22 APHIDS OF THE ROCKY MOUNTAIN REGION 
30. Hind tarsal II longer than 1.5 times rostral IV (alata) (p. 33)..-.--...----:::---s+-20-++ juni perensis 
.. . Hind tarsal II shorter than 1.5-times rostral) DV ci2.oc. coo coccccoeanesceerses-cnespenee see eee 31 
33... .Rostral IV) .25 Jong (p.'38) ccccs5 ice sccccepee kee a eae eae erat en palmerae 
24.‘ Rostral-IV«18long (ovipara) (ps 33) so ee ee eee juni perensis 
32. Tibial hairs not: numerous. On Pinus (edulis y( pi, 49) een ccte eee ee terminalis 
-.. -Libial hairs fairly numerous. On Pinus sylvestris (p. 40) ics scceccace-e- ee pinea 
«1 Tibial hairs numerous, ,On Picea: 25.258 xcigcc5e cecccdeccececca pe eoenccepaeedaonacsoenesces 33 
33; Rostral IV .20-.24: On Picea’ parryana:(p. 24) otc tee ee braggli 
... Rostral IV .15-.16. On Picea engelmanni 
34. Hairs on hind tibia .15 long, 1.5 times diameter of tibia; body light brown; 
powdery (p.i29) tee ee ee ye iS Eee, A tae ee eee ae ee engelmanniensis 
Hairs on hind tibia .08-.10, slightly longer than diameter of tibia in aptera. Body 
dark) brown; naked s( ps 50) )sc2cQn ee eo eee ee vandykei 
35. Cornicle base small, .16-.20 in diameter; hairs on antenna..10 long (p. 36)......occidentalis 
... Cornicle as above in alata; hairs on antenna of alata short and sparse (p. 33)....1dahoensis 
Cornicle base medium, .22-.25 in diameter; hairs on antenna .10-.20 long 
(poss SL) ere ase es Oe Er a ree ce a ke winonkae 
..-- Cornicle base large, .30 or more im Giameted) <:2ccccccccicnccade--ovaceccceeneac osese cee eee eee 
36. III exceeding sum of IV and V;; hairs of hind tibia .17-.25 long. 
On Sabina scopulorum (pi 45): 222 ee ee sabinae 
... III shorter than the sum of IV and V;; hairs of hind tibia .14-.17 long. 
On Juniperus. sibirica) (ps. 46) soccer eee ee sibiricae 
Cinara apini (Gillette and Palmer) 
The Spotted Short-haired Limber Pine Aphid 
yas 26 
Alate = Apt Vik 
Fig. 14. Cinara apini 
Lachnus apini Gillette and Palmer, 1924:31. 
Cinara apini, Gillette and Palmer, 1931:846. 
Fundatrix. Same as summer vivipara or with less powdery markings. 
Apterous Summer Vivipara. Body dark brown; mottled with powder on median line, 
intersegmental lines and lateral areas; appendages yellowish to dusky; cornicle and distal 
two-thirds of hind tibia black. Body length 3.25-4; hind tibia 2.5-3; antenna 1.25-1.30; unguis 
rather short and blunt-conical. Rostrum attaining at least middle of abdomen. Hairs tending 
to be spinelike, moderately numerous; on body .05-.07 long; on cornicle slightly longer; on 
hind tibia hardly as long as half diameter of tibia. 
Alate Vivipara. Head and thorax black; abdomen dark golden brown; marked with 
white secretion on vertex, middle and sides of pronotum, sutures on mesonotum, entire 
scutellum and on abdomen, on median line, intersegmental lines and lateral areas; cornicle, 
cauda, knees, most of tibiae and femora and entire tarsi black. Same as aptera in measure- 
ments. 
Secondary sensoria, round, convex. Hairs as in apterous Vivipara except on hind tibia 
fully as long as diameter of tibia. Fore wing with media faint and twice-forked. 
Ovipara. Same as apterous vivipara except as follows: Abdominal VI, VII and VIII 
heavily covered with white secretion and hind tibia slightly swollen on proximal half and 
covered almost to tip with numerous small sensoria. 
Male. Alate. Color pattern, wings and hairs as in alate vivipara. Body length 2.30; hind 
tibia 1.50; antenna 1.25; secondary sensoria tuberculate and numerous on III, IV and V. 
