Cochliomyia aldrichi Del Ponte

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 : 13

Cochliomyia aldrichi Del Ponte

Figs. 21–23, 25, 27 , 29, 31, 32

Cochliomyia aldrichi Del Ponte, 1938: 274 Callitroga aldrichi: Hall, 1948: 123

Cochliomyia aldrichi: Dear, 1985: 137

Diagnosis. This species and C. minima are distinctive, because T5 is coppery and the dorsum of the thorax is metallic black with gray stripes. They also share a few to many black setae on the anterior part of the gena ( Fig. 21 ). Cochliomyia aldrichi has a pair of median dorsal white spots on T5 ( Fig. 22 ) and few to numerous dark setae on the upper occiput just below the postocular area. Males have an average frons width of 0.06 of head width.

Male genitalia. Surstylus long and slender, expanded distally, cercus tapering gradually from a narrow base to a point ( Figs. 31, 32 ). Phallus has a typical epiphallus, a long paraphallus with an articulated joint near anterior end. Posterior end of paraphallus ends in a complex hypophallus and acrophallus ( Fig. 23 ). Distal end of the ejaculatory sclerite broad and fan-like and narrowing gradually to base ( Fig. 25 ). Pregonite triangular with four setae; postgonite digitate with a single fine seta ( Fig. 27 ). Male abdominal sternites uniform, except ST5 expanded and uniquely-shaped ( Fig. 29 ).

Distribution. Specimens from USNM were confirmed from Anguilla, Nassau and San Salvador in Bahamas, Guana Island and several locations in Puerto Rico and Virgin Islands. Dear (1985) listed this species from numerous locations in the West Indies, including Bahamas, Cuba, Puerto Rico, San Salvador ( Bahamas), Virgin Islands, and Cayman Islands.

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 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.