Eosalpingogaster nepenthe (Hull)  

Eosalpingogaster and Salpingogaster are readily distinguished from all other syrphine groups by the presence of distinct black spinose bristles on the metafemur combined with the petiolate abdomen and sinuate vein R4+5. Both genera have petiolate abdomens, but Salpingogaster is distinguished from Eosalpingogaster by the much more greatly sinuate vein R4+5; other syrphines with sinuate vein R4+5 have oval abdomens. Eosalpingogaster has 1st tergum not produced into a spur, vein R4+5 only slightly sinuate and occipital cilia in 3–4 rows dorsally. In contrast, Salpingogaster has 1st tergum produced laterally into a strong spur and occipital cilia reduced to a single row dorsally.

E. nepenthe is a very light species with pleuron, legs and 2nd abdominal tergum brownish red instead of black, as the rest of species. It has 3rd tegum also distinct with yellow fascia on basal 1/3 extending apically on lateral margins, and wing veins bordered with brown except apically.