200 Philippine Journal of Science 1919 



Megatrioza robusta sp. nov. 



Length of body, 3 millimeters; forewing, 5.1. General color 

 brown and dull yellow ; pronotum brown ; meso- and metanotum 

 alternating brown and dull yellow streaks; abdomen mostly 

 brown; legs and antennae yellowish, latter brown at tip; fore- 

 wings clear, with a small black spot on anal angle. 



Head considerably narrower than thorax, declivous; vertex 

 sparsely hirsute, about half as long as. broad, front and hind 

 margins subparallel, arcuate forward, with a foveal depression 

 on each side of median line. Genal cones nearly or quite as 

 long as vertex, slightly declivous, broad at base, subacutely 

 pointed. Antennae scarcely twice as long as width of head. 



Thorax very broad and robust, sparsely hairy, finely impunc- 

 tate; legs rather short and stout; hind tibiae with small spurs 

 at base, apical and subapical spines moderately large. Fore- 

 wings large, clear, acutely pointed. Hind wings about half as 

 long as forewings, narrow. 



Abdomen short and thick. Female genital segment short, dor- 

 sal valve a little longer than ventral, both subacute. 

 Luzon, Mount Banahao (Baker), 1 female. 



Megatrioza melanoneura sp. nov. 



Length of body, 3 millimeters; forewing, 5. General color 

 dark brown to black ; vertex, genae, thoracic pieurae, hind tibiae, 

 and antennae all dull reddish yellow; antennae and hind tibiae 

 black distad; forewings clear, with a black spot on anal angle 

 and a black band following basal vein along radius to costal 

 margin. 



Head narrower than thorax, declivous. Vertex about half as 

 long as broad, sparsely hairy, bulging roundly in front, with a 

 transverse depression extending from in front of posterior ocelli 

 arcuately toward occipital margin of head. Genal cones decli- 

 vous, about half as long as vertex, bluntly rounded, hairy. An- 

 tennae about one and one-half times as long as width of head. 



Thorax broad, well arched, sparsely hairy. Legs thick, very 

 hairy; hind tibiae with small basal spur, a moderately large 

 subapical spine and two apical spines. Forewings large, trans- 

 parent, veins narrow and black ; basal and radial veins conspic- 

 uous by the black border. Hind wings about half as long as 

 forewings. 



Abdomen large and thick. Male forceps about as long as anal 

 valve, slender, arched and subacutely pointed. Anal valve mod- 

 erately long, about one-third as broad at base as long, nar- 



