A NEW NEOTROPICAL CHRYSOPS 
(DIPTERA, TABANIDAE)! 
By L. L. Pechuman 
Lockport, New York 
The writer has realized for some time that the Chrysops 
urugitayensis discussed by Krober (1926) was not the spe- 
cies described by Lutz under that name. However, he did 
not wish to add to the already overburdened synonomy of 
Neotropical Chrysops and as long as the identity of two of 
Brethes’ species was unknown, there was danger of this. 
Dr. Walter H. Hack of the Institute de Medicina Regional, 
Resistencia, Argentina, has kindly furnished the writer 
with descriptions of the Brethes species and both of them 
seem to be distinct from the species described below. 
Chrysops patricia n. sp. 
Holotype female. Length 8 mm. 
Head: First two antennal segments yellow-brown with 
black hairs; third antennal segment yellow-brown at base, 
fiagellum black; third antennal segment subequal in length 
to total length of the first two segments. Frons yellow-gray 
pollinose with pale hairs; dark brown pollinose in ocellar 
area with dark hair. Frontal callus large, brown, margined 
above with black. Frontoclypeus shining dark yellow with 
a narrow yellow-gray pollinose stripe extending from be- 
neath the antennae about half the length of the fronto- 
clypeus. Cheeks densely grayish-yellow pollinose with a de- 
nuded area below on each side which is mottled yellow and 
black. Palpi yellow-brown, paler on inner surfaces. Pro- 
boscis black. Thorax : Dorsum dark brown with two narrow 
pale stripes and a broader stripe on each side above the 
wing base. Scutellum reddish brown with a faint dark 
horizontal stripe near base. Pleura brown with the usual 
yellowish pollinose areas. Halteres brown. Legs slender, 
mostly dark brown with a reddish tinge which is especially 
evident on the fore coxae and middle tibiae; middle and 
' Pul)lished with a grant from the Museum of Coiujiarat i\'e Z .'oh'gy at 
Hurvaitl ('o!!ege. 
115 
