XV, 2 
Crawford: Jumping Plant Lice 
167 
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. Genas not quite covering frons, scarcely swollen 
beneath antennal 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 tibias 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 Triozinse, 
but there are several species which seem to weaken this view. 
Pauropsylla triosoptera, several species of Rhiuopsylla, 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 Triozinse ranking a 
close second. In the Tropics, however, there are far fewer 
species of this subfamily, the Pauropsyllinse and the Carsidarinae 
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 Euphalerus) 
are known thus far to have representatives in the Palaeotropics, 
