Tipula (Vestiplex) nubeculosa Meigen

Starkevich, Pavel, Podenas, Sigitas & Gelhaus, Jon K., 2020, Taxonomic review of Tipula (Vestiplex Bezzi) crane flies (Diptera: Tipulidae) in Mongolia, Zootaxa 4837 (1), pp. 1-88 : 59-62

Tipula (Vestiplex) nubeculosa Meigen

( Figs 18 , 129–141 ; Map 10 )

Tipula nubeculosa Meigen, 1804: 70 .

Tipula pseudoscripta Pierre, 1921:123 ; Mannheims, 1953: 123 (synonymy).

Tipula rubripes Schummel, 1833: 49 .

Tipula (Vestiplex) rubripes: Edwards, 1931: 80 ; Hemmingsen, 1956: 247; Hemmingsen & Lemche, 1965: 53; Savchenko, 1964: 223; Mannheims & Savchenko, 1967: 152; Mannheims, 1953: 123 (synonymy).

Tipula (Vestiplex) nubeculosa: Mannheims, 1953: 123 ; Mannheims & Theowald, 1959: 19; Tjeder, 1966: 280; Oosterbroek & Theowald, 1992: 157.

Material examined. MONGOLIA. Bayan Olgii Aimag: 1 ♀, Tsengel Soum, Ikh Khatuugiin Gol upstream of junction with Baga Khatuugiin Nuur stream, N49.04593, E88.50936, 2383 m, 13.vii.2008, S. Podenas, MAIS08071302 . Tov Aimag: 1 ♀, 12 km SE Ulan-Baator, Bogdo ul, 1500 m, 6.vi.1964, Exp. Dr. Z. Kaszab, Nr. 271 ( HNHM) ; 1 ♂, Suczukte Valley , SW Kentey, 13.vi.1925, Kozlov ( ZIN) ; 1 ♂, Erdene Soum, Gorkhi Terelj NP, mouth of Khag River at confluence with Tuul River , N48.25861, E107.90251, 1608 m, 10.vii.2003, SRPT, SRP03071002 ; 1 ♀, Erdene Soum, Gorkhi Terelj NP, unnamed trib. of Tuul River on E side 8.5 km downstream of Galtain Gol , N48.09720, E107.84928, 1542 m, 11.vii.2003, SRPT, SRP03071101 ; 1 ♀, Zuunmod Soum, Turgeniy Gol (stream), 8 km NNW Zuunmod, 1581 m, N47.77758, E106.92780, 14.vii.2006, J.K. Gelhaus #1073-B, SRP06071401 ; 1 ♀, Erdene Soum, Gorkhi Terelj NP, stream 0.5 km N Gorkhi Davaa ( Pass ), N47.94981, E107.45511, 1593 m, 11.vii.2011, S. Podenas, MAIS2011071101 . RUSSIA. 1 ♂, Buryatia, Ulan-de , 11.vii.1986, R . Ferenca , MZVUE550 ( MZVU) .

Elevation range in Mongolia. Adults were collected at altitudes ranging from 1500 m to 2400 m.

Period of activity. Adults are active from early to mid-July.

Known distribution. Europe, Russia (European part) and Mongolia ( Map 10 ). First record for eastern part of Russia.

Redescription. Male. Body length 17.6–18.3 mm, wing length 18.0– 19.1 mm. General body coloration brownish yellow.

Head. Brownish yellow, vertex and occiput dark gray, with narrow median line. Rostrum brownish yellow, nasus absent. Antenna 13-segmented, if bent backward reaching base of wing. Scape, pedicel and flagellomere 1 yellow, succeeding flagellomeres bicolored. Each flagellomere except first one with indistinct basal enlargement. Apical flagellomere very small, reduced, distinctly shorter than preceding segment. Verticils longer than corresponding segments. Palpus with 2 basal segments brownish yellow, succeeding dark brown.

Thorax. Brownish gray. Pronotum brownish yellow with brown median line. Prescutum and presutural scutum with 4 longitudinal stripes bordered by brown. Intermediate pair brownish gray, fused. Lateral stripe grayish. Interspace between median and lateral stripes gray. Postsutural scutum gray, scutal lobe with 2 spots bordered by brown. Scutellum brownish gray, postnotum brownish gray with narrow median line. Pleura brownish yellow, sparsely dusted with gray. Coxae yellow, sparsely dusted with gray. Trochanters yellow. Femora and tibiae yellowish. Tarsal segments dark brown. Distal part of femora and tibiae darkened. Tarsal claws without tooth. Wing distinctly patterned with brown. Halter with pale stem and brown knob.

Abdomen. Brownish yellow, without median stripe, with narrow lateral stripe. Tergites with pale lateral margin.

