Taxon classification Animalia Diptera Bombyliidae

Xenox xylocopae (Marston, 1970) Figure 19

Material examined.

ECA: Sep (1 M).

Known Nearctic records.

Mexico (Chihuahua, Coahuila, Sonora), USA (Arizona, New Mexico, Texas).

Known host.

Xylocopa micheneri micheneri (Hurd) ( Apidae) as reported by Minckley (1989).

Comments .

Xenox xylocopae appears to be restricted to the northeast of Mexico and south of the USA. Three of the other species also have restricted and separate distributions: Xenox delila Loew, 1869 is present in the northwest of Mexico and California; Xenox nigritus (Schaeffer, 1768) occurs from the northeast of Mexico (Veracruz and Tamaulipas without overlap with Xenox xylocopae) to South America; and Xenox tigrinus (De Geer, 1776) is present in the eastern USA and southern Ontario. Only Xenox habrosus (Marston, 1970) has a distribution overlapping with the other four species, being present in all of Mexico and the southwest of the USA.