Cochliomyia

Whitworth, Terry, 2010, Keys to the genera and species of blow flies (Diptera: Calliphoridae) of the West Indies and description of a new species of Lucilia Robineau-Desvoidy, Zootaxa 2663, pp. 1-35 : 12-13

Key to species of Cochliomyia of the West Indies

1. Genal dilation antero-dorsally with few to many short, black setae ( Fig. 21 ); T5 cupreous, contrasting in color with preceding tergites ( Fig. 22 ); mesonotum with 3 broad black polished vittae alternating with narrower, gray microtomentose vittae ( Fig. 5 ); postgenal setulae white........................................................................................................ 2

- Genal dilation with entirely yellow setae; T5 blue to green, concolorous with preceding tergites; mesonotum with three black polished vittae alternating with about equal width green or blue microtomentose vittae; postgenal setulae yellow........................................................................................................................................................................... 3

2. T5 with pair of median dorsal silvery microtomentose spots ( Fig. 22 ); occiput with few to numerous dark setae in upper part, just below postocular setae; frons of male narrower, 0.06 (0.05–0.065/8) head width, equal to or narrower than the width of first flagellomere; surstylus and cercus long and slender ( Figs. 31, 33 )........................... C . aldrichi

- T5 with uniform dusting of microtomentum; occiput with pale setae only below postocular setae; frons of male broader, 0.083 (0.075–0.09/2) head width, width broader than width of first flagellomere; surstylus digitate, cercus with broad base tapering sharply to point ( Figs. 32, 34 )............................................................................... C . minima

3. Fronto-orbital plate with dark setulae outside row of frontal setae ( Whitworth 2006, fig. 53, right side); T5 without pronounced silvery microtomentum; postgenal setae usually golden yellow; female with dark basicosta; proclinate orbital setae absent; not found in North America since 1966 due to eradication efforts; found in parts of Mexico, Central and South America, possibly in isolated areas in the West Indies............................................ C . hominivorax

- Lower third to half of fronto-orbital plate with pale setulae outside row of frontal setae ( Whitworth 2006, fig. 53, left side); T5 usually with pronounced silvery microtomentum laterally; postgenal setae usually pale yellow; female usually with yellowish basicosta; usually with two pairs of proclinate orbital setae (sometimes only one on one or both sides). Widespread in Neotropical and Nearctic Regions......................................................................... C . macellaria

Figures

FIGURES 21 – 28. Cochliomyia. 21 – 23. C. aldrichi. 21. Black setae on upper genal dilation. 22. T 5 with coppery color and white spots. 23. Left lateral view of phallus. 24. C. minima, left lateral view of phallus. 25. C. aldrichi, ejaculatory sclerite. 26. C. minima, ejaculatory sclerite. 27. C. aldrichi, pre- and postgonites. 28. C. minima, pre- and postgonites.

FIGURES 2 – 7. 2. Stomorhina lunata, venter of costa with setulae to just past humeral crossvein. 3. Cochliomyia macellaria, venter of costa with setulae to junction with subcosta. 4. Chrysomya rufifacies, greater ampulla with stiff, erect setae. 5. Cochliomyia macellaria, vittae on thorax. 6. Hemilucilia spp., apex of wing beyond r-m crossvein tinted brown. 7. Left figure, Hemilucilia spp., posterior margin of hind coxa with setae along entire width. Right figure, Chloroprocta idioidea, posterior margin of hind coxa with setae only on posterolateral corner.

FIGURES 29 – 34. 29. Cochliomyia aldrichi, male abdominal sternites. 30. C. minima, male abdominal sternites. 31 – 32. 31. C. aldrichi, left lateral view of male genitalia (epandrium, surstylus, and cercus). 32. posterior view of male genitalia. 33 – 34. 33. C. minima, left lateral view of male genitalia. 34. posterior view of male genitalia.