98 MISC. PUBLICATION 42 4, U. S. DEPT. OF AGRICULTURE 



concave or convex ventrally ; light brownish yellow, translucent to opaque, appar- 

 ently slightly punctate'; marginal filaments rubbed off ; elliptical larval exit in 

 ventral surface of produced area. 



Adult female. — Broadly ovoid, posterior end narrowed and produced; 1 mm. 

 long, 0.55 wide. 



Margin : 8-shaped pores in a single row terminating around eight times a pore's 

 length from bases of apical setae, 10-12 /* long and 7 wide, around a pore's width 

 apart normally ; quinquelocular pores in a single to quadruple row terminating 

 posterior to the 8-shaped pores and close to produced area of abdomen, the row 

 normally single between antennae, double, then triple or quadruple from well 

 anterior to anterior spiracular pore bands to near the posterior 8-shaped pores, 

 and irregularly single or double from there to end of row, sometimes lacking, or 

 reduced in number if corresponding 8-shaped pores have dropped out ; disk pores 

 dorsad of 8-shaped pores, terminating close to median line at posterior end, 1 

 near each 8-shaped pore and occurring at the same intervals posterior to 

 8-shaped pores, usually reduced in number if some 8-shaped pores have dropped 

 out. 



Dorsal surface : Minute 8-shaped pores fairly numerous in lateral and sub- 

 marginal areas ; disk pores fairly numerous in lateral and submarginal areas 

 and a few in median area near posterior end ; tubular ducts absent along median 

 line, scattered elsewhere, 32 /x long; dorsal tubes present. 



Ventral surface : Antenna rough, irregular, dome-shaped, with 2 setae as long 

 as diameter of antenna and 2 or 3 much shorter ; beak without setae ; spiracular 

 bar subcircular, atrium slightly enlarged and containing quinquelocular pores, 

 pores extending from atrium over opening of spiracle and continuing to body 

 margin in a row 6-8 pores wide, a total of 75-100 pores in atrium and row 

 combined; 5-8 dark-rimmed 8-shaped pores each side of mouth parts, a few 

 anterior to mouth parts, and others arranged in 5 or 6 transverse rows in 

 median and lateral (or only in lateral) area of abdomen; submarginal 8-shaped 

 pores absent ; disk pores scattered on anterior end, arranged in 7 transverse 

 rows on the abdomen in the position usually occupied by the multilocular pores, 

 and in a submarginal row terminating close to median line, disk pores in sub- 

 marginal row much less numerous than marginal 8-shaped pores ; 8 pairs of 

 submarginal setae posterior to anterior spiracles, the posterior pair well anterior 

 to apical seta ; 1 pair of setae in each of the posterior 3 rows of disk pores. 



Apex of abdomen: Setae, apical 7.2 n long, interapical (on ventral surface 

 close to margin) 3 /* long, inner and outer ventral each 3.6 ix long; anal opening 

 ventral, well removed from margin, small, circular, its margin membranous ; 

 anal tube funnel-shaped, small at opening and large at inner end, lightly 

 sclerotized close to anal ring, heavily sclerotized elsewhere ; anal ring with 6 

 setae 1.8 /* long. 



Larva. — Elliptical. 



Margin : With 28 8-shaped pores, the posterior pair slightly larger than the 

 others, axes of all longitudinal ; 3 pairs of setae at anterior end. 



Dorsal surface : 8-shaped pores in a submedian row of 5-10 on each half of 

 body, uniform in size if in a row of 7 or less, the anterior 3 pores larger than the 

 others if in a row of 10, larger pores seven-eighths, smaller pores about two- 

 thirds, the size of marginal pores of same segments ; disk pores close to marginal 

 8-shaped pores, and a few in lateral area. 



Ventral surface: Antennal setae, I, 2; IV, 1; V, 0; VI, 2 long, 2 stout, 3 

 fairly stout, 1 slender ; bases of antennae one-third length of antenna apart ; 

 beak setae, 2 pairs apical, 1 pair median ; spiracle with 1 trilocular and 1 quin- 

 quelocular pore ; leg setae, coxa 4, femur 1 on inner margin near base and 1 

 each on inner and outer margins near center, tarsus 2 on inner and 1 on outer 

 margin ; tibia one-half as long as tarsus ; apparently 8 pairs of submarginal 

 8-shaped pores, of which 1 pair is between the antennae ; 8 pairs of submarginal 

 minute setae, on abdomen and thorax, 3 pairs of submarginal larger setae at 

 anterior end ; 1 pair of setae between antennae and mouth parts. 



Apex of abdomen : Setae, apical 36 n long, interapical 7.2 /n long, inner ventral 

 2 fi long, outer ventral 3.6 fi long; anal opening in ventral surface and margin, 

 longitudinally elongate, its margin sclerotized ; anal tube rather short and 

 bulbous, heavily sclerotized throughout ; anal ring with 6 setae 4 fi long ; ventral 

 surface of apex membranous, slightly rugose. 



Data. — Described from unmounted material, 4 mounted females, 

 and 50 mounted larvae on Schizostachyvmi sp., Bikal, Philippine 

 Islands, F. A. McClure, October 1925, holotype and paratypes. 



