Urothyreus Horváth, 1921

Urothyreus Horváth, 1921

Urothyreus Horváth, 1921: 146 . Type species by monotypy: Odontotarsus horvathianus ( Schouteden, 1908)

Diagnosis: Recognized by the following combination of characters: body elongate, covered with dense, pale vestiture and deep, rounded punctures ( Figs. 1 A­B, 3); head triangular, declivous ( Figs. 1­2); lateral margin of pronotum with small spines ( Figs. 1 A­B, 3); scutellum distinctly narrowed and divaricated apically ( Fig. 1 A­B); scent gland ostiole reduced; and male genital structures as described below and depicted on Figs. 4 A­D.

Most similar to species of the genus Odontotarsus by the coloration pattern, body proportions, reduction of metathoracic scent efferent system can be distinguished by dense pale vestiture, more slender body, different shape of head, spines on lateral margins of pronotum, shape of apical part of scutellum, and characters of male genital structures.

Redescription:

Body: elongate, medium sized, moderately convex dorsally and ventrally, covered with dense, pale vestiture; cryptic, yellowish brown coloration, with longitudinal brown­black stripes and rounded, irregularly distributed, deep punctures ( Figs. 1 A­B, 3). Head: triangular, declivous, covered with pale vestiture; clypeus (Cl) dilated and convex medially, widely rounded apically, lateral margin of head obtuse; buccula (Bc) highly elevated ( Fig. 2); antenna five­segmented, cylindrical; labium four­segmented reaching beyond posterior coxae. Pronotum: hexagonal in dorsal aspect ( Fig. 1 A, 3); convex; lateral margin with 8­9 small spines; humeral angles (Ha) furnished with spinelike process; posterolateral angle (Pla) rounded ( Fig. 3). Thoracic sterna: covered by pale vestiture ( Fig. 1 B); scent gland ostiole, peritreme and evaporatorial area of metapleurite reduced. Legs: femora with convex, unpunctured ring in distal part; tibiae short, with longitudinal furrow dorsally. Scutellum: enlarged, covering most of abdomen dorsally, leaving only basal part of fore wings exposed ( Fig. 1 A); reaching beyond apex of abdomen; apical part distinctly narrowed, elevated, divaricated and recurved superiorly ( Fig. 1 B). Pregenital abdomen: abdominal sterna ( II­VII) convex, posterolateral angles produced into small spine; stridulatory vittae absent; pale vestiture dense ( Fig. 1 B). External male genitalia: genital capsule ovoid, oriented dorsally, covered by apical part of scutellum; phallus with moderately sclerotized phallotheca (Ph) and with three pairs of conjuctival appendages ( Fig. 4 C, D): vesica ( V) moderately sclerotized, tubiform ( Figs. 4 C, D).