THE CANADIAN ENTOMOLOGIST. 209 



NEW COCCID^ FROM NEW MEXICO. 



BY T. D. A. COCKERELL. 



Orthezia lasiorum, n. sp. — 9 • About 2 millira. long ; pale orange ; 

 ovisac (in specimens seen) not very long; two very long median zvhite 

 caudal lamella, about two-thirds length of body, curving over ovisac, but 

 not attached to it. Dorsum covered with waxy secretion, but it is so 

 easily deciduous that I have never found an adult with it sufficiently in 

 place to describe. Middle leg with femur + trochanter 300 /a, tibia 240, 

 tarsus (without claw) 180. Antennae 7-joinled, the last joint with a 

 terminal spine; joints measuring in \i : (i.)75-qo. (2.)'j2-'j^. (3.)84-95. 

 (4-)6o. (5-)48- (6.)45- (7.) 120-129. I have never found one with S joints, 

 though I should expect such to occur. 



Young. — Length of body about 1 millim.; body yellowish-pink, 

 thickly covered with waxy lamellae, no bare areas ; long caudal lamellae; 

 antennae and legs black or almost. There is a groove down the middle 

 of the back, with no triangular plates (such as occur in O. occidentalis) ; 

 the anterior lateral lamellae are about 1^ as long as broad, the posterior 

 ones about 2^ as long as broad. The caudal lamellae make a very con- 

 spicuous tail. 



Hab. — Abundant in nests of Lasius Americauus, Las Vegas and 

 Trout Springs, N. M. Easily known by the orange colour and long tail. 

 O. occidentalis also occurs at Trout Springs ; its secretion is hard to 

 remove, not at all easily brushed off as in lasiorum. Although O. 

 lasiorum is so abundant, I have never seen it except in nests of Lasius. 

 The $ with ovisac was first found by my wife, April 25. 



Dactylopius JVeomexicanus, var. indecisus, n. var. — 9. i 2 j millim. 

 long. Pink, varying to pale sage green ; mealy ; no lateral or caudal 

 tufts ; no well-defined ovisac ; legs and antennae very pale. Middle leg,, 

 with femur and trochanter, 174 \x • tibia 108; tarsus (without claw) 60. 

 Antennae 8-jointed, varying to 7 ; one 9 full of eggs had one antenna 

 with 8 joints, the other with 7. Formulae : 8i2(37)(56)4 and 821(37)6(45). 

 Measurements of joints in /j. : (i.)36-45. (2.)36-40. (3.)24~25. (4O15. 

 (5.) 15-18. (6.)t8-2i. (7O24. (8.)63-6c). Seven-jointed form: (i.)45„ 



(2-)45- (3-)3°- (4-)3 6 - (5 ) 2 4- (6.)27- (7-) 6 3- 



Hab. — In nests of Lasius Americanus, Las Vegas, N. M., April 22 



(IV. P. Cockerell). I thought this might be merely a summer form of 



D. JVeomexicanus, but the types of the latter, with very different ovisacs^. 



were collected in summer. 



