204 THE COCCIDAE 



GENERA OF APIOMORPH1NAE 



a. Adult female with at least one pair of legs. 



b. Adult female with three pairs of legs and rudimentary antennae 

 of three to five segments; abdomen elongate, longer than head 

 and thorax together, distinctly segmented; body tapering or pear- 

 shaped. Apiomorpha Rubs. 



bb. Adult female with prothoracic legs wanting, mesothoracic vesti- 

 gial, and metathoracic legs very long and slender; antennae pres- 

 ent and vestigial, consisting of three to four segments or want- 

 ing. Opisthoscelis Schrader. 



aa. Adult female without legs or antennae; abdomen very short, much 

 shorter than either head or thorax, segmentation obsolete, head and 

 thorax globular, abdomen appearing as tubercle upon one side of 

 globule. 



b. Body not longitudinally striate, globular but not with cephalic end 



truncate; spiracles present. Ascelis Schrader. 



bb. Body longitudinally striate, globular with cephalic end truncate; 

 thoracic spiracles large Cystococcus Fuller. 



Apiomorpha Bubs. This name was proposed by Riibsamen for 

 the genus Brachyscelis Schrader, which was preoccupied. By far the 

 larger number of species of the subfamily belong to this genus. There 

 are thirty species listed by Mrs. Fernald. 



Opisthoscelis Schrader. A genus of twelve species, all of which 

 produce galls upon Eucalyptus. 



Ascelis Schrader. The adult females of this genus are greatly 

 modified. There are four species described. 



Cystococcus Fuller. This genus was erected by Fuller to include 

 his species echiniformis which forms a spherical gall from three-fourths 

 to one inch in diameter. There is some question as to whether this 

 genus can be distinguished from Ascelis. The walls of the gall are thin 

 and uniform in thickness. The body of the female nearly fills the cav- 

 ity in the gall. These galls according to Fuller are not only edible but 

 are considered as a great delicacy by all the natives and all whites who 

 know of them. The galls are broken between the teeth and the insect 

 sucked out. They are considered as cool and refreshing on a hot day. 

 Unless better characters are discovered than have been noted, the genus 

 Cystococcus will fall as a synonym of Ascelis which has the thorax glob- 

 ular and the abdomen a mere protuberance on one side. 



