............................................................................................. L. yulongica Schawaller, 2001 (Yunnan: Yulong Snow Mountain)

- Base of pronotum without distinct impression, base about as wide as anterior margin with rounded anterior corners; apicale of aedeagus longer, triangular............................ L. bowaica Schawaller, 2001 (Sichuan: 20 km S Muli County)

30 Pronotum and elytra shining; pronotum strongly convex with distinct lateral border, basal margin bent downwards; elytral rows with fine punctures.......................................... L. haigouica Schawaller, 2001 (Sichuan: Jiuzhaigou)

- Pronotum and elytra dull; pronotum feebly convex with marked but unbordered lateral margins, basal margin not bent downwards; elytral rows with large punctures.................................................................. 31

31 Base of pronotum distinctly narrower than anterior margin; punctures of elytral intervals as large as punctures of rows; apicale of aedeagus triangular............................ L. habashanica Schawaller, 2001 (Yunnan: Haba Snow Mountain)

- Base of pronotum about as wide as anterior margin; punctures of elytral intervals distinctly smaller than punctures of rows; apicale of aedeagus spade-like........................... L. schuelkei Schawaller, 2001 (Sichuan: Erlang Mountain)

32 All femora or at least anterior femora in both sexes medially with teeth or distinct angles........................... 33

- All femora without distinct modifications................................................................. 65

33 Elytra without setation in elytral rows and intervals......................................................... 34

- Elytra with long erected or short adpressed setae in elytral rows and or in elytral intervals.......................... 41

34 Only anterior femora with distinct angles, middle and posterior femora without armature......................................................... ........................ L. jinpingica Schawaller, 2008 (Sichuan: Jinping Mountain)

- All femora with distinct teeth.................................... ....................................... 35

35 Posterior tibiae of male without distinct modifications....................................................... 36

- Posterior tibiae of males with modifications (hooked interior apex or medially with tooth or dilatation)................ 39

36 Lateral margins of pronotum unbordered................................... ............................... 35

- Lateral margins of pronotum bordered................................................................... 38

37 Body length 6.2–7.5 mm, aedeagus with longer apicale with rounded finger-like tip. ..................................................................................... L. smetanai Schawaller, 2001 (Sichuan: Gongga Mountain)

- Body length 7.5–8.5 mm, aedeagus with broad apicale with blunt tip....... L. bohrni Schawaller, 2008 (Sichuan: Barkam)

38 Basal margin of pronotum distinctly narrower than distal margin, pronotum cordiform, aedeagus with longer triangular apicale; anterior femora of male of similar size as middle and posterior femora, anterior femora besides hook-like tooth with rounded anterior corner.............................................. L. chinensis Kaszab, 1965 (Yunnan: Jizu Mountain)

- Basal margins of pronotum as wide as distal margin, pronotum subquadrate; aedeagus with broader spade-like apicale; anterior femora of male extraordinary thick and besides broad tooth with additional tooth-like anterior corner.. ....................................................................... L. sehnali Schawaller, 2008 (Sichuan: ES Jiulong County)

39 Posterior tibiae of male with distinctly hooked inner apex, medial sides with granules; apicale of aedeagus about twice as long as wide........................................... L. turnai Schawaller, 2001 (Sichuan: 30 km NW Muli County)

- Posterior tibiae of male medially dilatated or with teeth, without granules; apicale of aedeagus subquadrate............. 40

40 Elytral intervals with distinct punctuation; male anterior tibiae with parallel inner sides; male posterior tibiae medially with tooth...................................................... L. tabanai Masumoto, 1998 (Sichuan: Puge County)

- Elytral intervals only with very fine and scattered punctures; male anterior tibiae medially with dilatation; male posterior tibiae medially with rounded dilatation............................. L. hubeica Schawaller, 2001 (Hubei: Shennongjia N.R.)

