444 Pomona College Journal of Entomology 



R. Both marginal cells and distal portion of cubital cell maculated. Wing 

 subacute at apex. \'ertex elevated distinctly along median suture. 

 Body mottled. A. maciilata Crawf. 



BB. With a more or less faint maculation across wing midway, from first 

 marginal cell through most of radial cell : wing very acute at apex. 

 \'ertex more nearly fiat, whitish. Body not mottled. 



A. acittipciinis Crawf. 

 AA. Wings entirely clear, not maculated. Facial cones broadly riHimitru. 



Proepisternum vertical : epimeron posterior and lateral. 

 B. Body very small. Wings small, and less than two and a half times as 

 long as broad ; radius very short and straight. Female genital segment 

 about as long as dorso-ventral width. Anal valve of male small. Eyes 

 small. A. viridis Crawf. 



BB. Body large. Wings large, more than two and a half times as long as 

 broad; radius not very short. Eyes large. 

 C. Second marginal cell smaller than first: fourth furcal one-fourth as 

 long as second cubital. Propleurites small. Female genital segment 

 longer than dorso-vcntral widtli. Anal valve large, longer than 

 claspers. A. magnoUac Ashni. 



CC. Second marginal cell as large as first ; fourth furcal one-half as long 

 as second cubital. Propleurites very large. Female genital segment 

 not longer than dorso-ventral width. Anal valve small. 



.]. arbolciisis Crawf. 



Allotrioza arbolensis ( Crawf.) 



(Syn. Paratrioza arbolensis Crawf.) 



(Fig. 152, J. M; 153, N; 154, y\: 155, I) 



Length of body 2.6 mm.; length of forewing 3.9 mm.; greatest width 1.5 

 mm. ; width of vertex between eyes .60 mm. ; with eyes .96 mm. General 

 color light green throughout. Body very large. 



Head not deflexed, very large, coarsely punctate. Posterior margin of 

 vertex somewhat arcuate ; vertex quite distinctly raised plate-like ; discal area 

 with a deep fovea on each side posteriorly, and a marked excision diverging 

 toward insertion of antenna?, deeper at the margins of the excision than in the 

 middle ; a prominent elevation left on each side of median suture not quite 

 attaining anterior margin of vertex ; median suture very prominent. Eyes 

 very large. Facial cones short, horizontal, broadly rounded at apex, slightly 

 flexed midway, quite divergent, moderately pubescent. .Antennae large basally. 

 inserted beneath margin of vertex more or less laterad. Labrum very large, 

 easily visible from in front. 



Thorax large, and broad, slightly broader than head including eyes, more 

 coarsely punctate than vertex. Pronotum very long, about one-third as long 

 as dorsulum, not depressed below dorsulum and head ; with a fovea on eacii 

 side above pleurites ; pro])leurites large ; episternum unusually large. Dorsulum 

 broad, but not ])roportionately long, rather triangular, quite acute cephalad. 



