Legs slender; femora with two longitudinal rows of setae, finely and sparsely punctate between the rows; metafemur dull, anterior margin acute, behind anterior edge without serrated line, anterior longitudinal row complete, posterior margin in apical half ventrally smooth and slightly widened, posterior margin dorsally distinctly serrated, on its basal portion with a few short setae. Pygidium weakly convex and moderately shiny, coarsely and densely punctate, on basal portion also with finer punctures interspersed, without a smooth midline, with dense, long setae. Dorsal surface with numerous long semi-erect setae. Antenna with ten antennomeres, club with six antennomeres, straight, as long as remaining antennomeres combined; antennomere 5 distinctly shorter than the club, antennomere 4 slightly widened but not transverse, antennomere 3 half as long as pedicellus. A—D Neoserica bairailingshanica sp. Antennomere 5 subequal to half of length of club. 
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Olios annulatus Petrunkevitch, Right paramere subdivided into a basal dorsal and distal ventral lobe. Frons dull, with fine and dense punctures, beside the eyes a with a few erect setae, otherwise with minute setae only.
They were therefore omitted from species description so far. Pronotum moderately transverse, subtrapezoidal, widest at base, 210 margins evenly convex, in the basal half only weakly convergent, strongly convergent in anterior half, anterior angles sharp and distinctly produced, posterior angles blunt, slightly rounded at the tip; anterior margin nearly straight, with a distinct and complete marginal line; surface densely and finely punctate with minute setae in punctures; setae of anterior and abjormis border sparse; hypomeron basally distinctly carinate, but carina only weakly produced.
Vietnam, ChinaN.
Abnormis 2010
Antenna with ten antennomeres, club with six antennomeres, strongly reflexed, twice as long as remaining antennomeres combined; antennomere 5 subequal to length of club, antennomere 4 strongly transverse, antennomere 3 half as long as pedicellus. The species is named after one of its collectors, Yao Jian.
Hypomeron basally strongly 210 ventrally and transversely sulcate. Figs 3A—D8. Olios bibranchiatus Rheims, d: Neoserica ponderosa Arrow,comb. Pronotum moderately transverse, subtrapezoidal, widest at base, lateral margins weakly convex, convexly bent at middle, ahnormis basal half subparallel, in apical half strongly convergent anteriorly, anterior angles sharp and distinctly produced, posterior angles blunt, slightly rounded at the tip; anterior margin nearly straight, with a distinct and complete marginal line; surface densely and finely punctate with minute setae in punctures; setae of anterior and lateral border sparse; hypomeron basally distinctly carinate, but carina only weakly produced.
Curicaberis manifestus Rheims, Abbreviations used in the text for collection depositories are as follows: The aedeagus of a syntype of Neoserica ponderosa was illustrated by Ahrens and Sabatinelli [p. The new species is named abnomris to its occurrence in northern Vietnam, formerly during colonial times, called Tonkin.

A key to the species and to species groups is given, the genitalia of all species including their habitus are illustrated. Frons dull, with fine and sparse punctures, beside eyes with a few erect setae. A—E Neoserica tonkinea sp. Antenna with ten antennomeres, club with six antennomeres, moderately reflexed, twice as long as remaining antennomeres combined; antennomere 5 subequal to length of club, antennomere 4 strongly transverse, antennomere 3 half as long as pedicellus.
Neoserica allolaotica is similar to Neoserica taunggyiana externally and in the general shape of male genitalia. Tarsomeres ventrally with sparse, short setae, laterally not carinate, protarsomeres smooth, meso- and metatarsomeres with a few fine punctures; metatarsomeres with a strongly serrated ridge ventrally abnomis a sharp subventral carina immediately beside it, first metatarsomere as long as following two tarsomeres combined and slightly longer than dorsal tibial spur.

Neoserica abnormis Moser, Scutellum long, triangular with nearly straight sides, apex slightly rounded, with fine, dense punctures, with only minute setae.
Scutellum moderately wide abnormks long, triangular with nearly straight sides, apex slightly rounded, with fine, dense punctures, smooth along the middle, with only minute setae.
Abnormis -
Abnormid Neoserica trifida it differs by the smooth ventral posterior margin of metafemur, by the slightly shorter antennal club of male, and of course by shape of parameres being simple and not subdivided into separate lobes. China 2 Zoologisches Forschungsmuseum A. Protibia always distinctly bidentate. Pygidium weakly convex and moderately shiny, coarsely and densely punctate, on basal portion also with finer punctures interspersed, without a smooth midline, with dense, long setae.
Curicaberis cuyutlan Rheims, Phallobase with long lateral process on right apex.

Body oblong, dark brown, antennal club brown, anterior labroclypeus shiny, dorsal surface dull, sparsely setose. Figs 5E—H9. Frons dull, in posterior half weakly shiny, with fine and sparse punctures, beside the eyes and behind the frontoclypeal suture with a few abnprmis setae. Pygidium weakly convex and dull, coarsely and densely punctate, without smooth midline, with a few semi-erect setae beside the apical margin.

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