THE SCALE INSECT GENUS ASTEROLECANIUM 



29 



Key to Larvae — Continued 



33. (30) Eight pairs of subinarginal 8-shaped pores; apex of abdomen 



apparently without ventral setae 



roborix, new species, p. 177. 

 Nine pairs of submarginal 8-shaped pores; apex of abdomen 



with 1 pair of ventral setae .".4 



34. Posterior spiracle without pores 35 



Posterior spiracle with 1 or 2 pores 3<> 



35. Two pairs of setae between antennae and mouth parts 



semtsepultum, new species, p. 186. 

 Three pairs of setae between antennae and mouth parts 



nit idum, new species, p. 130. 



36. (34) Posterior spiracle with 2 pores 37 



Posterior spiracle with 1 pore 39 



37. Twenty-two to 28 dorsal 8-shaped pores, the largest of practi- 



cally the same size as posterior marginal pores ; apical 



setae about 65 jx long japonicum Cockerell, p. 114. 



Usually fewer than 22 or more than 28 dorsal 8-shaped pores, 

 the largest slightly larger than posterior marginal pores; 

 apical setae less than 65 /x long ."> s 



38. Two pairs of setae between antennae and mouth parts 



luteolum, new species, p. 124. 

 Three pairs of setae between antennae and mouth parts 



variabile, new species, p. 217. 



39. (36) Anal ring without setae 40 



Anal ring with setae 41 



40. Largest dorsal 8-shaped pores about two-thirds the size of 



posterior marginal 8-shaped pores 



castaneae, new species, p. 59. 

 Largest dorsal 8-shaped pores about one-half the size of 

 posterior marginal 8-shaped pores 



pasa niac Kuwana and Cockerell, p. 149. 



41. (39) Usually without but rarely with 1-3 dorsal 8-shaped pores 



variolo.su hi (Ratzeburg), p. 218. 

 With at least 20 dorsal 8-shaped pores 41' 



42. Apical setae at least 50 /x long 43 



Apical setae less than 50 /x long 45 



43. Beak with 2 pairs of setae ; apical setae about 72 /x long 



perplexum, new species, p. 151. 

 Beak with 3 pairs of setae; apical setae less than 70 /x long__ 44 



44. Apical setae about 54 /x long; normally 20-30 (usually about 



30) dorsal 8-shaped pores minus Lindinger, p. 132. 



Apical setae about 66 \x long; fewer than 25 dorsal 8-shaped 

 pores qucrcicohi (Bouche), p. 173. 



45. (42) Apical setae about 32 /x long; dorsal 8-shaped pores varying 



in size horishac, new species, p. 106. 



Apical setae at least 40 /x long; all dorsal 8-shaped pores rather 

 small, no longer or only slightly longer than the width 

 of marginal 8-shaped pores 46 



46. Two pairs of setae between antennae and mouth parts; dorsal 



8-shaped pores slightly longer near anterior than posterior 

 end of row and slightly longer than the width of marginal 



8-shaped pores castaneae, new species, p. 59. 



Three pairs of setae between antennae and mouth parts ; dorsal 

 8-shaped pores practically uniform in size and about ;i^ 

 long as the width of marginal 8-shaped pores __ 47 



47. Bases of antennae one-third length of antenna apart 7 



skanianae, new species, p. 191. 

 Bases of antennae one-half length of antenna apart : 



suishae, new species, p. 203. 



7 The character used in separating the larvae of skanianae and suishae is not very 

 satisfactory since the space between the bases compared with the length of the antenna 

 varies very slightly and the difference between the comparative lengths of the two in 

 these species is so small that it cannot be relied on completely, larvae of these two 

 species appear to be practically identical. 



