1 74 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



HELIOTHRIPS FASCIATUS Pergande. 

 Heliothripsfaxcidta Pkkgande, Ins. Life, VII, No. 5, 1895, pp. 391-392. 



J^emal'.^heugth 1 imii.; width of mcsothorax ().:21> inm. Body 

 faintly reticulated. General color dark brown. 



Head about two-thirds as long as wide; cheeks straight; anterior 

 maro-in depressed at insertion of antenna; color uniformly l)rown. 

 Eyes small, black, not protruding; ocelli pale yellowish margined 

 with reddish. Mouth cone moderately long; maxillary palpi slender, 

 three segmented. Antennte two and one-half times as long as head, 

 eight segmented; bases separated by low elevation; relative lengths of 

 segments: 



12 3^^ _5_ JL A A 

 4.5 9 13 11 9.25 6.5 3.5 7.5 



Segment one rounded, wider than long; two is broadest, constricted 

 abruptly at base, broad at outer end; three and four are of similar 

 shape:, modioliform (uniformly constricted at each end with median 

 enlargement regular); outer end of five is quite broadly cut off; six 

 is abruptly constricted at base, outer half tapering gradually'; seven 

 nearly cylindrical; eight tapers gradually and bears one verj^ long, 

 slender hair at tip nearly as long as segment itself. One and two 

 uniforml}^ brown, concolorous with head; three and four with light 

 l)rownish ring around middle of enlargements; remainder pale 3^ellow- 

 ish, as is also basal half of live; rest of antenna brown; .spines around 

 middle of segments three and four and near end of live are long, 

 dark, and conspicuous. 



Prothorax full}- twice as wide as long, slightl}^ wider at posterior 

 edge than at anterior, without conspicuous spines, colored like head. 

 Mesothorax widest at posterior edge; sides curving gradually inward 

 to anterior edge. Metathorax as wide at front edge as mesothorax 

 is at hind edge, and its sides curve gradually to base of abdomen, so 

 pterothorax appears smoothly rounded. Wings present, extending to 

 tip of al)domen, slender except where broadened at base; tw^o longi- 

 tudinal veins, the second branching from the first near the broadened 

 base; the fore vein then inclines toward the costal and runs contiguous 

 with it to tip of wing; the hind vein runs close to hind edge, but is dis- 

 tinct. Costal spines twenty in number, very large and stout, nui"h 

 longer than the very weak fringe; fore vein bears four stout spines at 

 basal third and two not far from tip; hind vein bears five moderately 

 long spines; posterior fringes dark, heavy, and wavy. Wings gray- 

 ish brown, darkest over veins; fore wings at base and a rather broad 

 band at three-fourths their length transparently white, darkest brown 

 around the outer shaded portion. Legs of medium length; femora 

 and tibia^ dark brown except around outer ends of femora, and both 



