Cheilosia suspecta Barkalov & Cheng, 2004

Barkalov, Anatolij V. & Ståhls, Gunilla, 2022, Cheilosia (Diptera, Syrphidae: Rhingiini) of Nepal with descriptions of 29 new species, European Journal of Taxonomy 829 (1), pp. 1-127 : 113-116

Cheilosia suspecta Barkalov & Cheng, 2004

Fig. 62

Material examined

NEPAL • 2 ♂♂; Gosainkunde ; 14 800 ft a.s.l.; 27 Jun. 1967; Can. Nepal Exped.; CNC • 1 ♀; 27°58′ N, 85°00′ E; 11 100 ft a.s.l.; 26 Jun. 1967; Can. Nepal Exped.; CNC • 1 ♂; Prov. Gandaki, Namrung to Lho Baza; 2580–3100 m a.s.l.; 16 May 2013; J. Weipert leg.; labcode MZH _ Y2672 ; BSJW/ NME .

Remark

The specimens from Nepal differ from the description of C. (C.) suspecta by having dark colour of basoflagellomere in both male and female, dark-orange with darkened marigin in the original description.

Distribution

China, Nepal.

Сheilosia vellea sp. nov.

urn:lsid:zoobank.org:act:CB1FB230-8C09-46F6-8800-8CDD19BE20F7

Figs 63 , 64A–B

Differential diagnosis

Cheilosia (Floccocheila) vellea sp. nov. is morphologically close to C. (F.) illustratoides sp. nov. and C. (F.) indistincta sp. nov. For distinguishing characters, see Differential diagnosis under C. (F.) illustratoides sp. nov.

Etymology

The specific epithet is from the Latin ‘ vellus ’ meaning ‘cut wool’, referring to the dense pilosity of the species.

Material examined

Holotype NEPAL • ♂; Prov. Karnali, SE Churta vor Pass; 3400 m a.s.l.; 5 May 1995; J. Weipert leg.; BSJW / NME.

Description

Male

LENGTH. Body 10 mm, wing 10 mm.

HEAD. Face broad, not very protruded, in anterior view distinctly broadened ventrally, black, non-pilose, densely grey pollinose, with longer microtrichia medio-laterally, with shiny stripes lacking pollinosity ventrally; facial tubercle not distinct, narrow; parafacia very broad, in broadest part almost equal to width of basoflagellomere, grey pollinose and long, yellow pilose, and with some black pilosity ventrally; gena broad, densely grey pollinose and long yellow pilose. Frons very broad, frontal angle obtuse (> 110º), grey pollinose, more dense pollinose along eye, and with long yellow and black pilosity; lunule brown, antennal pits distinctly separated. Antenna black, basoflagellomere rounded, densely brown pollinose; arista long, black, with very short pile (clearly shorter than width of arista at broadest point). Eye with dense, long black pilosity; eye contiguity shorter than length of frons. Vertex inflated, grey pollinose and long yellow pilose, ocellar triangle equilateral. Occiput densely grey pollinose, yellow pilose.

THORAX. Postpronotum black, grey pollinose and yellow pilose. Scutum grey pollinose on anterior part anterior to transverse suture, and narrowly at postalar calli and anterior to scutellum, shiny on posterior ⅔ part; with dense, long pilosity – yellow on pollinose parts and black on shiny part, with a broad band of black pilosity between wing bases; without strong black bristles. Scutellum medially shiny on disc, all margins grey pollinose, with dense yellow and black pilosity, without strong bristles. Subscutellar fringe with long yellow pilosity. Pleura densely grey pollinose, with long dense pilosity, anepisternum antero-ventrally with black pile and otherwise yellow pilose, katepisternum completely covered with mixed black and yellow pilosity, anepimeron with yellow pilosity. Metasternum with dense black pilosity, and a few long yellow pile.

LEGS. Coxa black, grey pollinose and black pilose, fore coxa without baso-lateral spur; femora black with yellowish tips, covered with dense long black pilosity anteriorly up to 1.5–2× longer than width of femur, and yellow pile on posterior-basal ⅔ part; tibia brown on basal ⅓–½ and on tips and black otherwise, with black pilosity; tarsi black dorsally and yellow ventrally.

WING. Entirely microtrichose, finely brownish in anterior half and along cross veins, inner angle between veins M 1 and R 4+5 right. Calypter mostly yellow, black basally, fringe yellow. Haltere with stem yellow and black knob, knob ventrally with some short pile.

ABDOMEN. Oval, in broadest part broader than scutum at level of wing base, brownish-black; tergite I grey pollinose and yellow pilose, and some black pilosity laterally, tergite II with yellow pilosity, tergite III with black pilosity antero-laterally and yellow pilose otherwise, tergite IV with only yellow pilosity [pilosity almost completely worn off medially on tergites II–IV]. Sternites black-brown with mostly black, long pilosity, sternite I mainly with long, yellow pilosity, and posterior margins of sternites I and III with some long yellow pile.

Female

Unknown.

Distribution

Nepal.

Figures

Fig. 62. Cheilosia (Cheilosia) suspecta Barkalov & Cheng, 2004. A. Male head, lateral view. B. Female head, anterior view. C. Aedeagus and aedeagal apodeme, lateral view. D. Superior lobe of hypandrium, lateral view. E. Basoflagellomere, lateral view. F. Tip of wing. G. Surstylus and gonocercus, lateral view. After Barkalov & Cheng 2004. Scale bars indicated in drawings.

Fig. 63. Cheilosia (Floccocheila) vellea sp. nov., holotype, ♂ (IBSJW/NME). A. Head, lateral view. B. Antenna, lateral view of pedicel and basoflagellomere. C. Tip of wing. D. Superior lobe of hypandrium, lateral view. E. Surstylus and gonocercus, lateral view. F. Aedeagus and aedeagal apodeme, lateral view. Scale bars indicated in drawings.

Fig. 64. A–B. Cheilosia (Floccocheila) vellea sp. nov., holotype ♂ (BSJW/NME); dorsal and lateral view. – C–E. Cheilosia versa sp. nov., holotype, ♀ (CNC); dorsal and lateral views. Scale bars: A–D = 1 mm; E = 0.5 mm.