Didea

Diagnosis

For terminology see Speight key to genera and glossary This genus has an abdomen that is large, broad, flat, and strongly emarginated, having narrowly divided yellow, yellow-green, or pale green bands. The scutum is black and either shining or subshining. The notopleural callus and postsutural scutal margin of some specimens are obscurely yellowish, and the ventral scutellar fringe is short and sparse. The pleura is black with densely pale-pruinose areas on the upper half, and the anterior anepisternum is bare. The upper and lower katepisternal hair patches are broadly separated, the meron is bare, and the metepisternum and metasternum both have some hairs. The R 4+5 vein is moderately dipped into the cell r4+5, and the lower calypter has very few fine, pale, erect, and scattered hairs on the upper surface. There are several hairs at the posteromedial apical angle of the hind coxa.

Species

The following species are recognized:{{Catalogue of Life |access-date= 26 January 2023

|Didea alneti |(Fallén, 1817) |Didea fasciata |Macquart, 1834 |Didea fuscipes |Loew, 1863 |Didea intermedia |Loew, 1854 |Didea poorva |Ghorpadé, 1994 |Didea subalneti |Claussen & Weipert, 2003 |Didea vockerothi |Ghorpadé, 1994 |Didea zhongtiaoshanensis |Huo & Wang, 2014

References

References

1. (1983). "British Hoverflies: An Illustrated Identification Guide". British Entomological & Natural History Society.
2. Van Veen, M.P.. (2004). "Hoverflies of Northwest Europe, Identification Keys to the Syrphidae". KNNV Publishing.
3. (1992). "The Flower Flies of the Subfamily Syrphinae of Canada, Alaska, and Greenland (Diptera: Syrphidae). Part 18. The Insects and Arachnids of Canada". Canadian Government Pub Centre.