52 APHIDS OF THE ROCKY MOUNTAIN REGION 
Alate Vivipara. Head and thorax dark; abdomen reddish brown; otherwise same as 
apterous vivipara except as figured. 
Collections. On Tuja sp. Utah: Saint George. Idaho: Twin Falls. Wyo- 
ming: Torrington. Apterous and alate viviparae Mar. 22 to April 12 and apterae 
July 13. 
Type. U.S.N.M. Paratypes, Colo. Agr. Exp. Sta. and Hottes Collections. 
Chief Distinguishing Characters. Small size of the cornicle, long hairs, long 
base of VI. 
ara WA LL ys 
Le ue oe Ti 
nll ae LAL MAES ESA AN 
Seneca! mesa tes ih) 8 
x 
Fig. 49. Cinara winonkae 
This species resembles C. tujae (Del Guercio) (1909a:309 Lachniella) but 
differs as follows: Much longer hairs on hind tibia than figured by Del Guercio 
(op. cit.) and absence of dark band between the cornicles and broken dashes 
anterior to the cornicles. However, the specimens studied are cleared and 
mounted so may have lost some markings visible in life. Comparison of fresh 
material with specimens of Del Guercio’s species may prove Hottes’ name to be 
a synonym. 
This species differs from C. thujaefolia Theobald (1914c:335) apparently 
only in the longer hairs, especially on the hind tibia, as observed by study of 
specimens determined by Mimeur as Theobald’s species. 
Subtribe Lachnina* 
Pterochlorina Baker, 1920a:17. 
Characters. Fore wing with radial sector curved or straight, arising some 
distance proximad of apex of stigma and with media slender but more distinct 
than in Cinarina. Hind tarsal I with dorsal side shorter than half of ventral 
side. Rostral V distinct, obtuse. Ocular tubercle evident. Antenna with unguis 
usually shorter than half the base of VI. Body brown to black, wings often 
with smoky bands or spots. Living on woody parts of trees and shrubs. 
Key to Genera of Lachnina 
1. Rostrum never much longer than body. Hairs not very fine and short...........2..-::::ceseeeeeeeeeee 2 
.. Rostrum much longer than body. Hairs very fine and short (p. 56)............-------00-+ Stomaphis 
2) Stigma not elongated tolapex Of swing) (pe 52))eeeereeet epee eteee create eee nee eae Lachnus 
Stigma, elongated) to apex, of Wine, Wn oo) erences ee eee ete a oe ee ee ee Longistigma 
Genus Lachnus Burmeister 
Lachnus Burmeister, 1835:91; Schumacher, 1921:185; Hottes, 1930b:185. 
Pterochlorus Rondani, 1848:35. 
Characters. Rostrum obtuse, V very short but distinct. Hind tarsal I 
trapezoidal, dorsal side at least third as long as ventral side. Fore wing with 
radial sector slightly to strongly curved, arising some distance proximad of 
apex of stigma; media fine but not faint. Wings often smoky. Living on bark 
of trees and shrubs. 
*Sense of Borner not Baker. (Borner, 1930:124.) 
