Dentaneura, Song & Li & Dai, 2016

Song, YueHua, Li, ZiZhong & Dai, RenHuai, 2016, A remarkable new genus and species of Erythroneurini (Hemiptera: Cicadellidae: Typhlocybinae) from China, Florida Entomologist 99 (3), pp. 371-375 : 371-375

Dentaneura gen. nov.

Type species: Dentaneura henanensis sp. nov.

DIAGNOSIS

Head narrower than pronotum. Crown fore margin weakly produced medially, with pair of preapical spots. Face with frontoclypeus long and narrow, anteclypeus relatively broad. Pronotum with medial markings. Scutellum with basal triangles obvious. Forewing long and narrow, clavus with continuous vitta parallel to suture.

Male: Second sternal apodemes (2S) bladelike,extending 4th sternite.

Pygofer side broad, with single large dorsal macroseta, hind margin rounded, basolateral area without setae in distinct group, microsetae and microtrichia near caudal margin of lobe well developed. Pygofer dorsal appendage movably articulated, bifurcate near base, extended beyond pygofer apex, slightly curved downward in lateral view. Ventral appendage absent. Subgenital plate ( Fig. 8 ) short, not extended to apex of pygofer lobe, expanded at subbase, with 3 macrosetae along upper margin subbasally and 4 macrosetae forming row on lateral surface, upper marginal microsetae absent, with 2 strong teethlike setae apically, some microsetae scattered on distal and ventral area. Style ( Fig. 9 ) long and slender, footlike apically. Preapical lobe small but distinct, hooklike at apex. Connective ( Fig. 12 ) Y-shaped, central lobe present. Aedeagus ( Fig. 11 ) simple, with pair of short processes apically. Aedeagal shaf equal to or slightly shorter than preatrium. Preatrium expanded at base. Dorsal apodeme small in lateral view. Gonopore terminal, ventrad.

BIOLOGY

Species in this tribe feed on trees, shrubs, and grasses. Some species harm economic crops including apple, grape, cherry, hawthorn, pear, peach, mulberry, maple, and Lonicera . The body is small, the forewing and head ofen have bright coloration and distinct patterns.

DISTRIBUTION

Palearctic region.

1 Guizhou University, Institute of Entomology , Guiyang , Guizhou, 550025, China; E-mail: [e-mail] (YH. S.), [e-mail] (ZZ. L.), [e-mail] (RH. D.)

2 Guizhou Normal University, School of Karst Science , Guiyang , Guizhou, 550001, China

NOTES

The new genus resembles Arboridia ( Zachvatkin 1946) in the fol- lowing morphological characteristics: crown fore margin weakly produced medially, with paired preapical spots, scutellum with dark basal triangles. It is also somewhat similar to Tautoneura Anufriev, 1969 in the Y-shaped connective, with median anterior lobe, but can be distinguished from the formers by the pygofer with 1 dorsal macroseta, without macrosetae in group at basal lower angle; the subgenital plate very short, with 3 macrosetae at upper margin subbasally and 2 robust teethlike setae at apex, some rigid microsetae along upper margin disappeared; connective median anterior lobe present.

ETYMOLOGY

The generic epithet is derived from the noun “denta” and the suffix “-neura” in view of the subgenital plate with 2 strong teethlike setae at apex. The gender is feminine.

Updated Key to Genera of Erythroneurini from China (Modified from Song & Li 2014)

1.— Hind wing submarginal vein reduced, not fused with Cu1 vein............................................................. 2

1’.— Hind wing submarginal vein fused with Cu1 vein........................................................................ 3

2.— Head, thorax, and forewing with numerous spots and markings; pygofer with dorsal appendage only.......... Diomma Motschulsky

2’.— Head, thorax, and forewing without spots and markings; pygofer with dorsal and ventral appendage.......... Watara Dworakowska

3.— Anal tube with hooks or processes................................................................................... 4

3’.— Anal tube without hooks or processes................................................................................ 7’

4.— Pygofer lobe with several enlarged setae at basolateral angle............................................................. 5

