Thread subject: Diptera.info :: ornage fly in rice for ID

Posted by chitrashanker on 28-10-2013 05:58
#1
HI
I observed a number of these adults in rice fields at Kalimpong(Darjeeling) in INdia. The area is a hilly region at an elevation of 4000 ft. The crop is rainfed upland with no stagnating water. I have not observed this fly in other regions. Can somebody identify the species and give me some indication as to what could be its role in rice fields - pest or saprophagous?
Edited by chitrashanker on 28-10-2013 06:01

Posted by Dmitry Gavryushin on 28-10-2013 06:25
#2
Derbidae (Hemiptera, Auchenorrhyncha)

Posted by chitrashanker on 28-10-2013 06:26
#3
Another image of the same

Posted by Dmitry Gavryushin on 28-10-2013 09:10
#4
In Distant, 1906 it runs to Diostrombus carnosa (Westwood, 1851) (as Drona carnosa, synonymy according to Muir, 1913)

Posted by chitrashanker on 28-10-2013 09:53
#5
Thank you Dmitry for the ID. Diostrombus carnosa seems to have a blackish abdomen while this is totally orange in colour. At least now I know what keys I have to refer Smile. Thanks a ton

Posted by Dmitry Gavryushin on 28-10-2013 12:15
#6
At least the type species, Diostrombus politus Uhler, 1896, is recorded on rice (Lee & Kwon, 1977; Rahman et al., 2012)

Posted by Dmitry Gavryushin on 28-10-2013 12:27
#7
Yes politus looks very similar (from Rahman et al., 2012); I believe it's not yet recorded from India though.

Posted by chitrashanker on 01-05-2014 07:34
#8
Really... what key characteristics I should look for to differentiate it from carnosa