i 



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32 MISC. PUBLICATION 4 2 4, U. S. DEPT. OF AGRICULTURE 



Key to Larvae — Continued 



73. (70) A total of 1-23 dorsal 8-shaped pores 74 



jl ' A total of 35-44 dorsal 8-shaped pores 75 



74. Fifth antennal segment with 1 seta ; a pair of submarginal 



8-shaped pores between antennae 



■ i conspicuum Brain, p. 69. 



i' 11 "" !| ' Fifth antennal segment without setae ; no submarginal 8-shaped 



pores between antennae agavis, new species, p. 40. 



75. (73) Six or 7 pairs of submarginal 8-shaped pores, none of which are 



between the antennae 76 



Eight pairs of submarginal 8-shaped pores, of which 1 pair is 



between the antennae 77 



76. Six pairs of submarginal 8-shaped pores ; 1 pair of setae between 



antennae and month ^aTts-grandicuhim, new species, p. 100. 

 Seven pairs of submarginal 8-shaped pores ; 2 pairs of setae 

 between antennae and mouth parts 



cristatum Ferris, p. 74. 



77. (75) Dorsal 8-shaped pores of practically the same size as marginal 



pores of same segments ; anterior margin of body with 4 



pairs of setae townsendi Cockerell, p. 207. 



Dorsal 8-shaped pores distinctly smaller than marginal pores of 

 same segments ; anterior margin of body with 3 pairs of 

 setae viridulum Cockerell, p. 223. 



78. (62) Apex of abdomen with 6 pairs of setae. Not known to occur 

 on Bambuseae 79 



Apex of nbdomen with 4 pairs of setae. Some species occurring 



on Bambuseae 93 



79. Without a pair of minute setae close to each of the posterior 3 



or 4 pairs of marginal 8-shaped pores 80 



With a pair of minute setae close to each of the posterior 3 



or 4 pairs of marginal 8-shaped pores 85 



80. Anterior and posterior spiracles each with 1 pore 81 



Anterior and posterior spiracles each with 2 pores 82 



81. Axis of the posterior pair of marginal 8-shaped pores trans- 



verse to body margin, axes of other pores diagonal or 

 i longitudinal ; 44-48 dorsal 8-shaped pores arranged in a 



submedian row of 9 or 10 and a submarginal row of 13 or 

 14 on each half of body, the submarginal row so close to 

 marginal as to appear almost as a second marginal row ; 

 6 pairs of submarginal 8-shaped pores, none of which are 



between the antennae euryopis Fuller, p. 88. 



Axes of the posterior 6 pairs of marginal 8-shaped pores trans- 

 verse to body margin, axes of other pores longitudinal ; 

 about 34 dorsal 8-shaped pores arranged in a submedian 

 row of 7 or 8 and a lateral row of 9 on each half of 

 body, lateral row not close to marginal ; 10 pairs of submar- 

 ginal 8-shaped pores, of which 1 pair is between the 

 antennae javae, new species, p. 116. 



82. (80) Fourth and fifth antennal segments each with 1 seta ; sixth 



antennal segment with 4 long setae 83 



Fourth antennal segment without setae and fifth with 1, or 

 fourth segment with 1 seta and fifth with none; sixth 

 antennal segment with 2 long setae 84 



83. Femur with 3 setae, tarsus with 2; penultimate segment of 



body with 2 pairs of submarginal setae 



quaesitum, new species, p. 171. 

 Femur with 2 setae, tarsus with 3 ; penultimate segment of 

 body with 1 pair of submarginal setae 



striatum, new species, p. 198. 



84. (82) Fourth antennal segment without setae, fifth with 1; anterior 



and middle coxae each with 4 setae, but posterior coxa with 

 only 3 ; 10 pairs of submarginal 8-shaped pores 



pustulous (Cockerell), p. 165. 



Fourth antennal segment with 1 seta, fifth with none; each 



coxa with 4 setae ; 8 pairs of submarginal 8-shaped pores 



euphorbiae, new species, p. 87. 





iliJiill 



