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Diptera.info :: Family forums :: Syrphidae
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Scaeva ID from Tenerife
Gerrit Oehm
#1 Print Post
Posted on 05-04-2020 18:46
Member

Location: Germany
Posts: 179
Joined: 26.11.11

I can not decide between S. selenitica and S. dignota; In Van Veen the differentiation for the females is following:
S. dignota: Frons rather concave, britles at the bases of the antennae white, spots normally reaching the lateral margin of the tergites
S. selenitica: Frons more convex, bristles at the base of the antennae black and numerous, spots do not reach lateral margin of the tergites
Both occur in North Africa, the fact that the spots do not go over the margin made me think that it was S. selenitica - but in the book it says "normally", so lets keep that aside - there seem to be some hairs underneath the antenna, but probably not the bristles asked for and the frons is not too big, so it could be S. dignota.
Gerrit Oehm attached the following image:


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25 April 2024 20:53
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