420 



Described from 1 female. 3 males (type, allotype and 

 paratyi^es) collected on Eragrostis variabilis on tlie south wall 

 of Palolo Valley, Oahi., May 30, 1919 (J. C. Bridwell ) and 

 1 male (paratype) on the same gi'ass on the side of the south- 

 ernmost ridge of the Koolau Range, Oahu, Xov. 16, 1919 

 (Bridwell)/ 



Xanthoencyrtus bridwelli n. sp. Fig. 7. 



Female: Head slightly wider than in aptrnis in proportion to the 

 length, the space between the eyes a little wider, the ocelli more minute 

 and indistinct, the space separating the posterior pair from the eye- 

 margins distinctly greater than their distance apart; the space between 

 the eyes caved in after death much as in aptcnis but the triangular 

 raised area in the upper part mucli less prominent: and forming anter- 

 iorly a right angle instead of an acute angle. Antennae a little stouter,, 

 the scape a trifle wider, the funicle stouter so that the pedicel at apex 

 is hardly thicker than the following joint, the first funicle joint some- 

 what longer and the sixth somewhat wider, the latter being a little 

 wider than long. Thorax practically as in aptcrus, the abdomen appar- 

 ently somewhat smaller, the ovipositor slightly protruded. Head, thorax 

 and abdomen very smooth and shiny, with no reticulations apparent in 

 any part. Pubescence very sparse and not easily detected. 



Length: (0.79 to) 1.32 (with head stretched forward); width of 

 vertex : 0.235 '• width of mesoscutum : 0.273 mm. 



Head and thorax ochraceous orange (R.), the scape and pedicel 

 concolorous, the funicle ochraceous buff (R.), the club piceous and often 

 paler or yellowish at base ; legs slightly paler than the body, the hind 

 coxae and femore except at apex and sometimes the middle coxae more 

 or less piceous; abdomen shining black. 



Male : Much like the male of aptcrus Init the head is wider with 

 the space between the eyes much broader, the ocelli more minute and 

 closer together so that the distance from either of the posterior pair tO' 

 the eye-margin is considerably greater than their distance apart; scape 

 practically the same, the sixth funicle joint and base of club with a 

 row of about eight clavate hairs arranged five and three on each re- 

 spectively ; thorax similar, the scutellum flat from base to apex ; abdomen 

 triangularly to broadly ovate, depending much on manner of drying after 

 death, as long or a little longer than thorax. Head and notum of 

 thorax extremely finely and delicately reticulate, appearing smooth and 

 shiny; basal tergite of abdomen much more distinctly and coarsely 

 reticulate than on the head or thorax, and slightly more finely and 

 more uniformly as to size than in aptevus. Pubescence very sparse and 

 fine. 



Length: (0.55 to) 0.88; width of vertex: 0.216; width of meso- 

 .scutum : 0.254 nMW. 



