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



near the penultimate pair of 8-shaped pores, irregularly spaced and not more than 

 half as numerous as 8-shaped nores. 



Dorsal surface: 8-shaped pores totaling 3-30 (usually 12-20), confined to 

 median area, or 16-30 additional pores in submarginal and lateral areas, these 

 pores in rather indefinite groups or in inconspicuous transverse rows ; majority 

 of pores 16-18 fi long and 8 wide; minute 8-shaped pores fairly numerous or 

 rather sparse; disk pores fairly numerous; no tubular ducts among median 

 8-shaped pores but scattered elsewhere, 36 m long ; dorsal tubes present. 



Ventral surface : Antenna circular, flattish, with 2 setae longer and 1 or 2 

 shorter than diameter of antenna ; beak without setae ; spiracular bar subcir- 

 cular ; usually 22-42 quinquelocular pores extending from spiracle to body mar- 

 gin in an irregularly double or triple row ; multilobular pores in 5 complete rows 

 (fifth row usually complete) and 3 or 4 interrupted rows, posterior row with 

 16-28 pores, penultimate with 20-38, next with 24-41, next with 11-20, anterior 

 complete with 8-16, each of interrupted rows with 2-9, a total of 90-154, with 

 6-10 (usually 10) loculi; 5-10 dark-rimmed 8-shaped pores each side of mouth 

 parts, some scattered anterior and lateral to mouth parts, others in a longitudi- 

 nal row about 5 pores wide posterior to posterior spiracles, and a few in median 

 area of abdomen ; submarginal 8-shaped pores usually in a single row terminating 

 about midway between posterior row of multilocular pores and the posterior pair 

 of marginal 8-shaped pores, as numerous as marginal 8-shaped pores ; 7 pairs of 

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

 posterior or penultimate pair of marginal 8-shaped pores; 1 pair of setae in each 

 of the posterior 3 rows of multilocular pores. 



Apex of abdomen : Notch present ; lobes broad ; setae, apical 72-80 (jl long, 

 interapical 8 /* long, inner ventral 5.2 n long, outer ventral 8 i* long ; anal ring 

 with 6 setae 32-36 n long, also with an inner row of 6 and an outer one of 18-20 

 pores ; ventral surface of lobes and margin of body between lobes somewhat 

 sclerotized. 



Second stage. — Resembling adult but smaller and more elongate ; margin with 

 disk pores slightly less numerous than in adult ; dorsal surface with 3 8-shaped 

 pores in median area ; ventral surface with 5 or 6 quinquelocular pores in each 

 spiracular row, no setae observed in median area ; apex of abdomen as in adult 

 but all setae about one- third shorter. 



Larva. — Elliptical or elongate elliptical. 



Margin : With 28 8-shaped pores, the posterior 6 pairs of pores slightly smaller 

 than the next 7, and the anterior pair slightly larger than any others, axes of 

 all pores longitudinal ; 3 pairs of setae anteriorly. 



Dorsal surface : 8-shaper pores in a submedian row of 7-10 on each half of 

 body, with a total of 16-19 observed, the next to anterior pore slightly smaller 

 than marginal pores of same segment, others one-half toi two-thirds size of a 

 posterior marginal pore ; disk pores near marginal 8-shaped pores and a few 

 near dorsal 8-shaped pores. 



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

 stout, 2 slender ; antennal bases one-third length of antenna apart ; beak setae, 

 2 pairs apical, 1 pair median ; anterior spiracle with 1 trilocular pore, posterior 

 spiracle with 1 trilocular and 1 quinquelocular 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 two-thirds as long as tarsus ; 9 

 pairs of submarginal 8-shaped pores ; apparently 8 pairs of submarginal minute 

 setae, on abdomen and thorax, 3 pairs of submarginal larger setae anteriorly; 1 

 pair of setae between antennae and mouth parts. 



Apex of abdomen : Notch very small or absent ; lobes present or absent ; setae, 

 apical 45 jl long, interapical 5.4 /j. long, inner ventral 2 ^ long, outer ventral 2.2 /i 

 long; anal ring with 6 setae, each about 12.6 /* long, also with an inner row 

 of 6 and an outer row of apparently 14 pores, and with a tendency toward division 

 on dorsal and ventral sides. 



Data. — Redescribed from unmounted material, 1 mounted female, 

 and 6 mounted larvae on Bambusa sp., Algeria, determined by Signoret, 

 loaned by M. Beier, presumably type; unmounted material, 8 mounted 

 females, and 2 mounted larvae on bamboo, Botanic Gardens, Grenada, 

 West Indies, W. E. Broadway, November 16, 1895, type of bambusae 

 var. bambusulae; a mass of unmounted material, approximately 600 

 mounted females, several mounted second stage specimens, and sev- 



