Soliperla quadrispinula ( Jewett, 1954 )

Stark, Bill P., Sandberg, John B. & Lee, Jonathan J., 2017, California Soliperla Ricker, 1952 (Plecoptera: Peltoperlidae), Distribution And Taxonomic Characters, Illiesia 13 (7), pp. 82-93 : 84-86

Soliperla quadrispinula ( Jewett, 1954)

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org: TaxonName:106

Figs. (2-3, 8-9, 14)

Peltoperla (Soliperla) quadrispinula Jewett, 1954:169 .

Holotype male (CAS), Wrangle Gap Camp , Jackson Co., Oregon.

Soliperla quadrispinula: Illies, 1966:26 .

Published California records. Del Norte Co., 3 mi NE Hiouchi, 1 June 1991, B. Stark, R.W. Baumann, C. Henderson, 1♂, 1L ( BPSC). Humboldt Co. , Cedar Creek , Hwy 299, 31 May 1991, B. Stark, R.W .

Baumann, C. Henderson, 1♂ ( BPSC) . Same site, 25 April 1987, B. Stark, R.W. Baumann, C.R. Nelson, 2 larvae ( BPSC) . Grassy Creek , Fieldbrook, 22 May 1982, B. Stark, D. Ziegler, 6♂, 3♀, 54 larvae ( BPSC, BYU) . Ruby Creek , 3.8 miles E Berry Summit, 19 May 1998, C.R. Nelson, B. Stark, I. Sivec, S.W. Szczytko, 1♂ ( BYU) . Trinity Co., Coffee Creek , 7 June 1934, E.C. Van Dyke, 1♂ ( CAS) .

Additional California records. Del Norte Co., Small falls into Patrick Creek , 1 mile abv Hwy 199, Patrick Creek Rd, 41.886333, -123.852066, 24 May 2014, B. Stark, A. Harrison, 2♀ ( BPSC) . Small falls into Patrick Creek , Patrick Creek Rd, abv Shelly Creek, 41.90535, -123.85595, 24 May 2014, B. Stark, A. Harrison, 1L ( BPSC) . Tributary Smith River , Hwy 199, 1 mile NE Myrtle Creek, 1 June 1991, B. Stark, R.W. Baumann, C. Henderson, 1♀ ( BPSC) . Humboldt Co., Boise Creek , Boise Creek Campground, Hwy 299, 1 May 2011, B.C. Kondratieff, J.B. Sandberg, 1♂ ( CSUIC) . Boise Creek , South Boise Creek Campground, 40.94367, -123.65679, 24 May 2006, J. Lee, 5♂, 4♀ ( JJLC) . Janes Creek , Trail 11, Arcata Community Forest, 27 May 2002, J. Lee, 2♀ ( BYU) . Jolly Giant Creek , Arcata, 40.900, -123.716667, 7 June 2005, R.W. Baumann, B.C. Kondratieff, 1♂ ( BYU) . Jolly Giant Creek , Arcata Community Forest, 40.87674, -123.06954, 22 May 2006, J. Lee, 1♂ ( JJLC) . Luffenholtz Creek tributary, Scenic Drive, 2 miles S Trinidad, 41.04187, -124.11910, 24 April 2015, J. Lee, 1♂, 1♀ ( JJLC) . Same site, 30 April 2015, J. Lee, 1♂ ( JJLC) . Puter Creek , South of Mad River Fish Hatchery, 40.84984, -123.99179, 31 May 2008, J. Lee, 5♂, 1♀ ( JJLC) . Rube Ranch Creek , Hwy 169, 5 miles NW Weitchpec, 41.22844, -123.77129, 12 May 2010, J. Lee, 1♂ ( JJLC) . Ruby Creek , 3.8 miles E Berry Summit, 40.907833, -123.7182167, 25 May 2014, B. Stark, A. Harrison, 2 larvae ( BPSC) . Same site, 7 June 2005, B.C. Kondratieff, R.W. Baumann, 1♂, 1♀ ( CSUIC) . Small seep above Ruby Creek, Hwy 299, 19 May 1998, S.W. Szczytko, B. Stark, C.R. Nelson, I. Sivec, 1 ♀, 7 larvae ( BYU) . Small stream, 2.4 miles E Berry Summit, Hwy 299, 7 June 2005, B.C. Kondratieff, R.W. Baumann, 6♂ ( CSUIC) . Same site, 20 May 2001, B. Stark, K.W. Stewart, 1♂ ( BPSC) . Unnamed stream, Hwy 299, milepost 31.48, 40.90485, -123.73644, 28 May 2008, J. Lee, 1♂ ( JJLC) . Same site, 11 July 2008, J. Lee, 2♂ ( BPSC) . Van Duzen River , Rainbow Bridge, 40.48058, -123.89093, 5 June 2009, J. Lee, 1♂ ( JJLC) . Shasta Co., Montgomery Creek , Montgomery Falls , off Hwy 299, 24 May 2007, B.C. Kondratieff, R.W. Baumann, 1♂ ( CSUIC) . Roaring Creek , Big Bend Rd, N of Wengler, 24 May 2007, R.W. Baumann, B.C. Kondratieff, 1♂, 1♀ ( BYU) . Siskiyou Co., McCloud River , Lower falls picnic area Hwy 89 E Mt Shasta, 41.24012, -122.02479, 23 May 2014, J.B. Sandberg, 1♂ ( JBSC) . Trinity Co., Bidden Creek , Hwy 299, 25 April 1987, B. Stark, R.W. Baumann, C.R. Nelson, 3 larvae ( BPSC) . Same site, 40.78928, -123.45122, 10 May 2006, J. Lee, 1♂ ( JJLC) . Clear Creek & adjacent tributaries, Hwy 36, 2.6 mi E of Forest Glen CG, 40.37411, -123.36347, J.B. Sandberg, 2♂ ( JBSC) .

