xv, 2 Crawford: Jumping Plant Lice 1(57 



Tenaphalara triozipennis sp. nov. Plate II, fig. 6. 



Length of body, 2.1 millimeters; forewing, 2.4. General color 

 reddish brown ; thoracic dorsum with several lighter streaks ; 

 vertex with four black stripes; venter and legs paler; antennae 

 light brown ; black at tip. 



Head scarcely defiexed, nearly or quite as broad as thorax; 

 vertex about as long as broad, somewhat quadrate in outline but 

 anterior portion sharply bent downward, median suture im- 

 pressed and black, and a parallel black sulcus on each side of 

 it; posterior ocelli small, not elevated; front ocellus not visible 

 from above. Genaa not quite covering frons, scarcely swollen 

 beneath antenna] bases, cones wanting. Antennas a little longer 

 than width of head, slender. Eyes large. Rostrum long. 



Thorax scarcely arched, narrow; pronotum moderately long. 

 Legs slender ; hind tibiaa with a small spur at base and several 

 short black spines at apex. Forewings narrow, acutely pointed, 

 with several marginal brown spots and apical third maculated 

 irregularly with brown, pterostigma wanting; venation trio- 

 zine, but resembling that of Tenaphalara also. 



Abdomen slender, long. Female genital segment long, nearly 

 as long as abdomen, constricted midway; dorsal valve more con- 

 stricted than ventral, with distal half bluntly rounded at apex. 



Singapore {Baker), 1 female. 



This is a very interesting species, for it is unmistakably 

 closely allied to Tenaphalara, resembling especially T. sulcata 

 in characters of the head, genitalia, and thorax, but differing 

 in one important venational feature in which the species is dis- 

 tinctly triozine. The absence of the cubital petiole has always 

 been used as the basis for segregating the subfamily Triozinae, 

 but there are several species which seem to weaken this view. 

 Pauropsylla triozoptera, several species of Rhinopsylla, and now 

 this new species — all point to a possible fallacy in the current 

 classification. 



PSYLLIN^E 



In the North Temperate Zone the Psyllinae is the most nume- 

 rously represented of the subfamilies, the Triozinaa ranking a 

 close second. In. the Tropics, however, there are far fewer 

 species of this subfamily, the Pauropsyllinse and the Carsidarinaa 

 being the largest. Australia has a good many species of Psylla, 

 but their habitat is scarcely tropical. Of the ten or more Tem- 

 perate Zone genera only three (Psylla, Arytaina, and Euphalei-us) 

 are known thus far to have representatives in the Palaeotropics, 