41 Only anterior femora with teeth, medial and posterior tibiae without modifications................................ 42

- All femora with teeth or at least with distinct angles......................................................... 43

42 Anterior tibiae of male with parallel-sided broadened anterior part; posterior tibiae of male without hooked inner apex............................................................ L. quadrata Zhao & Ren, 2012a (Xizang: Gyaca county)

- Anterior tibiae of males without modifications; posterior tibiae of male with hooked inner apex................................................................................ L. yasuakii Masumoto, 1996 (Yunnan: Jizu Mountain)

43 Trochanters of anterior and middle femora not prominent............... ...................................... 44

- Trochanters of anterior and middle femora distinctly prominent..................................................................................................... L. exjuncta Zhao & Ren, 2012b (Sichuan: Erlang Mountain)

44 Male dorsal side with green metallic shine.................. L. chiloriluxa Zhao & Ren, 2012a (Yunnan: Nabanhe N. R.)

- Male dorsal side without green metallic shine.............................................................. 45

45 Middle femora each with a pair of teeth....................... L. dentata Zhao & Ren, 2012a (Yunnan: Cang Mountain)

- Middle femora each with a tooth or angle................................................................. 46

46 Body length 9.3–9.6 mm, elytra with dense and large punctuation of intervals, so elytral intervals indistinct...................................................................... L. shaluica Schawaller, 2001 (Sichuan: Yajiang County)

- Body length less than 8.0 mm, elytra with distinct elytral rows and separated intervals............................. 47

47 Lateral margins of pronotum distinctly bordered.............. .............................................. 48

- Lateral margins of pronotum unbordered, sometimes feebly marked............................................ 52

48 Eyes prominent; pronotum cordiform with basal margin distinctly narrower than anterior margin; body length 6.6–7.9 mm .. .................................................................................................. 49

- Eyes not prominent; pronotum subquadrate with basal margin as wide as anterior margin; body length 3.5–6.0 mm....... 50

49 All tibiae with parallel broadened anterior part............... L. anglofemura Wei & Ren, 2018 (Sichuan: Baiyu County)

- Only anterior tibiae with parallel broadened anterior part..... L. angulifemoralis Masumoto, 1996 (Yunnan: Jizu Mountain)

50 Pronotum and elytra with long erected setation; apicale of aedeagus short and broad................................................................................. L. luguica Schawaller, 2001 (Sichuan: 15 km NW Muli County)

- Pronotum and elytra with short adpressed setation; apicale of aedeagus long and triangula........................... 51

51 Pronotum widest in middle................................................................................................ L. formaneki Schuster, 1916 (Xizang: Ngari Prefecture, near Poo Village in Himachal Pradesh, INDIA)

- Pronotum widest near anterior margin..................... L. farkaci Schawaller, 2008 (Yunnan: Haba Snow Mountain)

52 Pronotum with coarse, partly confluent punctuation, surface of pronotum wrinkled or uneven........................ 53

- Pronotum with fine punctuation, punctures always distinctly separated, surface of pronotum smooth................... 6

53 Odd-numbered elytral intervals distinctly convex; all femora with distinct teeth........................................................................................... L. ganzica Schawaller, 2001 (Sichuan: Erlang Mountain)

- All elytral intervals homogeneous, either all slightly convex or all flat; femora only with angles, angles of posterior femora partly reduced....................................................................................... 54

54 Pronotum subquadrate with basal margin as wide as anterior margin; male anterior tibiae medially with distinct tooth............................................................ L. ludingica Schawaller, 2001 (Sichuan: Erlang Mountain)

- Pronotum cordiform with basal margin narrower than anterior margin; male anterior tibiae without modification ......... 55

55 Elytral intervals densely scattered with large and confluent punctures; aedeagus with broad apicale with blunt tip................................................................. L. jizushana Schawaller, 2001 (Yunnan: Jizu Mountain)

- Elytral intervals with row of separated small punctures; aedeagus with triangular apicale............................................................................... L. yufengsi Schawaller, 2001 (Yunnan: Yulong Snow Mountain)

