XV, 2 
Crmvford: Jumping Plant Lice 
203 
Thorax narrow, somewhat arched; legs not as long as in re- 
lated species ; hind tibiae with distinct basal spur and large sub- 
apical spine. Forewings nearly opaque, membrane thickened 
and whitish, with numerous small, light brown spots all over. 
Shaped as in related species, but apex more pointed. 
Abdomen long. Female genital segment as long as abdomen, 
acutely pointed, slender. 
West Borneo, Mowong {Muir), 1 female. 
Genus STENOPSYLLA Kuwayama 
Head declivous, not as broad as thorax; gense produced into 
conical processes, not covering frons completely but nearly so; 
clypeus subspherical ; beak of median length. Antennae long, 
very thick and thickly pubescent. Eyes large. Thorax broad; 
legs stout; hind tibiae with basal spur and subapical spine and 
several apical spines. Forewings large, hyaline, triozine in ve- 
nation, radius very long. 
Type of the genus, Stenoysylla. nigricornis Kuwayama. 
This genus bears some resemblance to Bactericera but differs 
in the very pubescent antennae and presence of genal cones. In 
the armature of the hind tibiae there is a close similarity to 
Megatrioza. 
Key to the species. 
cJ. Body yellowish or light brown, dorsum flecked with brown; genal cones 
acutely pointed; antennae half as long as forewings; insect about 5 
or 6 millimeters long. (Formosa.) 
S. nigricornis Kuwayama (’10: 54). 
a 2 . Body light brown, dorsulum and vertex black or dark brown; genal 
cones broadly rounded at apex; antennse three-fourths as long as fore- 
wings; insect 6 to 7 millimeters long. (Philippines.) 
S. longicornis sp. nov. 
Stenopsylla longicornis sp. nov. Text fig. 3. 
Length of body, 4 millimeters; forewing, 6; antennae 4.5. 
Dorsulum and eyes dark brown or black; vertex, mesoscutum 
and abdominal notum brown ; rest of body orange yellow to light 
brown; antenme brown to black; legs orange yellow. 
Head much narrower than thorax, strongly declivous; vertex 
smooth, broadly concave, about half as long as broad, median 
suture longer than lateral edges, without foveal depressions. 
Genal cones nearly as long as vertex, directed vertically down- 
ward, broad and bluntly rounded, divergent, sparsely hairy. 
Frons slightly visible at front ocellus. Antennse about five times 
as long as width of head, segments 1 and 2 short and thick, 
