1888.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 663 



2. Antennai 14-jointed 4 - 



Antenna? 15-jointed. 



Head and thorax not entirely black 3. 



Head and thorax entirely black. 



Hind coxa? black or black basally. 



Petiole, black or piceons L. cucurbitaphidia n. sp. 



Petiole yellow or yellowish-brown. 



Terminal anteunal joint not longer than the preceding. 



L. eragroataphidia n. sp. 

 Terminal antennal joint longer than the preceding. 



L. CoquiUetti n. sp. 

 Hind coxae not black, either testaceous or yellow. 



Hind tarsi as long as their tibia?; third antennal joint nearly thrice as 



long as thick L - citraphia A&hm. 



Hind tarsi shorter than their tibiae ; third antennal joint hardly twice 



as long as thick L - "'•"'' "• s ''- 



3. Face yellow ; collar, pleura, and metathorax rufo-testaceous. ..L. ribaphidia n. sp. 

 ' Face piceous ; collar yellow, pleura black, metathorax piceous at apex. 



L. testaceipea Cress. 



Variable; wholly brownish piceous or yellow-ferruginous L. minutusjx. sp. 



4 Hind and middle coxa? black, or at least so basally ; legs brown. 



L. abiitilaphidis n. sp. 



Hind coxa? brown. 



Face piceous ; terminal antennal joint not or hardly longer than the preceding 



. oint L. baccharaphidia n. sp. 



Face black; terminal'antenual joint one-third longer than the preceding 



joint L.goaaypii n. sp. 



Hind coxa?, yellow. , 



Petiole yellow, the abdomen shading into black posteriorly .... £. triUci u. sp. 







Females. 



, , 2. 



1. Antenna? 13-jointed or less 



Antenme 14-joiuted. . . 



Middle and posterior coxa? piceous black; legs dark brown. .L.picewenlnan.^ 



2. Antenna? 12-jointed - # 



Antenna? 13-joiuted. 



Middle and posterior coxa- black or brown-black. 



Metathorax black ; terminal antennal joint one-third longer than the pre- 



ceding joint. 

 Petiole short; brown or black L. cucv^bitaphidia n. sp. 



Petiole long yellow '<■ -»?**^£ 



Metathorax piceous or brown ; petiole brown; terminal antennal joint not 



longer than the preceding / -" W * , ° P ' 



Hind cox» black or black basally. 



Hind tarsi not louger than the hiud tibia?. 



Legs pale brownish-yellow, sometimes obfuscated. 



° l l. eragroataphidia n. sp. 



, . , L , n ..£. CoquiUetti D. sp. 

 Legs bright honey-yellow 



Hind tarsi distinctly longer than hind tibia-. a bdom- 



Hind femora and tibia? dark brown ; petiole yellowish, .he 1st abdom 



. , + t „„„ .. L. baccharaphidia n. sp. 



mal segment brown iJ.M ftn ,m.i 



Hind femora and tibia? honey-yellow; petiole and tl„ Is a • ■ ' 



X. perstcopntoM n. sp. 

 segment yellow - 1 



