Maladera lignicolor ( Fairmaire, 1887 )

Fabrizi, Silvia, Liu, Wan-Gang, Bai, Ming, Yang, Xing-Ke & Ahrens, Dirk, 2021, A monograph of the genus Maladera Mulsant & Rey, 1871 of China (Coleoptera: Scarabaeidae: Melolonthinae: Sericini), Zootaxa 4922 (1), pp. 1-400 : 51-54

Maladera lignicolor ( Fairmaire, 1887)

Figures 10 A–D, 89

Serica lignicolor Fairmaire, 1887: 110 .

Autoserica lignicolor: Brenske 1897: 407 .

Maladera (Omaladera) lignicolor ( Fairmaire, 1887: 110) : Ahrens 2006b: 236, 2007b: 4 .

Autoserica laboriosa Brenske, 1897: 399 ; Nijima & Kinoshita 1927: 8; syn by Ahrens 2007b: 4.

Aserica laboriosa: Murayama 1938: 12 .

Serica laboriosa: Murayama 1954: 43 .

Maladera laboriosa: Nomura 1965: 142 ; Nomura 1974: 107; Kim & Kim 2003: 90.

Aserica fusiana Murayama, 1934: 35 ; syn by Ahrens 2007b: 4.

Serica fusiana: Murayama 1954: 38 .

Maladera fusiana: Kim & Lee 1997: 125 ; Kim & Kim 2003: 88.

Serica tenebrosa Frey, 1972a: 166 ; syn by Ahrens 2007b: 4.

Type material examined. See Ahrens (2007b). Paralectotypes ( laboriosa ): 1 ♂ “Kiukiang May 1887 A.E. Pratt / Coll. Kraatz / Syntypus / laboriosa ♂ Type Brsk.” ( DEIC) , 1 ♀ “Kiukiang May 1887 A.E. Pratt / laboriosa 10. Brsk.” ( ZMHB) , 3 ♀♀ “Kiukiang May 1887 A.E. Pratt ” ( ZMHB) .

Additional material examined. China: 1 ♂ “ China: Liaoning Sinica Shifangoding Kuandah county, 5.VI.1997 ” ( ZFMK), 5 ex. “ China: Fujian Province: Mt. Liang-shan-ding, Wuping county , July 2-13 2009 local collectors Ankauf via Li Jingke 2010” ( ZFMK), 1 ex. S. Korea v.1990 Jangsungpo K. Zahradka lgt.” ( ZFMK) , 1 ♂ “ Fukien, S. China, Shaowu , Tachuland 31.v.1942 / T.C. Maa Bishop Museum” ( BMH) , 1 ex. “ Kuatun (2300 m) 27, 40 n . Br. 117,40 ö. L. J. Klapperich 29.4. 1938 (Fukien)/ ex. Coll. V. Balthasar National Museum Prague, Czech Republic ” ( NMPC), 1 ex. “ Kuatun (2300 m) 27, 40 n. Br. 117,40 ö. L. J. Klapperich 18.5. 1938 (Fukien)/ ex. Coll. V. Balthasar National Museum Prague, Czech Republic ” ( NMPC), 3 ex. “ China-Guizhou 21-26.V. 60 km N of Kaili, 1995 Shibing-Yuntai Shan E. Jendek & O. Šauša ” ( CP), 7 ex. “ China : S-Hubei Mupushan Tangshan vi.2004 leg. Wen ” ( ZFMK), 1 ex. “ China : Sichuan; Wolong Reserve , Sigulian Shan , 31°09‘N 103°06‘E v.2006, 1500-1800m leg. V. Siniaev ” ( ZFMK), 7 ex. “ Jiugongshan Tongshan, S-Hubei, 1.V.2004, Leg. Wen ” ( ZFMK) , 1 ex. “ Mt. Omei, Kiating Szechuan China VII-1-32/ G.M. Franck Collector ” ( USNM) , 1 ex. “ China ” ( USNM) , 8 ex. “ Hangchow China IX- XI-. 1924 Coll. H.A. Jaynes ” ( USNM), 1 ex. “ Mingpo China VI-23 1925 Coll. H.A. Jaynes ” ( USNM), 1 ex. “ Mingpo China Em. VIII-18‘25 no D” ( USNM) , 6 ex. “ Shanghai China / E Deschamps Collector ” ( USNM) , 2 ex. “ Suifu Szechuen China 1920/ DC Graham Collector ” ( USNM) , 2 ex. “ Szechwan China DC Graham VI-1-20 alt 1700ft. / Chengtu 1933” ( USNM) , 1 ex. “ Szechwan China DC Graham / Alt. 6000 ft. Aug. 1938 ” ( USNM) , 1 ex. “ Szechwan China DC Graham 1700ft. ” ( USNM), 1 ♂ “ Longwang Shan Zhejiang Prov. 3-X-2003 Li-Zhen Li leg.” ( SNUC), 1 ♂ “China: Shanghai VI.1962 ” ( SNUC), 1 ♂ “ China: Zhejiang, Lin‘an City West Tianmu Shan , VI.1986 ” ( SNUC) , 1 ♂ “ China: Zhejiang Prov. Qingliangfeng Mt. Longtangshan 30°06’N, 118°53’E / alt. 500m 21-V-2012 Chen, Ma & Zhao leg.” ( SNUC) , 3 ♂♂ “ China : An‘hui Yuexi County Yaoluoping N.R. nr. resort 30°59‘05‘‘N, 116°04‘41‘‘E light trap alt. 1050m 16.vi.2013 Dai & Peng leg.” ( SNUC) , 1 ♂ “ Fokien Yun-ling-shan Koateng ” ( ZMHB) , 1 ♂, 2 ♀♀ “ Kiautschou China ” ( ZMHB) , 2 ex. “ China: Guangdong prov. Nanling National Nature Reserve Dadongshan, 18.-21.iv.2013 (border of mixed forest, at light) 24°56.0’N, 112°42.9’E, 690 m J. Hájek & J. Růžicka ” ( ZFMK), 4 ex. “ China Foochow 1935- 6 M. S. Yang ” ( BMNH). North Korea: 2 ex. “ Siniju N. Korea 18.IV.1994 Lee J. Kha ” ( ZFMK). South Korea: 1 ex. “S. Korea V.1990 Jangsungpo K. Zahradka lgt.” ( ZFMK), 1 ex. “ 24.06.2010 Hwasong Suwon (Südkorea) leg. T. Kölkebeck ” ( ZFMK) , 1 ♂ “ Korea Chempulo ” ( ZMHB) .

