Maladera subrugata ( Moser, 1926 ) Fabrizi & Liu & Bai & Yang & Ahrens, 2021

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 : 27-29

Maladera subrugata ( Moser, 1926) comb. n.

Figures 4 A–D, 86

Autoserica subrugata Moser, 1926: 198 .

Eumaladera subrugata: Ahrens 2006b: 238 ; 2007b: 6 .

Type material examined. See Ahrens (2007).

Additional material examined. 1 ♂ “ China bor. Qinglongqiao 25.– 27.7.1990 H. Cervenka lgt.” ( ZFMK) , 2 ex. “ China: Hubei; Dahongshan 1700m, Shuizhou VI-2003 leg. Ying et al. ” ( ZFMK) , 1 ♂ “ Xijiao Park , Beijing, 22.V.1951, light trap ” ( IZAS) , 2 ♂♂ “ Mt. Yuquanshan , 7.VII.1948 ” ( CAU) , 1 ♂ “ Ning ID-32, 17.IV.1981, Shimensi Temple” ( IZAS) , 1 ♂ “ Dongzhuang, Forestry Farm , 11.VI.1986, ZaoID-320” ( IZAS) , 2 ♂♂ “ Yan’an , Shaanxi, 27.VI.1976 ” ( MNAFU) , 1 ♂ “ Sanbao , Beijing, 21.VII.1972, leg. Wang Huimei ” ( IZAS) , 1 ♂ “ Peiping , 14.IV.1936 ” ( IZAS) , 1 ♂ “ Xijiao Park , Beijing, 18.VII.1951, light trap, leg. Zhang Yiran ” ( IZAS) , 1 ♂ “ Wanshousi village , Bejing, 5.V.1956 ” ( IZAS) , 1 ♂, 1 ♀ “ Peking Westberge Exp. Stötzner” ( CF) , 2 ♂♂, 2 ♀♀ “ Peking China ” ( CF) .

Description. Length: 8.2 mm, length of elytra: 5.3 mm, width: 4.6 mm. Body oblong-oval, reddish brown, antenna yellow, shiny, dorsal face nearly glabrous.

Labroclypeus wide and subtrapezoidal, widest at base, lateral margins weakly convex and convergent anteriorly, anterior angles strongly rounded, anterior margin indistinctly emarginate, margins moderately reflexed; lateral margin and ocular canthus produce an indistinct angle; surface weakly convex, coarsely, very densely punctate, with a few long setae anteriorly; frontoclypeal suture distinctly incised, weakly curved; smooth area anterior to eye convex, twice as wide as long; ocular canthus moderately long and wide (1/3 of ocular diameter), finely densely punctate, with two terminal setae. Frons shiny, with dense and coarse punctures, with a few single setae beside eyes. Eyes moderately large, ratio diameter/ interocular width: 0.65. Antenna with nine antennomeres; club with three antennomeres and straight, little longer than remaining antennomeres combined. Mentum elevated and slightly flattened anteriorly.

Pronotum moderately transverse, widest at base, lateral margins in basal half straight and weakly convergent anteriorly, convex at middle and in anterior half straight but slightly more convergent, anterior angles distinctly produced and sharp, posterior angles blunt; anterior margin straight, with fine marginal line, base without marginal line; surface densely and coarsely punctate, with minute setae in punctures being as long as puncture diameter, otherwise glabrous; anterior and lateral margin densely setose; hypomeron carinate, not produced ventrally. Scutellum wide, triangular, with fine, dense punctures.

Elytra widest in posterior third, striae finely impressed, finely and densely punctate, odd intervals weakly convex, even ones flat, with fine, dense punctures being partly transversely rugous, with minute setae in punctures, odd intervals with a few fine and erect single setae; epipleural margin robust, ending at apical external angle of elytra, epipleura densely setose; apical border of elytra membraneous, with a very fine rim of microtrichomes (visible at ca 100x magnification).

Ventral surface shiny, coarsely and densely punctate, metasternum including disc densely setose; metacoxa glabrous, with a few longer setae laterally. Abdominal sternites finely and densely punctate, punctures with minute setae, 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: 1/1.4. Pygidium strongly convex, shiny, coarsely and densely punctate, without smooth midline, with numerous long and fine setae beside apical margin.

Legs moderately long and wide, shiny; femora with two longitudinal rows of setae, coarsely and moderately densely punctate. Anterior margin of metafemur acute, with adjacent continuous serrated line, anterior row of setae complete; posterior ventral margin smooth, moderately widened at ventral apex, dorsal posterior margin smooth, neither serrate, glabrous. Metatibia long and moderately wide, widest at apex, ratio of width/length: 1/3.0, sharply carinate dorsally, with two groups of spines, basal group shortly behind middle, apical group at three quarters of metatibial length, in basal half with a few short and robust single setae and a continuous serrated line beside entire dorsal margin; lateral face longitudinally convex, with moderately dense fine punctures, sparsely setose; ventral margin finely serrate, with five equidistant robust setae; medial face smooth and glabrous; apex finely serrate, distinctly deeply 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 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. 4 A–C. Habitus: Fig. 4D .

Distribution. See map ( Fig. 86 ) and Table 1.

Figures

FIGURE 4. A–D: Maladera subrugata (Moser, 1926) (China: Qinglongqiao); E–H: M. fencli Ahrens, Fabrizi & Liu, sp. n. (holotype). A, E: aedeagus, left side lateral view; C, G: aedeagus, right side lateral view; B, F: parameres, dorsal view; D, H: habitus. Scale: 0.5 mm. Habitus not to scale.

FIGURE 86. Distribution of the subgenus Eumaladera: Maladera fencli sp. n., M. opaciventris (Moser, 1915), M. robustula sp. n., M. subrugata (Moser, 1926), Maladera wipfleri sp. n. (not precisely localized collection site indicated by a “?”).