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ART. 10 TROPICAL AMERICAN DIPTERA — VAN DUZEE 47 



Described from three males and three females, taken by J. M, 

 Aldrieh, May 25, 192C, at Tamau, Alta Vera Paz, Guatemala. 



Type.— Male, Cat. No. 4105G, U.S.N.M. 



This is closely related to fuslformis Becker, described from Peru.^ 

 It differs from that species in having the fore tibiae broader and not 

 narrowed at base a^ in that species; fore tarsi whiter; third an- 

 tennal joint longer and the face golden yellow. Paraclius aldrichi, 

 new species, is even more like fvsifo7'7)us, as the fore tibiae are formed 

 just as in that species, but differs from it in having the face golden 

 3^ellow and in having the hypopygium and its lamellae wholly black, 

 except the petioles of the lamellae which are yellow. It differs from 

 latitibia in having the fore tibiae narrowed at base (about a3 in 

 fig. 57) and in the hypopygium and their lamellae being black. 



PARACLIUS FUSIFORMIS Becker 



Paraclius fuslformis Becker, Abh. Zool.-Bot. Ges. Wien, vol. 13, 1921, p. 49. 



Third antennal joint nearly round in outline, not longer than 

 wide; the lamellae of the hypoygium (fig. 56) are fringed with pale 

 hairs and have black bristles at base; the face is silvery white when 

 viewed from above, velvety brown when seen from in front ; the fore 

 tibiae (fig. 57) are 65 long to 16 wide at the widest part, the basal 

 part for a short distance is of nearly the usual form, the upper sur- 

 face glabrous and silvery white, the lower surface does not have the 

 glabrous space found in latitihia described above; the orbital cilia 

 are wholly black, as are also the calypters and their cilia; the hind 

 tarsi have a large bristle below near the base of first joint, but it is 

 not erect; joints of fore tarsi as 34—14—11-10-7; those of middle ones 

 as 59-25-15-9-8; joints of posterior ones as 49-45-27-15-11; hypo- 

 pygium largely yellow, black at base, its lamellae pale yellow ; wings 

 about like those of latitibia, and like those figured by Becker in his 

 description (p. 50, fig. 4). 



The above description and the drawings were made from two males 

 taken by Nathan Banks July 15 and 18, 1924, at Barro Colorado 

 Island, Panama Canal Zone. 



PARACLIUS ALBIMANUS, new species 



Male. — Length, 2.6 mm. Face silvery white, rather wide, a little 

 narrower below; front blue-green; antennae yellow, third joint mostly 

 brown, not longer than wide, rounded at tip; arista with long pu- 

 bescence, almost plumose; lateral and inferior orbital cilia white. 



Thorax green with brown pollen, which is visible when viewed 

 from in front. Abdomen green with bronze reflections and spots of 



* American Dolicbopodidae, 1921, p. 40. 



