THE SCALE INSECT GEXUS ASTEROLECAXIUM 38 



Key to Larvae — Continued 

 85. '79) Anterior and posterior spiracles each with 2 pores 86 



Anterior and posterior spiracles each with 1 pore 



86. A total of about 20 dorsal 8-shaped pores, arranged in a sub- 



median row on each half of body ; 7 pairs of submarginal 

 8-shaped pores 87 



A total of about 46 dorsal 8-shaped pores, arranged in a sub- 

 median and a lateral or submarginal row on each half of 

 body: 9 pairs of submarginal 8-shaped pores 88 



87. Dorsal 8-shaped pores slightly larger than marginal pores of 



same segments stentae Brain, p. 196. 



Dorsal 8-shaped pores of same size as marginal pores of same 

 segments afabidis (Signoret), p. 44. 



88. (86) Anterior margin of body with 3 pairs of setae; 2 pairs of setae 



between antennae and mouth parts 



brachplena& Brain, p. 55. 

 Anterior margin of body with 4 pairs of setae ; 3 pairs of setae 

 between antennae and mouth parts 



thespesiae Green, p. 205. 



89. (85) A pair of minute setae close to each of the posterior 3 pairs of 



marginal 8-shaped pores (rarely 2 setae on 1 side of body 



and 3 od the other) 90 



A pair of minute setae close to each of the posterior 4 pairs of 

 marginal 8-shaped pores (rarely 3 setae on 1 side of body 

 and 4 on the other) 91 



90. Seven pairs of submarginal 8-shaped pores ; apical setae about 



125 fi long aXgeriense (Xewstead), p. 42. 



Usually 6. rarely 5. pairs of submarginal 8-shaped pores : apical 

 setae 100-lOS //. long nevadense Balachowsky, p. 138. 



91. (89) Eight pairs of submarginal 8-shaped pores 



fimhriatum (Fonscolombe) , p. 91. 

 Seven pairs of submarginal 8-shaped pores 92 



92. With 16-20 dorsal 8-shaped pores ; apical setae about 135 fi long ; 



interapical setae 36-41 /j. long 



zarithenes, new species, p. 227. 

 Without dorsal 8-shaped pores : apical setae about 120 n long ; 

 interapical setae about 32 (j. long 



launeae, new species, p. 119. 



93. (78) Anterior spiracle with 1 pore, posterior with 1 94 



Anterior spiracle with 1 or 2 pores, posterior with 2 101 



94. Anal ring with more than 2 pores : anal ring setae 12-18 n long 95 



Anal ring without pores or with 2 : anal ring setae 2-8 p. long 97 



95. Fifth antennal segment with 1 sera : femur and tarsus each 



with 2 setae ; about 16 dorsal 8-shaped pores ; apical setae 



about 36 \x long acutulum, new species, p. 38. 



Fifth antennal segment without setae: femur with 2 or 3 

 setae, tarsus with 3 : fewer or more than 16 dorsal 8- 

 shaped pores ; apical setae at least 45 a long 96 



96. Axes of all marginal 8-shaped pores longitudinal to body mar- 



gin ; femur with 3 setae ; about 7 dorsal 8-shaped pores 



chinae, new species, p. 65. 

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

 verse To body margin, axes of others longitudinal ; femur 

 with 2 setae ; about 22 dorsal 8-shaped pores 



fusum, new species, p. 95. 



97. (94) Fifth antennal segment without setae 



Fifth antennal segment with 1 seta ( .".» 



98. Without dorsal 8-shaped pores; apical setae about 72 u long 



notabile, new species, p. 1 10. 



With about 14 dorsal 8-shaped pores: apical setae about 54 



fi long oblongum, new species, p. 142. 



99. (97) Two pairs of setae near antennae (1 pair anterior to antennae 



and 1 pair between antennae and mouth parts); largest 

 dorsal 8-shaped pores slightly -mailer than marginal p< i - 



Of same segment brunetae, new species, p " s 



286720—41 3 



