OCR Text |
Show 1893.] ME. E. E. AUSTEN ON NEW DIPTEEOUS INSECTS. 133 Neotropical Region. Ocyptamus iris, p. 133 , Baccha sagittifera, p. 144 „ signifera, p. 145 „ levissima, p. 146 „ incompta, p. 147 „ pumila, p. 148 ,, silacea, p. 149 ,, cultrata, p. 151 ,, flavens, p. 153 „ gilva, p. 154 „ crocata, p. 155 „ crocea, p. 157 „ fervida, p. 158 Salpingogaster virgata, p. 159 ,, minor, p. 161 BACCHINI, Williston. Synopsis N . Amer. Syrphidae, Bull. 31, U.S. Nat. Mus. p. xv. OCYPTAMUS, Macq. O C Y P T A M U S IEIS, sp. n. (Plate IV. fig. 1, $ •) 2 . Length 1\ m m. Face and cheeks pale yellow ; face with a sharply defined metallic bronze median stripe, reaching to the oral margin ; vertex bluish purple, front metallic greenish black, pollinose on the sides and in the middle; pile black. Antenniferous projection yellow in front, below. Antennas orange-yellow, brown above ; third joint oval. - Thorax dull purplish black on the dorsum, steely blue on the sides and pleura?; scutellum metallic, bluish in front, bronze-green behind. Abdomen metallic iridescent, with dull velvety black markings ; first segment magenta, brilliant steel-blue on the sides ; second segment magenta in front, merging into purplish golden behind, with a reniform velvety black transverse patch in the middle, not reaching to the sides; lateral margin of the segment blue; third segment a mixture of magenta and bronze, with a quadrate velvety spot on each side in the middle; fourth segment somewhat darker, golden bronze in front, greenish in the midde, magenta on the posterior angles, with a quadrate velvety spot on each side in the middle, more widely separated one from the other than the previous pair; fifth segment prune-purple, bluish on the anterior angles : the sides of the abdomen are fringed with short pale hairs, the posterior angles of the fifth segment with black hairs, which project backwards. Legs yellow; posterior tibise brownish on the inner side; the last four joints of the tarsi brownish. Wings hyaline, with a conspicuous brown blotch at the tip, above the third vein; subcostal cell pale yellowish brown ; third longitudinal vein straight: alulce. rudimentary. Cinchona, Jamaica; June: one specimen, collected and presented by W . Fawcett, Esq. This species is allied to Ocyptamus (Baccha) cceruleus, Will. Jamaica. II Brazil. » )> >* j? JJ JJ »> II n >* !) |