September, 1942 
very convincing bit of evidence that the 
two are identical. 
Since the distributional pattern of carolin- 
-ensis is so poorly known, the following records, 
based upon the Illinois Natural History Survey 
collection and an examination of material sent 
for study, are presented. 
MARYLAND.—KEYSER RIDGE: 
Frison & Ross, 2 nymphs. 
NEw HAmpsHire.—Norti Woopstock, Bog 
Brook: June 21, 1941, Frison & Ross, 1 nymph. 
New Yorx.—Lloyd Cornell Wild Flower 
Preserve, CAROLINE: Aug. LOL 928 ee lee He 
Frison, 1 nymph. Irnaca: Sept 4, 1936, 
Harvey Bowman, 39 nymphs; Coy Glen, under 
stones and in gravel of rapid waters, Oct. 6, 
198 [1908?], nymphs. Downsvitte: Campbell 
Brook, Sept. 4, 1935, nymphs; June 16, 1940, 
H. Dietrich, 16. McLean: May 29, 1927, 
1¢, 1 exuvia. Wild Life Preserve, SISTER- 
VILLE: June 9, 1927, 19, 1 exuvia. SCHOHARIE: 
June 6, 1937, Flick, 19 ; May 14, 1938, P. Jen- 
nings, 1 nymph. KEENE, small creek 3 miles 
west, Adirondack State Park: June 20, 1941, 
Frison & Ross, 1 exuvia. EUBA Mitts, Adi- 
rondack State Park: June 20, 1941, Frison & 
Ross, 1 exuvia. Roscoz, Beaver Kill Creek: 
June 28, 1940, P. Jennings, 1¢. Mount Trem- 
PER, Esopus Creek: July 31, 1938, P. Jennings, 
19. Beaver Kiii, Beaver Kill River: July 
24, 1940, R. B. Fischer, 1 nymph. Upper 
BEAVER KILL: June 21, 1936, Nottingham, 1 
nymph. CATSKILL: June 20, £93 6.5-[2eBU Ns 4 
nymphs. 
NorTH CaAroLINA.—BLAcK Mountain, fork 
north of Swannanoa: May, 1@; VI, 29. 
PENNSYLVANIA.—POYNTELLE: June 17, 1904, 
M. Hebard, $. Monroe County: Marshall’s 
Creek, May 24, 1935, W. J. Harmer, 3 nymphs; 
Saw Creek, May 19, Dosa VV ole. Elarmer, 3 
nymphs. Prke County, Saw Creek: May 19, 
1935, W. J. Harmer, 6 nymphs. 
TENNESSEE.—GATLINBURG: Le Conte Creek, 
May 14, 1939, Frison & Ross, 1 exuvia; May 
14, 1939, Frison & Ross, 18 (reared) ; June 
13, 1940, Frison et al., many exuviae; June 
ie) 740, Frison et ‘al., 18, 359, 1 exuvia ; 
June 14, 1940, T. H. Frison, 1 adult. Kwox- 
VILLE: June 13, 1940, Frison et al., many 
“xuviae; June 14, 1940, Frison et al., 1 exuvia. 
VIRGINIA—-STANDARDSVILLE: Sept 27, 1936, 
Prison, 1 nymph. 
Dec. 30, 1934, 
Acroneuria lycorias (N ewman ) 
Perla lycorias Newman (13395 p35.) e Orig. 
nal description. 
Acroneuria lycorias Ricker (1938; p. 139). 
Jesignates lectotypic @. 
Acroneuria perbranchiata Neave (193 Srp. 
37). New synonymy. 
Newman in his original description does 
lot give the sex of his typic specimens, but 
Xicker (1938) designates a female speci- 
nen in the Hope Collection, University 
Museum, Oxford, as the lectotype and 
tates that it agrees with Needham & 
‘laassen’s (1925) description of this spe- 
Frison: NorrH AMERICAN PLECOPTERA 
283 
cies. Elsewhere in this article I have 
pointed out that there has been some mix- 
ing of species under the name of lycorias 
and that the nymph described as this spe- 
cies by Claassen (1931) is the nymph of 
carolinensis (Banks). 
A study of paratypic male and female 
specimens of Acroneuria perbranchiata 
Neave sent to the Illinois Natural History 
Survey collection by Neave has revealed 
that this species is a synonym of lycorias. 
I suspect that Claassen’s (1931) erroneous 
assignment of the nymph of carolinensis 
Fig. 50.—Nymph of Acroneuria lycorias. 
to /ycorias had some influence in leading 
to the description of perbranchiata since 
Neave describes the nymph of perbranchi- 
ata and mentions its great similarity with 
lycorias as described by Claassen except 
for the presence in perbranchiata of anal 
abdominal gills. 
