xv, 2 Crawford: Jumping Plant Lice 157 
f. Transverse callus connecting radius and media; hind tibise 
with spur at base; pterostigma open or closed. 
Carsidara Walker. 
f. Transverse callus in forewing wanting.. Mycopsylla Froggatt. 
e 2 . Forewings without pterostigma; hind tibiae with or without 
basal spur. 
f. Antennae long and very slender. 
g 1 . Vertex produced in front into two long points (not genal 
cones) ; hind tibiae without basal spur. 
Geijerolyma Froggatt. 
g 2 . Vertex not so produced, but more or less deeply cleft in 
front; hind tibiae with basal spur. 
Tyora Walker ( Mesohomotoma Kuwayama) . 
f. Antennae long but not slender, vertex deeply cleft in front. 
Freysuila Aleman. 
f. Antennae very short and slender; vertex not deeply cleft in 
front Macrohomotoma Kuwayama. 
c 2 . Head not birostrate, vertex more or less quadrate. 
d l . Margins of vertex turned up in a narrow rim; female genital 
segment long and acuminate Nesiope Kirkaldy. 
(P. Margins of vertex not turned up, but vertex usually inclined 
roundly forward and downward; female genital segment with 
dorsal valve constricted subapically.... Tenaphalara Kuwayama. 
a 2 . Cubitus and media without stalk (triozine) . 
b 1 . Antennae thick and hairy; gense sometimes swollen beneath into more 
or less conical processes Bactericera Puton. 
b 2 . Antennae slender and not hairy; gense without cones beneath. 
c 1 . Head more or less birostrate (as in Carsidara) .... BMnopsylla Riley. 
c 2 . Head not at all birostrate; vertex nearly quadrate, declivous. 
Tenaphalara triozipennis Crawford. 
Genus THYSA5F0GYNA novum 
Head cleft in front as in other genera of this subfamily; 
genal cones almost or quite wanting; vertex more or less quad- 
rate, concave, outer anterior corners sharply angled and ele- 
vated, with anterior ocellus in front at notch of frontal cleft; 
antennse slender except segments 1 and 2, not excessively lor\g; 
beak moderately long. 
Thorax large; legs large; hind tibiae with spur at base and 
large spines at apex; basal tarsus of hind legs with one black 
spine at apex. Forewings large, with closed pterostigma, short 
radius and indistinct pseudovein between radius and media; 
first marginal cell much smaller than second. 
Abdomen large; female genitalia somewhat dissimilar from 
other genera; dorsal valve large, with a dense fringe of hairs 
on lower margin; ventral valve very small and often retracted 
into preceding abdominal segment; ovipositor large, broadly 
truncate, edges fluted. 
Type of the genus, Thysanogyna minor Crawford. 
166470 — —3 
