Maladera renardi ( Ballion, 1870 )

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 : 15-16

Maladera renardi ( Ballion, 1870)

Figures 1 E–H, 83

Serica renardi Ballion, 1870: 339 ; Brenske 1897: 371; Murayama 1938: 11, 1954: 54.

Serica sibirica Brenske, 1897: 372 (syn by Nomura 1973: 128; Nikolajev 1982: 285); Maladera sibirica: Dalla Torre 1912: 18 .

Maladera renardi: Reitter 1896: 187 ; Nomura 1967: 52, 1973: 128; Kalinina 1989: 419; Kim & Lee 1997: 123; Kim & Kim 2003: 84; Ahrens 2007b: 21.

Serica delicta Brenske, 1897: 372 , syn. n.

Type material examined. Lectotype ( delicta , here designated): ♂ “Wladivostok Koltze/ Serica delicta Type Brks./ type/ delicta Brsk. ” ( ZMHB) . Lectotype ( sibirica , here designated): ♂ “Wladivostok Koltze/ sibirica Typ. Brsk. / Kein Forceps, unausgefärbt/ Coll. Brenske ” ( ZMHB) (aedeagus in lectotype missing) . Paralectotypes ( sibirica , here designated): 1 ♀ “Siberia or. Chabarofka Koltze F./ ♀ / sibirica typ. Brsk. / Coll. Brenske ” ( ZMHB), 1 ♀ “Wladivostok/ sibirica Typ. Brsk. / coll. Brenske ” ( ZMHB) .

Additional material examined. Russia: 1 ♂ “ Sibiria Stgr. / renardi v. sibirica m./ Coll. Brenske ” ( ZMHUB) , 1 ♂ “ Russia: primorskyi Kray, Ryazanovka 14km SW Slavyanka 42.48N 131.12E 16.VI.1993, 50m, leg. L. Zerche et al. ” ( DEIC) , 1 ♂ “SU-SE ( Primor’e ) ca. 50km SWW Vladivostok Bamburovo vill. env. 17.07.1990 Lg. A. Napolov ” ( CNA) , 1 ♂ “SU-SE ( Primor’e ) ca. 50km SWW Vladivostok Bamburovo vill. 28.7.1990 Lg. A. Napolov ” ( CNA) , 1 ♂ “SU-Far East ( Primor’e ) ca. 50km SWW Vladivostok Bamburovo vill. 6.8.1990 Lg. A. Napolov ” ( CNA) , 1 ♂, 2 ♀♀ “SU-Far East ( Primor’e ) ca. 50km SWW Vladivostok Bamburovo vill. env. 17.8.– 6.9.1991 Lg. A. Napolov ” ( CNA) , 1 ♂, 1 ♀ “SU-Far East ( Primor’e ) ca. 50km SWW Vladivostok Bamburovo vill. env. 6.– 10.9.1991 Lg. A. Napolov ” ( CNA) , 3 ♂ “ Vladivostok Sibir. Or. Ussuursk Dr. Jureček 1919” ( ZFMK) , 3 ♂♂, 11 ♀♀ “ Russia or. Primorskij reg. Black mts. Ananjevka A. Plutenko leg. 21.–30.5.94” ( ZFMK) , 1 ♂ “ Russia Prim. Partizansk distr. Alexeseyevsky distr. 20 km E Sergeyevka / Forests near Andreyevska river 400 m, 26.–29.VII.1995 P̹tz & Wrase” ( ZFMK) , 1 ♂ “ Sutschan Ussuri ” ( ZFMK) , 1 ♂, 2 ♀♀ “ Russia: Far East Khabarovsk reg. Amur distr. Obluchje vill., 18.vi.2001 ” ( ZFMK) , 2 ♂♂, 3 ♀♀ “ Far East of Russia S. Primorje reg. Kondratenovka v. 12.VII.1998 ” ( ZFMK) , 1 ♂, 1 ♀ “ Rossia or. VI.1992 Cemyia gory Mts. Griaznaja riv. J. Farkac leg.” ( ZFMK) . China: 12 ♂♂, 18 ♀♀ “ China: Liaoning prov. Mt. Wulongshan, Dadaong city, June 11–15, 2001 local collector/ Via J. Jingke ” ( ZFMK) , 2 ♂♂ “ China: Inner Mongolia Mt. Daguangdingzishan (2061m) Chifeng 2.12. vii.2009 local coll. Ankauf via Li Jingke 2010” ( ZFMK) , 2 ♂♂ “ Qingyuan , Liaoning, 1, 7.IV.1954 ” ( IZAS) . Japan: 1 ♀ “ Tashiro Chikugo 1.ix.1952 Y. Miyake ” ( ZFMK) .

