A. dimorphicus Peck, 1972: 52,

1978: 245; Peck & Cook, 2014: 43.

Holotype male in MCZC (nº 32002).

Type locality: Windsor Great Cave, 10 mi S Falmouth, Windsor, Trelawney Parish, Jamaica.

Distribution: Jamaica: Clarendon, Manchester, Portland, St. Andrew, St. Ann, St. Catherine, St. Elizabeth, St. Mary, St. Thomas, and Trelawny Parishes. Biology: On bat guano in caves and widespread in forests; with dimorphic wings (short wings are more frequent in cave and higher elevation forest populations).