Diagnosis. — This species can be separated from N. pulchellus by the apparent deeply forked forewing MP1 in the latter species. The only other Costa Rican dilarid, N. parkeri also has a shallowly forked MP1, and can only be separated with confidence by studying the male genitalia. In general, N. americanus appears to be a somewhat paler species with slightly narrower wings. However, there is too much variability to these character states to be consistently useful.
Geographical Distribution. — Eastern U.S.A. south to Venezuela (Adams 1970). Within Costa Rica, N. americanus has been collected only with light traps at 3 km SE of Rio Naranjo in GUANACASTE Province.
Nallachius americanus is a species of pleasing lacewing in the family Dilaridae. It is found in the Caribbean Sea, North America, and South America.[1][2][3]
Nallachius americanus is a species of pleasing lacewing in the family Dilaridae. It is found in the Caribbean Sea, North America, and South America.
