Maladera fusca (Frey, 1972)

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 : 88-89

Maladera fusca (Frey, 1972)

Figures 18 A–E, 91

Autoserica fusca Frey, 1972a: 170 .

Maladera fusca: Nomura 1974: 113 ; Ahrens 2007b: 19.

Type material examined. Holotype ♂ “Kuatun (2300 m) 27,40 n.Br. 117,40 ö. L. J. Klapperich 8.6. 1938 (Fukien)/ Autoserica fusca G. Frey 1972 / Autoserica fusca ” (ZFMK) . Paratypes: 6 ♂♂, 7 ♀♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 23.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 1 ♂ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 11.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 1 ♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 5.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 1 ♂ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 5.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 6 ♂♂, 8 ♀♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 7.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 4 ♂♂, 5 ♀♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 8.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 2 ♂♂, 2 ♀♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 10.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 6 ♂♂, 11 ♀♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 11.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 1 ♂, 9 ♀♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 12.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 3 ♂♂, 1 ♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 15.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 2 ♀♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 17.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 1 ♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 20.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 5 ♀♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 21.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 1 ♂ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 23.6.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) , 1 ♀ “Kuatun (2300 m) 27, 40 n.Br. 117,40 ö. L. J. Klapperich 12.7.1938 (Fukien)/ Paratype Autoserica fusca G. Frey 1972 ” ( ZFMK) .

Additional material examined. China: 2 ex. “ Chine 8.IV.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 2 ex. “ Chine 12.IV.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 1 ex. “ Chine 18.IV.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 2 ex. “ Chine 21.IV.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 1 ex. “ Chine 4.V.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 1 ex. “ Chine 18.V.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 4 ex. “ Chine 12.VI.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 1 ex. “ Chine 20.VI.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 3 ex. “ Chine 16.VII.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 1 ex. “ Chine 24.VII.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 1 ex. “ Chine 12.X.46 Kuatun, Fukien leg. Tschung-Sen” ( MHNG), 1 ex. “Kuatun (2300 m) 27, 40 n. Br. 117,40 ö. L. J. Klapperich 12.6. 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 10.6. 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 6.6. 1938 (Fukien)/ ex. Coll. V. Balthasar National Museum Prague, Czech Republic ” ( NMPC), 1 ex. “ China prov. Fujian bor. occ. Shaowu env. 25 km road Shaowu-Taining 5.-10.7. M. Nikodým lgt. 1991” ( ZFMK), 1 ♂ “ China : Fukien 30.V.1938 leg. Klapperich ZFMK Bonn” ( ZFMK), 2 ♂♂ “ China: Fujian; Tongguzhang 1600m, Jianling vii-2004 / Phil 11-2004-2” ( ZFMK), 1 ♂ “Soochow China/ From Ngist Gee” ( USNM), 1 ♂ “ Mts. Baiyunshan, Songxian, Henan, 14-17.VIII.2008, leg. Ren Guodong, Wu Qiqi ” ( HBUM), 1 ♂ “ Jiuniutang , Mao’ershan , Guangxi, 13.VII.1985, 1100m, leg. Liao Subai ” ( IZAS), 1 ♂ “Huangniushi, Mt. Jiulianshan, Jiangxi, 16.VI.1975, leg. Zhang Youwei ” ( IZAS), 2 ♂♂ “Gaudun, Xingcun, Chong’an, Fujian, 10, 11. VII.1963, 950- 1210m, leg. Zhang Youwei ” ( IZAS), 1 ♂ “Nanping, Shangsi, Guangxi, 9.VI. 2000, 350m, leg. Zhang Yanzhou ” ( IZAS), 1 ♂ “ Mt. Dayaoshan , Jinxiu, Guangxi, 15.VI.1982, leg. Li Fasheng ” ( CAU), 1 ♂ “ Guangdong, 9.VII.1965 ” ( IZAS), 1 ♂ “China Tsha-jiu-san VII.10, Mell S.V. ” ( ZMHB), 1 ♂, 1 ♀ “ Hupe Tan-che-chan 900-1500 m ” ( ZMHB), 1 ♂ “ China: Hunan; Mupu Mt. 1600M, Pingjiang VIII-2003, leg. Li et al. ” ( ZFMK), 1 ex. “China Foochow 10-14.vii.1938 M.S. Yang ” ( BMNH). Vietnam: 1 ♂ “ N Vietnam, 21.27N 105.39E 70 km NW Hanoi, Tam Dao 9.-19.v.1996, 900- 1200 m Pacholátko & Dembicky leg.” ( CP), 1 ♂ “N-Vietnam Vinh Phu Prov. Tam Dao, ca. 1000m 17.-30.VI.1999 A. Kallies leg./ 524 Sericini Asia spec.” ( ZFMK), 1 ♂ “Tonkin Montes Mauson April Mai 2-3000’ H. Fruhstorfer” ( MNHN).

