Delia

Michelsen, Verner, 2007, Two new European species of Delia Robineau-Desvoidy (Diptera: Anthomyiidae) with a bipartite male sternite III, Zootaxa 1469, pp. 51-57 : 53

Key to Delia males with bipartite sternite III

Four species within the Delia cardui species group are presently known to have a bipartite male sternite III. The species can be identified in the male sex by the following key.

1 Sternites III and IV both much wider than sternite V ( Figs. 4–5 ) ............................................................ 2

- Only sternite III wider than sternite V ......................................................................... D. polaris Griffiths

2(1) Sternite III with short setae only ( Fig. 5 ).................................................................................................. 3

- Sternite III with several long setae reaching beyond sternite V ( Fig. 4 ) .................................................... ................................................................................................................................ D. rimiventris sp. nov.

3(2) Tergite III on ventro-flexed lateral hind margins with some very long setae reaching beyond tip of abdo- men .................................................................................................................................. D. bipartita Suwa

- Tergite III without long setae on lateral hind margins ......................................... D. bipartitoides sp. nov.

Figures

FIGURES 4 – 5. Delia spp., male abdominal venter. 4. D. rimiventris sp. nov., sternites I – V. 5. D. bipartitoides sp. nov., sternites II – V. Same scale.