Sphegina (Asiosphegina) furva, Hippa, Heikki, Steenis, Jeroen Van & Mutin, Valeri A., 2015

Hippa, Heikki, Steenis, Jeroen Van & Mutin, Valeri A., 2015, The genus Sphegina Meigen (Diptera, Syrphidae) in a biodiversity hotspot: the thirty-six sympatric species in Kambaiti, Myanmar, Zootaxa 3954 (1), pp. 1-67 : 58

publication ID

https://doi.org/ 10.11646/zootaxa.3954.1.1

publication LSID

lsid:zoobank.org:pub:AA3DB71F-AD9A-4205-889B-FB212E367A37

DOI

https://doi.org/10.5281/zenodo.5692231

persistent identifier

https://treatment.plazi.org/id/6B82028D-5727-4C1C-83D2-2C66371FC126

taxon LSID

lsid:zoobank.org:act:6B82028D-5727-4C1C-83D2-2C66371FC126

treatment provided by

Plazi

scientific name

Sphegina (Asiosphegina) furva
status

sp. nov.

Sphegina (Asiosphegina) furva View in CoL sp. n.

Figs 2 View FIGURE 2 B, 36A–E

MALE. Body length 6.5–7.7 mm, wing length 6.0– 6.5 mm. Head. Face strongly concave and weakly projected antero-ventrally; frontal prominence weakly developed (similar to Fig. 1F). Width of vertex at anterior ocellus ca. 1/5 of the width of head [1:4.8]; depth of occipital fossa 1/5 of the width of an eye in dorsal view. Width of face:width of head 1:4.4. Face black, densely pale pollinose, weakly medio-ventrally. Gena shiny brownish. Frons and vertex black, pale pollinose, frontal prominence posteriorly with diffuse fascia of dense pollinosity, otherwise shiny; lunula shiny brown; the pile short, erect and pale. Occiput dull black. Antenna dark brown, basoflagellomere oval, extreme base reddish; arista pilose. Eye with an area of enlarged facets at anterior margin. Thorax. Colour black, densely pale pollinose on pleura; scutum with a medial and sublateral semi-shiny fascia or almost uniformly weakly pollinose, the pile adpressed and usually reddish; scutellum semicircular (ratio of length:width 1:2.7), semishiny, with adpressed brownish pile; a pair of long black setae at apical margin, rather widely separated. Wing, Fig. 2 View FIGURE 2 B. Hyaline, stigma brownish. Legs. Pro- and mesoleg: coxa yellow; trochanter yellow, femur brownish, the extreme base and apex yellowish; tibia yellow with a more or less broad brownish annulus on apical 1/2; tarsus yellow, tarsomeres 4 and 5 black. Metaleg: coxa black; trochanter simple, yellow or brownish; femur blackish, the basal 1/6 yellow; tibia without distinct apico-ventral tooth, yellow, the apical 1/3 to 1/4 brown and a brownish annulus medially; tarsus black. Abdomen. Length ratio of tergites I, II, III and IV 1:3.3:1.7:1.3. Colour of tergites shiny black, tergite III on anterior 1/2 with an obscure reddish fascia broadening laterally; the pile pale, short and adpressed, becoming longer laterally; tergite I with an oblique row of 4–5 long, pale setae laterally; sternite IV ( Figs 36 View FIGURE 36 A, B) brown, with fine dense pale pile: sternite VI ( Fig. 36 View FIGURE 36 A) simple, black, with an area of long pale pile; sternites VII and VIII black, with pale pile. Genitalia, Figs 36 View FIGURE 36 C–E. Note the strongly asymmetrical surstyli, the only slightly asymmetrical superior lobes, the strongly asymmetrical postero-ventral part of sternite IX, the elongated tergite IX, and the narrow cercus. FEMALE. Unknown.

Type material. HOLOTYPE. ♂, N.E. Burma, Kambaiti, 7000 ft., 7.vi.1934, R. Malaise ( BMNH). PARATYPES. 1♂ with same data as holotype except 1.v. ( BMNH); 1♂ with same data except 16.v. ( SMNH); 1♂ with same data except 20.v. ( NBC); 1♂ with same data except 2.vi. ( NBC); 1♂ with same data except 2000 m., 17.v. ( SMNH); 1♂ with same data except 2000 m., 24.v. ( NBC).

Etymology. The name is Latin, furva , dusky or black, referring to the general dark colour of the fly.

Discussion. Sphegina furva is similar to S. atricolor . For further discussion see under the latter species.

SMNH

Saskatchewan Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Genus

Sphegina

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