ijo M. W. NIELSON 



Tharra bimaculata bimaculata subsp. n. 



(Text-figs 459-463) 



Length: ^ 5-30-6-00 mm, § 6-00-6-60 mm. 



General colour fuscous with ivory spots on elytra. Crown ochraceous; eyes fuscous; 

 pronotum deep fuscous to testaceous ; scutellum ochraceous ; elytra fuscous to testaceous with 

 a large ivory spot on middle of clavus and small ivory spots on remainder of elytra; clypeus 

 and clypellus ochraceous. 



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

 margin of eyes, distal length about one-third entire median length, striate radially, depressed 

 medially between eyes, lateral margins slightly convergent basally, disk elevated above eyes; 

 ocelli small, situated anteriorly; eyes moderate size, occupying nearly two-thirds dorsal area 

 of head; pronotum short, median length less than median length of crown, surface finely 

 knobbed; scutellum large, median length greater than median length of pronotum; elytra 

 elongate, veins prominent, appendix well developed, venation as in description of genus; 

 clypeus elongate, broad anteriorly, narrowed posteriorly, lateral margins constricted near 

 antennal sockets, without median longitudinal carina, surface finely knobbed, rugulose along 

 anterior margin; clypellus with lateral margins slightly concave. 



Male pygofer in lateral aspect with long, slender, narrow, curved process arising from 

 caudoventral margin, process with lateral margins broad basally, narrowly attenuated at apical 

 three-fourths, outer lateral margin sinuate at apical fourth, apex sharply pointed; aedeagus 

 in lateral aspect simple; dorsal appendage broad along basal three-fourths, narrowed apically, 

 curved slightly dorsally, without spines or flanges; ventral appendage long, tube-like, apex 

 expanded, reaching slightly beyond apex of dorsal appendage; gonopore apical; connective 

 Y-shaped ; style hooked apically; plate with distal appendage very long and narrow, slightly 

 expanded medially along dorsal margin. 



Female seventh sternum with posterior margin truncate. 



Specimens examined. 



Holotype $, Solomon Is.: Buka I., Gagan, 40 m, 8-n.xii.1959 (T. C. Maa) 

 (BPBM, Honolulu). 



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

 Buka I., Gagan, 40 m, 15 <$, 1 $, 8-11.xii.1959 (T. C. Maa); Bougainville, Munurai, 

 40m, 1 $, 7.VLI956 (/. L. Gressitt); Bougainville, Borioko, 300m, 1 $, 6.VLI956 

 [J. L. Gressitt) ; Buka Agr. Sta., ij,i$, 6-10.xii.1959 (T. C. Maa) (BMNH, London) ; 

 Bougainville, Boku, 50 m, 1 <$, 1 $, 4.VL1956 (/. L. Gressitt) (USNM, Washington); 

 1 <J, 1 $, same data as holotype, in author's collection. New Britain: Vudal, 

 S.W. of Keravat, 6$, 13.xii.1959 (T. C. Maa); Keravat, 135 m, 7 $, 20-25. xi.1959 

 (T. C. Maa); Gazelle Peninsula, Upper Warangoi, Illugi, 230 m, 1 $, 8-11.xii.1962 

 (/. Sedlacek) (BPBM, Honolulu); Vunabakan, 180 m, 10 km E. of Keravat, 3 $, 

 16-20. xi.1959 (T. C. Maa). New Guinea: Waris, S. of Hollandia, 450-500 m, 

 1 ?, 24-31.viii.1959 (T. C. Maa) (BPBM, Honolulu). 



Biology. Unknown. 



Remarks. This subspecies can be separated from bimaculata vudalensis by 

 the presence of rufous vittae on clavus of the male and with prominent ivory spots 

 on clavus of the female. 



