Contributions to Zoology, 84 (4) – 2015Zorica Nedeljković; Jelena Ačanski; Mihajla Đan; Dragana Obreht-Vidaković; Antonio Ricarte; Ante Vujić: An integrated approach to delimiting species borders in the genus Chrysotoxum Meigen, 1803 (Diptera: Syrphidae), with description of two new species
Appendix

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Chrysotoxum festivum, C. orthostylum sp. nov. (femora wholly yellow), and C. tomentosum


Females – change step 36

 

 

36 (37).

Femora of all legs yellow.

a (b).

Abdomen slender, 2× longer than wide; posterior corners of terga 3 and 4 developed into thorn-like processes (Fig. 12B)

C. orthostylum sp. nov.

b (a).

Abdomen more oval, 1.6-1.7× longer than wide; posterior corners of terga 3 and 4 not developed into thorn-like processes, or very inconspicuously developed.

c (d).

Pollinose maculae on frons triangular

C. tomentosum

d (c).

Pollinose maculae on frons rectangular

C. festivum