xv, a Crawford: Jumping Plant Lice 169 



c 1 . Pterostigma wanting; veins not sinuous Brachypsylla Froggatt. 



c 2 . Pterostigma qf forewing present and closed; veins sinuous; antenna 



not longer than width of head Metapsylla Kuwayama. 



c s . Pterostigma present but open. 



eZ\ Wings membranous; eyes flattened Syncarpiolyma Froggatt. 



d*. Wings coriaceous; eyes reniform Eriopsylla Froggatt. 



Genus ETJPHALERTJS Schwarz 



Head nearly or quite as broad as thorax, strongly deflexed; 

 vertex flat, often rugulose, with posterior ocelli scarcely elevated 

 and anterior ocellus visible from, above; genal cones large, flat, 

 continuing plane of vertex almost without interruption, usually 

 quadrate; eyes large, somewhat recessive; antennae variable in 

 length. 



Thorax strongly arched and broad; propleural suture ex- 

 tending to middle of end of pronotum, mesonotum large; legs 

 robust, hind tibiae usually with basal spur; forewings large, 

 broad, rounded or somewhat angulate at apex; membrane thick, 

 subhyaline or opaque, maculated or unicolorous; pterostigma 

 present. 



Type of the genus, Euphalerus nidifex Schwarz. 



Four species are recorded from North America. Five are 

 now known from the Eastern Hemisphere. 



Key to the species. 



a 1 . Head and thorax with a prominent black stripe from tip of gense to 



base of forewings and continued along posterior margin of forewing. 



b 1 . Forewing with distinct pterostigma; first marginal cell larger than 



second; genal cones quadrate, not at all divergent; vertex deeply 



rugose or vermiculate-punctate. (South India and Bengal.) 



E. vittatus Crawford ('12: 423). 

 b\ Forewing with pterostigma small or wanting; first marginal cell a 

 little smaller than second; genal cones slightly divergent; vertex 

 only slightly rugulose. (Philippines.) 



E. nigrivittatus Crawford ('13:298). 

 a 2 . Head and thorax without lateral black stripes; forewings maculated. 

 b\ Length to tip of folded wings not over 3 millimeters; antennas not 

 more than twice as long as width of head; genal cones somewhat 

 divergent, not quadrate. 

 c\ Forewing much more than twice as long as broad, narrow in basal 

 half; thorax not mottled with brown; inhabiting Citrus. (Phil- 

 ippines, Formosa, Java, Malay Archipelago, Bengal, southern 



India, and southern China.) E. citri (Kuwayama). 



cr. Forewing scarcely twice as long as broad, broad in basal half, 



thorax mottled with brown. (Fiji.) E. maculosus sp. nov. 



o a . Length to tip of folded wings over 4 millimeters; antenna? three times 

 as long as width of head; genal cones quadrate, not divergent; fore- 

 wings slightly rhomboidal. (Malay Archipelago.) 



E. grandis sp. nov. 



