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Genus and species information.
Neosilba convexa Galeano-Olaya & Canal
Nomenclature
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Tribe: LonchaeinaeGenus: Neosilba
SUMMARY
Diagnosis: Neosilba convexa belongs to the peltae group. According to McAlpine & Steyskal (1982), at least nine very similar species should exist in the group and it could be characterized by the shape of the aedeagus (short; the filament is not longer than section C), the breadth of the aedeagus in ventral view slightly widens at the junction of the filament with section C; shape of the epandrium (narrow in lateral view), the presence of the long setulae in the ventral margin of each surstylus and a fluting in the inner margin of the surstylus. According to our new species, the length of the filament could be slightly longer than the C‑shape. These characters could be used in order to separate similar species in the group. N. peltae differs by the breadth of the aedeagus in ventral view being similar along all its length, and shorter than section C. Apex just reaches the base of the epandrium, the filament is completely spiculated, the posterodorsal border of the epandrium rectangular and 7 setulae of ventral margin of the surstylus. N. concava differs by the junction of the filament and the C of the aedeagus is not clearly wider, filament spiculated just at the apex and base 17 setulae along ¾ apical in the margin of the surstylus, in three groups 7 distally, 4 spaced medial and 5 posterior and the posterodorsal border of the epandrium concave; N. mcalpiniei differs by the apex of the aedeagus being arrow-like shaped; N. parapeltae by the apex of the aedeagus crown-like shaped; N. ilehuense differs by the filament reaching beyond the base of the surstylus.