NO. I BLACK FLIES OF GUATEMALA — DALMAT 249 



Jose H. Resales and Daniel Luch ; mounted on 4 slides, containing the 

 wings, legs, genitalia, and head. Female (Acat. 139-1) ; reared from 

 pupa collected in the same stream as the male on March 12, 1948 ; 

 collectors, Jose H. Rosales and Daniel Luch. Both plesiotypes are in 

 the collection of the author. 



SIMULIUM (HEARLEA) CAROLINAE De Leon 



Siniiilium carolinae De Leon, BoI. Sanit. Guatemala, vol. 52, pp. 73-75, figs. 



12-13, 1944 (original description, pupal respiratory apparatus, and terminal 



plate of larva). 

 Simulium (Hearlea) carolinae DeLeon, Vargas, Martinez, and Diaz, Rev. 



Inst. Salubr. Enferm. Trop., vol. 7, No. 3, pp. 122-124 and 182, figs. 29-34 



and 137, 1946 (c?, ?, pupa, and larva). 



Male (pi. 26, figs. 100-102). — 3.2 mm. long. 



Head: Eyes dark reddish brown. Antenna 540 fx long, ii-seg- 

 mented, slightly tapering; segment 3>i+2, 3 = 4+5, 3>ii; black. 

 Palpi black. Clypeus black, white-pruinose, irregularly covered with 

 long, strong, black hairs. 



Thorax : Mesonotum velvety black, with band of white pruinosity 

 around the periphery, the band interrupted only at the middle of the 

 anterior margin where the ends of both arms broaden ; long, narrow, 

 yellow scalelike hairs over entire mesonotum, more numerous along 

 the periphery, never in packets ; longer in prescutellar region ; long 

 black hairs on prescutellar region. Humeral angles white-pruinose, 

 covered with yellow scalelike hairs. Scutellum black, white-pruinose, 

 with numerous yellow scalelike hairs and some long black hairs. Post- 

 notum velvety black, white-pruinose, devoid of hairs. Pleura brown, 

 with white pruinosity. Stem of halter black on its base and dark 

 brown near apex, the knob yellow and cup-shaped. Wings, 3.2 mm. 

 long and 1.4 mm. wide; relation of length of body to wing, 1:1; Sc 

 pilose along its basal fifth ; Ri pilose and spiny along the distal half ; 

 R2+3 pilose except for short basal region ; Cug arcuate ; discal cell 

 absent. 



Legs: Leg i, length, 3.4 mm.; coxa and trochanter dark brown; 

 femur black ; tibia black, its central region dark brown ; tarsus black. 

 Leg 2, length, 3.0 mm. ; coxa, trochanter, and femur black ; tibia black 

 except for its basal fourth which is brown ; basal half of basitarsus 

 brown, apical half black ; tarsal segments 2-5 black. Leg 3, length, 

 3.5 mm. ; coxa, trochanter, and femur black ; tibia black with small 

 basal brown ring; basal third of basitarsus and of second segment 

 brown, the remainder of these segments, as well as all of segments 3-5, 

 black; relation of basitarsus to second tarsal segment, 4.0: i ; calcipala 



