August, '17] BAKER: EASTERN APHIDS, PART II 427 



Euceraphis deducta n. sp. Taken on Inrch, Orono, Me., June 12, 

 1907, by E. M. Patch, Me. No. 4-07. 



This species is easily distinguished from all others in the genus 

 by the proportions of segment VI of the antenna. 



Alate Viviparous Female: Morphological Characters: Segment III, 1.68 mm.; 

 IV, 0.88 mm.; V, 0.8 mm.; VI (0.48 mm. + 0.144 mm.). Segment III, with about 20 

 sensoria on the basal 0.56 mm. Width of head across the eyes 0.64 mm. Cornicles 

 and anal plate normal for the genus. Length from vertex to tip of cauda 2.4 mm. 

 Length of forewing 3.52 mm. 



Color Character: Color apparent^ a miiform yellowish green. Antennae, tips of 

 femora and tibia and the tarsi dusky. E3'es dark brown; wings unmarked excepting 

 the tips of the veins which are shaded with brown. 



Described from specimens in balsam mounts. 



Type in U. S. National Museum. Cat. No. 20344. 



The following key will distinguish the American species of Euceraphis. 



Key to the American Species of Euceraphis 

 (Alate viviparous females) 



1. Anal plate distinctly but not deeply bilobed. Segment III of antenna} with 



eight or nine sensoria ^aya Davidson 



Anal plate entire or but slightly indented 2 



2. Tibia? uniform black and covered thickly with a large number of small, clear 



pores mucidus (Fitch) 



Tibiae not uniform black and without such pores 3 



3. Abdomen ■ndth a large dark brown patch in which are clear wax pore areas 



betuloe (Koch) 

 Abdomen without such dark patch and wax pore areas 4 



4. Combined length of base and unguis of segment VI about equal to half of the 



diameter of the head across the eyes hrevis Baker 



Combined length of the base and unguis of segment VI about equal to or much 

 more than the diameter of the head across the ej-es 5 



5. Unguis of segment VI less than one third of the length of the base .... deducta Raker 

 Unguis of .segment VI considerably more than two-thirds as long as the base ... 6 



6. Hind tibia with a longitudinal black stripe on its outer edge; segment III with 



about twenty-five sensoria lineata Baker 



Hind tibia with only the distal extremity black and segment III with about 

 fifteen sensoria gillettei Davidson 



Genus Callipternella Goot. 

 Callipternella annulata (Koch). Taken on Betula popuUfoUi at 

 Veazie, Me., by E. M. Patch, July 22, 1909. Maine No. 82-09. On 

 white birch, New Haven, Conn., July 7, 1909, by A. I. Bourne, Conn. 

 No. 1-16/142. On birch. New Haven, Conn., by A. B. C, June 28, 

 1911, Conn. No. 1-16/18 and on birch at Madison, Wis., by J. J. 

 Davis, June 7, 1913. What is. evidently the same species was men- 

 tioned by Gillette (1910) as occurring upon Birch. Vander Goot 

 (1913, p. 113) has placed this form as the same species as annulatus 

 Ivoch. 



