Lesteva (s.str.) jaegeri 2012

SHAVRIN, ALEXEY V., 2012, New and poorly known species of the genus Lesteva Latreille, 1797 (Coleoptera: Staphylinidae: Omaliinae) from Nepal, Zootaxa 3547 (1), pp. 78-84 : 82-84

Lesteva (s.str.) jaegeri sp. n.

( Fig. 5–6 )

Holotype: 3: ‘ NEPAL Annapurna `[19]97 | 10.6.TelbrungDanda | ca. 3200m / [Ch.] Schmidt’, ‘Ankauf A. Dobbertin | Rostock, 2001 | Museum. Dresden ’ ( SNSD).

Paratypes: 3 3, 1 ♀: same data as the holotype ( SNSD, CS) ; 2 3, 3 ♀: ‘ NEPAL Annapurna`97 | 13. 6.TelbrungDanda | 26 – 2800 m l. SCHMIDT’, ‘Ankauf A. Dobbertin | Rostock, 2001 | Museum. Dresden ’ ( SNSD) ; 1 ♀: ‘ NEPAL HIMALAYA | SE Annapurna mts. | Telbrung Danda’, ‘ Abies -Rhododendr [on].- | forest, 10.VI.1997, | 3200m, lg. [O.] Jäger’ ( SNSD) ; 4 3, 2 ♀: ‘ NEPAL HIMALAYA | SE Annapurna mts. | lg. [O.] Jäger, 1997’ <blue printed label>, ‘Telbrung Danda | near Gangpokhara | 2700m, 12./ 13.VI. ’ ( SNSD, CS) ; 1 ♀: ‘ Nepal Himalaya | Annapurna Mts. | leg. [O.] Jäger 1995’, ‘Lamjung Himal | südl. Taunja Danda | 3700 m, 9.VIII. ’ ( SNSD) ; 1 3, 4 ♀: ‘ NEPAL Manaslu Himal, Bhara | Pokhari lekh, 3000-3100 m | N28°18`24; E84°28`03, | Rhododendron forest | 3./ 4.IV.1999, leg. O. Jäger’ ( SNSD).

Description. Measurements (in mm, n=23). WH: 0.68–0.72; LH: 0.4; LA: 1.6; LE: 0.2; LT: 0.08–0.1; LP: 0.6–0.7; WPMax: 0.8–0.88; WPMin: 0.64–0.66; LEl: 1.24–1.48; WE: 1.42–1.54; WA: 1.12–1.28; LAed: 0.6; TL: 3.1–3.9 (holotype: 3.9).

Head, pronotum, elytra and abdomen black to reddish brown; ocelli, antennal segments III −XI (or IV −XI), legs and sometimes posterior margins of pronotum reddish-brown to yellow-brown; mouthparts and antennal segments I −II (or I −III) yellow-brown to yellow. Pubescence of head, pronotum and elytra decumbent, long, yellow; pubescence of abdomen shorter, yellow.

Head 1.7–1.8 times wider than long with large, weakly prominent eyes; eyes twice as long as temples; longitudinal furrows moderately deep; ocelli large, distinct; distance between ocelli equal to the distance between ocellus and posterior margiņ of eye; punctation dense, deep, rugose and evenly distributed, sparser on vertex; interstices between punctures as large as the diameter of one or two punctures, without microsculpture, glossy. Antennae long, reaching 1/3 of elytra; antennal segment XI slightly longer than I; measurements of antennomeres: I: 0.2 × 0.1; II −X: 0.14 × 0.08; XI: 0.22 × 0.08.

Pronotum cordate, transverse, moderately convex, distinctly wider than head, widest near anterior third; disc of pronotum sometimes with double longitudinal impressions along middle or with transverse impression posteriad; punctation as on head but denser and deeper, not rugose; interstices between punctures without microsculpture, glossy.

Scutellum triangular, without or with several small punctures, without microsculpture.

Elytra approximately twice as long as pronotum, relatively wide, convex, posterior angles broadly rounded, wide and convex; punctation as that on pronotum, punctures large, deep and densely distributed; interstices between punctures without microsculpture, glossy. Wings fully developed.

Tarsomere I of metatarsus shorter as tarsomeres II–IV, approximately as long as tarsomere V.

Abdomen distinctly narrower than elytra; abdominal tergites glossy, with fine isodiametric microsculpture, with fine punctures; tergites IV −V with paired tomentose patches.

Male. First four tarsomeres of protarsi weakly dilated. Sternite VIII with emarginate posterior margiņ. Aedeagus ( Fig. 5 ) relatively narrow, gradually tapering from bulbus towards apex; parameres slightly exceeding apex of aedeagus; endophallus large, long and with numerous thorns. Aedeagus laterally as in Fig. 6 .

Female. Tarsomeres of protarsi not dilated. Sternite VIII without emargination, straight apically.

Comparative notes. Based on the shape of the head, pronotum and elytra, the new species is closely related to L. fluviata from which it differs by the paler coloration, more fine punctation, wider antennomeres, shorter tarsomere I and the shape and structure of the aedeagus (aedeagus of L. fluviata wider, apex of aedeagus and paramerae narrower, endophallus shorter).

Etymology. The species is dedicated to my colleague Dr. Olaf Jäger (Dresden, Germany), one of the collectors of the type material.

Figures

FIGURES 5 – 6. Lesteva jaegeri: 5 — aedeagus, ventral view, 6 — aedeagus, lateral view. Scale bar: 0.1 mm.