Rhopalomyia florum (Kieffer, 1890)

Diptera, Cecidomyiidae

on Artemisia

Rhopalomyia florum gall

Artemisia vulgaris, Nieuwendam: gall, between two developing fruits and an abortive one

Rhopalomyia florum larva

opened gall with larvs

Rhopalomyia florum parasitised gall

parasitised gall (contained a dead chalcid wasp)

Rhopalomyia florum gall

Artemisia vulgaris, Nieuwedam; at left a normal fruit, at right a galled one

Rhopalomyia florum gall

emptied and vacated gall

hostplants

Asteraceae, narrowly monophagous

Artemisia maritima, vulgaris.

gall

The flower heads containing a gall cannot be distinguished from normal heads. The only way to find the galls is by random insepection of ripe flower heads. In my expeprience the galls are not at all rare – tens of galls per plant.

synonyms

Diarthronomyia florum.

notes

see also Rh. magnusi, treated by Buhr as a more or less forgotten species.

references

Buhr (1964b), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Redfern & Shirley (2011a), Roskam (2009a), Roskam & Carbonnelle (2015a), Simova-Tošić, Skuhravá & Skuhravý (2000a), Skuhravá & Skuhravý (1999a), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý & Meyer (2014a).

29/07/2015

mod 10.xi.2017