156 M. W. NIELSON 



Caroline Is.: Fananu I., Nomwin Atoll, 15 £, 1 $, 17-18.il. 1954 (/. W. Beardsley); Truk 

 Is., Fefan I., Mt Iron, 3^, 31.1.1953 (/. L. Gressitt); Truk Is., Moen, 4 <$, 1 9, 9.^.1949 (R. W. L. 

 Potts); Truk Is., Dublon, 1 9, 9-13.ii.1948 (K. L. Maehler); Truk Is., Moen I., Mt Terok, 2 9, 

 28.xii.1952 (/. L. Gressitt); Truk Atoll, Dublon I., 2 <$, 4 $, 10-n.ii.1948; Truk Atoll, Pis I., 

 3 ^ 3.VL1946 (//. if. Townes); Truk Is., Moen, 2 <J, 2 §, 23.v-31.vii. 1946 (H. K. Townes); 

 Truk Atoll, Tol I., Mt Unibot, 1 <J, 3.1.1953 (/. L. Gressitt). 



A careful study of the material on hand showed that there exists a sexual 

 dimorphism of this species. The male is characterized by the bright red vittae 

 on the elytra, while the female has a distinct, broad, ivory spot on the clavus. 

 Through association of the sexes, rubrovittata Metcalf and flavomaculata Metcalf 

 weie found to represent a male and female, respectively, of the same species, thus 

 flavomaculata is the valid species by priority by pagination. The illustrations of 

 rubrovittata by Metcalf (1950 : 75, figs 10, a-c) represent a male and not a female 

 as stated in his paper. 



Biology. Unknown. 



Remarks. Tharra flavomaculata is the nominate form of five subspecies and 

 can only be separated from these forms by the colour patterns as described in the 

 forewings and by geographical distribution. The males are ochraceous with light 

 orange on elytra, with a narrow subapical fuscous band. The females are beautifully 

 marked with a long ivory or yellow oval spot on clavus and a long, narrow band 

 along middle of costa against a deep fuscous ground. 



Tharra flavomaculata superba Linnavuori 



Tharra flavomaculata superba Linnavuori, 1960a : 293. Holotype <J, Caroline Is.: Kusaie 

 (USNM, Washington) [examined]. 



Length: <$ 4-90-5-30 mm, 9 5-60-5-90 mm. 



General colour ochraceous with a narrow, fuscous subapical band on elytra in $, fuscous 

 to testaceous with numerous yellow or ivory markings on elytra and dorsal area of head, 

 pronotum and scutellum in $; sexual dimorphism apparent. Crown ochraceous with a narrow, 

 longitudinal fuscous marking along middle in g, deep testaceous with two lateral spots along 

 middle between eyes in $; pronotum ochraceous in $, fuscous with a broad yellow band along 

 anterior margin between eyes in 9 1 scutellum ochraceous in g, deep testaceous with a large, 

 semicircular yellow spot along middle in $, elytra ochraceous to orange with a narrow fuscous 

 subapical band in <J, deep testaceous with a long, lateral yellow band anteriorly on clavus, 

 a broad longitudinal ivory spot along clavus, a long, narrow yellow band along middle of 

 costa, and three small yellow spots subapically in $; clypeus and clypellus ochraceous in $, 

 pale ochraceous in 9 with a broad T-shaped fuscous band on clypeus ; external morphological 

 characteristics as in the nominate form, flavomaculata; male and female genitalia as in the 

 nominate form, flavomaculata. 



Distribution. Caroline Islands: Kusaie. 



Specimens examined. 



Tharra flavomaculata superba Linnavuori, holotype <$ and allotype 9» Caroline 

 Is.: Kusaie, Mt Matante, 11.ii.1953 (Clark) (USNM, Washington). 



Caroline Is.: Kusaie I., Mt Tefayat, 800-1200 ft, 6 J, 6 9. 21.viii.1946 (H. K. Townes); 

 Kusaie I., Mt Buache, 1500-1930 ft, 3 g, 19.viii.1946 (H. K. Townes) ; 2 g, same data as holotype; 



