366 APHIDS OF THE ROCKY MOUNTAIN REGION 
Genus Prociphilus Koch 
Koch, 1856:279; Tullgren, 1909:74; Baker, 1920a:76. ' . : e 
Characters. Antenna five-segmented in fundatrix, five or six-segmented in 
summer aptera, six-segmented in alata. Wax glands well developed on head 
of fundatrix; thoracic glands in alata large and not farther apart than their 
diameter. Cornicle absent. Cauda semilunar, bearing 4 to numerous hairs. 
Hairs inconspicuous, short and sparse, to somewhat conspicuous, about as long 
as diameter of segment bearing them and numerous. Fore wing with media 
simple; hind wing with both media and cubitus. Living in pseudo galls in 
leaves (excepting P. venafuscus on bark). 
Genotype (fixed by Gerstaecker, 1859), Aphis bumeliae Schrank. 
Key to Species of Prociphilus 
(Based on alatae from pseudo galls unless otherwise stated.) 
1.° TIT longer than. .60 (p.c $66) 22.0500. ks eich enact bumeliae 
wae «= LET Shorter thar ..60  .<.21:0-25.2.0.-25..cccascsccsoeseseescecass csonuaeustaceavacesechcateassdsavsdnasestetecesetempracatueedieen eee tanaenatens 2 
2. Secondary sensoria on III fewer than 10 (p. 368)........2.........cccccscesccecsccessesescceseecennes fraxinifoliae 
a0 Secondary sénsoria on ITI more than: 10...s2.ccccc-c.cccciese-ce.cocseacsacescedosyecesuscsacsengetesetevsltecsmeatierbeasuente 3 
3. Hairs numerous on hind tibia and longer than diameter of tibia. 
(On bark.) (pi S68) bocce lisa E Be ccaness snuncre shaban page tle taceaacch stele Roles eee a venafuscus 
.. Hairs on hind tibia sparse and shorter than diameter of tibia...........:......cccccsccccsccessseeesccedsonnee 4 
4. Hind tarsal II coequal with rostral IV+V. (On roots.) (p. 367).............-s:s00++ erigeronensis 
.. Hind tarsal II distinctly longer than rostral IV V.....0..0........:ccccssscscscsocensccsesensseseceecenensensenneses 5 
5. Hind tarsal II about .20 long; secondary sensoria 0 to 4 on V (p. 366).............. corrugatans 
Hind tarsal II about .30 long; secondary sensoria 0-1 on V (p. 369).........:..ssc-cssesees xylostei 
[Genotype Prociphilus bumeliae (Schrank) ] 
Aphis bumeliae Schrank, 1801 :102. 
Prociphilus bumeliae, Theobald, 1929:226; Tuligren, 1909:76. 
Fundatrix. Head and prothorax blackish brown; abdomen yellow-brown; mealy with 
white tufts; appendages dark to black. Body length 4; hind tibia .91; hind tarsal II .24; an- 
tenna 1-1.2. 
Gre OW 
cal ‘s 
te : 
(49 ) rei) & apes doo bop 
5 
Fundatrigen 
Fig. 441. Prociphilus bumeliae 
Alate Vivipara. Fundatrigenia. Head and thorax dark brown to blackish; abdomen dull 
yellow-red to ochre-brown; mealy to woolly; appendages dark brown to black. Body length 
4; fore wing 5.5; hind tibia 1.5-1.6; antenna 2.07-2.2; rostral IV+V .22, nearly attaining 2d 
coxa. Wax gland plates present on head, one pair of small ones between antennae and a pair 
of large ones on occiput between eyes; on pronotum two pairs, the median pair very large and 
nearly coalescing; on mesothorax a pair of large plates close together. 
Host. As winter host Fraxinus excelsior in pseudo gall leaf galls; as sum- 
mer host on roots of Abies balsamea and Pinus sp. (Not recorded on latter hosts 
from region.) 
Data for above description and drawings taken from description and fig- 
ures by Tullgren. 
Prociphilus corrugatans (Sirrine) 
The Woolly Hawthorn Aphid 
Pemphigus corrugatans Sirrine, 1893:129. ‘ 
Prociphilus alnifoliae Williams, 1910:7; Davis, 1911b:4. 
EEE GAEL EE Maxson, 1923:322 (synonymy declared); Gillette and Palmer, 
Fundatrix. Light greenish yellow, black on head; woolly; appendages black. Body 
length 3.5; hind. tibia .55-.63; hind tarsal II .15; antenna .63-.70; eye on tubercle. 
