168 DACTYLOPIUS LONGISPINUS. 



Dactylopius longispinus, Targ.-Tozz. ; A Studi sulle 

 Cocciniglie (Mem. del Societa Ital. di Scienze 

 nat., torn, iii, n. 3) (1867). Berlese; Le Cocci- 

 niglie Italiane, p. 7 (1893). 



Dactylopius adonidum, Signoret ; Essai, p. 340, 

 pi. vi, figs, l-ld (1875). 



Dactylopius longifilis, Comstock ; Report, 1880, 

 p. 344, pi. xi, fig. 2 ; pi. xxii, fig. 1. 



Adult female (fig. 12) elongate-ovate ; covered with 

 white mealy wax except at the articulation of the 

 segments, where the colour of the body shows through. 

 The white, waxy, marginal appendages are shortest at 

 the sides of the anterior half; those on the posterior half 

 gradually lengthen out, the outer caudal pair being 

 sometimes longer than the entire length of the insect; 

 the central caudals are very short and slightly diver- 

 gent at the ends. Antennae (fig. 13) of eight joints, the 

 third, fourth, and eighth being the longest and of equal 

 length; the first and the fourth to the seventh are 

 nearly equal in length ; all the joints have fine hairs ; 

 formula (2, 3, 8) (1, 4, 5, 6), 7. Legs strong; digi- 

 tules to claw rather strongly dilated; those of the 

 tarsi faintly knobbed. Anal lobes (fig. 15) faintly 

 indicated, each bearing one long and two minute hairs 

 and a ventral group of spinnerets surrounding two 

 short spines. Anal orifice (fig. 15) with six rather 

 long hairs. Marginal groups of spinnerets surrounding 

 a pair of short spines (fig. 14) and placed within a 

 series of fine hairs. Dermis with numerous fine hairs 

 and simple spinnerets. 



Long, 3-4 mm. 



Ovisacs composed of loose, elastic fibres, and when 

 isolated somewhat cylindrical in form, but, like those 

 of D. citri, usually massed together in large numbers 

 and quite devoid of form. 



Male. I have not been fortunate in procuring this 

 sex in any stage ; but, judging from Comstock's descrip- 

 tion (1. c.), it very closely resembles the male of D. citri 



