1894.] 



181 



Leucaspis pini. 



S Aspidiotus pini, Hartig, Jahresber., i, 642 (1837). 



? Aspidiotus Jlavus, Hartig, id. 



? Aspidiotus pini, Bouche, Stett. ent. Zeit., iii (1851). 



? Leucaspis pini, Sign., Ess. Cochen., 146, 2, pi. 6, fig. 2 (1870) ; Witlaczil, Zeit., 



f. wiss. Zool., xliii, Taf., v, fig. 3—7 (1886). 

 S ? id., F. Low, Wiener ent. Zeit., i, 273 (1882) ; A. C. F. Morgan, Ent. Mo. Mag., 



xxT, 189, pi. iii, fig. 3 (1889) ; id., iii, n. s., 13 (1892). 



Scale of the $ white, more or less pyriform, according to position on the fir 

 leaf; laryal moult absent?; second moult yellow, or yellowish- brown, with the 

 cephalic portion greenish, often 

 covered with a thin white film ; 

 ventral scale thin, apparently com- 

 plete. IJong., 1 — 15 mm. 



$ , after treatment with potash, 

 has the margins brown, with the 

 centre paler ; very elongate, ends 

 narrowly rounded, sides nearly 

 parallel, segments distinct ; margins 

 with an interrupted band of nearly 

 circular spinnerets or pores, very 

 distinct, and there are two short 

 bands of the same arising near the 

 vaginal opening, which gradually 

 widen out as they extend across the 

 abdominal segments. Antennae a 

 mere group of stiff spines with 

 basal swellings. Grouped spinnerets 

 wanting. Pygidium crenulated, 

 with four pairs of small lobes, of 

 which the 4th is very small, and 

 widely separated from the rest. 

 There are two serrated plates be- 

 tween the median and 1st and 2nd 

 pairs of lobes ; three between the 3rd and 4th, and leyond the 4th are five to sis 

 more, not shown in the figure ; all are deeply serrated, varying in the number of 

 serrations shown in the figure ; arranged at the base of the plates are some twelve 

 to thirteen crescent-shaped pores (" thickenings of the body wall," Comstock), very 

 distinct. There are also four pairs of very broad plates, partly overlapping the four 

 pairs of lobes and the 2nd and 4th plates. There is a spine over each lobe, and one 

 in front of the Ist and 2nd pair. Long., '75 — 1'25 mm. 



Scale of the $ dirty white, fiat, elongated, sides parallel, end rather narrowly 

 rounded ; larval moult yellowish-brown, anterior portion greenish. 



(? dark brown soon after death,* piceous afterwards ; antennee of ten joints, 

 each with a few hairs, which are longest on the terminal ones. Haltere, with a 



The specimens which I succeeded in rearing died before they were discovered. 



