396 The Philippine Journal of Science im 



bears two broad purplish brown bands, which lie close to the 

 lateral margins in such a manner as to inclose a nearly hexagonal 

 orange yellow area. The metathorax is marked on its side with 

 an oblique dark brownish streak. Legs rather long, slender, and 

 very hairy; tibiae very long and nearly twice as long as the 

 femur and bearing a single spine at its distal end; claw long 

 and simple, two pairs of prominent knobbed digitules. The 

 measurements of the different parts of the hind leg are : Coxa, 

 196 /*; trochanter plus femur, 399 {x.; tibia, 756 n\ tarsus, 234 

 jx\ claw, 51 /a. Wings nearly transparent, with costal margin 

 light brown and slightly iridescent; a single vein is present, 

 which begins at the base of the wing and very soon branches, 

 one branch paralleling the costal margin and the other extend- 

 ing toward the anal distal margin. The club-shaped halteres 

 are brownish, and each bears three hooks, which catch in a 

 pocket on the anal margin of the wing. 



The abdomen terminates in a pointed style consisting of two 

 long white wax filaments, one arising on each side of the eighth 

 abdominal segment and extending posteriorly. Each of the 

 filaments arises from a number of pores with short spiny hairs 

 and two longer ones, the long hairs being enveloped by the wax 

 filament. 



The egg. — The eggs are elongate-oval, 0.43 millimeter in length 

 and 0.22 in width. Some are very pale yellow, while others 

 have a slight brownish shade; that is to say, they are slightly 

 deeper in color. The lighter ones produce male larvae and the 

 darker, female. 



The first-stage larva, female. — The body is long-oval in form 

 (Plate 2, fig. 4) , widest in the thoracic region, gradually narrow- 

 ing toward the caudal end, and nearly flat. Pale brownish 

 orange, with the median line dark, the antennae and legs pale, 

 and the eyes dark brown. Length, 0.60 millimeter ; width, 0.36. 



After becoming attached to the host the body becomes pale 

 orange gray with white spots at the thoracic incisions, and 

 toward the end of this stage the dorsum becomes more or less 

 convex. Antennae and legs are comparatively large and slender. 

 The antennae consist of six joints, 4 each joint bearing a few 

 long hairs, these being most numerous on the apical joint ; joint 



