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Subgenus Physoconops (Physoconops Subgenus Physoconops)
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Physoconops obscuripennis
Photo#652203
Copyright © 2012
Yurika Alexander
Thick-headed Fly -
Physoconops obscuripennis
-
Atco, Camden County, New Jersey, USA
June 4, 2012
Images of this individual:
tag all
Contributed by
Yurika Alexander
on 4 June, 2012 - 6:38pm
Last updated 18 January, 2014 - 3:03am
Moved
Moved from
Physoconops
.
Keys unambiguously to
P. obscuripennis
in Williston's key
here
and is in excellent agreement with his detailed description
here
. Also keys to same species in Camras (1955), though with some ambiguity at couplet 41, i.e. "1st poterior cell hyaline vs. darkened". The 1st posterior cell in the image here is hyaline, which would lead to
P. discalis
, which is a strictly western (and south to Mexico and beyond) species. Following the alternate choice leads (via 43a "front and vertex entirely dark", and 44a "wing pattern diffuse") to
P. obscuripennis
. The excellent agreement here with Williston's description suggests the key of Camras may be in error at its couplet 41 (that is, variation in the degree of subtle infuscation of the discal cell in
obscuripennis
may not always conform to Camras' "1st posterior cell darkened" condition).
The entirely black frons and vertex; and 3rd antennal segment about half the length of the 2nd...together with the wing pattern and overall body coloration...are strong indicators for
P. obscuripennis
.
Also note the very large theca in the 2nd image of the post, indicating a female here.
…
Aaron Schusteff
, 18 January, 2014 - 2:29am
This is Physoconops
Moved from
Physocephala marginata
.
Note the crossvein r-m on the wing at right is
less than
half-way out along the length of the discal cell. Also, the hind femora have uniform thickness, rather than having basal half noticeably thickened. See
here
for more details.
…
Aaron Schusteff
, 26 December, 2013 - 3:36am
Moved
Moved from
Conopinae
.
…
v belov
, 21 September, 2013 - 8:05am
Physocephala marginata
Physocephala marginata
…
Trevor Burt
, 21 September, 2013 - 7:19am