Maladera jaroslavi Ahrens, Fabrizi & Liu, 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 : 270-271

Maladera jaroslavi Ahrens, Fabrizi & Liu , sp. n.

Figures 63 E–H, 122

Type material examined. Holotype: ♂ “ China, Fujian c., 700-1100m Ziyungdongshan , NW slopes 25°46’N 117°20’E, 31. V. Jaroslav Turna leg., 2008/ 1049 Sericini Asia spec.” ( ZFMK).

Description. Length: 10.5 mm, length of elytra: 7.4 mm, width: 6.5 mm. Body wide, oval, dark brown, legs brown, antenna yellow, dorsal surface dull, labroclypeus, tarsomeres, and tibiae shiny, glabrous.

Labroclypeus moderately wide, trapezoidal, lateral margins slightly convex and convergent, producing with the ocular canthus a nearly straight line, anterior angles moderately rounded, anterior margin distinctly emarginate medially, margins weakly reflexed; surface flat, basal half with dull toment, finely and densely punctate, with a few short erect setae anteriorly; labrum anteriorly produced and deeply emarginate; smooth area anterior to eyes three times as wide as long; frontoclypeal suture finely incised, bluntly angled medially; ocular canthus moderately wide and long (equals 1/3 of ocular width), finely and sparsely punctate, with a short terminal seta. Frons with finely sparsely punctures, with a few single setae beside eyes. Antenna with ten antennomeres, club with three antennomeres, as long as remaining antennomeres combined. Eyes small, ratio diameter/ interocular width: 0.52. Mentum convexly elevated and flattened anteriorly.

Pronotum widest at base, lateral margins in basal half nearly straight and subparallel, in anterior half weakly convex and convergent anteriorly, anterior angles sharp and distinctly produced, posterior angles blunt; anterior margin weakly convex, with a fine complete marginal line; basal margin without marginal line; surface finely and moderately densely punctate, setae of lateral and anterior margin fine but sparse, punctures with microscopic setae only. Scutellum wide, triangular, punctation as on pronotum.

Elytra widest behind middle, striae distinctly impressed, finely punctate, intervals moderately convex, finely and densely punctate, punctures concentrated along striae, odd intervals with a few single, short adpressed setae; epipleural margin robust, ending at strongly rounded external apical angle of elytra, sparsely setose; apex of elytra with a fine membraneous rim of short microtrichomes.

Ventral face coarsely and densely punctate, nearly glabrous, only metasternal plate and lateral metacoxa with a few robust setae. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/ metacoxa: 1/ 1.53. Abdominal sternites finely and moderately densely punctate, each with a row of coarse punctures bearing each a robust seta. Pygidium moderately convex, finely and densely punctate, on apical half with numerous short and longer setae.

Legs moderately wide; femora finely and sparsely punctate, with two longitudinal rows of setae. Metafemur shiny, anterior margin acute, without adjacent serrated line, anterior longitudinal row of setae reduced; posterior ventral margin almost straight, weakly widened in apical half and serrated, posterior dorsal margin completely serrated, glabrous. Metatibia long and moderately wide, ratio width/ length: 1/ 3.2, sharply carinate dorsally, with two groups of spines, basal one nearly at middle, apical one at four fifths of metatibial length, basally with a few fine and short setae; lateral face longitudinally convex, finely and densely punctate; apex concavely emarginate interiorly near tarsal articulation. Tarsomeres impunctate dorsally, with dense, fine setae ventrally; metatarsomeres ventrally glabrous, with a strongly serrated carina, subventrally with a second, smooth longitudinal carina; first metatarsomere little shorter than following two tarsomeres combined, and a quarter of its length longer than dorsal tibial spur. Protibia moderately long, bidentate, with blunt external extension at middle; terminal tarsomeres missing in holotype.

Aedeagus: Fig. 63 E–G. Habitus: 63H. Female unknown.

Diagnosis. Maladera jaroslavi Ahrens, Fabrizi & Liu , sp. n. differs from the other species of Maladera uncipenis group by the presence of a unilateral, robust apical apophysis on the right side of the phallobase.

Etymology. The new species is named after its collector, Jaroslav Turna (noun in the genitive singular case).

Distribution. See map ( Fig. 122 ) and Table 1.

Figures

FIGURE 63. A–D: Maladera fengyangshanica Ahrens, Fabrizi & Liu, sp. n. (holotype); E–H: M. jaroslavi Ahrens, Fabrizi & Liu, sp. n. (holotype); I–L: M. nanpingensis 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 122. Distribution of the Maladera uncipenis group: Maladera constellata sp. n., M. fengyangshanica sp. n., M. guanxiensis sp. n., M. hunanensis sp. n., M. jaroslavi sp. n., M. nanpingensis sp. n., M. paraserripes sp. n..