Forum Entomologi Italiani

Biblio :
Benson : RES - Handbooks ... Symphyta ... Vol. VI 2(b) - 1952
For the other bibliographical references and the keys of determination, see : viewtopic.php?f=11&t=25189
---
Ciao,

# 2338 ♂ captured at an altitude of about 885 m. in Cne : Cormaranche-en-Bugey (Dépt. Ain - France) - 12.07.1989
# 3218 ♀ captured at an altitude of 914 m. in Cne : Cormaranche-en-Bugey (Dépt. Ain - France) - 13.06.1998

These captures are Tenthredo s.l..
- The abdomen is black & red and there is a white spot on each side of 1st tergite (see the photos)
- The antennae are black & white.
It thus acts of sub-genus Tenthredella.
- The tegulae are black.
- The stigma of forewings are bicolorous : piceous or brown with his base white or yellow.
- For the ♂ :

- The median tergites have their median part yellowish-white.

According to Benson - 1952 p.123 it is specific criterion , but if the abdomen is very obscured, it seems that there are cases where it difficult to observe the enlightenment (what poses problems of identification)
- The white spot on the metapleurae is of variable size, and is not always present (For the ♀, I do not have enough captures to say it)

Finally :
Tenthredo (Tenthredella) livida ♂ & ♀ Che vivono in Italia

Saluti.

D & JP Balmer