Copestylum imitans, (CURRAN, 1926)

Rotheray, Graham E., Marcos-García, Maria-Angeles, Hancock, Geoff, Pérez-Bañón, Celeste & Maier, Chris T., 2009, Neotropical Copestylum (Diptera, Syrphidae) breeding in Agavaceae and Cactaceae including seven new species, Zoological Journal of the Linnean Society 156 (4), pp. 697-749 : 703

COPESTYLUM IMITANS (CURRAN, 1926)

Puparium: Anterior fold without extra large spicules. Anterior spiracles with three openings. Spicules only between longitudinal folds on the dorsum of the prothorax reaching to middle sensilla i.e. about halfway along folds. Abdominal vestiture of short, upright setae. Anal lobe with spicules. Posterior breathing tube orange, not tapering. AP smooth, mostly shiny and as long as TR is wide. Pupal spiracles dark orange, matt, and with three encircling rings of openings in upper third. Pupal spiracles about 1.5¥ as wide apart as a pupal spiracle is long.

Taxonomic notes: Copestylum imitans is recognizable by the dark orange pupal spiracles, nontapering posterior breathing tube and numerous spicules between the longitudinal folds of the prothorax. Copestylum ornatum has similarly dark pupal spiracles but the posterior breathing tube tapers in that species.

Material examined (INBio): 2 ♂, 1 ♀, three puparia COSTA RICA, Alajuela, Upala, Dos Rios, Estación San Gerado , 600 m, 13.ix.2000, ex columnar cactus ( Cactaceae ) D. Briceno ; 4 ♀, four puparia COSTA RICA Guanacaste, Santa Rosa , 19.i.2005, ex Opuntia M. Zumbado .