Neosilba piracea Galeano-Olaya & Canal

Diagnosis: N. piracea (together N. batesi, N. bella,
N. bifida, N. certa, N. delvechioi, N. distospinosa,
N. glaberrima, N. inesperata, N. oaxacana, and
N. pradoi) belongs to a group of species with epandrium
two or less times as long as wide and has a
strong slimming of the aedeagus at the base of the
filament, stronger carina at the junction of C and filament
(i.e., Section C of the aedeagus strongly wider
than the filament). (Fig. 15C) N. piracea could be
recognized by the epandrium 2 times as long as wide
(Fig. 15B), surstylus with 5 to 7 prensisetae at each
side (Fig. 15D), section C with an apical dorsal carina
and with contiguous spiculae (Fig. 15C). N. distospinosa
differs by having spiculae on the ventro-distal
area of the filament. N. batesi, N. bifida, N. delvechioi,
N. glaberrima, N. inesperata and N. pseudobifida
by the spine-like lobe or two projected lobes arising
on convex surface of the C‑shape. N. certa and
N. bella differ by aedeagus with a gradual slimming
(cone-like) at the base of the filament, low medial carina
in the junction C‑filament of the aedeagus and 7
(N. certa) or 10 (N. bifida) prensisetae located parallel to the posterior margin at each side of the surstylus;
N. certa differs by a paramere shoulder-like bump
(Figs. 13A, D) and triangular-shape in N. bella.
N. oaxacana differs by paramere slender tongue-like
and the filament sinuous at the junction with the C
in N. oaxacana (Fig. 14D). N. pradoi differs by the
paramere lobose, 7 prensisetae, and by the junction
of the filament and C‑shape of the aedeagus without
any carina.