Diptera.info

Posted by ChrisR on 28-10-2007 01:12

Although some genera in the tribe Sarcophagini have orange genitalia not all do - it's just one of many features that key out the different genera. Also, I think the orange genitalia only apply to males - females are usually (always?) black :)

Anyway, looks big - like a Sarcophaga sp. to me, but I'd need the specimen to be sure :)

Edited by ChrisR on 28-10-2007 01:16

Posted by pierred on 28-10-2007 09:11

Chris Raper wrote:
Also, I think the orange genitalia only apply to males - females are usually (always?) black :)

This picture shows that both of them have red genitalia:
http://www.dipter...to_id=1735

Posted by Alvesgaspar on 28-10-2007 16:26

Zeegers wrote:
And it's a male....
Sarcophaga ss. does not have orange genitalia, these are found in other 'genera' like Helicophagella.

Theo

Thank you for the help, it appears I have landed in a difficult subject... How can one distinguish between a male and a female Sarcophagid?

Edited by Alvesgaspar on 28-10-2007 16:27

Posted by Zeegers on 28-10-2007 17:10

IN most calyptrate flies (Sarcophagidae included), the female has a larger gap between the eyes with 2 additional pairs of proclinate setae (thus lacking in the male).
Moreover, if the pulvilli are enlarged (as in the first pic), you have a male in front of you (however, vice versa is NOT true).

There are exceptions.

Theo

Posted by jorgemotalmeida on 28-10-2007 17:39

Just for those who are reading and can be lost with the terms. :)

Calyptrate flies - those flies that have calypter - they belong to the Calyptratae

header=[Calyptratae] body=[Calyptratae is a subsection of Schizophora in the insect order Diptera, commonly referred to as the calyptrate muscoids (or simply calyptrates). It consists of those flies which possess a calypter that covers the halteres, among which are some of the most familiar of all flies, such as the house fly.
Links: Diptera classification (http://www.diptera.info/viewpage.php?page_id=17)<br /><img src='infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

. Calypter is located below the wings and usually with 2 pairs.

The last tarsomere (=distitarsus) usually bears 2 claws (i never saw a fly with 3 claws.. garras in Portuguese) . Sometimes, the last tarsomere can have two pulvilli with an empodium in the middle. The pulvilli above have red colour. It is very clear in first photo at your left (1st and 2nd left legs). The empodium IS NOT visible in your photo. (it is located between the pulvilli). We would need more magnification to see that. ;)

NOTE: Tarsus [the segment more apical of the leg - more near the ground :)] has 5 tarsomeres. The first tarsomere (more basal one - i.e. more near tibia than the ground) is called metatarsus=basitarsus; the last is called distitarsus (from distal).

See here for: proclinate header=[proclinate] body=[bent forward (usually used to indicate curvature of setae)<br /><img src='infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

header=[proclinate] body=[bent forward (usually used to indicate curvature of setae)<br /><img src='infusions//terms/images/no_image.gif' style='vertical-align:middle;' />] delay=[0] fade=[on]

setae
For setae see Overviews section for more information. ;) Specially this one:
http://www.dipter...ad_id=8790

Edited by jorgemotalmeida on 28-10-2007 17:49