xv, 2 Crawford: Jumping Plant Lice 157 



/'. Transverse callus connecting radius and media; hind tibiae 

 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~. 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. 



tf. Margins of vertex turned up in a narrow rim; female genital 



segment long and acuminate Nesiope Kirkaldy. 



dP. 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). 



o 1 . Antennae thick and hairy; genae sometimes swollen beneath into more 



or less conical processes Bactericera Puton. 



6 2 . Antennae slender and not hairy; genae without cones beneath. 



c\ Head more or less birostrate (as in Carsidara) .... Rhinopsylla Riley. 

 c 2 . Head not at all birostrate; vertex nearly quadrate, declivous. 



Tenaphalara triozipennis Crawford. 



Genus THYSANOGYNA 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; 

 antennae slender except segments 1 and 2, not excessively long; 

 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. 



