Lesteva (s.str.) fluviata Champion, 1920

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 : 79-80

Lesteva (s.str.) fluviata Champion, 1920

( Fig. 1–2 )

Lesteva fluviata Champion, 1920:246

Lesteva fluviata: Lohse, 1982:203

Type material examined: Paratype of Lesteva fluviata , 1 3 (specimen was dissected earlier, aedeagus missing): ‘3’, ‘ fluviata |3 [handwritten], Para-|type’ <printed circle label with yellow margin>, ‘W. Almora. | Kumaon. | India. H.G.C.’, ‘ H.G. Champion Coll | B.M. 1953-156.’, ‘ Lesteva | fluviata, Champ. | G.C.Champion det.’, ‘Coll. G.A. Lohse | MHNG-1994 ’ ( MHNG) ; paratypes of Lesteva fluviata , 2 ♀: specimens glued on one plate; same data as the previous (3−5 labels) ( MHNG) ; paratype of Lesteva fluviata , 1 ♀: ‘Para-|type’ <printed circle label with yellow margin>, ‘♀, ‘W. Almora Divn | Kumaon U.P. | Nov. 1914 [last cypher handwritten] H.G.C.’, ‘H.G. Champion Coll | B.M. 1953-156.’, ‘1803’, ‘ Lesteva | fluviata, Champ. | G.C.Champion det.’, ‘Coll. G.A. Lohse | MHNG-1994 ’ ( MHNG).

Additional material: INDIA: 1 ♀: Uttarakhand, 10 km NW New Tehri, N30°27'04.4'' E078°23'13.0'', h= 1200 m, 09- 10.04.2012, A.V. Shavrin (CS) ; NEPAL: 3 3: ‘ NEPAL (Prov. Bagmati) | above Sundarijal | 2000 m, 4.IV.81 | [I.] Löbl & [A.] Smetana’, ‘Coll. | G.A. Lohse | MHNG-1994 ’, ‘ Lesteva | fluviata Chp. [handwritten] | det. Dr. G.A. Lohse’ ( MHNG) .

Redescription. Measurements (in mm; n=8). WH: 0.66–0.7; LH: 0.42–0.44; LA: 1.6; LE: 0.22−0.24; LT: 0.09−0.1; LP: 0.64–0.7; WPMax: 0.8–0.84; WPMin: 0.62–0.64; LEl: 1.36–1.4; WE: 1.32–1.4; WA: 1.2−1.28; LAed: 0.64; TL: 3.2–4.3.

Head, disc of pronotum, elytra and abdomen dark brown; ocelli, antennal segments, tibiae and apex of femora brown; bases of antennal segments, femora, posterior margins of pronotum and elytra, and apical margins of tergites rufo-testaceous; mouthparts and tarsi yellow. Pubescence of head, pronotum and elytra decumbent, long, white; pubescence of abdomen dense, shorter and yellow.

Head 1.5–1.6 wider than long, with rather prominent large eyes; eyes twice as long as temples; longitudinal furrows deep; ocelli distinct; distance between ocelli slightly smaller than distance between ocellus and posterior margiņ of eye; punctation dense, deep and evenly disturbed, rugose on sides and occipital area, sparser on vertex; interstices between punctures without microsculpture, glossy. Antennae moderately long and slender, reaching 1/3 of elytra; antennal segment II slightly wider than III; measurements of antennomeres: I: 0.2 × 0.08; II: 0.14 × 0.06; III −X: 0.14 × 0.056; XI: 0.2 × 0.08.

Pronotum cordate, moderately convex, slightly wider than head, widest near anterior third; disc of pronotum sometimes with indistinct transversely impression posteriad; punctation dense, deep and evenly distributed; interstices between punctures without microsculpture, glossy.

Scutellum triangular, with several small punctures and without microsculpture.

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

Tarsomere I of metatarsus approximately as long as tarsomeres II–IV, slightly longer than tarsomere V.

Abdomen slightly narrower than elytra; abdominal tergites glossy, with fine isodiametric microsculpture, without visible punctures; tergites IV −V with paired tomentose patches.

Male. First four tarsomeres of protarsi weakly dilated. Sternite VIII with broadly emarginate posterior margiņ. Aedeagus ( Figs. 1 ) wide, base of bulbus large, median part narrowed towards very thin and long apex; parameres slightly exceeding apex of aedeagus, apex of parameres widened, with four setae; endophallus appearing as two long parallel structures with numerous thorns inside. Aedeagus laterally as in Fig. 2 .

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

Comparative notes. See comparative notes under L. jaegeri sp. n. and key to the species.

Remarks. L. fluviata was described from North India, Uttarakhand, and was “..found in abundance in moss in streams in W. Almora and Ranikhet” ( Champion, 1920:247).

Figures

FIGURES 1 – 2. Lesteva fluviata: 1 — aedeagus, ventral view, 2 — aedeagus, lateral view. Scale bar: 0.1 mm.