IDENTIFICATION OF ROCKY MOUNTAIN COCCID.E 1 93 



On Larrea in the Mesilla Valley, N. M.; antennae 7-jointed; much less spiny than 

 tinsleyi, and with smaller spines .... larrea, parrott and ckll. 

 Notes. — Prof. Tinsley has described the male of E. tinsleyi in Canadian Entomologist, 

 Dec, 1898, p. 317. 



E. kemptoni, Parrott, found on Andropogon in Kansas, may be expected in the plains 

 region of Colorado. 



E. toumeyi (Ckll.), described as a variety of E. qnercus,is a form with a very long tibia, 

 found on Prosopis velutina in Arizona. 



GYMNOCOCCUS, douglas 

 More or less pyriform, 6 mm. long and about 4 broad, soft, slightly pruinose, dull 

 terra-cotta red; antennas 7-jointed (on grass, New Mexico) 



ruber, parrott and ckll. 

 Note. — Another species, G. nativus, Parrott, occurs on grass in Kansas. It is of the 

 color of ruber, but the adult female is only half the size. 



Pseudococcini 



Adult female without legs ...... Antonina, signoret 



Adult female with well-developed legs ........ 1 



1. Antenna; o(rarely 8) -jointed in adult female; claw with a denticle on inner side 2 

 Antennae 8(sometimes 7)-jointed; claw simple ...... 3 



Antenna; not more than 7-jointed; usually in ants' nests ..... 4 



2. Female of the normal "mealy-bug" type, or rarely hemispherical Phenacoccus, ckll. 

 Female large, with a spiny skin, and usually with Orthezia-hke waxy lamellae 



Ceroputo, sulc. 



3. Body oval, usually with cottony tassels . . . Pseudococcus, westw. 

 Body subglobular, enclosed in a cottony sac .... Erium, Crawford 



4. Antennae normally placed ....... Ripersia, signoret 



Antennae close together at the extreme anterior part of the head Ripersiella, tlnsley 



ANTONINA, signoret 



Female in a globular sac, 3 mm. diameter (on grass, northern New Mexico) 



parrotti, ckll. 

 Note.— On Bouteloua in Kansas, are found two other species; A. boutelouce, Parrott 

 (distinguished by having the anal orifice deeply invaginated, protected on ventral surface 

 by a chitinous plate), and A. nortoni, Parrott and Ckll. (having the antennae with not 

 more than three joints, while those of parrotti have four or five). A. parrotti occurs on 

 Eragrostis, Bulbilis, and Paspalum. 



PHENACOCCUS, ckll. 



On Cevallia sinuata in New Mexico; female 4 to 5 mm. long, pale olive green, covered 

 with white secretion, with lateral tassels and two thick caudal ones; second joint 

 of antennae much the longest ....... cevallia, ckll. 



On Amelanchier in Colorado; second and third antennal joints equal or subequal in 



length .......... cockerelli, king 



