Maladera putaodiensis 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 : 258-259

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

Figures 60 E–H, 123

Type material examined. Holotype: ♂ “[ China] Zhejiang Mt. Fengyangshan, Putaodi 2007-7-3 / LW-1311” ( ISAZ).

Description. Length: 9.9 mm, length of elytra: 7.5 mm, width: 5.0 mm. Body oval, reddish brown, frons darker, antenna yellow, labroclypeus shiny, remainder of dorsal surface dull, glabrous.

Labroclypeus subtrapezoidal, little wider than long, widest at base, lateral margins straight and moderately convergent to moderately rounded anterior angles, lateral margin and ocular canthus producing a blunt angle, margins weakly reflexed; anterior margin weakly emarginate medially; surface flat, coarsely densely punctate, with numerous long, erect setae; frontoclypeal suture weakly impressed and angled medially; smooth area in front of eye approximately 1.5 times as wide as long; ocular canthus short and narrow, finely punctate, with a terminal seta. Frons with fine, dense punctures, glabrous except for a few setae beside eyes. Eyes moderately large, ratio of diameter/interocular width: 0.71. Antenna composed of 10 antennomeres, club with 3 antennomeres, straight, 1.5 times as long as remaining antennomeres combined. Mentum anteriorly elevated and flattened.

Pronotum subtrapezoidal, widest at base, lateral margins weakly convex and convergent anteriorly, anterior angles moderately produced but sharp; anterior margin weakly convex, marginal line widely interrupted medially; surface finely and moderately densely punctate, with minute setae in punctures; anterior and lateral margins sparsely setose; hypomeron carinate but not produced. Scutellum wide, triangular, with fine and dense punctures each bearing a minute seta, impunctate along midline.

Elytra oblong, widest at posterior third, striae distinctly impressed, finely and densely punctate, intervals weakly elevated, with fine, moderately dense punctures concentrated along striae, punctures with minute setae, odd intervals with short erect setae; epipleural margin robust, ending at strongly rounded external apical angle, 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 a several long setae laterally. Abdominal sternites, in addition to generally distributed fine and moderately dense punctures, each with a distinct transverse row of coarse punctures each bearing a short and robust seta, punctures with microscopic setae, penultimate sternite apically with a shiny smooth wide chitinous border being half as long as length of sternite. Mesosternum between mesocoxae slightly narrower than mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.37. Pygidium weakly convex, dull, with coarse, moderately dense punctures as well as short and long setae on apical half.

Legs moderately wide and long; femora with two longitudinal rows of setae, finely and moderately densely punctate; metafemur shiny, anterior margin acute, lacking an adjacent serrated line, posterior ventral margin straight, not widened in apical half, in apical third serrate, dorsal posterior margin completely serrate and finely setose. Metatibia moderately wide and long, widest at apex, ratio width/length: 1/3.5, dorsal margin sharply carinate, with two groups of spines, basal shortly before middle, apical one at four fifths of metatibial length, in basal half with a few punctures and short spines; lateral face longitudinally convex, with moderately dense and fine longitudinally impressed punctures; ventral margin serrate, with two widely distant spines; medial face finely sparsely punctate, apex interiorly near tarsal articulation shallowly concave. Tarsomeres rugosely punctate dorsally, ventrally with sparse, short setae; metatarsomeres ventrally glabrous, with a strongly serrated ridge and a smooth subventral longitudinal carina, sides sharply carinate; first metatarsomere as long as following two tarsomere combined and distinctly longer than dorsal tibial spur. Protibia short, bidentate. All claws symmetrical, feebly curved and long, with normally developed basal tooth.

Aedeagus: Fig. 60 E–G. Habitus: Fig. 60H . Female unknown.

Diagnosis. Maladera putaodiensis Ahrens, Fabrizi & Liu , sp. n. differs from M. tiammushanica Ahrens, Fabrizi & Liu , sp. n. in having symmetrical parameres, as well as the phallobase distinctly produced ventrolaterally.

Etymology. The name of the new species is derived from the type locality, Putaodi (adjective in the nominative singular).

Distribution. See map ( Fig. 123 ) and Table 1.

Figures

FIGURE 60. A–D: Maladera tiammushanicaAhrens, Fabrizi & Liu, sp. n. (holotype); E–H: M. putaodiensis Ahrens, Fabrizi & Liu, sp. n. (holotype); I–L: M. excisilabrata 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 123. Distribution of the Maladera uncipenis group: Maladera pieli sp. n., M. putaodiensis sp. n., M. qianqingtangensis sp. n., M. serripes (Moser, 1915), M. shangraoensis sp. n..