Janetia homocera (Löw, 1877)

Diptera, Cecidomyiidae

on Quercus

Janetia homocera: galls on Quercus cerris

Quercus cerris, Hongarije, Budapest © László Érse

Janetia homocera: galls on Quercus cerris

underside of the leaf

Janetia homocera: gall on Quercus cerris: upperside

gall, upperside

Janetia homocera: gall on Quercus cerris, underside

gall, underside

Janetia homocera: gall on Quercus cerris, side view

a single gall in side view

gall

About 5 mm large, hard gall in the leaf disk, protruding cone-like at both sides. The upper part is rather low, smooth, with a central nipple. The lower part is much higher, covered by a dense felt. At maturity the lower part drops off. Often several gall is a leaf. Larva solitary, red, pupates in the soil.

hostplants

Fagaceae, narrowly monophagous

Quercus cerris, trojana.

larva

see Skuhravý & Skuhravá (1971a)

references

Braggion (2013a), Buhr (1965a), Csóka (2012a), Gagné (2010a), Hellrigl (2010a), Schremmer (1991a), Simova-Tošić, Skuhravá & Skuhravý (1996a, 2000a, 2004a, 2007a), Simova-Tošić, Skuhravá, Skuhravý & Postolovski (2007a), Skuhravá & Skuhravý (1994a, 1997b, 1999a), Skuhravá, Skuhravý & Dengler (1997a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Massa (2007a), Skuhravá, Skuhravý & Neacsu (1972a), Skuhravý & Skuhravá (1971a), Stefănescu (2009a).

21/01/2017

pub 21.i.2017 · mod 25.vii.2017