Lesteva (s.str.) antennata Shavrin, 2014

Shavrin, Alexey V., 2014, Review of the genus Lesteva Latreille, 1797 (Coleoptera: Staphylinidae: Omaliinae: Anthophagini) of Iran and adjacent territories, Zootaxa 3884 (2), pp. 122-140 : 123-125

Lesteva (s.str.) antennata Shavrin , sp. n.

( Fig. 1−4 )

Type material examined: IRAN: Holotype ♂: Golestan province [Ostān-e Golestān]: ‘ Golestan | 28 km S, Ramian , [h=] 1535 m., | N36°51'40.3'', E55° 14'15.8'' | 6.VI.2006, leg. [S.] Serri & [J.] Frisch’ , ‘ Holotype | Lesteva (s.str.) antennata sp.n. | A.V.Shavrin des. 2014’ <red rectangular label, printed> ( MNHUB) .

Description. Measurements: WH: 0.9; LH: 0.65; LA: 2.75; LE: 0.25; LT: 0.15; LP: 1.0; WPmax: 1.15; WPmin: 0.8; LES: 1.86; WE: 1.7; WA(IV): 1.67; LAE: 0.95; TL: 5.75.

Forebody and abdomen brown; antennae, mouthparts, ocelli, legs, apical margins of abdominal tergites VII−VIII yellow brown; tarsi and antennomere XI yellow. Pubescence of forebody decumbent, long, yellow; pubescence of abdomen very short, tender decumbent. Head with slightly convex frons and vertex, 1.3 times as wide as long, with moderately prominent eyes; eyes 1.6 times longer than moderately long temple; ocelli relatively large; distance between ocelli significantly shorter than the distance between ocellus and posterior margin of eye. Punctation deep, coarse and irregular, denser on infraorbital ridges and vertex; interspaces between punctures without microsculpture, glossy. Antennae with very long antennomeres ( Fig. 4 ), reaching anterior third of elytra; measurements of antennomeres: I: 0.325 × 0.125; II: 0.175 × 0.087; III: 0.25 × 0.086; IV: 0.225 × 0.087; V−IX: 0.25 × 0.087; X: 0.25 × 0.1; XI: 0.3 × 0.1. Pronotum small, convex and slightly transverse, 1.5 times longer than head, widest in anterior third, without discal impressions. Punctation deeper and coarser than that on head, significantly denser in medio-basal part; interspaces between punctures as wide as diameter of one puncture, without microsculpture, glossy. Scutellum with several coarse punctures; interspaces between punctures without microsculpture. Elytra very long, approximately twice longer than pronotum, moderately convex, hind margins widely rounded. Punctation denser than that on disc of pronotum, punctures larger; interspaces between punctures as diameter of two-three punctures, without microsculpture, glossy. Hind wings fully developed. Tarsomere I of metatarsus subequal in length to combined length of tarsomeres II−III, as long as tarsomere V. Abdomen convex, approximately as width of elytra; abdominal tergites with fine indistinct punctation and with isodiametric microsculpture; abdominal tergite V−VI each with two tomentose spots (tomentose spots on abdominal tergite V significantly larger).

Male. Abdominal sternite VIII with emarginated posterior margin. Aedeagus ( Fig. 1 ) moderately wide, in apical third gradually tapering to pointed apex; parameres slightly longer than apex of aedeagus; endophallus with parallel paired sclerotized structures in apical part. Aedeagus laterally as in Fig. 2 . Parameral surface of median lobe of aedeagus as in Fig. 3 .

Female unknown.

Comparative notes. Among its Western Palaearctic congeners, L. antennata is most closely related to L. bucharica Fauvel, 1900 based on the long antennomeres, coloration and length of tarsomere I of metatarsus. It differs from this species by the significantly larger body, by the shorter temples (temples of L. bucharica more than two times longer than the length of eye), by the finer and smaller punctation, and by the shape of aedeagus.

Etymology. The name " antennata " alludes to the long antennomeres of the new species.

Figures

FIGURES 1–3. Lesteva antennata sp.n.: 1—aedeagus, parameral view, 2—aedeagus, lateral view, 3—aedeagus, parameral surface of median lobe. Scale bar: 0.2 mm.

FIGURES 4–11. Antennae of Lesteva: 4—L. antennata sp.n., 5—L. binotata Reitter, 6—L. frischi sp.n., 7—L. longoelytrata longoelytrata (Goeze), 8—L. maculipennis Luze, 9—L. morvani Jarrige, 10—L. schawalleri sp.n., 11—L. punctata Erichson. Scale bar: 1.0 mm.