Fannia trimaculata Stein

Fannia trimaculata (Stein)

(Figs. 37, 55, 73, 91, 109, 127)

Fannia trimaculata Stein, 1898: 176 (Homalomyia). Male syntypes deposited in the Museum für Naturkunde der Humboldt–Universität (ZMHB), Museum of Comparative Zoology (MCZ), Field Museum of Natural History (FMNH) and National Museum of Natural History (USNM)(Pont & Werner 2006: 15). Type-localities: North America and Jamaica.

Diagnosis. these characters apply only to the male sex. General coloration black; eye bare; frontal vitta black to dark brown, golden-silver pollinose, anterior margin brownish or black; 10–11 fr; fronto-orbital plate greyish pollinose and posterior margin black; parafacial with short setae; parafacial and gena greyish pollinose; scape and pedicel dark brown greyish pollinose; arista dark brown; palpus dark brown, filiform and slender; thorax dark-grey; scutum dark brown to black up to second pair of postsutural dc and grey up to intra-alar area and base of scutellum, sometimes with 2 grey or brown vittae, weak or visible between acr and dc; acr 3:3–4, in unordered series; 3–4 long pprn; 2 short and strong pra, near spal, disposed asymmetrically in some specimens; calypters and wing yellowish; haltere whitish to yellowish; legs dark brown; mid femur with 3 short av on basal third, 2 on mid third, and apical third with a set of short and strong setae decreasing in size towards apex, 1 row of sparse pv, apical third with a set of short strong setae; hind coxa with 2–3 p; hind femur with 1 strong av on apical third, median third with 2 rows of short and straight setae (Fig. 37), posteroventral surface on apical third with weak protuberance and 1 row of pv that increase in length towards the apex, 3–4 setae inserted on protuberance (Fig. 55); hind tibia with 1 median av, 1 row of short a ending in 1 longer pre-apical (Fig. 37), 1 median d and 1 developed pre-apical; hind tarsus on first and second tarsomeres with a strong ventral seta; abdomen trimaculate; sternite 1 bare; sternite 5 as in Fig. 73; terminalia (Figs. 91, 109): epandrium wider than long, with setae of differing lengths; cercal plate fused only apically, with short and strong setae; surstylus straight and slightly pointed apically, with 2 strong pre-apical and setulose setae on inner basal region, with a short latero-ventral projection and with short strong setae; bacilliform process absent; hypandrium and associated structures as in Fig. 127.

Biology. F. trimaculata is associated with forest areas (de Carvalho & Couri 1991) and is found in abundance on the dung of confined birds. For this reason, research on possible F. trimaculata predators, such as histerid and staphilinid beetles that develop in the same substrate (Bruno et al. 1993; Lomônaco & Prado 1994), is needed. Albuquerque (1945) presented data on the biology, morphology and distribution of the species from specimens reared in the laboratory, but the data he presented was for F. pusio (de Carvalho et al. 2003).

Comments. Fannia trimaculata is newly recorded in Colombia. It is close to F. trimaculatoides, but males of both species are distinguished by the hind femur, setulose in the middle of ventral surface in F. trimaculata. Fannia trimaculata is close to F. howardi, but can be easily recognized by the hind femur with one row of 7-8 av on basal third and apical third, bare basally, except for one strong seta on apex (Seago 1954) (these characters apply only to the male sex).

Type material. Not examined.

Material examined. COLOMBIA. Antioquia: 8 males Medellín, U de A, En cadáver Curi, 9:00, 1 Dic. 2000, P. Duque, Fanniidae, Fannia sp., M. Wolff (CEUA), 1 male Medellín, Universidad de Antioquia, Jameo, Cerdo forense, Junio 9 de 1999, A. Uribe Toro, Muscidae 543 (CEUA), 1 male Medellín, Rama–Jama, 1.480 msnm, Fecha 02/25/01, CEUA 13341, M. Castaño (CEUA).

Distribution. Belize, Panama, Puerto Rico, Jamaica, Dominican Republic, Haiti, Santo Domingo, Ecuador, Peru, Venezuela, Brazil, Uruguay, Argentina (de Carvalho et al. 2003). Colombia: department of Antioquia (Andean region, Central Cordillera).