22,2 Woodworth and Ashcraft: Booponus intonsus 147 



end rounded and invaginated, with one very small pair of tu- 

 bercles dorsad, another pair ventrad, and a third pair latero- 

 ventrad of the stigmata (Plate 1, fig. 7) . Body grayish white, 

 lateral fusiform areas absent, ventral areas present. Body sur- 

 face covered with irregular rows of short, stout, reclinate, pale 

 brown spines (Plate 1, fig. 6). Head retracted into thorax 

 when at rest, bilobed, with a pair of minute, sometimes faintly 

 pigmented papillae anteriorly and a brown chitinous comb ven- 

 trobasally on each lobe (Plate 1, fig. 8; Plate 3, fig. 1). Oral 

 hooks two, toothed, dark brown to black, and recurved ven- 

 trally (Plate 2, fig. 2). Amphipneustic. Anterior spiracular 

 projections swollen, with tubercular surface, trachea (visible 

 through the projections) with 18-digitate extremities (Plate 1, 

 fig. 5; Plate 3, fig. 1). Posterior stigmal plates on swollen hem- 

 ispherical areas on the sides of the invaginated region of the 

 posterior end of the last abdominal segment (Plate 1, fig. 7). 

 Slits three, subparallel, with serrate edges (Plate 1, figs. 2 and 

 3; Plate 4, fig. 2). Length, 8.5 to 10 millimeters; breadth, 

 2.5 to 3. 



Puparium. — Regularly ellipsoidal, rich chestnut brown to 

 black (Plate 2, fig. 3). Surface finely rugose, with very short 

 recumbent spines except for small bare areas along the seg- 

 mental sutures which serve to accentuate the segmentation. An- 

 terior spiracular projections protruding and tuberculous (Plate 

 2, fig. 4) ; posterior stigmal plates slightly swollen, black, with 

 the same general appearance of the anal stigmata of the full- 

 grown larva. Size variable, average length, 6 to 7 millimeters ; 

 breadth, 2.25 to 2.75. 



Adult. — For description of the adult stage, 2 the reader is re- 

 ferred to the original description of Aldrich (antea, p. 141). 



HABITS 



Oviposition. — Occasionally the adults may be seen hovering 

 around the legs of carabaos and bullocks. They alight on the 

 lower portions of the leg and deposit their eggs on the hairs of 

 the host. A gelatinous material secreted by the female at the 

 time of oviposition serves to attach the egg to the hair (Plate 2, 

 fig. 6) . Almost invariably the eggs are placed head downward. 

 As many as four eggs on one hair have been noted. More com- 

 monly only one egg is found on a single hair, and it is usually 



far 



