SOME NEW NEARCTIC COLLEMBOLA 
By D. L. Wray 
Raleigh, N. C. 
The insect order Collembola seems to have as extensive geograph- 
ical distribution as any other animal group. Many species are very 
widely distributed geographically, but some are limited to particular 
ecological situations. A few years ago I described T etracanthella 
ethelae taken here at Raleigh, N. C., at an altitude of only 325 feet. 
The habitat of this genus was the Arctic regions of North America 
and the higher mountainous regions of Europe and Asia. This past 
year T. ethelae was taken near the top of Mt. Mitchell, at an al- 
titude of about 6500 feet and up on the side of Grandfather Mt. 
at an altitude of about 5000 feet. Hence here is a species with a 
wide range as to both altitude and geographical distribution. Re- 
cently in some material sent to me for study by Dr. G. F. Knowlton 
from Utah I found a Tullhergia having three anal horns, a form 
very close to the European T. affinis Borner. Bonet (1944) has 
described a form ( Mesaphorura incisa ) with three anal horns from 
Mexico. Of particular interest is the occurrence of another Eur- 
opean form ( Xenyllodes armatus Axels.) in North America fauna. 
A note on this species is given below. 
The forms described in this paper are Tullhergia hnowltoni 
(Onychiurinae ) , Onychiurus wilchi {Onychiurinae) , and Folsomia 
highlandia ( Isotominae ). 
Family Entomobryidae. 
Genus Folsomia Willem. 
Folsomia highlandia, n. sp. 
(Figs. 10-17) 
Length up to 1.8 mm. Dirty gray in color, speckled with purplish- 
black pigment over head and body segments dorsally and ventrally. 
The pigment is noticeably heavy on the frontal area of the head 
(Fig. 16). The pigment on the body segments is heavier on the 
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