Eorhipidius Iablokoff-Khnzorian, 1986

Batelka, Jan & Hájek, Jiří, 2009, A taxonomic review of the genus Eorhipidius (Coleoptera: Ripiphoridae: Ripidiinae), with descriptions of three new species from Asia, Acta Entomologica Musei Nationalis Pragae 49 (2), pp. 769-782 : 771-772

Eorhipidius Iablokoff-Khnzorian, 1986

Eorhipidius Iablokoff-Khnzorian, 1986: 89 (original description; gender masculine).

Type species. Eorhipidius januschevi Iablokoff-Khnzorian, 1986 (by monotypy).

Redescription. Body elongate, gracile, of anthicid-like form. Elytra shortened. Body colouration dark brown, maxillary palps yellowish, metathoracic wings hyaline with dark veins. Surface rugose, coarsely punctured, smooth between punctures, covered with short pale semierect setae.

Measurements: Body length (without mandibles) 2.2–3.2 mm, maximum width (at humeri) 0.6–0.9 mm.

Head prognathous, occiput slightly elevated above anterior margin of pronotum, sometimes bilobed; gula Y-shaped; compound eyes convex, oval, in some species shallowly emarginate posteriorly, occupying about two thirds of lateral side of head, each consisting of about 100–140 protuberant ommatidia; postocular ommatidia absent; antennal cavity reaching margin of eye or narrowly separated from it; antenna inserted dorso-anteriorly of eyes, consisting of 11 simple antennomeres; scape and pedicel short, club-shaped, antennomeres III–XI long, parallel-sided, antennomere XI acute apically; mouthparts reduced: labrum absent; mandible simple, sickleshaped, truncate apically in some species, with single apical tooth; maxilla well developed, lacinia short and oval, galea long and slender with apex inflexed, bearing long setae ventrally, palpifer cylindrical, maxillary palp tetramerous, cylindrical, with palpomere IV longest, as long as or longer than combined lengths of palpomeres II and III; labium absent.

Thorax. Prothorax well developed; pronotum bell-shaped with prominent posterior angles; prothoracic coxal cavities widely separated. Mesothorax rather small; mesoscutellar shield well developed, convergent apically; elytra shortened, adjacent to each other subbasally, narrowed near midlength, slightly dehiscent apically and reaching midlength of abdomen, rounded apically. Metathorax large, metepisternum triangular, expanded posteriorly; metathoracic coxae large, protruding posteriad; metathoracic wings hyaline, venation extremely reduced, generally identical with that of Ripidius Thunberg, 1806 , veins only indistinctly shorter than as illustrated by BESUCHET (1956: Fig. 70); subcosta, well-sclerotized simple radius, media, cubitus and anal vein reaching close to edge of wing, pigmented pterostigma absent, replaced by weakly sclerotized, slightly darker area between anterior margin and apical part of radius. Legs long and slender, tarsal formula 5-5-4, tibial spurs absent; tibiae with several erect setae on apical edges, tarsomere I slightly shorter than tarsomeres II–IV combined, claws simple.

Abdomen tubular, narrow, bearing six visible ventrites (which we interpret as sternites III–VIII), last ventrite with deep apical emargination. Abdomen in mounted specimens sometimes deformed, e.g. into a knob-like shape as illustrated by IABLOKOFF- KHNZORIAN (1986: Fig. 6 ).

Male external genitalia with median lobe simple, tubular, parameres fused, apically slightly incised, their lateral sides twisted.

Figures

Figs. 5–8. Head and pronotum, dorsal view. 5 – Eorhipidius januschevi Iablokoff-Khnzorian, 1986; 6 – E. jelineki sp. nov.; 7 – E. loebli sp. nov.; 8 – E. ruzickai sp. nov. Not to scale.