XV, 2 
Crawford: Jumping Plant Lice 
169 
c 1 . Pterostigma wanting; veins not sinuous Brachypsylla Froggatt. 
c". Pterostigma of forewing present and closed; veins sinuous; antenna; 
not longer than width of head Metapsylla Kuwayama. 
c 3 . Pterostigma present but open. 
d\ Wings membranous; eyes flattened Syncarpiolyma Froggatt. 
dr. Wings coriaceous; eyes reniform Eriopsylla Froggatt. 
Genus EUPHALERUS 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 ; projeleural 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 genre 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). 
F. 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 1 . Head and thorax without lateral black stripes; forewings maculated. 
b 1 . Length to tip of folded wings not over 3 millimeters; antennae not 
more than twice as long as width of head; genal cones somewhat 
divergent, not quadrate. 
e l . 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). 
<r. Forewing scarcely twice as long as broad, broad in basal half, 
thorax mottled with brown. (Fiji.) E. maculosus sp. nov. 
F. Length to tip of folded wings over 4 millimeters ; antennae three times 
as long as width of head; genal cones quadrate, not divergent; fore- 
wings slightly rhomboidal. (Malay Archipelago.) 
E. grandis sp. nov. 
