Tipula (Vestiplex) sintenisi Lackschewitz

Tipula (Vestiplex) sintenisi Lackschewitz

(Figs 27, 96–106; Map. 7)

Tipula sintenisi Lackschewitz, 1933: 246; 1936: 265.

Tipula (Vestiplex) sintenisi: Mannheims, 1953: 133 (lectotype designation).

Tipula (Vestiplex) transbaikalica Alexander, 1934b: 406; Savchenko, 1964: 186 (synonymy).

Tipula (Vestiplex) jakut Alexander, 1934a: 316. syn. nov.

Tipula (Vestiplex) jakut: Oosterbroek & Theowald, 1992: 155.

= Tipula (Vestiplex) arctica Savchenko: 1964, nec Curtis, 1835 (partim).

Type material examined. Tipula (Vestiplex) sintenisi Lackschewitz: PARALECTOTYPES: 1 ♂: SWEDEN, Curon, Kalwen, 5.vi.1932, Dr. P. Lackschewitz, Zool. Mus. Berlin (MNDB); 1 ♂, Curon, Kalwen, 8.vi.1933 (MNDB); 1 ♀, Curon, Kalwen, 2.vi.1932 (MNDB); 1 ♂, Curon, Kalwen, 5.vi.1932 (NHMV); 1 ♀, Curon, Kalwen, 2.vi.1932, BMNH (E)#246029 (BMNH).

Notes on types. The data on type series for T. (V.) sintenisi was omitted in Lackschewitz (1933, 1936) only Mannheims while designating the lectotype mentioned numerous males collected by Lackschewitz (1933). The summary for type specimens provided here is according to the literature and personal communications with European collections: LECTOTYPE ♂, PARALECTOTYPES 29 ♂, 1 ♀ (ZMHB); PARALECTOTYPE ♂: Curon. Kalwen, 2.vi.1932, Dr. P. Lackschewitz (SDEI) (Blech & Rohlfien 1987); PARALECTOTYPE ♂: (MZH) (Mannheims 1953); PARALECTOTYPE ♂: Curon, Kalwen, 14.vi.1932, Dr. P. Lackschewitz, T. sintenisi, nov. sp., Lacksch. Paratypus (MZLU).

Tipula (Vestiplex) transbaikalica Alexander: HOLOTYPE ♂: RUSSIA, E. Siberia, Transbaikal (ex Staudinger-Bang Haas), Borochojeva (USNM), antennae, wing and genitalia slide mounted (USNM).

Tipula (Vestiplex) jakut Alexander: HOLOTYPE ♀: RUSSIA, Far East, Khabarovsk Kraj, Ajan and Nelkan valley, 9–15.vi.1903, Popov, Nr. 442 (ZIN), antenna, leg and wing slide mounted (USNM).

Additional material examined. MONGOLIA. Hovsgol Aimag: 1 ♂, Knovsgol Nuur [= lake] area, E side, small stream, SW Jinkherlegiyn Khyr, N50º56′09″, E100º45′36″ 1679 m, 14.vi.1996, J.K. Gelhaus #717; 1 ♂, Renchinlhumbe Soum, Har Us springs and Jargalant Gol, 4.2 km SE. Renchinlhumbe, 1597 m, N51.07917, E99.70985, 1–2.vii.2006, J.K. Gelhaus #1061, SRP06070102. Tov Aimag: 1 ♂, Erdene Soum, Gorkhi Terelj NP, Galtain Spring 4.5 km upstream of road crossing, N48.18393, E107.96222, 1649 m, 9.vii.2003, SRPT, SRP03070901; 2 ♂, Erdene Soum, Gorkhi Terelj NP, unnamed trib. of Tuul River on West side, 1.6 km upstream from Daichin crossing, N48.21780, E107.90392, 1594 m, 9.vii.2003, SRPT, SRP03070902; 1 ♂, Erdene Soum, Unnamed river NE Khagiin Har Nuur, Gorkhi Terelj NP, N48.42080, E107.91406, 1818 m, 28.vii.2003, SRPT, SRP03072802; 2 ♀, Gorkhi Terelj NP, S Terelj, N47.91833, E107.44833, 1565 m, 28–29.vi.2009, S. Podenas & C.W. Young, MAIS2009062801. RUSSIA. 1 ♀, Eastern Siberia, Irkutskaya Oblast, Erbohogan village, river Lower Tunguska, 21.vi.1873, Chekanovsky (ZIN); 1 ♀, Russian Far East, Amur Oblast, Tukuringra mountain range, 19.vi.1957, Zinovjev (ZIN); 1 ♀, Kamchatka Peninsula, environs of Schanino, 2.vii.1958, Ivliyev (ZIN); 1 ♀, Siberia, Yakutiya, river Aldan near mouth of Timpton, 15.vi.1926; 1 ♀, 17.vi.1926; 1 ♀, 27–28.vi.1926, Zaykov (ZIN); 1 ♀, Yakutiya, Malaya Cherepaniha River near Olekminsk town, 8.vii.1907, Charitonov (ZIN); 1 ♀, Yakutiya, mouth of Vilyuy River—outfall of Bahanay River, 27.vi.1875, Chekanovsky (ZIN); 1 ♀, Krasnoyarsk Krai, river Lower Tunguska, 27.vi.1873, Chekanovsky (ZIN); 2 ♀, Krasnoyarsk Krai, Lower Tunguska River, 1.vii.1873, Chekanovsky (ZIN). SWEDEN. 1 ♂, Curon, Bathen, 19.vi.1927, Dr. P. Lackschewitz, T. sintenisi Lack. ex Berlin (ZMA); 1 ♂, Curon, Kalwen, 8.vi.1933, Dr. P. Lackschewitz (NHMV).

