Dioctriinae

Dennis, Steve, Barnes, Jeffrey K. & Knutson, Lloyd, 2013, Review and analysis of information on the biology and morphology of immature stages of robber flies (Diptera: Asilidae), Zootaxa 3673 (1), pp. 1-64 : 6

Subfamily Dioctriinae

There is limited information on the immature stages of the subfamily Dioctriinae . The females drop 1 to 18 eggs per oviposition on vegetation or the ground. The reddish brown or dull brown, subspherical to oval eggs are 0.40 to 0.56 mm in length and 0.30 to 0.48 mm in width. Examination of the eggs with a SEM indicates that they have surface sculpturing such as 5- to 7-sided polygons, oval rings, pimples, and elevated ridges. Aeropyles are present inside or outside of rings and may be surrounded by slightly elevated ridges. There is one micropyle in a smooth area that may be surrounded by cup-like structures.

Dioctriinae larvae and pupae develop in the soil or decaying wood. Some morphological information has been published on the larvae and pupae of Dioctria .