Sphegina bilobata

Sphegina bilobata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Syrphidae
Genus:	Sphegina
Species:	S. bilobata
Binomial name
	Sphegina bilobata; Hippa, Steenis & Mutin, 2015

Last updated October 11, 2023

Sphegina (Asiosphegina) bilobata is a species of hoverfly in the family Syrphidae found in Myanmar. It's set apart from other species by its general pale yellowish color with three black longitudinal stripes on the scutum combined with the infuscated pattern at cross veins on the wing. The male sternite IV with its symmetrical pair of short spinose lobes posteriorly is quite distinct.^[1]

Description

In male specimens, body length is 7.5 to 7.8 millimeters and wing length is 6.0 to 6.2 millimeters. The face is yellow, strongly concave with a strongly developed, brownish frontal prominence. The gena is shiny yellow; frons and vertex dull black; lunula yellow; occiput dull black; antenna entirely yellow; thorax dull yellow or yellowish; scutellum yellow or yellowish brown, shiny, trapezoid; pro- and mesoleg yellowish; protarsus and tarsomere 5 on mesotarsus brown; metaleg with coxa brownish, trochanter yellow, femur yellow with the apical 1/6 brownish and a ventrally interrupted annulus on the basal 1/2 weakly brownish, tibia with an apico-ventral tooth, colour yellow except the apical 1/5 brown and an annulus on the basal 1/2 brownish, tarsus brown. The wings are hyaline with yellowish stigma and brownish pattern. The basal flagellomere is enlarged, nearly 1.5 times as long as broad, and the arista is short and pilose.

Female specimens are much the same except for normal sexual dimorphism; body length is 8.4 millimeters and wing length is 7.5 millimeters. Protarsus yellow with tarsomere 5 obscure brownish yellow. Metaleg paler than in the male; femur almost entirely yellow, tibia without a distinct apico-ventral tooth, with brownish sub-basal annulus and apex; tarsus brownish dorsally. The abdomen is entirely yellow.^[1]

Related Research Articles

Sphegina (Asiosphegina) amplistylus is a species of hoverfly in the family Syrphidae found in the Philippines. It's similar to S. inflata, S. philippina, and S. spathigera.

Sphegina (Asiosphegina) atrimanus is a species of hoverfly in the family Syrphidae found in Vietnam.

Sphegina (Asiosphegina) bifida is a species of hoverfly in the family Syrphidae found in Malaysia. It's similar to S. (A.) inventum, though it's differentiated by having the male superior lobe on both sides longer than wide instead of wider than long.

Sphegina bracon is a species of hoverfly in the family Syrphidae found in Vietnam along with specimens of S. (A.) lucida, S. (A.) nigrotarsata, S. (A.) spenceri, S. (A.) verrucosa, and S. (A.) vietnamensis.

Sphegina (Asiosphegina) brevipilus is a species of hoverfly in the family Syrphidae found in China. It's similar to both S. (A.) plautus and S. (A.) simplex; it and S. (A.) plautus are the only known species with a sclerite between the bases of surstyli as well as posteriorly from the cerci.

Sphegina clavigera is a species of hoverfly in the family Syrphidae found in Vietnam. It's similar to S. crassispina and S. hauseri.

Sphegina collicola is a species of hoverfly found in Malaysia.

Sphegina crinita is a species of hoverfly in the family Syrphidae found in Malaysia and Indonesia. It's easily identified by its superior lobes, the left side one being pushed over the medial line of the hypandrium to the right side so that the right side one seems bilobed. Otherwise, the genitalia are nearly identical to those in S. fimbriata.

Sphegina uncinata is a species of hoverfly in the family Syrphidae found in Myanmar. It's easily identified by a straight dorsal line of frontal prominence that ends just before the ocellar triangle, a strongly projecting mouth edge, and a vibrissal angle more strongly protruding than the frontal prominence.

Sphegina (Asiosphegina) achaeta is a species of hoverfly in the family Syrphidae found in Myanmar. It's easily identified by the weak setae on abdominal tergite I. It's similar in appearance to S. adusta but easily differentiated upon closer examination. The male genitalia are similar to S. pollex and S. culex, though it can be distinguished by having an acute posterodorsal corner of the superior lobe and a broader surstylus; it differs further from S. pollex by lacking a sub-basal dorsal thumb-like lobe. The arrangement of bristles on tergite I is similar to S. japonica.

Sphegina (Asiosphegina) atricolor is a species of hoverfly in the family Syrphidae found in Myanmar.

Sphegina (Asiosphegina) bidens is a species of hoverfly in the family Syrphidae found in Myanmar.

Sphegina (Asiosphegina) carinata is a species of hoverfly in the family Syrphidae found in Kambaiti Pass, Myanmar, a montane forest with swampy areas and streams located 2000 meters above sea level.

Sphegina crassispina is a species of hoverfly in the family Syrphidae found in Kambaiti Pass, Myanmar, a montane forest with swampy areas and streams located 2000 meters above sea level. A specimen was found in China that fits the description of S. crassispina save for the more extensively shiny frons and the slightly more protruding frontal prominence.

Sphegina crucivena is a species of hoverfly in the family Syrphidae found in Kambaiti Pass, Myanmar, a montane forest with swampy areas and streams located 2000 meters above sea level.

Sphegina culex is a species of hoverfly in the family Syrphidae found in Kambaiti Pass, Myanmar, a montane forest with swampy areas and streams located 2000 meters above sea level.

Sphegina cultrigera is a species of hoverfly in the family Syrphidae found in Kambaiti Pass, Myanmar, a montane forest with swampy areas and streams located 2000 meters above sea level.

Sphegina apicalis is a species of hoverfly in the family Syrphidae found in Taiwan.

Sphegina (Asiosphegina) bispinosa is a species of hoverfly in the family Syrphidae found in India, Nepal, and Bhutan. It's similar to S. (A.) hansoni, but easily differentiated by the strongly asymmetrical surstyli.

Sphegina guptai is a species of hoverfly in the family Syrphidae found in India. It's similar to S. elegans in general appearance and characters of the male genitalia. It differs from known Oriental species of Sphegina by the shiny black abdomen with widened terga III and IV. Only S. quadrisetae has a somewhat similar appearance.

References

1 2 3 Hippa, H.; Steenis, J. van; Mutin, V.A. (2015). "The genus Sphegina Meigen (Diptera, Syrphidae) in a biodiversity hotspot: the thirty-six sympatric species in Kambaiti, Myanmar". Zootaxa. 3954: 1–67. doi:10.11646/zootaxa.3954.1.1. PMID 25947834 . Retrieved 4 November 2021.

This hoverfly article is a stub. You can help Wikipedia by expanding it.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

[SteenisHippaMutin2015-1] 1 2 3 Hippa, H.; Steenis, J. van; Mutin, V.A. (2015). "The genus Sphegina Meigen (Diptera, Syrphidae) in a biodiversity hotspot: the thirty-six sympatric species in Kambaiti, Myanmar". Zootaxa. 3954: 1–67. doi:10.11646/zootaxa.3954.1.1. PMID 25947834 . Retrieved 4 November 2021.

[1]