Posted by
LordV on 26-03-2007 19:45
#1
If the beefly here is Bombylius major http://www.diptera.info/forum/viewthread.php?forum_id=5&thread_id=5257
Is this one also ? taken today- fly is smaller (10mm vs 13mm) not so furry, more uniform in colour.
Brian V.

#2
if you are in GB then yes this is
major, a female whereas the other photo is male. size means little with these parasitoides and colour and furryness is often a function of age/ware.
#4
LordV wrote:
Thanks David

Do the adults overwinter ?
Brian V.
no, they overwinter in their host burrow, either as full fed larvae or pupae, if former then pupating in late winter, in the case of major and discolor emerging March April (males usually first) leaving their pupal exuvia sticking out of the soil.