Forum Entomologi Italiani

mesomela = mesomelas
For the bibliography and the keys of determination, see : viewtopic.php?f=11&t=25189
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Ciao,
n° 4513 (♀) & n° 4514 (♂) at an altitude of about 550 m. in Cne : Anost (Dépt. Saône-et-Loire - France) - 04.06.2008

These female and male was copulating. .

These capture are Tenthredo s.l. , it belongs to the sub-genera Olivacedo or Eurogaster.
The abdomen is not green or greenish, except transversal bands (if present) yellow-greenish, it thus acts of Eurogaster.

- The mesopleura are yellow-greenish with a longitudinal black band and the metapleura are not mainly black,
.. thus it is E. mesomela or E. mioceras.
.. (The mesopleura & metapleura, of E. obsoleta, are mainly black).
- The apex of labrum is rounded (if not : E. mioceras)
.. thus it is E. mesomela
.... The abdomen of ♀ is dorsally entirely black , thus: var. atramentaria Enslin 1912

Finally :
Tenthredo (Eurogaster) mesomela Linnaeus 1758 (♂) & (♀ var. atramentaria Enslin 1912) Che vivono in Italia

Saluti.

D & JP Balmer