Oxyserica goertzae, Sreedevi & Ranasinghe & Fabrizi & Ahrens, 2019

Sreedevi, Kolla, Ranasinghe, Sasankha, Fabrizi, Silvia & Ahrens, Dirk, 2019, New species and records of Sericini from the Indian subcontinent (Coleoptera, Scarabaeidae) II, European Journal of Taxonomy 567, pp. 1-26 : 17-20

Oxyserica goertzae sp. nov.

urn:lsid:zoobank.org:act:2CB55176-65EB-4FA8-9FE3-2E1281E30FF4

Fig. 3 E–H

Diagnosis

The new species differs from the similar Oxyserica darjeelingia (Brenske, 1898) by the narrower ventral and dorsal lobes of the parameres, with the first being slightly concave before the apex (dorsal view) and the latter being only half as long as the ventral lobes, rather than being subequal in length as in

O. darjeelingia . The new species differs from O. brancuccii Ahrens, 2001 by the less sinuate ventral lobes of the parameres.

Etymology

The name of this new species (noun in the genitive case) is dedicated to Dagmar Görtz (Köln).

Type material

Holotype

NEPAL • ♂; “ Nepal: Manaslu mts., Bhudi Gandaki Vall. Machakhola to Jagat , 950-1150m, 24.V.2006, J. Schmidt leg.”; ZFMK.

Description

MEASUREMENTS. Length: 5.1 mm, length of elytra: 3.0 mm, width: 3.1 mm.

HABITUS AND COLORATION. Body oval ( Fig. 3H ), blackish, legs brown, elytra yellowish brown with margins and a transversal mesolateral spot black, dorsal surface dull and nearly glabrous.

HEAD. Labroclypeus wider than long, shiny, widest at base, lateral margins strongly convex and convergent to rounded anterior angles; anterior margin weakly sinuate medially, margins weakly reflexed; lateral margins and ocular canthus produce a blunt angle; surface weakly convex medially, coarsely and densely punctate, with numerous long, erect setae; frontoclypeal finely incised and curved medially. Frons dull with some iridescent shine, with evenly dense, moderately coarse punctures, beside eyes and behind frontoclypeal suture with a few single, short setae, otherwise with minute setae in punctures. Smooth area in front of eyes convex, as wide as long. Ocular canthus finely densely punctate, wide and moderately long, without a terminal seta. Eyes very small, ratio of diameter/interocular width: 0.39. Antenna with ten antennomeres; club composed of six antennomeres, straight, 1.3 times as long as than remaining antennomeres combined. Mentum elevated and slightly flattened anteriorly.

PRONOTUM. Moderately wide, widest at base, lateral margins nearly in basal half slightly concave and convergent to middle, weakly convex and moderately convergent towards produced anterior angles. Anterior margin of pronotum moderately convex, with fine and complete marginal line; basal marginal line absent; posterior angles blunt; surface finely and densely punctate, glabrous, with minute setae in punctures, setae of lateral and anterior margins dense, the latter 1/6 of pronotal length. Hypomeron carinate, weakly produced ventrally. Scutellum triangular, finely and densely punctate, on base along middle narrowly impunctate.

ELYTRA. Short, widest at middle, striae slightly impressed, finely and densely punctate; second and third interval completely yellow, sutural interval and lateral 3–4 intervals black; intervals weakly convex, with fine and sparse punctures, with very minute setae in punctures, penultimate lateral interval with a few short setae; epipleural edge fine, ending at rounded external apical angle of elytra, epipleura sparsely setose, apical border membranous, with a broad fringe of short microtrichomes (magnification 100×).

ABDOMEN. Ventral surface dull, finely and densely punctate, metasternum sparsely covered with fine, short, or very minute setae; metacoxa glabrous, with a few single setae laterally. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.8. Abdominal sternites finely punctate, with a transverse row of coarse punctures, each bearing a robust seta. Pygidium strongly convex and dull, with dense, coarse punctures but without smooth midline, in punctures with numerous minute setae and a few longer ones along apical margin.

LEGS. Moderately wide; femora finely and sparsely punctate, with two longitudinal rows of longer setae. Metafemur moderately shiny, anterior margin acute, without submarginal serrated line; anterior row of seta-bearing punctures present; posterior margin smooth ventrally, widened in apical half, posterior margin smooth dorsally, with a few short setae basally. Metatibia moderately long and wide, widest at middle, ratio of width/length: 1/2.5; dorsal margin sharply carinate, with two groups of spines, basal group shortly before middle, apical one at three quarters of metatibial length, in basal third without further robust setae; lateral face longitudinally convex, finely and sparsely punctate, along midline smooth, with minute setae in punctures; ventral edge finely serrate, with four robust equidistant setae; medial face smooth, apex interiorly near tarsal articulation shallowly truncate. Tarsomeres with fine, sparse setae ventrally, neither laterally nor dorsally carinate, dorsally smooth; metatarsomeres glabrous, with a strongly serrated ridge ventrally and a parallel subventral smooth carina immediately beside it; first metatarsomere as long as following two tarsomeres combined, as long as dorsal tibial spur. Protibia short, bidentate; anterior claws symmetrical, basal tooth of both claws bluntly truncate at apex.

MALE GENITALIA. Aedeagus: Fig. 3 E–G.

Female

Unknown.

Figures

Fig. 3. A–D. Neoserica (s. lat.) reuteri sp. nov., holotype, ♂. E–H. Oxyserica goertzae sp. nov., holotype, ♂. I–M. Selaserica hosanagarana sp. nov., holotype, ♂. A, E, I. Aedeagus, left side lateral view. C, G, L. Aedeagus, right side lateral view. B, F, J–K. Parameres, dorsal view. D, H, M. Habitus. Scale bars: 0.5 mm. Habitus not to scale.