4’.— Pygofer lobe without several enlarged setae at basolateral angle.......................................................... 7

5.— Pygofer microtrichia well developed............................................................... Raabeina Dworakowska

5’.— Pygofer microtrichia absent or inconspicuous.......................................................................... 6 6.— Pygofer ventral appendage absent................................................................. Gladkara Dworakowska

6’.— Pygofer ventral appendage present.................................................................... Thailus Mahmood

7.— Pronotum with single diamond-shaped impression medially.............................................................. 8

7’.— Pronotum without diamond-shaped impression medially................................................................ 11

8.— Pygofer lobe with 1–2 dorsal macrosetae.......................................................... Sanatana Dworakowska

8’.— Pygofer lobe without dorsal macrosetae............................................................................... 9

9.— Aedeagus fused to connective......................................................................... Andrabia Ahmed

9’.— Aedeagus articulated to connective................................................................................. 10

10.— Pygofer lobe with appendage.............................................................................. Thaia Ghauri

10’.— Pygofer lobe without appendage.................................................................. Niedoida Dworakowska

11.— Pygofer lobe with sparse long fine setae.............................................................................. 12

11’.— Pygofer lobe without sparse long fine setae......................................................... Kaukania Dworakowska

12.— Forewing with irregular red dots.................................................................... Tautoneura Anufriev

12’.— Forewing without irregular red dots................................................................................. 13

13.— Pygofer without dorsal appendage............................................................ Thapaia Dmitriev & Dietrich

13’.— Pygofer with dorsal appendage..................................................................................... 14

14.— Pygofer dorsal appendage movably articulated at base.................................................................. 15

14’.— Pygofer dorsal appendage not movably articulated at base........................................... Gambialoa Dworakowska

15.— Pygofer with oblique dorsolateral internal ridge........................................................ Kapsa Dworakowska

15’.— Pygofer without oblique dorsolateral internal ridge..................................................................... 16

16.— Pygofer lobe microtrichia well developed............................................................ Chagria Dworakowska

16’.— Pygofer lobe microtrichia disappeared or unobvious.................................................... Frutioidia Zachvatkin

17.— Forewing 4th apical cell extended to distal margin..................................................................... 18

17.— Forewing 4th apical cell not extended to distal margin.................................................................. 22

18.— Style apex bifurcate...................................................................... Irenaneura Cao, Huang & Zhang

18’.— Style apex unbranched............................................................................................ 19

19.— Pygofer inner side with 2 pairs of well pigmented separate lobes........................................ Variolosa Cao & Zhang

19’.— Pygofer inner side without lobes................................................................................. ∙∙∙20

20.— Preatrium of aedeagus with single large atrial process.................................................. Singapora Mahmood

20’.— Preatrium of aedeagus without atrial process......................................................................... 21

21.— Pygofer lobe with a strong appendage at caudal margin medially............................................ Fractata Song & Li

21’.— Pygofer lobe without any appendage at caudal margin................................................. Dentaneura gen. nov.

22.— Pygofer basolateral with macrosetae in distinct group.................................................................. 23

22’.— Pygofer basolateral without macrosetae in group...................................................................... 26

23.— Apex of scutellum without black spot................................................................................ 24

23’.— Apex of scutellum with single black spot.............................................................................. 25

24.— Style apex truncate.............................................................................. Coloana Dworakowska 24’.— Style apex slender.............................................................................. Ossuaria Dworakowska

25.— Subgenital plate with lamelliform process on inner lateral surface near apex and several long white fine setae at apex.. Plumosa Sohi

25’.— Subgenital plate without lamelliform process on inner lateral surface near apex, with several short stout setae at apex............................................................................................................ Davmata Dworakowska

26.— Hind wing with truncate apex....................................................................................... 27

26’.— Hind wing with rounded apex....................................................................................... 29

27.— Hind wing with RA vein............................................................................. ∙ Erythroneura Fitch

27’.— Hind wing without RA vein......................................................................................... 28

28.— 2S abdominal apodemes small, narrow, not exceeding 3rd sternite.................................. Gredzinskiya Dworakowska

