. Bulletin - United States National Museum. Science. 372 UNITED STATES NATIONAL MUSEUM BULLETIN 224. Text-Figure 26.—Pattern of distribution of the genus Atomosia Macquart. Genus Atomosia Macquart Figuees 223, 229, 637,1309,1318, 2110, 2121, 2122,2123, 2153, 2156 Atomosia Macquart, Dipteres exotiques, vol. 1, pt. 2, p. 73, 1838. Type of genus: Atomosia incisuralis Macquart, 1838. Designed by Coquillett, 1910, the fourth of 6 species. Cormanste Walker, Insecta Saundersiana, vol. 1, pt. 2, p. 154, 1S51. Type of genus: by monotypy. Cormansis halictides Walker, 1S51, Small, short and robust flies
. Bulletin - United States National Museum. Science. 372 UNITED STATES NATIONAL MUSEUM BULLETIN 224. Text-Figure 26.—Pattern of distribution of the genus Atomosia Macquart. Genus Atomosia Macquart Figuees 223, 229, 637,1309,1318, 2110, 2121, 2122,2123, 2153, 2156 Atomosia Macquart, Dipteres exotiques, vol. 1, pt. 2, p. 73, 1838. Type of genus: Atomosia incisuralis Macquart, 1838. Designed by Coquillett, 1910, the fourth of 6 species. Cormanste Walker, Insecta Saundersiana, vol. 1, pt. 2, p. 154, 1S51. Type of genus: by monotypy. Cormansis halictides Walker, 1S51, Small, short and robust flies of bare aspect and short, scanty, appressed pile. The antenna is elongate and always slender. Several abdominal tergites usually bear lateral bristles and the apex of the abdomen in both sexes is strongly cupped, concealing the genitalia. The coloration is always dark, the legs sometimes pale. It is separated from its near relative, Cerotainia Schiner, by the convergent vertex. Length 5 to 12 mm. Head, lateral aspect: The head is short, the face very short, except on the lower fourth, where it is slightly elevated and also rendered more conspicuous because of the recession of the eye. Height of face reduced on account of the long, oblique, convex sube- pistomal area. The occiput gradually widens from the upper fourth to the bottom of the eye because of the gradual recession of the eye; occipital pile com- posed of fine, scattered hairs ventrally, weak bristles above the middle of the head and with a small cluster of moderately stout bristles on each side behind the postvertex. Proboscis short, robust, tapered from the base and the base sometimes strongly swollen. The proboscis does not extend beyond the face and in some species may not reach to the epistoma. Palpus minute, especially the first segment; the second segment is slender and cylindrical, with a few apical, ventral, and lateral bristles. Antenna attached slightly above the middle of the head, elongate, longer than t
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