taxonID	type	description	language	source
03E37C1E134D977949F650587052FAEB.taxon	diagnosis	Diagnosis. Head occupied almost entirely by the eyes (Fig. 27). Eyes bare, holoptic below antennae (Fig. 27). Antennae on the upper part of the head, apparently composed of only two segments; scape and pedicel short and rounded, flagellum basally globose and thinned apically (Fig. 27). Mouthparts very small or absent; mouth not covered by a membrane (Fig. 28). Wing venation reduced, some veins difficult to determine homology.	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134D977849F656AD74E9FF1F.taxon	diagnosis	Diagnosis. Eyes black and pilose, holoptic bellow antennae. Antennae inserted on the upper part of the head; flagellum often flattened laterally, longer than the head. Mouthparts shorter than the antennae. Wing hyaline, with many or few microtrichia in the membrane; vein R 4 absent (Fig. 16).	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134D977849F656AD74E9FF1F.taxon	discussion	Comments. In the description of the genus, Walker (1852) only described the venation of the wing and no other characters. Exetasis has been considered a synonym of Ocnaea Erichson by some authors, but Schlinger (1968 a) says that these two genera are similar but may be separated by the distribution of the microtrichia on the wing membrane and the absence of the vein R 4 in Exetasis. A species revision for both genera is probably necessary for better understanding of the units.	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134C977849F6520575A0FC3E.taxon	diagnosis	Diagnosis. Eyes holoptic above the antennae and widely separated below. Scape and pedicel short, the latter cylindrical; flagellum longer than the scape and pedicel combined, more or less laterally compressed (Fig. 13). Proboscis very long, often extending past the end of abdomen, arising from the middle of the head, just below the antenna (Fig. 13). Veins R 2 + 3, R 4 and R 5 parallel in Neotropical species (Fig. 15).	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134C977849F6520575A0FC3E.taxon	discussion	Comments. The genus was poorly described originally by Wiedemann (1824). Wiedemann (1830) described Panops flavitarsis and Panops ocelliger, which are today included in Lasia. Yet, Panops is Australian while Lasia is restricted to the New World. Lasia is easily distinguished from Panops by the insertion of the antenna and the pilosity of the eyes. In Panops the antennae are inserted close to the vertex, while in Lasia the antennae are placed in the middle of the head (Fig. 11). In Panops the eyes are bare, while in Lasia the eyes are conspicuously pilose (Fig. 11).	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134C977849F6576571DDFA24.taxon	diagnosis	Diagnosis. Eyes pilose and holoptic below antenna (Fig. 22). Antenna at the vertex, almost erect (Fig. 14, 19, 22); scape and pedicel short, flagellum usually longer than head (Fig. 19). Proboscis much shorter than antennae (Fig. 14). Wing hyaline, with or without microtrichia; venation varies in different species, but vein R 4 is always present (Fig. 17, 21). In the female, the wing extends a little beyond the tip of abdomen.	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134C977849F655127450F835.taxon	diagnosis	Diagnosis. Head almost entirely occupied by eyes; eyes bare (Fig. 29). Antenna at the lower part of head, near mouthparts (Fig. 29). Mouth obstructed by a membrane (Fig. 30). The wing is shorter in males than in females and in which wing extends past the abdomen. Wing venation reduced, most veins incomplete, varying among the species.	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134F977B49F653BC7197FCFF.taxon	diagnosis	Diagnosis. Eyes black, with short pilosity, holoptic above antennae (Fig. 1). Antenna very small, inserted just above proboscis (Fig. 6, 8). Proboscis long, usually as long as the body and inserted at the middle of the head (Fig. 6, 8). Wing venation is quite reduced and varies among species; some veins are lacking or incomplete. Postpronotal lobes strongly developed, fused dorsally (Fig. 1). Body with humpbacked appearance (Fig. 6, 8). Postscutelum underdeveloped, not visible below the scutelum (Fig. 7).	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134F977B49F650B971C6F9CB.taxon	diagnosis	Diagnosis. Head extremely small compared to thorax. Eyes pilose, widely separated above and below antenna, except in P. capitella. Ocellar tubercle raised (Fig. 24, 25). Scapes totally (Fig. 25) or only basally fused (Fig. 24); pedicel shorter than the scapes (Fig. 24, 25); flagellum longer than the head. Humeral crossvein absent; wing venation variable (Fig. 26). Sexual dimorphism conspicuous in length and insertion of antennae and in wing length. Scapes attached to ventral surface of antennal tubercle in the female and to its anterior surface in the male. Also, antenna inserts at mid-eye or below in the female and well above the mideye in the male. Wing extends past abdomen in the female, while in male is approximately even with abdomen tip.	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134F977A49F6554D7767FE8C.taxon	diagnosis	Diagnosis. Head extremely small compared to the thorax, almost completely occupied by the eyes. Eyes black, with dense pilosity, completely holoptic (Fig. 18). Antenna very small, inserted on the lower part of the head, just above proboscis; scape cylindrical, pedicel rounded and flagellum varying in shape, with one or more apical seta and shorter than the other two joints (Fig. 18). Proboscis short, in the lower part of the head (Fig. 18). Wing hyaline; vein r-m absent; veins R 1, R 2 + 3 and R 4 + 5 simple, without bifurcation, posterior cubital cell closed (Fig. 20). Wing with a spur in the intersection between costal and subcostal veins in the male (Fig. 20).	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
03E37C1E134E977A49F6528D74E5FC4C.taxon	diagnosis	Diagnosis. Eyes holoptic above and below antennae, with sparse pilosity. Antennae short, inserted in the middle of the head; flagellum swollen basally and ending in a thin apical style (Fig. 3). Mouthparts small, indistinct, at the lower part of the head (Fig. 3). Postpronotal lobes strongly developed, fused dorsally, but together for shorter distance than in Philopota. Postscutelum well developed, easily visible under scutelum (Fig. 4). Tergites of abdominal segments II-IV with one pair of dorsolateral bumps each (Fig. 5).	en	Gillung, Jéssica Paula, Carvalho, Claudio José Barros De (2009): Acroceridae (Diptera): a pictorial key and diagnosis of the Brazilian genera. Zootaxa 2175: 29-41, DOI: 10.5281/zenodo.189330
