78 THE COCCIDAE 



b. Antennae with nine segments. 



c. Abdomen with eight pairs of spiracles. Paragreenia MacG. 



cc. Abdomen with less than eight pairs of spiracles. 



d. Abdomen with seven pairs of spiracles; all nymphal stages 

 known, normal in form. Americoccus MacG. 



dd. Abdomen with four cephalic segments with pairs of spiracles. 



Kuwania Ckll. 

 bb. Antennae with less than nine segments. 



c. Antennae with eight segments; abdomen with spiracles on seg- 

 ments one to six; nymphal female of first stage not with femur 



of each leg enlarged and elongated Steingelia Nassanow. 



cc. Antennae with seven segments; abdomen with spiracles on 

 segments one to six; adult female with rostrum and rostralis 



present. Stomacoccus Ferris. 



Matsucoccus Ckll. A single species matsumurae Kuwana from 

 Japan on pine-tree (matsu), is known. The adult female has a swollen 

 body which is ovate in outline. When ready to deposit her eggs, the 

 female seeks a crack or crevice in the bark, where she forms a cottony 

 cushion of wax upon which she rests and covers her body with a con- 

 siderable amount of white cottony wax. The nymphs of the first stage 

 have the body similar in form to that of the adult female, but the legs 

 have a peculiar crab-like appearance due to the swollen and elongate 

 femora and the short and slender tibiae and tarsi. The antennae of this 

 stage, which consist of seven segments, are peculiar in form. Segments 

 two, four, and six are subequal in length as are segments three, five, and 

 seven, but the segments of the last group are only about one-third the 

 length of the segments of the first group. 



Paragreenia MacG. Green has described a single species, zeylanica, 

 from Ceylon on Antidesma. The complete description of this species has 

 not been published. The body of the adult female is long and narrow and 

 the female nymphs of the second stage are found in small cavities in the 

 living tissue of the plant. The adult female according to Ferris has well 

 developed mouth-parts with a distinct mentum and six to eight pairs of 

 abdominal spiracles. If this species has mouth-parts, rostrum and ros- 

 tralis, in the adult female, this genus should be referred to the Monophle- 

 binae. 



Americoccus MacG. There is a single described species, fascic- 

 uleusis Herbert, from California on Pinus. The adult female has trans- 

 versely striated antennae, the proximal segments are large. The claws 

 are simple with two ungual digitules. The thoracic spiracles are large 

 and distinct. The dorsum is provided with transverse rows of simple 

 cerores and the dorsum and venter with cerores similar to the octa- 

 cerores. The ocellanae, one on each side of the head, are present. The 

 mouth-parts are sometimes present. The distance between the prothoracic 

 and mesothoracic legs in the first nymphal female is nearly three times 

 that between the mesothoracic and metathoracic legs. The rostrum is 

 shown between the latter pairs of legs. 



Kuwania Ckll. Kuwana has recorded a single species, quercus 

 Kuwana, from Japan on Quercus. This genus, as here limited, contains 



