446 



Key to the Species. 



A^. Color of body nearly all black or dark brown; dorsum con- 

 spicnonsly reticnlately marked ; cnbital vein of forewing 

 forked a little distad of midpoint; antennae scarcely 

 longer than width of head; male forceps very short, not 

 more than three times as long as broad. Oahu and 

 Molokai. 7^. gracilis n. sp. 



A". Color not nniformly black, very rarely even brown over 

 most of l)ody ; cnbital vein of forewing forked at or 

 very slightly distad of midpoint; male forceps at least 

 4 times as long as broad. 



B^ Color typically yellow and black; head and some of no- 

 tnm black and remainder yellow, bnt sometimes color 

 mostly yellowish or rarely mostly brown ; reticulation i 

 of dorsum indistinct; antennae distinctly longer than 

 width of head; insect about 2.5 mm. long to tip of 

 folded wings. Hawaii and Lanai. K. nigricapita n. sp. 



B-. Color uniformly orange or yellowish ; reticulation some- 

 times distinct; antennae not longer than width of head; 

 insect about 2.0 mm. long to tip of folded wings. 

 Hawaii. K. mi)inta n. sp. 



Kuiraijama nigricapita n. sp. 



Length of bod}', male i.i mm.; female i.6 mm.; length of forewing, 

 male i.8; female 2.3. Color dark brown or black contrasted with yel- 

 low ; head usually entirely black, sometimes brown on vertex but eyes 

 black; male usually orange or pale yellow on thorax and abdomen; 

 female usually with pronotum, anterior portion of dorsulum, mesoscu- 

 tum, metascutum and narrow longitudinal band on abdominal notum 

 black or brown, but sometimes some or all of these areas pale ; remainder 

 of female body orange or pale yellow ; legs yellow in both sexes, with 

 tarsi often black; antennae paler than head, the distal third or half some- 

 times darker than the basal portion ; beak black. 



Head nearly as broad as metathorax, somewhat declivous ; vertex 

 more than half as long as broad, with a prominent discal depression 

 on each side of median line, reticnlately marked, sometimes slightly 

 hairy. Genae subspherically swollen beneath each antennal socket, lobes 

 nearly contiguous beneath front ocellus, cones wanting and clypeus 

 therefore not concealed from view. Beak short, conspicuous by its dark 