56 Pronotum and elytra with dull shagreened surface and with long, dense and erect setation........................... 57

- Pronotum and elytra with shining surface and with sparser short and adpressed setation............................. 58

57 Aedeagal apex broader, with constriction.............. L. hanzhongensis Wei & Ren, 2018 (Shaanxi: Liping Forest Park)

- Aedeagal apex narrower, without constriction......... L. qinlingica Schawaller, 2001 (Shaanxi: Qinling, Ningshan County)

58 Pronotum with fine and sparse punctuation; pronotal punctures distinctly smaller than punctures of the elytral rows.......................................................... L. lisuorum Schawaller, 2008 (Yunnan: Haba Snow Mountain)

- Pronotum with large punctures of similar size as those of elytral rows.......................................... 59

59 Pronotum cordiform, basal margin distinctly narrower than anterior margin...................................... 60

- Pronotum either subquadrate or trapezoid, basal margin as wide as or only slightly narrower than anterior margin........ 61

60 Elytra combined oval; aedeagus with longer triangular apicale...... L. wolongica Schawaller, 2001 (Sichuan: Wolong N.R.)

- Elytra combined longer and parallel; aedeagus with broad apicale with blunt tip................................................................................................. L. barkamica Schawaller, 2008 (Sichuan: Barkam)

61 Pronotum widest in middle............................................................................ 62

- Pronotum widest before middle (three quite similar species, compare body length, dorsal punctuation, setation and shape of aedeagus of distribution).............................................................................. 63

62 Body length 3.7–3.8 mm; posterior tibiae of male only with finely hooked inner apex; aedeagus with longer triangular apicale....................................................... L. daxueica Schawaller, 2008 (Sichuan: Kangding City)

- Body length 5.0 mm, posterior tibiae of male with finely hooked inner apex and medially swollen in middle; aedeagus with broader apicale with blunt apex............................. L. cylindrica Schawaller, 2001 (Xizang: Yadong County)

63 Body length above 5.5 mm.— Shaanxi and N Sichuan ................. L. fengileana Masumoto 1996 (Shaanxi: Qinling)

- Body length 3.0– 4.2 mm.—S Tibet and Yunnan ............................................................ 64

64 Punctures of elytral intervals smaller than pronotal punctures; punctures of elytral rows without setae, only elytral intervals with setae.—S Tibet .............................................. L. gracilis Schuster 1926 (Xizang: Yadong County)

- Punctures of elytral rows equal in size to pronotal punctures, each puncture bearing seta, intervals with row of fine punctures bearing similar seta.— Yunnan ...................... L. septuagesima Schawaller, 2008 (Yunnan: Haba Snow Mountain)

65 Small species (4.2–6.0 mm) with distinctly dull surface and pronotum with coarse and confluent punctuation........... 66

- Small and large species; if body length below 6.0 mm then with shining surface and pronotum with separated punctuation... .................................................................................................. 67

66 Elytral intervals III, V and VII distinctly but equally convex, other elytral intervals flat; lateral margins of pronotum marked and crenulated but unbordered; aedeagus with longer triangular apicale... L. davidi Schawaller, 2008 (Sichuan: Kangding City)

- Elytral intervals III and V slightly, VII distinctly convex, intervals with rows of distinct granules; lateral margins of pronotum not bordered and not marked; aedeagus with broad spade-like apicale............................................................................. L. gaoligongica Schawaller, 2008 (Yunnan: Nujiang Lisu Autonomous Prefecture)

67 Elytra (not pronotum) without any setation or with very short setation in elytral rows and intervals (setae not distinctly longer than diameter of punctures in rows)..................................................................... 68

- Elytra with distinct adpressed shorter or erect longer setation in elytral rows and intervals.......................... 98

68 Elytra with confused punctuation, surface not distinctly separated in elytral rows and intervals....................... 69

- Elytra always with distinct elytral rows and punctate or impunctate intervals, sometimes punctures in intervals as large as in rows, sometimes elytral rows vanished in posterior part of elytra.... ........................................... 71

