Liothorax rusakovi ( Gusakov, 2004 ) Gusakov, 2004

Dellacasa, Marco, Gordon, Robert D. & Dellacasa, Giovanni, 2007, Systematic review to the genus Liothorax (Coleoptera: Scarabaeoidea: Scarabaeidae: Aphodiinae), Zootaxa 1407, pp. 23-42 : 36-37

Liothorax rusakovi ( Gusakov, 2004) , new combination

( Figs. 49–53 )

Aphodius (Liothorax) rusakovi: Gusakov 2004: 6

Type locality: Orenbugsk[aya]. obl[ast’]., 120 km YuYuZ Orenburga, razliv r. ilek, Sudkhorechka ( Russia). Type depository: Zoologiceskii Muzei moskovskogo Universiteta, Moscow.

Redescription: Length 4.5–5.5 mm; body subcylindrical, faintly widened basally, shiny, glabrous. Color black; clypeal margin and legs pitch-brown; antennal club piceous. Head anteriorly at middle gibbose, with evenly spaced punctures on disc, punctation somewhat coarser and denser distally. Clypeus weakly sinuate medially, rounded laterally; genae obtusely rounded, with short setae, protruding beyond eyes; frontal suture not tuberculate, distinctly impressed laterally, widely interrupted medially; front with somewhat irregularly spaced coarse punctures. Pronotum transverse, convex, with dual evenly spaced punctures, large punctures, four times larger than small, lacking on disc; lateral margins weakly arcuate, with distinct border; basal border extremely thin medially. Scutellum weakly depressed basally, with distinct and irregularly spaced punctures on basal half. Elytra elongate, almost parallel-sided; striae well defined, with distinct punctures, slightly crenulate; interstriae weakly convex, with distinct almost fine punctures arranged laterally in regular longitudinal belt; punctation denser toward apex. Hind tibiae with superior apical spur shorter than first tarsomere; first tarsomere as long as following three combined. Male pronotum on disc with punctures less coarse than in female; fore tibiae with apical spur stouter and strongly outward curved; metasternal plate deeply excavate. Female fore tibiae with apical spur slender and weakly outward curved; metasternal plate almost flat.

Distribution: Russia, Ukraine, Kazakhstan.

Bionomy: All specimens examined were collected in May.

Figures

FIGURES 49 – 53. Liothorax rusakovi (Gusakov, 2004) (Ul’yanovsk Area, Radishchev Distr., Vyazovica Vill., Bank of Volga Riv.): 49. habitus of male; 50 – 51. aedeagus, dorsal and lateral view; 52. epipharynx; 53. habitus.