Ocyptamus fascipennis, Macquart, 1834

Mengual, Ximo, Miranda, Gil Felipe G. & Thompson, F. Christian, 2018, Unraveling Ocyptamus and the Baccha legacy (Diptera: Syrphidae): redefinition of groups and new species descriptions, Zootaxa 4461 (1), pp. 1-44 : 10-11

Ocyptamus fascipennis species group

Figs 86, 88 .

Diagnosis. Dorsal occiput with one row of pile. Wings with median dark triangular marking, and costal cell partly hyaline. Alula mostly bare. Abdomen elongated and narrow. Abdominal terga with basolateral quadrangular or triangular markings.

Biology. Larvae of O. lemur ( Osten Sacken, 1877) and O. fascipennis ( Wiedemann, 1830) have been reported feeding on mealybugs ( Hemiptera : Pseudococcidae ) ( Rojo et al. 2003).

Comments. Strictly Nearctic. Similar to Ocyptamus sensu stricto, but with narrower abdomens, with medial ‘swelling’ on the second abdominal segment, and typical wing marking. Distinguished as well by the larval prey, which are exclusively mealybugs ( Hemiptera : Pseudococcidae ). Although already suggested in Mengual et al. (2012) and Miranda et al. (2016) based on molecular characters, this is the first time this group is formally defined.

Species list (2): O. fascipennis ( Wiedemann, 1830) , O. lemur ( Osten Sacken, 1877) .

Figures

FIGURES 85–91. 85: Ocyptamus parvicornis (Loew) [male, CNC_Diptera237922], habitus, dorsal view. 86: Ocyptamus fascipennis (Wiedemann) [female, USNM], habitus, dorsal view. 87: Ocyptamus melanorrhinus (Philippi), female, habitus, dorsal view, by Steve Marshall. 88: Ocyptamus fascipennis [female, USNM], habitus, lateral view. 89: Pelecinobaccha adspersa (Fabricius) [female, ZFMK-DIP-00028704], habitus, dorsal view. Note: a blurry pinhead covers part of the scutum; check couplet 30. 90: Pelecinobaccha brevipennis (Schiner) [male, MPEG-DIP12170496], habitus, dorsal view. 91: Pelecinobaccha cubensis (Macquart) [male, USNMENT 01288157] habitus, dorsal view. Scale = 2 mm.