Hypopygium. Brown, at base slightly broader than abdomen. Tergite 9 forming plate reduced in size ( Fig. 129 ). Posterior margin of tergal plate blackened, broadly truncated with deep narrow median incision. Lateral lobe relatively narrow, margin with small black denticles, provided with long setae. Median incision with microscopic black points. Anterior portion brown with raised border appearing as transverse elevated plate connected to bottom of median incision and forming black toothed projection. Margin of transverse plate with black denticles, laterally with black tooth. Lateral portion of tergite 9 with apex obtuse, margin blackened, provided with microscopic points. Gonocoxite large with extended obtuse apex and small lateral denticle ( Fig. 130 ). Outer gonostylus slightly curved, finger-shaped ( Fig. 131 ). Inner gonostylus C-shaped curved plate, dorsally with round yellow plate, beak extended into blackened rostrum, shallowly bifid at apex ( Fig. 132 ). Gonocoxal fragment with medial sclerites flat, posteriorly narrow, anteriorly fused into broad base and together forming V-shaped structure ( Fig. 133 ). Lateral sclerite very small and inconspicuous. Aedeagal guide short with curved and acute apex and broad adminicular rods ( Fig. 134 ). Sperm pump with central vesicle flattened ( Fig. 135 ). Compressor apodeme shaped as large plate with shallow median incision. Posterior immovable apodeme short, finger-shaped. Anterior immovable apodeme in shape of large broad plate. Aedeagus shaped as short and thick brown tube, about same length as sperm pump. Distal part funnel shaped with median incision ( Fig. 136 ).

Female. Body length 22.3–29.0 mm, wing length 16.0– 22.8 mm. Generally similar to male. Antenna short, scape and pedicel yellowish, flagellum brownish yellow. Abdomen dark brown.

Ovipositor ( Figs 137–141 ). Tergite 10 shiny, dark-brown. Cercus, dark-brown, slender, with tip obtuse acute and slightly up-turned, outer margin with rough and distinct serration ( Fig. 137 ). Hypovalva in shape of pale yellow, elongated filament ( Fig. 138 ). Median incision between hypovalvae much deeper than posterior margin of sternite 8. Lateral incisions missing. Sternite 9 anteriorly acute with inner edge obliquely truncated, posterior part broadly extended ( Fig. 139 ). Furca anteriorly long and narrow, posteriorly broad ( Fig. 140 ). Bursa copulatrix including cul-de-sac straight with sclerotised wall ( Fig. 141 ). Basal part of spermathecal ducts without sclerotisation. Spermatheca nearly spherical, lightly broadened at base ( Fig. 19 ).

Remarks. Tipula (V.) nubeculosa is distributed in the Palaearctic Region, though very rare in East Palaearctic with single records in Mongolia and first record in eastern part of Siberia, Russia.

Figures

FIGURES 14–27. Spermathecae of Mongolian T. (Vestiplex). 14. T. (Vestiplex) longitudinalis; 15. T. (Vestiplex) virgatula; 16. T. (Vestiplex) pallitergata; 17. T. (Vestiplex) laccata; 18. T. (Vestiplex) balioptera; 19. T. (Vestiplex) nubeculosa; 20. T. (Vestiplex) scripta; 21. T. (Vestiplex) kiritshenkoi; 22. T. (Vestiplex) mediovittata; 23. T. (Vestiplex) subcentralis; 24. T. (Vestiplex) sintenisi; 25. T. (Vestiplex) coronifera; 26. T. (Vestiplex) tchukchi; 27. T. (Vestiplex) leucoprocta.

FIGURES 129–136. Hypopygium of male T. (Vestiplex) nubeculosa. 129. Tergite 9, dorsal view; 130. Gonocoxite, lateral view; 131. Left outer gonostylus, lateral view; 132. Left inner gonostylus, lateral view; 133. Gonocoxal fragment, dorsal view; 134. Aedeagal guide, lateral view; 135. Sperm pump, dorsal view; 136. Distal part of aedeagus, lateral view. Scale of 129–135 = 0.5 mm, 136 = 0.25 mm.

FIGURES 137–141. Ovipositor of female T. (Vestiplex) nubeculosa. 137. Ovipositor, left lateral view; 138. Sternite 8 with hypovalvae, ventral view; 139. Sternite 9, dorsal view; 140. Furca, dorsal view; 141. Bursa copulatrix, dorsal view. Scale of 137 = 0.8 mm, 138–141 = 0.5 mm.

MAPS 10–12. Distribution maps of T. (Vestiplex) crane flies in Mongolia. 10. T. (Vestiplex) nubeculosa; 11. T. (Vestiplex) pallitergata; 12. T. (Vestiplex) scripta.