69 Body length 5.5–6.2 mm; punctuation on pronotum and elytra distinctly separated, surface shining................................................................................ L. heinzi Schawaller, 2001 (Xizang: Shannan City)

- Body length 6.5–8.0 mm, punctuation on pronotum and elytra confluent, surface dull.............................. 70

70 Pronotum distinctly broader than long; elytra 1.5 times as long as wide, widest in posterior third........................................................................... L. businskyorum Schawaller, 2001 (Yunnan: Deqin County)

- Pronotum nearly as wide as long; elytra 1.8 times as long as wide, widest in middle; few differences, but no intermediate forms known................................................... L. deqenica Schawaller, 2001 (Yunnan: Deqin County)

71 Elytra intervals besides puncture rows with distinct punctuation, these punctures densely scattered and about half as large as punctures in rows........................................ L. safraneki Schawaller, 2001 (Xizang: Markam County)

- Elytral intervals between puncture rows without distinct punctuation or only with an indistinct row of very fine punctures... .................................................................................................. 72

72 Small species (4.4–6.6 mm) from Tibet with a flat and subquadrate pronotum, pronotal disc smooth and without impressions, lateral margins of pronotum bordered......... ............................................................ 73

- Smaller and larger species with different structures of pronotum; if with similar pronotum then not from Tibet, if from Tibet then with a different pronotum.......................................................................... 78

73 Male tibiae without secondary sexual characters............................................................ 74

- Anterior and/or posterior male tibiae with secondary sexual characters.......................................... 77

74 Pronotum without parallel lateral margins................................................................. 75

- Pronotum with parallel lateral margins; elytral punctures finer, distance always over 2 diameters; few differences, but no intermediate forms known..................................... L. parallelocollis Schuster, 1926 (Xizang: Kampa Dzong)

75 Elytral punctures larger............................................................................... 96

- Elytral punctures finer, apex of aedeagus with constriction. ... L. amplofemura Wei & Ren, 2018 (Xizang: Dinggyê County)

76 Apex of aedeagus without constriction; elytral apex blunt................................................................................................... L. alticola Blair, 1923 (Xizang: Tingri County, Rongbuk Monastery)

- Apex of aedeagus with indistinct constriction; elytral apex cuspidate.................................................................................................... L. punctulata Wei & Ren, 2018 (Xizang: Cuona County)

77 Anterior and posterior tibiae of males swollen medially; aedeagal apicale broad with blunt tip................................................................................ L. tuntalica Schawaller, 2001 (Xizang: Zogong County)

- Anterior tibiae of male slightly excavated medially; aedeagal apicale narrower and triangular................................................................................ L. cholanica Schawaller, 2001 (Xizang: Markam County)

78 Large species (7.8–10.3 mm) with long and parallel elytra, with flat subquadrate pronotum with bordered lateral margins, and with row of distinct spines interiorly in distal half of male posterior tibiae........................................ 79

- Large or smaller species with different combination of these characters.......................................... 82

79 Pronotum about 1.1–1.3 times as broad as long; apicale of aedeagus broad and with blunt tip........................ 80

- Pronotum about as wide as long; apicale of aedeagus triangular................................................ 81

80 Pronotum widest before middle; male anterior tibiae without modification................................................................................................. L. tryznai Schawaller, 2001 (Xizang: Markam County)

- Pronotum widest behind middle; male anterior tibiae excavated medially............................................................................................... L. kalabi Schawaller, 2008 (Sichuan: Xiangcheng County)

81 Pronotum with parallel sides; posterior tibiae of male besides spines distally somewhat swollen but without distinctly hooked inner apex................................................ L. dickorei Schawaller, 2001 (Xizang: Nedong County)

- Pronotum with rounded sides; posterior tibiae of male besides spines distally somewhat swollen and with distinctly hooked inner apex....................... L. gyamdaica Schawaller, 2001 (Xizang: Gongbo’gyamda County, near Pagsum Lake)

