492 Pomona College Journal of Entomology 



Triozoida johnsonii n. sp. 

 (Figure 157, I.; 159, E; 160, G) 



Length of bodj- '2.2 mm.; length of forewing 3.0 mm.; greatest width 1.0 mm.; 

 width of vertex between eyes .18 mm.; witli ej-es .78 mm. General color dark 

 brown or black ; vertex sliining black ; dorsulum light brown. 



Head strongly deflexed, with eyes not quite as broad as thorax, not punctate. 

 Occipital margin arcuate, narrowly elevated over middle ; vertex between 

 post-ocellar regions without fovcal impressions, rounded toward the front as in 

 Calophya; post-ocellar regions distinctly and sharply elevated ; anterior ocellus 

 under rounded vertex, somewhat visible from front, more easily from below. 

 Facial cones sliort, obtuse at apex, vertical, posterior, beliind antennal insertions, 

 with very long pubescence distally. Labrum between and behind facial cones, ap- 

 pearing almost a third cone ; rostrum moderately long. Eyes very large, prominent, 

 hemispherical as in Trioza, projecting forward beyond margin of vertex. An- 

 tennae inserted in front of facial cones, of medium length; flagellum slender. 



Thorax arched, more coarsely punctate than head. Pronotum moderately short, 

 descending cephalad below occiput, depressed below dorsulum; longer laterally; 

 propleurites quite large, pyriform; pleural suture curved, extending to tip of 

 episternum ; epimeron largely visible ; forecoxte relativeh^ small, mostly concealed. 

 Dorsulum long, converging cephalad to a rounded point, spherically triangular. 

 Wings hyaline, shining, long, slender, almost three times as long as broad, broad- 

 est across first marginal cell, sliarply angulated at apex; first marginal cell smaller 

 than second; fourth furcal terminating at apex 'of wing; radius short, quite 

 straight; cubitial petiole distinctly present but extremely short; subcosta very 

 thick and dark from base to radial margin ; with three punctural spots on margin 

 of marginal and cubital cells. 



Male — Abdomen slender, rather long. Genital segment relatively not very 

 large; rounded; claspers quite long, simple, subacute at apex, pubescent; anal 

 valve short, broadly rounded, semi-ovate, simple, pubescent. 



Described from one male collected at Belize, British Honduras, by J. D. John- 

 son. This species is very closely related to Trioza caUfornica Crawf. in the struc- 

 ture of the forewing, vertex, head and notum. The subcosta in T. caUfornica is 

 large and heavy and the two cubitals, much lighter, are often slightly petiolate. 

 The similarity is so marked as to make these two species congeneric without a 

 doubt. 



Triozoida caUfornica Crawf. 

 (Syn. Trioza caUfornica Crawf.) 



1910— Pomona Journ. Ent. Vol. II, No. 2, p. 234. 



Aphalara Forst. 

 Head scarcely deflexed. Vertex quite flat, not rounded, broader than long, 

 with or without distinct foveal impressions or sulca ; produced anteriorly into two 

 roundly projecting lobes or epiphyses on each side of median suture. Anterior 

 ocellus under vertex, usually some what stalked, and often slightly visible from 

 above. Facial cones entirely wanting. Labrum prominent, elongate or subglobose. 

 Antennae rather short. 



