SUBFAMILY APHINAE 31 
Chief Distinguishing Characters. Diameter of cornicle (not exceeding .20), 
length of rostral IV (.20-.22), rather numerous tibial hairs, length of III (.78- 
.90), character of sensoria on III of alate vivipara (flat and irregular, and their 
number (17-25), length of hind tarsal II (.45, greater than tenth of length of 
tibia), length of hind tibia (about 3) and tibial hairs not blunt or curved. 
Cinara fornacula Hottes 
Cinara fornacula Hottes, 1930:186; Gillette and Palmer, 1931:854 (immature specimen). 
Apterous Summer Vivipara. Light green; with moderate pulverulence throughout; ap- 
pendages yellow-brown, with tarsi, tips of tibiae and of antennal V and VI and terminal 
segments of rostrum dark; cornicle pale; cauda and anal plate dusky. Body length about 3; 
antenna 1:20; III .55, IV .22, V .23, VWI .16+.03; cornicle .22-.25; hind tibia about 2; hind 
tarsal II .52; rostral IV .20, Vv .10, attaining abdominal II. Hairs on body .09; on vertex .06- 
-.07; on antennal III .03-.06, about same length as diameter of III; on hind tibia at angle of 
45-50 degrees, fine to semispinelike, .05-.10 long (diameter of tibia .10). 
Collections. On Picea pungens, on bark of twigs. Colorado: Cameron Pass 
and Skyway. Apterous viviparae July 15 and Aug. 26; apparently rare. 
Type. University of Minnesota Collection. 
This species in some ways resembles C. occidentalis but differs as follows: 
Larger size of body (over 3, not 2-3 long), absence of flocculence, longer tarsal 
II (.45-.50 not .30-.40), longer rostral IV (.20-.22 not .13-.14) and relatively 
shorter tibial hairs (not longer than diameter of tibia instead of twice as long). 
This species may be C. piceicola var. viridescens (Cholodkovsky) (1896c and 
1898 Lachnus) as comparison with the original description of viridescens and 
with metatype specimeans of piceicola has revealed no reliable differences in 
structure. However, the form is here retained as distinct since examination 
of the type specimens (hardly available at present) might bring forth some dis- 
tinction. C. fornacula seems to lack the green dorsal stripes and the habit of 
living in colonies as described by Cholodkovsky. 
Cinara glabra (Gillette and Palmer) 
The Glabrous Ponderosa Pine Aphid 
Fundat ona = 
132 As 
Fig. 24. Cinara glabra 
Lachnus glabra Gillette and Palmer, 1924:35. 
Cinara glabra, Gillette and Palmer, 1931:854. 
Fundatrix. Same as apterous summer vivipara except as follows: Hind tibia 1.15; an- 
tenna .86. 
Apterous Summer Vivipara. Nymph. Colorless, shading to pale orange posteriorly, ap- 
pendages colorless throughout. Adult. Dusky olive-green to olive-brown to black; shining on 
head; without powder on dorsum; surface of body shagreened; legs mostly dusky, lighter 
portions orange-brown; wings slightly smoky. Body 3 by 2; hind tibia 1.5-1.7; antenna 1.10, 
