Reservation

The identification of these larvae has not be confirmed by breeding; they therefore can just as well be A. nigrella!

15321_lv

Elytrigia repens, Nieuwendam

15321_kop15321_kont

‘head’ and rear end

15321_asp15321_pspd

front and rear spiraclum, dorsal

15321_mand15321_pspl

mandible and rear spiraculum, lateral

15321_mouth

mouth field


16287_01

? Dactylis glomerata, Diemen

As the pictures show, the larva has behind the mandibles a finely spinulose field. This places the species in the Agromyza ambigua species group, which includes among others A. ambigua, mobilis, nigrella, nigrociliata and rondensis, and which is placed by Griffiths (1963a) opposite to the nigripes group, with A. albipennis, hendeli, nigripes and phragmitidis.

Venturi (1936a) presents a beautifully illustrated description of the larva, but Spencer (1973b) expresses doubt about the identification.

5.xi.2007

mod 10.viii.2017