''Euchariomyia'' is a

monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

of the subfamily

Bombyliinae Bombyliinae is a subfamily of bee flies in the family Bombyliidae. There are more than 70 genera in Bombyliinae. Genera These genera and tribes belong to the subfamily Bombyliinae: ;Subfamily Bombyliinae Latreille, 1802 * Tribe Acrophthalmy ...

. The only species is ''Euchariomyia dives''.

Taxonomy

''Euchariomyia dives'' is described by French entomologist

Jacques-Marie-Frangile Bigot Jacques Marie Frangile Bigot (1818–1893) was a French naturalist and entomologist most noted for his studies of Diptera. Bigot was born in Paris, France, where he lived all his life, though he had a small house in Quincy-sous-Sénart, Essonne. H ...

in 1888. This species is highly variable in appearance and earlier placed in four separate species. However, further study revealed that they are all belongs to one species.Evenhuis, Neal & GANG, YAO. (2016)
Review of the Oriental and Palaearctic bee fly genus ''Euchariomyia'' Bigot (Diptera: Bombyliidae: Bombyliinae)
Zootaxa. 4205. 211. 10.11646/zootaxa.4205.3.2.

Distribution

''Euchariomyia dives'' is mainly known from southern and eastern Asia.Yao, G., Yang, D. & Evenhuis, N.L. (2009) First record of the genus ''Euchariomyia'' Bigot, 1888 from China (Diptera: Bombyliidae). Zootaxa, 2052, 62–68. They are reported from Burma, China (Beijing, Guangxi, Shandong), India (Kerala, Orissa, Tamil Nadu, Uttar Pradesh), Indonesia (Java, Sumatra), Laos, Malaysia (Kelantan, Penang), Sri Lanka, Thailand, and Vietnam.Banerjee, D. & Mitra, B. (2006) Diversity of bee flies (Bombyliidae: Diptera) in India. Zoological Survey of India, Occasional Paper, 252, 1–30.

Description

They are small in size (4-6 mm), head with a long proboscis, iridescent wings, and long, slender legs. There are conspicuous silvery tufts of scale-like hairs on the head, thorax, and abdomen. The legs are dark brown with short hairs. The wings are dark brown to light brown.

Male

The body length 3.5-6.0 mm and the wing length 5-7 mm. It has a black head and a face with long sparse black hairs. They have long white scales just above antennae and compound eyes are

holoptic Holoptic refers to one of the ways in which the arthropod eye develops, particularly the eyes of various species of insects. Unlike dichoptic and cycloptic eyes, holoptic eyes meet along the median dorsal line of the head, in many species near ...

. Proboscis extend well beyond oral margin up to 8 times head length. Thorax is black and grey and the surface covered with a fine yellow dust, like pollen except

pronotum The prothorax is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs. Its principal sclerites (exoskeletal plates) are the pronotum ( dorsal), the prosternum (ventral), and the propleuron (lateral) on e ...

. The abdomen is black and the dorsal side has dense, silvery white scales, but exhibits variation between individuals.

Female

The body length is 4-6 mm and the wing length is 5-7 mm. It has aack head, sides of antenna with long white scales and compound eyes are dichoptic. The proboscis is black and nearly three times longer than head. The abdomen of the female is black and the dorsal side has red to orange scales, showing little variation among individuals.

References

{{Taxonbar, from=Q14676312 Bombyliidae Insects described in 1888 Taxa named by Jacques-Marie-Frangile Bigot Monotypic taxa