Redescription. Length: 8.4 mm, length of elytra: 5.8 mm, width: 4.7 mm. Body oval, dark brown, dull, antenna yellow, labroclypeus moderately shiny, glabrous except for a few short setae on head and lateral margins of pronotum and elytra.

Labroclypeus trapezoidal, distinctly wider than long, widest at base, lateral margins weakly convex and strongly convergent to moderately rounded anterior angles, lateral margin and ocular canthus producing an indistinct angle; margins weakly reflexed; anterior margin moderately emarginate medially; surface strongly convex medially, shiny, coarsely and densely punctate, partly rugosely, with a few erect setae anteriorly; frontoclypeal suture feebly incised and weakly bent medially; smooth area anterior to eye twice as wide as long; ocular canthus short and wide (1/4 of ocular diameter), finely scarcely punctate, without terminal seta. Frons dull, with fine, dense punctures, with a few single setae beside eyes. Eyes small, ratio of diameter/ interocular width: 0.5. Antenna with ten antennomeres; club with three antennomeres, 0.8 times as long as remaining antennomeres combined. Mentum elevated and flattened anteriorly.

Pronotum trapezoidal, widest at base, lateral margins weakly evenly convex and narrowed towards strongly produced and sharp anterior angles; posterior angles blunt; anterior margin nearly straight, with complete and fine marginal line; basal margin without marginal line; surface finely and densely punctate, punctures with microscopic setae only; anterior and lateral margins sparsely setose; hypomeron carinate but not produced ventrally. Scutellum wide, triangular, with fine and dense punctures.

Elytra oblong, widest in posterior third, striae weakly impressed, finely and sparsely punctate, intervals weakly convex, with fine, sparse and evenly distributed punctures; glabrous, punctures with minute setae only; epipleural margin robust, ending at widely rounded external apical angle of elytra, epipleura sparsely setose; apical border membraneous, with a rim of short microtrichomes.

Ventral surface dull, metasternum and metacoxa with large and dense punctures, sparsely setose; metacoxa glabrous except for numerous long setae laterally; abdominal sternites finely and densely punctate, some punctures with very short or minute setae, each sternite with a distinct transverse row of coarse punctures each bearing a short seta, penultimate sternite apically with a wide shiny smooth chitinous border of half sternite length. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.5. Pygidium moderately convex, dull, finely and moderately densely punctate, glabrous except a few longer and shorter setae apically.

Legs moderately wide; femora finely and moderately densely punctate, with two longitudinal rows of setae. Metafemur wide, moderately shiny, anterior margin acute, with a very fine adjacent and continuously serrated line, surface very sparsely and superficially punctate, anterior row of setae complete; posterior ventral margin moderately widened in apical half and not serrate apically, posterior margin dorsally not serrated, glabrous. Metatibia moderately wide and short, widest at middle, ratio width/length: 1/2.9, dorsal margin sharply carinate, with two groups of spines, basal one at middle, apical one at three quarters of metatibial length, beside dorsal margin basally with a few single fine setae; lateral face weakly longitudinally convex, finely sparsely punctate, along middle impunctate; ventral margin finely serrate, with three strong spines of which the distal one is more distant; medial face impunctate, apex shallowly concave interiorly near tarsal articulation. Tarsomeres impunctate dorsally, with sparse, short setae ventrally; metatarsomeres glabrous ventrally and with a strongly serrated longitudinal ridge as well as a strong, smooth carina beside it, first metatarsomere slightly shorter than following two tarsomeres combined and slightly longer than dorsal tibial spur. Protibia short, bidentate. All claws symmetrical, feebly curved and long, with normally developed basal tooth.

Aedeagus: Fig. 10 A–C. Habitus: Fig. 10D .

Distribution. See map ( Fig. 89 ) and Table 1.

Figures

FIGURE 10. A–D: Maladera lignicolor (Fairmaire, 1887) (holotype Autoserica tenebrosa Frey, 1972); E–H: M. orientalis (Motschulsky, 1858) (lectotype); I–L: M. enigma Ahrens, Fabrizi & Liu, sp. n. (holotype). A, E, I: aedeagus, left side lateral view; C, G, K: aedeagus, right side lateral view; B, F, J: parameres, dorsal view; D, H, L: habitus. Scale: 0.5 mm. Habitus not to scale.

FIGURE 89. Distribution of the subgenus Omaladera: Maladera lignicolor (Fairmaire, 1887), M. orientalis (Motschulsky, 1858).