APHID PKSTS OF MAIN]?. 



165 



the usual distal sensorium. (Fig. 278). Collection numbers 

 42-04; 9-05; 32-05; 3-08; 28-08; 27-09; 91-09; 55-10. 



Fig. 278. L. laricifex. Antenna of alate viviparous female. 



I have no authority for calling this species laricifex except 

 that there is nothing in the description of Fitch or others to 

 preclude its identity with that species, and the habitat and what 

 habits are recorded for laricifex agree with this Maine species. 

 There is, so far as I know, no authentic specimen of laricifex 

 for comparison. This species is not so strongly hirsute as 

 ctirvipes, and the hind tibia is relatively shorter and but weakly 

 bowed. The tarsi of these two species are much alike. 



Fig. 279. L. laricifex. Tarsus. 



Lachnus hyalinus Koch. A Lachnus common on Norway 

 Spruce (Piceaabies) is apparently hyalinus Koch. It falls to 

 that species in the key of Cholodkovsky (1898, p. 48 '(650) ) and 

 the most striking characters, — long fine hairs of entire body, the 

 unusual flocculence of entire dorsum, and the double row of 

 dark dorsal "dots" on abdomen of the Maine species are in 

 accord with the descriptions of Koch, Buckton (for macro- 

 cephalus) and Cholodkovsky (1898). The Maine records for 

 this species are given below. 



Fig. 280. L. hyaVwius. Antenna of alate viviparous female. 



Alate viviparous female. Head and thorax cinnamon brown. 

 Dorsal lobes of thorax and ventral plate dark brown or black. 

 Antennae hirsute with segments measuring — I, 0.06 mm ; II, 



