THE JUMPING PLANT-LICE OR PSYLLID^ OF THE NEW WORLD. 57 



Genus CARSIDARA Walker. 

 Carsidara Walker '69: 329.— Scott '82: 466.— Crawford 'lib: 484. 



Head very deeply cleft m front; vertex short, lobes diverging 

 toward anterior margin of eyes; gense large, composing anterior 

 portion of what appears to be the vertex; front ocellus at end of 

 median line of vertex, near the middle of the top of the head ; genas 

 not produced below, as in Freysuila; frons mostly covered by gense, 

 sometimes slightly visible. Antennae ver}^ long and slender. Beak 

 long. Thorax not broad. Hind tibiae with a large spur at base. 

 Wings hyaline, angulate at apex, with a pterostigma. 



Type oj genus. — Carsidara marginalis Walker. 



The four following species from the American tropics are very 

 closely related to each other. This seems to be a tropical genus 

 almost exclusively. 



SYNOPSIS OF SPECIES. 



a'. Length to tip of folded wings about 5 mm.; head large, subglobose in profile. 



gigantea Crawford. 

 a?. Length about 4 mm., or less. 



¥. Thoracic dorsum conspicuously striped; length sometimes slightly over 4 mm. 



dugesii Loew. 

 h^. Thoracic dorsum pale, not striped, or at most very indistinctly so; size smaller. 



c'. Color flavous; body surface not pluverulent inexicana Crawford. 



c^. Color whitish; body surface pulverulent; sometimes indistinctly striped on 

 dorsum of thorax concolor Crawford. 



CARSIDARA GIGANTEA Crawford. 

 Figs. 149, 151, 373, 492. 



Carsidara gigantea Crawford 'lib: 486. 



Length of body 3 mm. ; length of forewing 4.3; width of head 0.96. 

 General color light yellowish brown; thoracic dorsum with yellowish 

 or pale stripes; distal portions of antennal segments black. Body 

 large. 



Head not deflexed, finely punctate, not quite as broad as thorax, 

 arcuate on posterior margin; vertex with a deep sulcate depression 

 between posterior and anterior ocelli, and a lesser one extending 

 outward on each side from anterior ocellus; anterior ocellus almost 

 in the middle of the top of the head (vertex and gense together); 

 posterior ocelli situated well forward, ahnost in a line transversely 

 with anterior ocellus. Clypeus very small, inconspicuous; beak very 

 long; slender and acutely pointed. Antennae fully as long as body, 

 very slender. 



Thorax long, rather large, punctate, striped. Propleurites large; 

 pleural suture curved; praescutum long and rather broad. Basal 

 spur on hind tibiae large and conspicuous. Wings large, hyaHne, 



