Fannia obscurinervis (Stein)

Grisales, Diana, Wolff, Marta & De, Claudio J. B., 2012, Neotropical Fanniidae (Insecta, Diptera): new species of Fannia from Colombia, Zootaxa 3591, pp. 1-46 : 33

Fannia obscurinervis (Stein)

Fannia obscurinervis Stein, 1900: 207 (Homalomyia) . Syntype male/female in Hungarian Natural History Museum (HNHM) destroyed ( Pont & Werner 2006: 12). Type-locality: Bolivia, Songo.

Diagnosis. general coloration black; 11–20 fr; antenna with postpedicel lighter in colour than scape and pedicel; palpus black; 1 pra; 2 developed pre-scutellar setae; wing from hyaline to brown with upper margin and transverse veins dark brown; haltere black with base paler; calypters yellow; fore femur with 3 rows of long and strong a; fore tibia with 1 developed pre-apical d; mid femur with 1 row of long a, mainly on ventral margin; mid tibia with 1 median d, 1 pre-apical d and 3 more developed apical d, 1 sub-median p and 1 developed pre-apical p; hind coxa on posterior margin setulose; hind femur on posterior surface without differentiated setae; terminalia: epandrium with short and dense setae at base, cercal plate developed and with long apical setae, surstylus fused to cercal plate, bacilliform process hook-shaped ( Stein 1911; Albuquerque 1946; Wendt & de Carvalho 2009).

Biology. Fannia obscurinervis is a synanthropic species ( Oliveira 1986; de Carvalho et al. 2002), collected in rural areas ( Almeida et al.1985), and also in forests (de Carvalho & Couri 1991). It is associated with carrion ( Linhares 1981; Moura et al. 1997), decomposing onions, chicken liver, sardines ( Almeida et al. 1985), chicken guts, human faeces ( Linhares 1981), decomposing shrimp and banana (Wendt & de Carvalho 2009).

Comments. F. obscurinervis was redescribed by Albuquerque (1946). He also described the female, and illustrated the legs and terminalia of male and female. Wendt and de Carvalho (2009) recorded the species in southern Brazil, re-described it and made new drawings for it. Fannia obscurinervis belongs to the group obscurinervis ( Albuquerque et al. 1981) , however, the monophyly of the group has not been corroborated ( Domínguez & Roig-Juñent 2008).

References for Colombia: Stein (1904, 1918).

Distribution. Mexico, Venezuela, Guyana, Colombia, Peru, Bolivia, Brazil, Paraguay (de Carvalho et al. 2003)