[Syrphidae] Re: Syritta help!

Santos Rojo santos.rojo at ua.es
Mon Jun 4 12:43:25 BST 2012


Well could be Syritta..., but photo are terrible 
for ID... if yes, then most sure will be S. 
pipiens because eusynanthropic habits, relation 
with human faeces etc.
Unfortunately not forensic precise tools as 
accumulated degree-days/hours or 
isomorphen-diagram  are available for this 
species because probably this will be first case 
report with presence of this genus at least in 
Europe ... anybody has more info? until now 
mainly Eristalis tenax and other eristalines have 
appear related with human bodies...

"Firdaus Mohd Salleh et al., (2007). Review of 
forensic Entomology cases from Kuala Lumpur 
Hospital and Hospital Universiti Kebangsaan 
Malasyia, 2002.  J. Trop. Med. Parasitol. 30: 
51-54 "

"Martins et al., (2010). Breeding of Ornidia 
obesa (Diptera: Syrphidae: Eristalinae) on Pig 
Carcasses in Brazil. J. Med. Entomol. 47(4): 
690-694 "

A single case was published involving Episyrphus 
balteatus adults in a forensic? case report ... 
but finally "marmalade fly" was not related with 
the body... (note that photos of copses appear in 
the next link)


However in Perez-Bañón & Marcos-García (2000) a 
complete larval description of pupae from both 
pipiens and flaviventris species is included. 
This could help Paola to identify herself 
specimens (of course if adult emerge will be 
probably more easy...). Pupal period (after 
larval development in decaying cacti) was 8-11 
days (climatic chamber 16-22 ºC, 15:9 
photoperiod). Larvae were sampled in 
Mediterranean "winter" that means a minimum of 
11-12 degrees in January in of the study sites... 




Instituto Universitario CIBIO - Centro Iberoamericano de la Biodiversidad
Dpto de Ciencias Ambientales y Recursos Naturales
Universidad de Alicante. Apdo. 99
E-03080 Alicante, Spain
Phone.: (int + 34) 965 90 34 00 ext. 3281
FAX: (int + 34) 965 90 38 15
e-mail: santos.rojo at ua.es

>Dear all,
>A colleague sent me some pictures of what she 
>thinks is Syritta, and she would like to know 
>more about the specimens.
>Any suggestions for her? Does someone know about 
>the timing for these species to grow up? Any 
>publication about this issue?
>Thanks a lot in advance!
>From: Paola Magni [<mailto:doc.magni at gmail.com>doc.magni at gmail.com]
>Sent: Saturday, June 02, 2012 10:22 AM
>To: Mengual, Joaquin
>Subject: Syritta help!
>Dear Ximo,
>my name is Paola Magni, I'm a forensic 
>entomologist at University of Turin, Italy.
>at present I'm dealing with some cases where 
>some Syritta in stages of larvae and pupae are 
>I'm wondering if you have any information/data 
>concerning the time needed by Syritta to grow up 
>until the third instar and pupa compared with 
>that could be very useful for my work.
>Unfortunately I just have few and bad pics of 
>these samples, but maybe you can recon the 
>species of this Syritta. I'm sending these pics 
>in attachment.
>N.B. in the italian check list we have just
>  Syritta flaviventris Macquart, 1842 (N, S, Si, Sa)
>  Syritta pipiens (Linné, 1758) (N, S, Si, Sa)
>thank you from now!
>Dr. Ximo Mengual
>Head of the Diptera Section - Curator
>Zoologisches Forschungsmuseum Alexander Koenig
>Leibniz Institute for Animal Biodiversity
>Adenauerallee 160
>D-53113  Bonn, Germany
>Phone: 0049 (0)228 9122 292
>web  | 
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