September, 1942 
series of nivalis are known to be in exist- 
ence. It seems that the best interests of 
nomenclature and taxonomy will be served 
by using the name of maura for this spe- 
cles. 
It has been interesting to find, in a large 
series of specimens from Oregon, adult 
and nymphal specimens which I cannot 
satisfactorily separate from maura material 
taken in eastern North America (Frison 
1942). Slight differences in wing color 
seem to exist, but characters of this nature 
are apt to be variable. Tueniopteryx maura 
is common in parts of Minnesota, and no 
doubt it will be found eventually in states 
or Canadian provinces east of Oregon and 
west of Minnesota. 
The species maura (= nivalis and mau- 
ra) has been previously recorded from the 
District of Columbia, Illinois, Maine, 
Maryland, Massachusetts, New Hamp- 
shire, New York, North Carolina, Nova 
Scotia, Pennsylvania and Virginia. To 
this list I can now add the states of Con- 
necticut, Florida, Georgia, Indiana, Iowa, 
Kentucky, Michigan, Minnesota, Mis- 
sourl, Ohio, Oklahoma, Oregon, Tennes- 
see, West Virginia and Wisconsin. 
Taeniopteryx parvula Banks 
Taeniopteryx parvula Banks (1918, p. hy 
Original description, ¢. 
Taeniopteryx parvula Frison (1929, p. 383, 
and 1935a, p. 345). Additional descriptions 
and records. 
The typic series of parvula consists of 
two males, No. 10,049, in the collection 
of the Museum of Comparative Zoology. 
One of these is from “Washington, D. 
C.” and the other from ‘Peach Grove 
AEDEAGUS 
ae DORSAL VIEW 
SUBANAL LOBE 
LATERAL VIEW 
sx DISSECTION SHOWING 
OAL VENTRAL VIEW OF MALE 
“GS SUBANAL LOBES 
He 
| Fig. 7.—Taeniopteryx parvula. 
Frison: NortrH AMERICAN PLECOPTERA 
249 
ile Vane Web. 21: 1915,” and I am 
selecting the latter as the lectotype. 
In view of the fact that there is another 
species of Taeniopteryx, described in this 
article as lita, very closely related to and 
apt to be confused with parvula, I wish to 
present drawings of the aedeagus, fig. 7, 
and of the subanal lobes, not previously 
illustrated. Drawings of other aspects of 
parvula are available for comparison in 
Frison 1935a (figs. 190, 214 and 223: emt 
has been an interesting discovery to find 
that the aedeagus of parvula and of Lita 
are very different, a discovery suggesting 
that this character merits study in the case 
of other species of this family, 
Taeniopteryx lita new species 
Matve.—In general similar to parvula 
Banks as redescribed by Needham & Claas- 
sen (1925). It differs from parvula as 
follows: The supra-anal process is much 
broader at tip, and the one-segmented cerci 
_have a small finger-like process on upper 
surface, fig. 8; subanal lobes are prominent 
and lobate at tips, whereas in parvula 
these same lobes are less developed and 
terminate in a small pointed hook, fig. 7; 
ninth abdominal sternite with a membra- 
nous area on posterior median margin coy- 
ered and surrounded with long, fine setae, 
fig. 8; aedeagus in various views as in 
fig. 8. 
Wing venation as in fig. 8. Length to 
tip of wings 10 mm. 
FEMALE.—Head, thorax, basal abdom- 
inal segments and appendages in general 
similar to those of male. Genital opening 
near middle of eighth abdominal sternite, 
not covered by a plate, sclerotized areas 
bordering opening larger, fig. 8, than in 
parvula (Frison 1935a, fig. 214). 
Holotype, male.—Elizabethtown, IIl.: March 
7, 1928, T. H. Frison & H. H. Ross. 
Allotype, female—Same data as for holo- 
type. 
Paratypes. — ILLINOIS. — ELIZABETHTOWN: 
Same data as for holotype, 34. Gorconpa: 
March, 17,,1932, HH. Ross 14. GRAYVILLE, 
Wabash River: March 8, 1928, T. H. Frison 
We tlie ti: Rossy 6 
ARKANSAS.—BRASFIELD, Cache River: April 
LG aL 23) ella ee ea oss alae 
INDIANA.—ST. ANTHONY: Feb. 13, US Tere 
H. Frison & C. O. Mohr, 16. Rocers, White 
River: March 14, 1936, T. H. Frison & H. H. 
Ross, 4¢. Wunstow, Patoka River: Feb. 14, 
£933, Hi Erison:& CO, Mohr, 2¢. 
MARYLAND.—PRIEsTs BRIDGE: Feb, 25, 1938, 
Be De Burks ele. 
