IDENTIFICATION OF ROCKY MOUNTAIN COCCIDJS 



197 



Antertnal Joints 



R. sporoboli 



R. porterae 



R. fimbriatula 



R. salmonacea 



R. aurantia 



R. vtridula 



R. magna 



R. magna (6-jointed form) . 



R. tenuipes 



R. flaveola 



R. flaveola (6-jointed form). 



R. cockerellae 



R. trichura 



R. trivittata 



R. confusella 



24-30 



35-39 

 40 

 42 



33 

 36 

 39 

 42 

 3° 

 3 6 ~39 

 40 



30 



39-45 



3° 



33 



27 



39 

 40 

 42 

 39 

 33 

 42 



39 



24 



42 



40-44 



3° 



33-36 



3° 



30 



24-30 



42-45 

 56 



3° 

 48 



3° 

 27 

 5i 

 24 



42-45 

 44 

 18 



30-42 

 3° 

 45 



18 

 24-27 



20 



3° 

 18 



3° 

 24-30 



18 



24-25 



36 



32 



33 



25-27 



18-24 



21 



21-27 



33-36 



32 



3° 



3° 



24 

 21-23 



3°~33 

 28-32 

 21 

 3° 

 24 

 27 



45-5i 



60-66 



76 



35 

 80 



27 



27-30 



60 



24 



33-36 



72-80 



27 



60 



72 

 60 



78-84 



60 

 63-66 



60-69 

 75-84 



"63' 



The measurements of the 6-jointed R. flaveola were made by Mr. G. B. King. 

 RIPERSIELLA, tinsley. 



Female about 3 mm. long, elongated, perfectly white; antennae 6-jointed (Las Vegas, 



N. M., and recently found by W. P. Cockerell, at Boulder, Colo.) . leucosoma, ckll. 



COCCINiE 



Tribes 

 Adult female naked, legless, terminal segments pygidiform, anal operculum of a 



single undivided plate ......... Aclerdini 



Adult female with the posterior extremity cleft; anal orifice closed by a pair of plates, 



usually triangular in form ........ Coccini 



Aclerdini 

 ACLERDA, signoret 

 Adult female brown, 2 to 5 mm. long; no antennae (at the bases of grass-stems, 



northern New Mexico) ...... calijornica (ehrhoen) 



Note. — Another species, A. obscura (Parrott) occurs on grass in Kansas. It is dis- 

 tinguished from calijornica "by the absence of the row of thick blunt spines on margin 

 and by the presence of very chitinous spine-like glands on the margin of the posterior 

 segment." (Parrott.) 



Coccini 



Secretion of female like cotton or felt, forming a white ovisac . . . Series I 



Secretion of female like wax or glass, covering the insect, not forming an ovisac Series II 

 Female naked, or covered only with a film of secretion .... Series III 



