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View Thread :: Identification queries :: Diptera (adults)
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Bolitophila spinigera
#1 Print Post
Posted on 04-12-2019 20:04

Posts: 3559
Joined: 27.11.08

Spieces possible?
Photo from 4 August 2019 Kramfors 62 N, E 17 Ångermanland, Sweden.

Thanks for your help in advance

Kurt Holmqvist
kurt attached the following image:

Edited by kurt on 08-12-2019 20:18
#2 Print Post
Posted on 05-12-2019 11:05

Location: Franconia, Germany
Posts: 257
Joined: 11.11.18

Hi Kurt, based on the pterostigma and the slightly swollen front tarsi I think of female B. occlusa.

Paul Beuk
#3 Print Post
Posted on 05-12-2019 12:09
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Location: Netherlands
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B. occlusa belongs in Cliopisa, with R4 ending in the costa rather than in R1. As fas as I can see but difficult becuase of the dark stigma, it ends in R1 in this specimen. Also against B. (C.) occlusa are the presence of a dark marking over r-m and the fact that the posterior vein of the posterior fork ends in the wing margin, quite distant from the anal vein (rather than on the anal vein before that vein reaches the wing margin. I am not sure of how exactly the veins are running at the base of the posterior fork, but B. (B.) spinigera looks to be a better candidate.
Edited by Paul Beuk on 05-12-2019 13:13

- - - -

Paul Beuk on
#4 Print Post
Posted on 05-12-2019 12:42

Location: Franconia, Germany
Posts: 257
Joined: 11.11.18

Hi Paul, thanks a lot for your comments. I thought I saw swollen tarsi and the stigma and checked the presence of occlusa in Norway (Rindal et al.: On the family Bolitophilidae in Norway)... Sorry Kurt, for the quick shot!

Paul Beuk
#5 Print Post
Posted on 05-12-2019 13:15
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eklans wrote:
I thought I saw swollen tarsi
In spinigera the metatarsi are swollen, too.

- - - -

Paul Beuk on
#6 Print Post
Posted on 08-12-2019 20:19

Posts: 3559
Joined: 27.11.08

Thanks for your help Eklans and Paul
Kurt Holmqvist
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20 February 2020 02:02


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