28’.— 2S abdominal apodemes large, broad, exceeding 3rd sternite.............................................. Erythroneura Fitch

29.— Pygofer with dorsal and ventral appendage........................................................................... 30

29’.— Pygofer with dorsal or ventral appendage only or without appendage..................................................... 31

30.— Pygofer lobe with 1 or more dorsal macrosetae........................................................ Salka Dworakowska

30’.— Pygofer without dorsal macorsetae.................................................................... Alnetoidia Dlabola

31.— Crown fore margin weakly produced, rounded apically.................................................................. 32

31’.— Crown fore margin strongly produced, angulate medially................................................................ 36

32.— Pronotum with diamond-shaped impressions medially.................................................................. 33

32’.— Pronotum without diamond-shaped impressions medially............................................................... 34

33.— Pygofer without dorsal appendage.................................................................... Pseudothaia Kuoh

33’.— Pygofer with dorsal appendage............................................................... Matsumurina Dworakowska

34.— Scutellum with single black medial spot................................................................ Elbelus Mahmood

34’.— Scutellum without single black medial spot.......................................................................... 35

35.— Style preapical lobe cheliform.................................................................... Rufitidia Dworakowska

35’.— Style preapical lobe lamellalike..................................................................... Yakuza Dworakowska

36.— Style apex long and slender, tapering apically.......................................................................... 37

36’.— Characters not as above........................................................................................... 40

37.— Pygofer ofen with 1 or more dorsal macrosetae...................................................... Kabakra Dworakowska

37’.— Pygofer ofen without dorsal macrosetae............................................................................ 38

38.— 3S apodemes present and distinctive................................................................ Saccata Cao & Zhang

38’.— 3S apodemes absent.............................................................................................. 39

39.— Connective central lobe absent..................................................................... Kusala Dworakowska

39’.— Connective central lobe present.................................................................. Mitjaevia Dworakowska

40.— Pygofer with dorsal appendage.................................................................................... 41

40’.— Pygofer without dorsal appendage.................................................................................. 42

41.— Pygofer with single macroseta arising from caudal margin medially......................................... Laciniata Song & Li

41’.— Pygofer without macroseta arising from caudal margin....................................................... Duanjina Kuoh

42.— Connective with central lobe...................................................................................... 43

42’.— Connective without central lobe................................................................................... 46

43.— Pygofer lobe with numerous, conspicuous long fine setae..................................................... Zygina Fieber 43’.— Pygofer lobe without numerous, conspicuous long fine setae............................................................ 44

44.— Pygofer with oblique dorsolateral internal ridge....................................................................... 45

44’.— Pygofer without oblique dorsolateral internal ridge................................................ Lectotypella Dworakowska

45.— Vertex without spots............................................................................. Motaga Dworakowska

45’.— Vertex ofen with pair of preapical spots or large median apical spot..................................... Empoascanara Distant

46.— Style apex with 3 points......................................................................................... 47

46’.— Style apex truncate and expanded.................................................................................. 48 47.— Forewings with continuous zigzag pattern.............................................................. Ziczacella Anufriev

47’.— Forewings without continuous zigzag pattern.......................................................... Arboridia Zachvatkin

48.— Pygofer with macrosetae at basolateral angle......................................................................... 49

48’.— Pygofer without macrosetae at basolateral angle..................................................... Seriana Dworakowska

49.— Aedeagus with pair of long atrium processes; hindwing without RA vein..................................... Qadria Mahmood

49’.— Aedeagus without atrium processes; hindwing with RA vein.......................................... Anufrievia Dworakowska

Figures

Figs. 1–12. Dentaneura henanensis Song, Li & Dai sp. nov. (male). 1. Habitus, dorsal view; 2. habitus, lateral view; 3. face; 4. wings (forewing and hind wing); 5. abdominal apodemes; 6. head and thorax, dorsal view; 7. pygofer, lateral view; 8. subgenital plate; 9. style; 10. aedeagus, lateral view; 11. aedeagus, ventral view; 12. connective.