492 Pomona College Journal of Entomology 



Triozoida johnsonii n. sp. 

 (Figure 157, L; 1;>9, E; 160, G) 



Length of body 2.2 mm.; length of forewing 3.0 mm.; greatest width 1.0 mm.; 

 width of vertex between eyes .18 mm.; with eyes .78 mm. General color dark 

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



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

 Occipital margin arcuate, narrowly elevated over middle; vertex between 

 post-ocellar regions without foveal 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 short, obtuse at apex, vertical, posterior, behind 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- 

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



Thorax arched, more coarsely pimctate 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; cpimcron largely visible; forecoxae relatively small, mostly concealed. 

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

 Jf'iiigs 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 f ureal 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, broadlj' rounded, semi-ovate, simple, pubescent. 



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

 son. Tiiis species is very closely related to Triosa calif ornica Crawf. in the struc- 

 ture of tlie forewing, vertex, head and notum. The subcosta in T. californica is 

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

 Tlie similarity is so m.arked as to make these two species congeneric without a 

 doubt. 



Triozoida californica Crawf. 

 (Syn. Trioza californica Crawf.) 



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



Aphalara I'^orst. 

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

 with or witliout 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 wliat stalked, and often slightly visible from 

 above. Facial cones entirely wanting. E.-ihrinn i)roiiiincnt, elongate or subglobose. 

 Antennte rather short 



