Posted by John Carr on 04-10-2020 14:47
#2
Lothar Schuh wrote:
Hello,
is it "more or less" sufficient to look at the size of calypters:
- both have same size: Anthomyidae
- lower is larger: Musciudae?
Can I get a solid hint?
Regards
Lothar
That is usually true. There are a few Muscidae with small lower calypters (subfamily Azeliinae, some Coenosiinae) and a few Anthomyiidae with large lower calypters, but not as large as
Musca or
Phaonia.
You can also look at the hind tibia. Very few Muscidae have 2 or more posterodorsal bristles, and very few Anthomyiidae have fewer than 2. On the thorax, the very few Anthomyiidae with 4 postsutural dorsocentrals have many more hairs on the thorax than similar Muscidae. Very few Anthomyiidae have hairy eyes.
If there are any
Drymeia with 4 postsutural dorsocentrals they may be confusing.