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



Larva. — Elongate elliptical. 



Margin: With 28 8-shaped pores, anterior pore one-fourth larger than the 

 others, axes of the posterior 6 pairs of pores diagonal, of the others longitudinal ; 

 3 pairs of setae anteriorly. 



Dorsal surface : Disk pores in lateral area and a few in submarginal area. 



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

 stout, 1 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 one-half as long as tarsus ; 9 

 pairs of submarginal 8-shaped pores ; 6 pairs of submarginal minute setae on 

 abdomen, 3 pairs of submarginal larger setae anteriorly ; 1 pair of setae between 

 antennae and mouth parts. 



Apex of abdomen : Notch present ; setae, apical 36 /j. long, interapical 9 y, long, 

 inner ventral 5.4 fi long, outer ventral 4 fi long ; anal ring with 6 setae, each about 

 12.6 ix long, and with an inner row of 6 and an outer row of 12 or 13 pores, 

 divided on dorsal side. 



Test of male. — Nearly elongate elliptical, but somewhat pointed at posterior 

 end and with a notch in posterior margin; 1 mm. long, 0.4-0.5 wide; slightly 

 convex dorsally, particularly near anterior end, with a faint longitudinal median 

 carina often disappearing near anterior margin, flat ventrally ; pale greenish 

 yellow, transparent, very thin, finely punctate; marginal filaments colorless to 

 pale greenish yellow, sparse ; dorsal filaments not observed. 



Adult male. — 0.8 mm. long. 



Head: Antenna 10-segmented ; formula (longest to shortest), (III), (IV, VII, 

 X), (V, VI, VIII, IX), (I), (II) ; antennal setae, I-V, 12-15; VI, 18; VII, 20 (1 

 or 2 of which may be stout) ; VIII, 18; IX, 20; X, 1 very long (probably others 

 broken ) , 3 stout, and 17 slender ; basal bars diagonal ; 16 setae between ventral 

 eyespots and antennae. 



Thorax : Bar between wing bases rectangular, two and a half times as long as 

 wide; tibia slightly shorter than tarsus. 



Abdomen : Four or five segments each with a pair of setae dorsally on lateral 

 margin ; 2 segments each with a pair of setae in ventral lateral area ; lobes 

 indicated, each with 1 long and 3 short setae; penis sheath with 3 or 4 setae 

 dorsally near base, and 5 or 6 on each side of ventral opening. 



Male nymph. — Distinguishing characters similar to those of adult male. 



Third-stage male. — Nearly elliptical, posterior third tapering; margin with 

 8-shaped pores terminating one-half the length to the length of apical seta from 

 setal bases, usually one to two times a pore's length apart ; dorsal surface with 

 0-14 8-shaped pores in submarginal area ; ventral surface with 1 quinquelocular 

 pore outside spiracle, legs represented by 3 pairs of very small, inconspicuous, 

 circular areas, 5 pairs of submarginal setae on abdomen, and 1 pair of setae 

 in median area ; apex of abdomen as in adult female, but all setae about one- 

 fourth shorter. 



Data. — Redescribed from unmounted material and mounted speci- 

 mens consisting of 2 females and 2 adult males on Bambusa sp., Sao 

 Paulo, Brazil, J. Melzer, from E. E. Green, types; 66 adult females, 1 

 second-stage specimen, 85 larvae, 2 adult males, 1 male nymph, and 5 

 third-stage males, all on Bambusa, unless otherwise indicated, the data 

 for these being as follows: B. vulgaris, Brazil, P. H. Dorsett, U. S. 

 N. H. ; B. flexuosa. Ding Bang, between Hanoi and Boi, Indo-China, 

 May 3, 1891, U. S. N. H.; B. pattescens, Sao Paulo, Brazil, J. Barbosa, 

 1907?, U. S. N". H.; B. pattescens var. usteri, Sao Paulo, Brazil, April 

 5, 1907, U. S. N. H. : B. pattescens, Botanic Gardens, Sao Paulo, Brazil, 

 J. Barbosa, May 1907, U. S. N. H. ; B. pattescens, Rio de Janeiro, Brazil, 

 P. H. Dorsett, October 26, 1913, U. S. N. H. ; B. pattescens, Santos, Bra- 

 zil, H. M. Curran, 1915, TJ. S. N. H. ; B. pattescens, Botanic Gardens 

 near Rio de Janeiro, Brazil, H. M. Curran, November 1915, U. S. N. H. ; 

 Bambusa (Guadua) sp., Botanic Gardens near Rio de Janeiro, Brazil, 

 H. M. Curran, November 1915, U. S. N. H. ; Dendrocalamus sp., Sai Lin, 

 Kwangtung, China, F. A. McClure, January 21, 1925; B. pattescens, 



