no M. W. NIELSOX 



basal flange, apex of appendage truncate; ventral appendage very long, narrow, tube-like, 

 directed somewhat caudoventrad, extending beyond apex of dorsal appendage; gonopore 

 apical; connective Y-shaped; style with short apical hook; plate with distal appendage elongate, 

 slightly expanded medially. 



Specimen examined. 



Holotype <$, New Guinea: Wisselmeren, Enarotadi, 1850-1900111, 30.vii.1962 

 (/. Sedlacek) (BPBM, Honolulu). 



Biology. Unknown. 



Remarks. This is a rare species and has distinctive aedeagal characters exhibited 

 by two pairs of long spines on the aedeagus which separate quadrifida from all other 

 species in the genus Tharra. 



Tharra leucomelana (Walker) comb. n. 

 (Text-figs 294-298) 



Coelidia leucomelana Walker, 1870 : 313. Holotype £, Raja Ampat Is. (West Irian) (BMNH, 



London) [examined]. 

 Coelidia leucomelana Walker; Metcalf, 1964 : 56. 



Length: ^ 4-3°-5- I 5 mm, ? 5 - 3°-5-9c- mm. 



General colour testaceous with numerous pale, opaque, irregular small spots on elytra; 

 sexual dimorphism apparent. Crown testaceous at anterior half, ochraceous at posterior half, 

 especially in £; eyes light rufous to fuscous; pronotum testaceous in <$, light ochraceous in §; 

 scutellum testaceous in $, light fuscous in 9; elytra deeply testaceous with numerous pale ivory 

 irregular spots and a very narrow ochraceous band apically; clypeus and clypellus deeply 

 testaceous in <§, light fuscous in $; gena and lora ivory in both sexes. 



Head narrower than pronotum; crown long and very narrow posteriorly, produced distally 

 beyond anterior margin of eyes, distal length nearly one-third entire median length, striate 

 radially, lateral margins converging basally, disk slightly depressed medially, elevated above 

 level of eyes; ocelli small, situated anteriorly; eyes large, occupying over two-thirds entire 

 dorsal area of head; pronotum short, median length much less than median length of crown, 

 surface finely knobbed; scutellum small, median length slightly less than median length of 

 pronotum; elytra elongate, veins prominent, appendix well developed, venation as in description 

 of genus; clypeus elongate with median longitudinal carina extending about half way from 

 anterior margin to middle, lateral margins nearly parallel, constricted near antennal sockets, 

 surface finely granulose, rugulose along anterior margin; clypellus with lateral margin broadly 

 concave. 



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

 process slightly constricted medially, broad basally and apically, inner lateral margin aperturized 

 entirely, striate at apical one-fourth, apex sharply pointed ; aedeagus in lateral aspect with dorsal 

 appendage broadly sinuate, margins nearly equidistant; dorsal appendage with a distinct 

 dorsal, subapical flange, flange triangulate in dorsal aspect; ventral appendage very narrow, 

 tube-like, curved, apex barely reaching apex of dorsal appendage; stem of aedeagus with a 

 pair of distinct, ventral spines projecting distad and sharply pointed apically; gonopore apical; 

 connective Y-shaped; style with short claw apically; plate with distal segment semiglobular 

 at apical half. 



Female seventh sternum with posterior margin excised medially. 



Distribution. New Guinea, New Britain (new record). 



