Hydrophilopsia longitarsalis Ponomarenko, 1987

Fikáček, Martin, Prokin, Alexander, Angus, Robert B., Pono, Alexander, Marenko, Yue, Yanli, Ren, Dong & Prokop, Jakub, 2012, Revision of Mesozoic fossils of the helophorid lineage of the superfamily Hydrophiloidea (Coleoptera: Polyphaga), Acta Entomologica Musei Nationalis Pragae 52 (1), pp. 89-127 : 92

† Hydrophilopsia longitarsalis Ponomarenko, 1987

( Figs. 1–4 , 42–48 )

Hydrophilopsia longitarsalis Ponomarenko, 1987: 94 .

Type locality and age. Russia, Chita Region , Daya outcrops [left bank of the Daya river above the Shiviya falls]. Latest Jurassic, Tithonian, ca. 151–146 mya ( RASNITSYN 1990, SINITSHENKOVA & ZHERIKHIN 1996; Vasilenko, pers. comm. to A. Prokin, 2011) .

Material examined (1 spec.). HOLOTYPE: PIN 3063/614 (piece and counterpiece).

Redescription (male). Body elongate oval, 9.7 mm long. Head with distinct lateral portions of frontoclypeal suture, median portion weakly preserved and probably not grooved, dorsal surface of head finely punctate, without setiferous granules. Narrow postocular bridge present. Mentum transverse, 1.5× wider than long, finely punctate. Gula wide, with fine median longitudinal ridge. Antenna with 9 antennomeres (i.e. with three intermediate antennomeres, Fig. 3 ), scape long, terminal three antennomeres forming a club. Pronotum slightly narrowing anteriad, arcuate laterally, with protruding anterolateral corners, longitudinal grooves not preserved (probably absent), lateral margins smooth; pronotal flanks very wide, the ridge delimiting them from inner portion of hypomeron arcuate in shape. Mesanepisterna not meeting medially, mesoventrite strongly narrowing anteriad, very narrow at anterior margin, bearing a transverse ridge posteriorly. Mesocoxal cavities only very narrowly divided from each other. Elytron with 10 elytral series, scutellary stria not preserved, all elytral intervals of the same height, epipleuron narrow, subdivided into wider inner and narrower outer parts. Metaventrite much longer than mesoventrite, metanepisternum with oblique transverse ridge anteriorly. Mesotibia with sparsely arranged swimming hairs, its apex with several spines; mesotarsus with five tarsomeres, each with series of swimming hairs dorsally, tarsomere 1 shortest, tarsomere 2 longer than tarsomere 3, claws long, arcuate.Abdomen with five ventrites, posterior margin of ventrite 5 possibly with rectangular teeth.Aedeagus similar to Helophorus in general shape, phallobase with acute symmetrical manubrium.

Figures

Figs. 1–4. Hydrophilopsia longitarsalis Ponomarenko, 1987 (holotype). 1 – piece, general view; 2 – counterpiece, general view; 3 – detail of antenna; 4 – detail of the aedeagus. Scale bar: 2 mm (corresponds to Figs. 1–2). Abbreviations: acl – antennal club; aed – aedeagus; ant – antenna; cup – cupule; ins – intermediate antennomeres; ped – pedicel; sc – scapus.

Figs. 42–52. Representatives of Hydrophilopsia Ponomarenko, 1986 and Laetopsia gen. nov. 42–48 – Hydrophilopsia longitarsalis Ponomarenko, 1986, holotype (42–43 – piece and couterpiece, general views; 44 – detail of the head and thorax, photo under alcohol; 45 – same, photo in dry state; 46 – detail of aedeagus; 47 – legs of piece, 48 – legs of counterpiece). 49–52 – Laetopsia shatrovskiyi (Prokin, Ren & Fikáček, 2010) (49, 51 – CNU 2009199; 50, 52 – CNU 2010242).