Maladera shangraoensis Ahrens, Fabrizi & Liu 2021, sp. n.

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

Figures 61 E–H, 123

Type material examined. Holotype: ♂ “[China] Mt. Sanqingshan, Shangrao, Jiangxi, 15-20.IV.2007, leg. Shi Lei / LW-825” (LSSYU).

Description. Length: 10.6 mm, length of elytra: 7.7 mm, width: 6.9 mm. Body oval, light brown, frons with some greenish tomentum, labroclypeus shiny, remainder of dorsal surface dull, except a few small setae on head and elytra glabrous.

Labroclypeus subtrapezoidal, wider than long, widest at base, lateral margins weakly convex and convergent to moderately rounded anterior angles, lateral margin and ocular canthus producing a distinct blunt angle, margins strongly reflexed, anteriorly distinctly emarginate medially; surface moderately convex medially, shiny, coarsely and moderately punctate, distance between punctures larger than their diameter, with few long, erect setae anteriorly; frontoclypeal suture feebly impressed and weakly angled medially; smooth area in front of eye approximately twice as wide as long; ocular canthus short and narrow, finely punctate, without terminal seta. Frons dull, with fine, moderately dense punctures, glabrous except for a few setae beside eyes. Eyes small, ratio of diameter/interocular width: 0.62. Antenna of holotype: missing. Mentum anteriorly elevated and flattened.

Pronotum subtrapezoidal, widest at base, lateral margins subparallel in basal half, in anterior half weakly convey and convergent anteriorly, anterior angles sharp and produced, anterior margin weakly convex medially, anterior marginal line widely interrupted; surface finely and moderately densely punctate, with very minute setae in punctures only; anterior and lateral margins sparsely setose. Scutellum wide, triangular, with fine and sparse punctures each bearing a single minute seta, smooth at middle.

Elytra oblong, widest at posterior quarter (left elytra broken at base), striae weakly impressed, finely and densely punctate, intervals convex, with fine, dense punctures along striae, with a few fine, erect, short setae, punctures with very minute setae only; epipleural margin robust, ending at the strongly rounded external apical angle of elytra, epipleura densely setose, apical border membraneous, with a rim of short microtrichomes.

Ventral surface dull, meso-and metathorax as well as metacoxa with large and moderately dense punctures, sparsely setose, metacoxa glabrous except for a several long setae laterally; each abdominal sternite in addition to generally distributed fine and moderately dense punctures 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, chitinous border being one third as long as sternite. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.45. Pygidium of holotype missing.

Legs moderately wide; femora with two longitudinal rows of setae, finely and moderately densely punctate; metafemur dull, anterior margin acute, lacking an adjacent serrated line, posterior ventral margin medially straight, weakly widened in apical half and not serrate, dorsally not serrated, finely setose. Metatibia and subsequent tarsomeres of holotype missing.

Aedeagus: Fig. 61 E–G. Habitus: Fig. 61H. Female unknown.

Diagnosis. Having the right paramere straight separates Maladera shangraoensis Ahrens, Fabrizi & Liu, sp. n. from all other species in M. uncipenis group that have the right paramere densely covered with fine short setae apically.

Etymology. The new species is named after its type locality, Shangrao (adjective in the nominative singular).

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