Male epiproct. Stark & Gustafson (2004) previously commented on variation in epiproct structure for this species. The SEM image in that study ( Fig. 17 in Stark & Gustafson 2004), taken from a specimen collected in Elk River Canyon, Curry County, Oregon, shows the marginal armature consists of a single row of 19 irregularly spaced and sized teeth, with four additional submarginals and a width of 400 μm; a small median gap occurs between teeth on the marginal row. The epiproct used in this study, taken from a Humboldt County, California specimen ( Figs. 2-3 ) lacks most of the marginal teeth but the total number of teeth on the anterior face and margin (20) is similar to the number on the Elk River Canyon specimen, the width (417 μm) is also similar, and both samples show a median gap in the marginal teeth.

Male aedeagus. Stark (1983) noted the total number of large setal spines, while often four, may be slightly more or less numerous due to extra or fewer spines on one or more aedeagal lobes. Three spines are visible on the specimen shown in Fig. 8 , but the fourth is hidden. The largest visible spine ( Fig. 9 ) is 300 μm long. Each spine originates from a long slender sclerite.

Larval abdominal pigment pattern. Stark (1983) illustrated the pigment pattern for a specimen from the type locality in southern Oregon. This specimen had an obscure median circular spot on tergum 7 and relatively large median pale spots on terga 5 and 6. An additional small pale median spot is present on tergum 4. This is fairly similar to the pattern shown in Fig. 14 from a Humboldt County, California specimen. The median spot shown on tergum 6 for the latter specimen is smaller than the one on tergum 5, and it is more circular than triangular. Six additional Humboldt County specimens show similar patterns. Based on these observations and supported by similar ones for S. sierra and S. thyra , we offer below a preliminary key to the larval Soliperla known from California.

Distribution. Published California records for S. quadrispinula are available from Del Norte (1 site), Humboldt (6 sites) and Trinity (1 site) counties ( Jewett 1954; 1960; Nelson & Stark 1987; Stark 1983; Stark & Gustafson 2004). Herein, we report unpublished collections from five counties and 20 sites. The species also occurs in Oregon where it extends from Jackson and Curry counties in the South to Clatsop and Benton counties in the North ( Stark 1983; Stark & Gustafson 2004). The California distribution is concentrated in four northwestern counties of Del Norte, Humboldt, Shasta and Trinity ( Fig. 17 ). An additional female Soliperla specimen collected in Nevada County by B.C. Kondratieff and C.J. Verdone and tentatively identified as S. quadrispinula was not included in Fig. 17 , or in the list of material examined for this species.

Figures

Fig. 17. Distribution of Soliperla species in California (S. quadrispinula = red squares, S. sierra = blue circles, S. thyra = green diamonds).

Figs. 2-7. California Soliperla male epiprocts. 2. S. quadrispinula, apical section of epiproct and upper stem, California, Humboldt Co., Unnamed stream near Berry Summit, Hwy 299. 3. S. quadrispinula, left half of anterior epiproct surface. 4. S. sierra, apical section and upper stem of epiproct, California, Sierra Co., Big Springs, Hwy 49. 5. S. sierra, right half of anterior epiproct surface. 6. S. thyra, apical section of epiproct and upper stem, California, Napa Co., 9 miles N Calistoga, Hwy 29. 7. S. thyra, right half of anterior epiproct surface.

Figs. 8-13. California Soliperla male aedeagal armature. 8. S. quadrispinula, apical aedeagal section bearing prominent spines, California, Humboldt Co., Unnamed stream near Berry Summit, Hwy 299. 9. S. quadrispinula, detail of large spine. 10. S. sierra, ventral aedeagal spine patch, California, Sierra Co., Big Springs, Hwy 49. 11. S. sierra, dorsolateral spiny aedeagal lobe. 12. S. thyra, large ventroapical aedeagal spines, California, Humboldt Co., Willow Creek, East Fork Confluence. 13. S. thyra, basolateral spine patch.

Figs. 14-16. California Soliperla larval abdominal color patterns, segments 2-10. 14. S. quadrispinula, California, Humboldt Co., