no. 3625 LIBERIAN STREPSIPTERA — FOX 11 



Hindleg: With thick femur slightly longer than more slender, 

 tapered tibia. First subsegment of tarsi much shorter than sum of 

 terminal three. 



Aedeagus: Thick for about two-thirds its length, then narrowing 

 abruptly before reaching apical hook; apex slightly rounded on ventral 

 side with acutely pointed dorsal projection. 



Abdominal segment x: About as broad as long with rounded 

 posterior. 



Female, larva, and host unknown. 



Holotype male: Suakoko, Liberia, light trap, February 1952, 

 Blickenstaff, USNM type no. 69566. Six paratype males, same data, 

 4 at USNM and 2 at CM. Also 3 fragmentary specimens at USNM 

 probably this species. 



Discussion: Although this species does not exactly conform in 

 venation to stipulations in Bohart's (1951) revision of the Myrmecoli- 

 cidae, all the other characters indicate its relationship, and it keys 

 most closely to the retrorsus group established by Luna de Carvalho 

 (1959). 



Caenocholax bassa is much smaller (1 mm) than any other Caenocho- 

 lax. With the exception of the big C. golias Luna de Carvalho (2.2 mm) , 

 the other species in the retrorsus group average 1.5 mm. Disregarding 

 size, it most closely resembles C. horberlandti (Luna de Carvalho) and 

 C. boharti (Luna de Carvalho) but can be distinguished easily from 

 either by the proportion of the antennal segments, particularly of 

 flabellum in, and by the shaping of both the postlumbium and the 

 metathoracic sclerites. 



This species is named for one of the largest Liberian tribes, which 

 lives southeast of Suakoko. 



Caenocholax Itarleyi, new species 



Figures 45-51 



Male: Body dark brown, 1.1 mm long; median breadth of hindwing 

 1.2 mm; wingspread 2.9 mm; length of aedeagus 0.12 mm. 



Head: With narrow, slightly convex vertex. Antennal segment iv 

 extremely small and flabellum of segment in reaching middle of vi; 

 segment vn slightly longer than vi. Mouthparts with slender mandibles 

 that cross within buccal cavity and are about one-third longer than 

 thick distal portion of maxillary palpus; proximal segment of maxillary 

 palpus not clear. Palpus and antennal segments in-vn covered with 

 minute hairs and sensoria. Eye with 4 large ocelli visible on inner rim 

 from dorsal view. 



Metathorax: With rounded anterior margin of prescutum extending 

 slightly beyond tips of scuti and posterior margin not well denned; 

 scutellum clearly separated, dome shaped; postlumbium broad and 



