The Isoperla Of California (Plecoptera: Perlodidae); Updated Male Descriptions And Adult Keys For 18 Western Nearctic Species
Author
Sandberg, John B.
, & Boris C. Kondratieff & California Dept. of Fish & Wildlife - A. B. L. and CSUC Research Foundation, California State University, Chico, CA 95929 - 0555 U. S. A. E-mail: jsandberg @ csuchico. edu
jsandberg@csuchico.edu
Author
Kondratieff, Boris C.
Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, Colorado 80523, U. S. A. E-mail: Boris. Kondratieff @ Colostate. edu
Boris.Kondratieff@Colostate.edu
text
Illiesia
2013
9
5
34
64
journal article
6837
10.5281/zenodo.4760870
53754ae5-8913-4e45-b546-b9edae8f726b
1854-0392
4760870
150B2555-91E3-4110-8BBC-25F1AAC0E6B2
Isoperla roguensis
Szczytko & Stewart
(
Figs. 14
a-d,
20
e)
Isoperla roguensis
Szczytko & Stewart 1984
.
Holotype
♂
,
Oregon
,
Curry County
,
mouth of Rogue River.
Isoperla karuk
Baumann & Lee 2009
.
Holotype
♂
,
California
,
Humboldt County
,
Klamath River
@
junction of Aikens Creek
. Syn.
Sandberg, 2011b
.
Male
. Aedeagus: sclerotized posterior process present; body of aedeagus with one posterior lobe, one large dorsal lobe, and one anterior lobe (
Fig. 14a
); one bulbous and usually bi-hemispherical shaped patch of spinulae above sclerotized process and a small pair of spinule patches placed laterally (
Figs. 14
a-c); sclerotized process length approaching
0.5 mm
, blade-like in lateral view (
Fig. 14a
), distal margin expanded and slightly membranous in posterior view (
Fig. 14b
), shape of distal expanded margin variable, and narrow proximal portion of sclerotized process usually inverted inside posterior aedeagal membrane. Abdominal terga 8-9, 9, 9-10: without stout spinulae or long stout setae. Posterolateral margins of at least abdominal segment 8 with scale-like setae clustered in brushes of several setae. Paraprocts: curved dorsally, length if straightened subequal to combined first and second cercal segments, tapering abruptly to tiny sharp apices (
Fig. 14c
). Vesicle: rounded lobe, widest at base with broadly rounded apical margin (
Fig. 14d
).
Isoperla roguensis
shares similar characters with the species of the
I. marmorata
complex (
Table 1
). See comments under
I. fulva
. Three distinct spinule patches distinguishes this species. Recently,
Sandberg (2011b)
placed
I. karuk
Baumann & Lee 2009
as a junior subjective synonym.
The previously described everted anterior tubelike lobes (
Szczytko & Stewart 1984
, fig. 55) remained inverted after live eversion, their positions indicated by a pair of small inverted areas of membrane (openings). After clearing in KOH, the internal tubelike processes were visible with openings along anteroapical margin (
Fig. 20e
, ventral aspect provided clearest view).
Additional Material Examined.
CALIFORNIA
,
Plumas Co.
,
MF Feather River, FR
12N61X access off
Hwy
70,
10.5 mi
(
16.9 km
)
SE Quincy
,
39.86453°N
,
120.76138°W
,
18/
VI
/2013,
J.L. York
,
1♂
,
1♀
(
JBSC
);
Jamison Creek
,
1.6 mi
(
2.6 km
)
E Two Rivers
exit off
Hwy
70,
39.813°N
,
120.6821°W
,
19/
VI
/2013, J.L.
York
,
1♀
(
JBSC
).