REVISION OF COELIDI I X A F. 167 



in both sexes ; eyes large, occupying almost two-thirds of the entire dorsal area of head ; pronotum 

 large, median length about equal to median length of crown; scutellum moderate size, median 

 length less 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 margin somewhat excised near antennal sockets, with faint, median 

 longitudinal carina, surface finely granulose, rugulose along anterior margin; clypeus with lateral 

 margins nearly parallel. 



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

 process broad at basal half, narrowly attenuated at apical half; aedeagus in lateral aspect 

 simple; dorsal appendage broad at basal three-fourths, narrowed apically and curved caudodor- 

 sally, without spines or flanges; ventral appendage long, narrow, tube-like, apex extending 

 beyond apex of dorsal appendage; gonopore apical; connective Y-shaped; style clawed apically; 

 plate with distal appendage very long and narrow, lateral margins nearly parallel. 



Female seventh sternum with posterior margin produced medially. 



Distribution. Guam. 



Specimens examined. 



Tharra ocellata Metcalf, holotype <J, Guam: Ritidian Pt, 16.iv.1936 (E. H. Bryan, 

 Jr) (BPBM, Honolulu). 



Guam: Pt Ritidian, 2 $, 30.V.1945 (G. E. Bohart &• J ■ L. Gressitt); Machanao, 1 $, 6.viii.iQ36 

 (O. H. Swezey) ; Upi Trail, 1 $, 5.V. 1936 (£. H. Bryan, Jr) ; Haputo Pt, 14.iii.1948 (K. L. Maehler) ; 

 Mt Sta. Rosa, 1 $, 3^.1945 (G. E. Bohart); Northern Guam I., 1 $, 29. iv. 1946 (N. L. H. Krauss); 

 Haputo Pt, on Morinda citrifolia, 1 g, 19.iii.1948; Harmon Field, 1 $, 30.1.1949; Potts Jet., 

 1 (J, ix. 1952 (N. L. H. Krauss). 



Biology. The only known host record is Morinda citrifolia. Collection records 

 indicate that this species is most prevalent in May and June. 



Remarks. From bimaculata, to which it is similar in male genital characteristics, 

 ocellata can be separated by the absence of the ivory spots on the elytra. 



Tharra crenulata sp. n. 



(Text-figs 454-458) 



Length: $ 5-10-5-40 mm, § 5-90-6-30 mm. 



General colour fuscous to testaceous. Crown ochraceous; eyes rufofuscous; pronotum 

 fuscous to testaceous; scutellum fuscous to testaceous; elytra fuscous to testaceous with light 

 fuscous area surrounding the appendix and subapically along the costal area; teneral forms 

 sometimes very light ivory; clypeus ochraceous with a very distinctive transverse rufous 

 band in $, very light or pale in $; 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, slightly 

 depressed medially, lateral margins slightly convex and slightly convergent basally, disk elevated 

 above eyes; ocelli small, situated anteriorly; eyes moderate size, somewhat globular, occupying 

 a little over half entire dorsal area of head; pronotum large, median length slightly 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, 

 distinctly excised at about middle near antennal sockets, without median longitudinal carina, 

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

 expanded apically. 