Redescription. Length: 9.6 mm, length of elytra: 6.8 mm, width: 5.6 mm. Body oblong-oval, dark reddish brown, antenna yellowish, surface dull, labroclypeus shiny, except a few short setae at margins of pronotum and elytra, glabrous.

Labroclypeus wide and subtrapezoidal, widest at base, lateral margins nearly straight and convergent anteriorly, anterior angles strongly rounded, anterior margin weakly emarginate medially; margins moderately reflexed; lateral margin and ocular canthus produce an indistinct angle; surface flat, with an indistinct longitudinal elevation behind anterior margin, finely, densely punctate, glabrous; frontoclypeal suture distinctly incised, angled medially; smooth area anterior to eye convex, twice as wide as long; ocular canthus short and narrow (1/3 of ocular diameter), finely densely punctate, without terminal seta. Frons dull, with moderately dense, fine punctures, with a few single setae beside eyes. Eyes small, ratio diameter/ interocular width: 0.6. Antenna with ten antennomeres; club with three antennomeres and straight, slightly shorter than remaining antennomeres combined. Mentum elevated and slightly flattened anteriorly.

Pronotum transverse, widest at base, lateral margins moderately evenly convex, moderately convergent anteriorly and posteriorly, anterior angles distinctly produced and sharp, posterior angles blunt, moderately rounded at tip; anterior margin weakly convex, with fine complete marginal line, base without marginal line; surface moderately finely and densely punctate, with minute setae in punctures; anterior and lateral margin finely setose; hypomeron carinate, not produced ventrally. Scutellum wide, triangular, with fine, moderately dense punctures.

Elytra widest at posterior third, striae finely impressed, finely and densely punctate, intervals slightly convex, with fine, moderately dense punctures being except on second interval partly concentrated along striae, with minute setae in punctures and penultimate interval with a few short setae, otherwise glabrous; epipleural margin robust, ending at nearly blunt external apical angle of elytra, epipleura sparsely setose; apical border of elytra membraneous, with a fine rim of microtrichomes (visible at ca 100x magnification).

Ventral surface dull, finely and densely punctate, with dense and fine, adpressed setae, metasternal disc sparsely covered with longer setae; metacoxa with a few longer setae laterally. Abdominal sternites finely and densely punctate, glabrous, each sternite with a transverse row of punctures each bearing a fine seta. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.7. Pygidium weakly convex, dull, finely and sparsely punctate, without smooth midline, with a few long setae along apical margin.

Legs short and wide; femora dull, with two longitudinal rows of setae, finely and sparsely punctate. Anterior margin of metafemur acute, without adjacent serrated line, anterior row of setae completely reduced; posterior ventral margin smooth, moderately widened at ventral apex, dorsal posterior margin smooth, neither serrate, glabrous. Metatibia short and wide, widest at middle, ratio of width/length: 1/2.5, sharply carinate dorsally, with two groups of spines, basal group at middle, apical group at three quarters of metatibial length, in basal half with a few short single spines close to dorsal margin; lateral face longitudinally convex, nearly entirely impunctate, only a few fine punctures beside dorsal and ventral margin, glabrous; ventral margin finely serrate, with four equidistant robust setae; medial face smooth and glabrous; apex finely serrate, shallowly emarginate interiorly near tarsal articulation. Tarsomeres dorsally impunctate, glabrous, neither laterally nor dorsally carinate, moderately setose ventrally; metatarsomeres with a strongly serrated ridge ventrally and a smooth subventral longitudinal carina; first metatarsomere as long as following two tarsomeres combined and as long as dorsal tibial spur. Protibia moderately long, bidentate; anterior claws symmetrical, basal tooth of both claws bluntly truncate at apex.

Aedeagus: Fig. 18 A–D. Habitus: Fig. 18E .

Remarks. Among the paratypes, there were three unidentified Maladera species (females), and one Maladera jaintiaensis Ahrens & Fabrizi, 2016 (see under this species).

Distribution. See map ( Fig. 91 ) and Table 1.

Figures

FIGURE 18. A–E: Maladera masumotoi Nomura, 1974 (China: Kiang-Si); F–J: Maladera fusca (Frey, 1972) F–H: China: Fujian: Kuatun; I, J: holotype; K–N: M. cardoni (Brenske, 1896) (India: Almora). A, F, K: aedeagus, left side lateral view; D, H, M: aedeagus, right side lateral view; B, G, I, L: parameres, dorsal view; C: parameres, distal view; E, J, N: habitus. Scale: 0.5 mm. Habitus not to scale.

FIGURE 91. Distribution of the subgenus Omaladera: Maladera enigma sp. n., M. formosae (Brenske, 1898), M fusca (Frey, 1972), M. guangdongana sp. n., M. hongkongica (Brenske, 1898).