94 INSECUTOR INSCITI^ MENSTRUUS 



Rhipiphorothrips cruentatus, new species. 



Female {macro pterous). — Length about 1.4 mm. Dorsal 

 surface deeply reticulate. Color of fully matured individuals 

 dark blackish brown, with legs and antennae yellow and the 

 head, dorsum of pterothorax laterad and caudad to scutellum, 

 median third of abdomen, and last three abdominal segments 

 distinctly paler ; segments 7 and 8 of antennae and apex of 

 segment G more or less darkened with gray ; fore wings yel- 

 lowish, with costa and longitudinal veins slightly darker, and 

 scale, posterior margin, and extreme base, dark brown ; hind 

 wings yellowish, with dark brown median vein. Teneral indi- 

 viduals paler than as above described and with the sides of 

 head, thorax, and abdomen suffused with blood-red hypo- 

 dermal pigmentation. 



Head deeply rugoso-reticulate, about 1.21 times as wide as 

 long and slightly longer than prothorax, very slightly broadest 

 across eyes ; vertex strongly elevated and produced in front 

 of eyes over insertion of antennae, notched anteriorly ; cheeks 

 nearly parallel in basal half, swollen behind eyes and abruptly 

 constricted at extreme base where inserted in prothorax, the 

 anterior margin of this neck-like constriction marked with a 

 prominent, raised, arcuate, dark carina. Eyes about equal in 

 length to their distance from posterior margin of head and 

 half as wide as their interval, strongly protruding in front, 

 nonsetose. Ocelli nearly equidistant, anterior ocellus directed 

 forward and situated slightly in advance of anterior margin of 

 eyes, posterior ocelli directed laterally; pigment bright red. 

 Antennae about 2.2 times as long as head, structure normal 

 to genus. 



Prothorax about 1.3.") times as wide as long, as wide at 

 apex as at base, sides evenly rounded, slightly shorter than 

 head and with similar reticulation ; color distinctly darker 

 than that of head. Pterothorax 1.5 times as wide as pro- 

 thorax, deeply reticulated ; scutellum rugose, about 1.43 times 

 as long as wide. Wings normal to genus, the scale of the fore 

 pair heavily chitinized and, when the wings are at rest, fitting 

 under the edi>e of the scutellum. 



