Tetraserica misofi Ahrens, Pacholátko & Pham, 2025

Tetraserica misofi Ahrens, Pacholátko & Pham View in CoL , sp. nov.

Fig. 2G–L View FIGURE 2

Type material examined. Holotype ♂ “LAO, Phongsaly prov., 21°41’-2’N 102°6′-8’E, 28.v.–20.vi.2003, ~ 1500m PHONGSALY env., P. PACHOLATKO Igt. / 1382 Sericini Asia spec.” ( ZFMK).

Description of holotype. Length: 8.0 mm; length of elytra: 6.2 mm; maximum width: 4.9 mm. Body more elongate, dorsal surface dark brown and glabrous, frons and pronotum with weak greenish shine, labroclypeus, ventral surface and legs reddish brown, antenna yellow.

Labroclypeus subtrapezoidal, wider than long, widest at base, lateral margins moderately convex and convergent to strongly rounded anterior angles, anterior margin weakly emarginate medially, margins moderately reflexed; surface weakly convex, moderately shiny, finely and densely punctate, glabrous; frontoclypeal suture indistinctly incised, flat and weakly curved medially; ocular canthus short and triangular, impunctate, with a single terminal seta. Smooth area anterior to eye twice as wide as long. Frons dull, with sparse, fine punctures, with two single erect setae beside each eye. Antenna yellowish, with ten antennomeres; club composed of four antennomeres in male, straight, 1.1 times as long as remaining antennomeres combined. Eyes large, ratio of diameter/interocular width: 0.95. Mentum elevated and slightly flattened anteriorly.

Pronotum moderately wide and convex, widest shortly before base, lateral margins evenly convex, strongly narrowed anteriorly towards sharp and slightly produced anterior angles, posterior angles convex. Anterior margin of pronotum slightly convex, with fine, complete marginal line. Surface finely and densely punctate, except minute setae glabrous, lateral and lateral anterior margins sparsely setose. Hypomeron not carinate. Scutellum triangular, finely and densely punctate.

Elytra oblong, widest in posterior third, striae distinctly impressed, finely and moderately densely punctate, intervals flat, with fine and almost evenly dense punctures, with very minute setae in punctures; epipleural edge robust, ending at convex external apical angle of elytra, epipleura densely setose; apical border with a narrow fringe of microtrichomes (100x).

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; abdominal sternites finely and densely punctuate, with a transverse row of coarse punctures, each bearing a robust seta. Mesosternum between mesocoxae as wide as mesofemur. Ratio of length of metepisternum/metacoxa: 1/1.38. Pygidium strongly convex in apical half and dull, densely punctate, without smooth midline, almost glabrous, without longer setae along apical margin.

Legs wide; femora finely and sparsely punctate; metafemur wide and moderately shiny, anterior margin acute, posterior margin smooth ventrally and only weakly widened in apical half, posterior margin smooth dorsally, straight and glabrous. Metatibia moderately long and narrow, widest at middle; ratio width/length: 1/3.6; basal group of dorsal spines of metatibia shortly before middle, apical one at three quarters of metatibial length; distal margin not truncated, terminal spines of normal length. Tarsomeres dorsally smooth, with fine, dense setae ventrally on distal half, neither laterally nor dorsally carinate; metatarsomeres with a strongly serrated ridge ventrally and glabrous; first metatarsomere as long as following two tarsomeres combined, a third of its length longer than dorsal tibial spine. Protibia short, bidentate; anterior claws symmetrical, basal tooth of both claws bluntly truncate at apex.

Aedeagus: Fig. 2I–L View FIGURE 2 . Habitus: Fig. 2G, H View FIGURE 2 . Female unknown.

Diagnosis. Tetraserica misofi Ahrens, Pacholátko & Pham , sp. nov. is in shape of aedeagus most similar to T. jakli Fabrizi, Dalstein & Ahrens, 2019 and T. strbai Ahrens, Pacholátko & Pham , sp. nov. It differs from both by the larger eyes of male and convex pygidium as well as by the shape of aedeagus: the left paramere being composed by a short dorsal and a long ventral branch, the straight, much longer and simply pointed mesoapical phallobasal apophysis, as well as by the much longer basal lobe of the robust right paramere which is strongly developed mesally and which almost exceeds the left side of the aedeagus.

Etymology. The name species is names after Bernhard Misof, director of the LIB/ Museum Koenig, who helped immensely to provide funds for the purchase of the Sericinae collection of Petr Pacholátko by the Museum Koenig, Bonn.