44 m. w. nielson 



Specimens examined. 



Holotype <$, Solomon Islands: San Cristoval, Bweinaniawarikiaper, light trap, 

 12.viii.1960 (C. W. O'Brien) (BPBM, Honolulu). 



Paratypes. Solomon Islands: allotype $, Florida Is., Nggela I., Haleta, o-ioom, 

 light trap, 7.x. 1964 (R. Straatman) (BPBM, Honolulu); 1 <$, same data as allotype 

 (USNM, Washington); 1 <$, same data as allotype (BMNH, London); Guadalcanal, 

 Mt Austin, 300 m, 1 o*. 25.iv.1964 (R. Straatman), in author's collection. 



Biology. Host is unknown but records indicate that adults are prevalent 

 from April to October. 



Remarks. This species is similar to flamma in head characters and the form of 

 the aedeagus but frontalis can be distinguished from the latter by the blade-like 

 pygofer process and the subquadrate plate. 



Tharra flamma sp. n. 



(Text-figs 88-92) 



Length: $ 5-40-6-00 mm, $ 5-50-6-20 mm. 



Colour ochre with brown markings on elytra. Head, pronotum, and scutellum generally 

 ochraceous, sometimes pronotum specked with brown; scutellum usually with brown markings; 

 eyes dark brown. 



Head narrower than pronotum; crown long and broad, produced distally beyond anterior 

 margin of eyes, distal length about one-half entire median length, striate radially, carinate 

 medially, lateral margins parallel, disk elevated above eyes, interocular width nearly equal to 

 median length; ocelli small, situated laterally; eyes moderate size, occupying less than one-half 

 total dorsal area of head, compressed laterally; pronotum with median length less than median 

 length of crown, surface minutely knobbed; scutellum large, median length greater than 

 median length of pronotum; elytra elongate, veins distinct, appendix well developed; clypeus 

 long, very broad anteriorly, with prominent, short median longitudinal carina anteriorly, 

 surface finely granulose at posterior two-thirds, transversely rugulose at anterior one-third; 

 clypellus short, with lateral margins nearly parallel. 



Male pygofer in lateral aspect with large curved process arising from caudoventral margin, 

 process constricted medially, trumpet-shaped apically, apical margins membraneous; aedeagus 

 in lateral aspect simple; dorsal appendage without spines or processes, attenuated at apical 

 two-thirds, curved dorsally apically; ventral appendage long, extending beyond apex of dorsal 

 appendage, slightly enlarged and hooked apically; connective Y-shaped; style clawed apically; 

 plate with terminal appendage elongate, dorsal margin expanded medially. 



Female seventh sternum with posterior margin slightly produced medially. 



Specimens examined. 



Holotype ^, Moluccas: Ambon (F. Muir) (BPBM, Honolulu). 



Paratypes. Moluccas: allotype $, same data as holotype (BPBM, Honolulu); 

 1^,1$, same data as holotype (BMNH, London); 1 $, same data as holotype 

 (USNM, Washington) ; 1 <$, 1 $, same data as holotype, in author's collection. 



Biology. Unknown. 



Remarks. This species is one of the few in the genus Tharra that has a distinct 

 carina on the clypeus, albeit an incomplete one. Among the long-headed species, 

 flamma can be distinguished from oxyomma by this character and the broad crown. 



