June, 1903.] Coleman: Coccid.t, of the Conii er.k. 67 



Aspidiotus coniferarum Ckll. var. shastas, var. nov. 



Scale of Female. — The outer scale is a thin, transparent, brownish-white cone, 

 about I mm. in diameter, with a minute yellowish exuvia at the apex ; beneath this 

 shell there is a thick, opaque, reddish-brown skin, enclosing the insect; there is a 

 very thin white ventral scale. The outer scale bears such a close resemblance to the 

 little drops of exuded giun with which the host trees, Ctipressus Macnahiana, are 

 covered, that it is a very hard matter to distinguish them in the live slate, but they 

 fall from the dried branches by the hundred. 



Adult Female (Plate VI, Fig. 11). — Length .5 mm., width .4 mm.; body 

 nearly circular in outline ; color light brown ; a very few minute hairs visible ; spines 

 on the margin as indicated in the figure ; spiracles with club-shaped protuberances ; 

 antenuLV reduced to stout spines with tubercular base. Characters of abdominal 

 margin as follows (Plate VI, Fig. 12): a single pair of lobes, which are inconspicuous, 

 broadly rounded, often apparently fused ; there is a gland opening between these 

 lobes, with a serrated plate surrounding it, often protruding beyond the lobes (see 

 Fig. 12); a gland opens also, just at the lateral margin of either lobe, where a slight 

 conical plate is sometimes visible ; a second and third slight incision, into which 

 glands also open, are situated above the lobes ; spines as follows : a very small pair 

 between the median lobes ; five pairs of stouter ones are situated at intervals along 

 the margin. No groups of spinnerets. 



Lai-i'a (Plate \'I, Fig. 13). — The young, which are developed in the body of 

 the female, are, at birth, about .2 mm. in length, oblong-oval in form, and of a light 

 lemon-yellow color ; margins of thoracic segments marked by pairs of spines ; lobes 

 and spines of abdominal segment showing very distinctly ; legs rather long and slender ; 

 tarsus about three times as long as tibia ; with two very long digitules on the dorsal 

 side and a stout spine on the ventral side near the distal end ; claw long and slender, 

 slightly curved, with digitules slightly knobbed. Antennse five-jointed, formula, 5, 

 I, 2 (3, 4), the fifth is slightly longer than all of the other segments together, with 

 numerous transverse folds and several long hairs ; the first segment bears one long 

 hair. 



Scale of Male. — I have found small, dark-colored scales along with the female, 

 which I believe to be the male, but not having found the adult insect or the pupa I 

 cannot describe it as such. 



Habitat. — Discovered by the author, on Cupressus maciiabiana, 

 at Clear Creek, near Shasta P. O., Shasta Co., Cal., Aug. 29, 1901, 

 on the same trees with Dactylopiiis diuileyi, where it was also very 

 abundant. 



In going over my material in the laboratory, I find specimens 

 which have the same general characters as the above species except 

 that they average much larger, from Cupressus goveniana, collected in 

 the southern part of Lake Co., Cal., June 21, 1901. I believe them 

 to be the same species and will so record them until further investi- 

 gation. 