Redescription. Length: 8.1 mm, length of elytra: 6.5 mm, width: 4.9 mm. Body oblong, blackish brown, antenna yellowish, surface dull, labroclypeus and anterior frons shiny, except a few short setae on head and sides of elytra, glabrous.

Labroclypeus wide and subtrapezoidal, widest at base, lateral margins convex and convergent anteriorly, anterior angles moderately rounded; anterior margin weakly emarginate medially; margins moderately reflexed; lateral margin and ocular canthus produce an indistinct angle; surface flat, coarsely, densely punctate, with a few single erect setae; frontoclypeal suture finely incised, angled medially; smooth area anterior to eye convex, as wide as long; ocular canthus short and narrow (1/3 of ocular diameter), finely densely punctate, terminal seta present. Frons posteriorly dull, with moderately dense, irregular, fine punctures, with a few single setae beside eyes. Eyes moderately large, ratio diameter/ interocular width: 0.5. Antenna with ten antennomeres; club with three antennomeres and straight, 1.5 times as long as remaining antennomeres combined. Mentum elevated and slightly flattened anteriorly.

Pronotum narrow, widest at base, lateral margins in basal half straight and weakly convergent, in anterior half moderately evenly convex, moderately convergent anteriorly, anterior angles distinctly produced and sharp, posterior angles moderately rounded; anterior margin weakly convex, with fine marginal line being medially narrowly interrupted, base without marginal line; surface 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 and dense punctures.

Elytra widest at posterior third, striae finely impressed, finely and densely punctate, intervals flat, with fine, moderately dense punctures, odd intervals with a few single short, erect setae, otherwise with minute setae in punctures; epipleural margin robust, ending at convex 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: 1/1.18. Pygidium moderately convex, dull, finely and densely punctate, without smooth midline, with short setae throughout and a few long setae along apical margin.

Legs moderately long and wide; femora shiny, with two longitudinal rows of setae, finely and sparsely punctate. Anterior margin of metafemur acute, with adjacent serrated line; posterior ventral margin smooth, not widened at apex, dorsal posterior margin smooth, neither serrate, glabrous. Metatibia long and moderately wide, widest at middle, ratio of width/length: 1/3.9, sharply carinate dorsally, with two groups of spines, basal group shortly before middle, apical group at three quarters of metatibial length, in basal half with a serrated line beside dorsal margin and few short single spines close to dorsal margin; lateral face longitudinally convex, finely sparsely punctate, glabrous; ventral margin finely serrate, with three robust setae of which the distal one is more distant; 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 glabrous and with a strongly serrated ridge ventrally and a smooth subventral longitudinal carina; first metatarsomere slightly longer than following tarsomere and slightly shorter than dorsal tibial spur. Protibia moderately long, bidentate; anterior claws symmetrical, basal tooth of both claws bluntly truncate at apex.

Aedeagus: Fig. 1 E–G. Habitus: Fig. 1H .

Remarks. Since the male type specimen of Serica sibirica has no aedeagus, the status/ synonymy of the latter species is a little uncertain. Kim & Kim (2003) considered M. motschulskyi and M. spissigrada as synonyms of M. renardi , which is not correct, both are valid species.

Distribution. See map ( Fig. 83 ) and Table 1.

Figures

FIGURE 1. A–D: Maladera holosericea (Scopoli, 1772) (Germany: Brandenburg: Mecherin); E–H: M. renardi (Ballion, 1870) (lectotype: S. delicta Brenske, 1897); I–L: Maladera spissigrada (Brenske, 1897) (Russia: Ussurisk). 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 83. Distribution of the subgenus Maladera: Maladera holosericea (Scopoli, 1772), M. motschulskyi (Brenske, 1897), M. renardi (Ballion, 1870), M. spissigrada (Brenske, 1897), M. chenzhouana sp. n..