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 browrn to black; vertex, gense, thoracic pleurae, hind tibiae, 
and antennae all dull reddish yellow r ; 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- 