Elevation range in Mongolia. Adults were collected at altitudes ranging from 1800 m to 1600 m.

Period of activity. Adults are active from mid-June through to the end of July.

Known distribution. Estonia, Finland, Latvia, Lithuania, Mongolia (Map 7), Russia (European part, eastern part of Siberia, Far East) and Sweden.

Redescription. Male. Body length 15.3–15.8 mm, wing length 17.5–18.0 mm. General body coloration brownish yellow.

Head. Brownish gray, vertex and occiput gray, with narrow median line. Rostrum brownish yellow, dorsally sparsely dusted with gray, nasus conspicuous. Antenna 13-segmented, if bent backward not reaching base of wing. Scape, pedicel and first flagellomere yellow, succeeding flagellomeres brown. Each flagellomere except first one with small darkened basal enlargement and slightly incised at middle. Apical flagellomere very small, reduced, distinctly shorter than preceding flagellomere. Verticils shorter than corresponding segments. Palpus brown.

Thorax. Gray. Pronotum brown, gray pruinose, with broad brown median line. Prescutum and presutural scutum gray with 4 longitudinal stripes bordered by brown. Intermediate pair narrowly separated. Postsutural scutum gray, scutal lobe with 2 dark gray spots bordered by brown. Scutellum brown, postnotum gray pruinose with indistinct median line. Pleura brown, gray pruinose. Coxae gray pruinose. Trochanters and femora yellowish. Tibiae and tarsal segments brown. Distal part of femora darkened. Tarsal claws without tooth. Wing patterned with brown. Halter entirely yellow.

Abdomen. Brownish yellow, with brown broadly interrupted dorsal stripe and indistinct lateral stripe. Posterior and especially lateral margins of tergites pale. Tergite 1 yellow, sparsely dusted, tergites 2–6 brownish yellow, succeeding tergites dark brown. Lateral margins of tergites pale. Sternite 1 sparsely dusted with gray. Sternites 2–6 brownish yellow, succeeding sternites dark brown.

Hypopygium. Dark brown, at base slightly broader than abdomen. Tergite 9 in shape of relatively small narrower sclerotised plate (Fig. 96). Main body of tergal plate brown. Posterior margin of tergal plate with U-shaped notch, posterior lobe obliquely truncated with several coarse teeth. Anterior portion with tergal saucer elevated into transverse sclerotised plate, at base with median U-shaped notch providing tooth on either side. Gonocoxite unarmed (Fig. 97). Outer gonostylus in shape of flattened blade (Fig. 98). Inner gonostylus small, dorsal edge sclerotized, terminating as acute projection, beak extended into triangle-shaped rostrum (Fig. 99). Gonocoxal fragment large with lateral and medial sclerites well-developed (Fig. 100). Medial sclerites fused, anterior apodeme long and broad, posterior part flattened and arched. Lateral sclerite large and bilobed. Aedeagal guide in shape of slender, narrow tube (Fig. 101). Central vesicle of sperm pump small and flattened (Fig. 102). Compressor apodeme with median incision. Posterior immovable apodeme much longer than compressor apodeme, large and extended laterally into broad plate. Anterior immovable apodeme nearly triangle with apex obtuse. Aedeagus shaped as very long tube, about 18.3 times as long as sperm pump, basally dark brown, medially brown, apically passing into yellow. Distal part ventrally membranous, shovel-shaped.

Female. Body length 18.3–20.9 mm, wing length 15.5–16.3 mm. Differs from male by brownish gray body coloration. Antenna short, scape, pedicel and flagellomeres 2–3 yellow, succeeding flagellomeres brownish yellow indistinctly bicolorous. Wing distinctly patterned by brown.

Ovipositor (Figs 103–106). Tergite 10 shiny brown. Cercus reddish-brown, straight, slightly longer than tergite 10, with acute tip, outer margin with fine and obtuse serration (Fig. 103). Hypovalva in shape of filament with base slightly broadened, narrowed towards pale apex (Fig. 104). Depth of median incision between hypovalvae approximately at same level as posterior margin of sternite 8. Lateral margins of sternite 8 extending dorsally and nearly hiding base of tergite 10. Sternite 9 with anterior part medially slightly narrowed, posterior part rounded (Fig. 105). Furca conspicuously broadened anteriorly. Bursa copulatrix with spermathecal ducts sclerotised at base. Wall of bursa copulatrix at connection site with spermathecal ducts sclerotised. Sclerotisation of all 3 spermathecal ducts connected and forming complete light brown ring on wall of bursa copulatrix (Fig. 106). Cul-de-sac of bursa copulatrix curved. Spermatheca pear-shaped, distinctly broadened at base (Fig. 24).

Remarks. Tipula (V.) jakut was described from a single female by Alexander (1934) collected in the Russian Far East. The synonymy T. (V.) sintenisi = T. (V.) jakut syn. nov. was established after comparison of type specimens of both taxa and additional non-type material collected from Mongolia. Females of T. (V.) sintenisi can be recognized from sternite 8 which has the lateral angle highly raised and nearly hiding base of tergite 10.

Several females published by Savchenko (1964) from Russia, were erroneously identified as T. (V.) sintenisi. They were examined and re-identified here as T. (V.) arctica Curtis, 1835: 1 ♀, Siberia, Yakutiya, township Tiksi, 8.vii.1957, Shamurin (ZIN); 1 ♀, Yakutiya, Yakutsk, estuary of Kolyma river, right bank near Cape Tolstiy, 27.vii.1905, Buturlin (ZIN); 1 ♀, Russian Far East, Chukotka Peninsula, township Naukan, 13.viii.1948, Maslov (ZIN).