﻿NOTKS ON A LIME TREE APHIS N15W TO BRITAIN. 



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Nymph. (Fig. 2, b & e). 

 Length 2 to 2-8 mm. Yellowish to yellowish green and yellowish 

 brown. Legs and wing pads, and sometimes the head, dark. 

 Antennte (fig. 2b) with the first two basal segments small, about 

 equal in length ; the third the longest, about equal to the fourth and 

 fifth, which are about the same length ; the sixth a little longer than 

 the fifth, its "nail" short and blunt; a few hairs on all the segments, 



Fig. 2. — Pachypappa reaumuri, Kalt. 

 A. Head of larva from alate female ; B. Head of nymph; C. Head of viviparous 

 female; D. Cauda of viviparous female ; E. Cauda of nymph. 



and a single sub-apical sensorium on the fifth and sixth. Eyes 

 large and dark. Eostrum yellow, dusky at the apex, reaching to the 

 base of the third pair of legs. Apex of body with some long stiff hairs ; 

 Cauda dark, hairy; anal plate pale, hairy ; and a few hairs along the 

 sides of the abdomen. Legs with minute hairs scattered on the tibiae 

 and tarsi. 



Alate Viviparous Febiale (Figs. 3 & 4). 

 Length 2-8 to 3 mm. ; wing expanse 9 to 10 mm. Head, thorax, 

 antennae, and legs black. Abdomen yellow-green to dark green ; cauda 

 dusky to black. Antennge not quite as long as the head and thorax 

 (fig. 3, a) ; the first two basal segments small, the second somewhat 

 globular towards the apex ; the third the longest, with eight to ten 

 sensoria spreading across the segment ; the fourth rather more than 

 half the length of the third and about equal in length to the fifth, or 

 sHghtly shorter, with one or two slit-like sensoria and one rounded 

 one near the apex (fig. 3a, a 3 and a 4) ; the fifth with a large, irre- 

 gular sensorium near the apex {a 2) and, according to Del Guercio, a 

 narrow one near the middle ; the sixth about as long as the fifth, with 

 a short blunt nail, with a few terminal hairs {a 1) and a sub-apical 

 sensorium, or now and then slightly larger than the fifth ; all the 

 segments pilose. Eyes large and red to black ; stemmata (d, cl 1) 

 pale. Proboscis (fig. 3b) reaching past the base of the second pair 

 of legs, almost to the third pair, thin, the last two segments dark ; 

 remainder pale, the apex being jet-black ; apical segment longer and 

 narrower than the penultimate ; hairs on one side of the last two 

 segments' and all over the long following one. Cauda dusky, and 

 anal plate dark and spinose (c andcl). Legs rather long and thin; tibiae 

 and tarsi with fine hairs. The abdomen (when the insect is prepared 

 in balsam) shows two lateral rows of dark spots, each with a small pale 



