TABLES FOR THE IDENTIFICATION OF ROCKY 

 MOUNTAIN COCCIDiE (Scale Insects and Mealy- 

 bugs) 



By T. D. A. Cockerell 



SUBFAMILIES 



Males with compound eyes .......... i 



Males with simple eyes . . . . . ... . . . .3 



1. Anal ring of female with hairs ORTHEZIINiE 



Anal ring of female hairless ......... 2 



2. Mouth -parts present in adult female; legs present in all stages MONOPHLEBIN/E 

 Mouth-parts absent in adult female ; legs absent in intermediate stage of female 



MARGARODIN.E 



3. Abdomen of female terminating in a compound segment or plate; anal orifice 



hairless; adult without legs; scale composed partly of the exuviae . DIASPIN^E 

 Abdomen of female not so terminating ....... 4 



4. Insects enclosed in a resinous cell with three orifices; adult female apodous, with 



the terminal segments produced into a tail-like organ, bearing at the extremity 

 the anal orifice; a prominent spine-like organ usually present above the base 



of the caudal extension TACHARDIIN/E 



Not so ............. 5 



5. Females with the posterior extremity cleft; anal orifice closed above by a pair of 



triangular plates (these united in Aclerda) ..... COCCIN^E 

 Not so; triangular anal plates absent DACTYLOPIIN^E 



ORTHEZIIN^ 



Female antenna; 8(rarely 7)-jointed ..... Orthezia, bosc. 



ORTHEZIA, bosc. (Females) 



Secretion dense, not easily removed; a series of three imbricated lamellae in the 

 middle line of the back; species of the higher mountains, in the Canadian zone 

 (Colorado and New Mexico) . (subg. Arctorthezia, ckll.) occidentalis, DOUGLAS. 



Secretion less dense, much more easily removed; no imbricated mid-dorsal 

 lamellae (subg. Orthezia, s. str.) ........ 1 



Species found in nests of ants of the genus Lasius; color of body orange; antennae 

 (so far as observed) only 7-jointed (Las Vegas and Gallinas Canon, N. M.) 



. lasiorum, CKLL. 



Species not, or not normally, occurring in nests of ants; antennae always 8-jointed 2 



189 