82 Lateral margins of pronotum completely unbordered and also not marked........................................83

- Lateral margins of pronotum completely or at least partly bordered............................................ 85

83 Body small-sized (3.8–4.8 mm); pronotum cordiform, basal margin distinctly narrower than anterior margin................................................................. L. diancangica Schawaller, 2001 (Yunnan: Cang Mountain)

- Body medium-sized (6.5–8.8 mm); pronotum round...... ................................................... 84

84 Anterior tibiae of male medially distinct teeth; elytra combined oval...................................................... L. schusteri (Heller 1923) (Sichuan: Waschan (Sic), perhaps Dawa Mountain or Wawu Mountain in Leshan City)

- Anterior tibiae of male without modification; elytra combined long and parallel ........................................................................ .................. L. hengduanica Schawaller, 2001 (Yunnan: Deqin County)

85 Posterior tibiae of male medially with distinct hump-like dilatation shortly before apex............................................................................. L. baishuica Schawaller, 2001 (Yunnan: Yulong Snow Mountain)

- Posterior tibiae of male with different modification or without secondary sexual characters.......................... 86

86 Posterior tibiae of male medially with a single spine shortly before apex............................................................................................ L. naxiorum Schawaller, 2008 (Yunnan: Haba Snow Mountain)

- Posterior tibiae of male with different modification or without secondary sexual characters.......................... 87

87 All tibiae in male without distinct modifications............................................................ 88

- Anterior and/or posterior tibiae in male modified........................................................... 92

88 Pronotum cordiform, basal margin of pronotum distinctly narrower than anterior margin............................ 89

- Pronotum broad, subquadrate or round, basal margin not distinctly narrower than anterior margin..................... 90

89 Body length 4.6 mm; aedeagus with long triangular apicale........ L. zogqenica Schawaller, 2001 (Sichuan: Dêgê County)

- Body length 6.0– 8.5 mm; aedeagus with spade-like apicale with blunt tip............................................................................................. L. fouquei Schawaller, 2008 (Yunnan: Haba Snow Mountain)

90 Pronotum flat and subquadrate.......................................................................... 91

- Pronotum convex and round................................... L. angmusica Schawaller, 2001 (Sichuan: Jiuzhaigou)

91 Pronotum with large but sparse punctuation; aedeagus with triangular apicale with acute tip................................................................................... L. alesi Schawaller, 2008 (Yunnan: Gongshan County)

- Pronotum with fine but dense punctuation; aedeagus with spade-like apicale with blunt tip.................................................................................. L. nyingchica Schawaller, 2001 (Xizang: Nyingchi City)

92 Elytral rows distinctly vanished in posterior part of elytra; elytral intervals distinctly shagreened and dull...................................................................... L. xuerensis Masumoto, 1996 (Yunnan: Cang Mountain)

- Elytral rows more or less complete; elytral intervals shining.................................................. 93

93 Pronotum cordiform, its base distinctly narrower than anterior margin.......................................... 94

- Pronotum round or subquadrate, its base more or less as wide as anterior margin.................................. 95

94 Body length 10.0– 11.5 mm; elytra with rows of punctures in distinct striae; posterior tibiae of male swollen in middle; apicale of aedeagus narrow and finger-like...... L. gigantea Schuster, 1940 (Sichuan: between Kangding City and Jiulong County)

- Body length 8.0–9.0 mm; elytra with rows of punctures without striae; posterior tibiae of male swollen interiorly at base; apicale of aedeagus broad spade-like............................ L. baiorum Schawaller, 2008 (Yunnan: Cang Mountain)

95 Basal margin of pronotum bent downwards, so this margin on distinctly deeper lever than disc............................................................................. L. kangdingica Schawaller, 2001 (Sichuan: Kangding City)

- Basal margin of pronotum not bent downwards, so this margin nearly on same level as disc......................... 96