Arnoldiola gemmae (Giraud, 1868)
Quercus robur / Andricus foecundatrix, gall, Belgium, prov. Namur, Couvin, Aublain © Sébastien Carbonelle
other specimens; the smaller larve in both pictures in all probability is Lestodiplosis necans
Quercus sp., Denmark © Simon Haarder: cocoon in gall of Andricus foecundatrix
larva, dissected out of the cocoon
inquiline in the galls of Andricus foecundatrix on oak. Bivoltine, pupation within the gall in a white cocoon.
In the literature the larve is described as being white. Because according to the literature no other cecidomyiid inquiline is known from foecundatrix galls, the Danish material is an unknown species. Possibly it is not a true inquiline, but a detritiphagous species.
A. gemmae is predated upon by Lestodiplosis necans.
Gagné (2010a), Skuhravá & Skuhravý (2007a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a). Skuhravá, Skuhravý & Dengler (1997a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a).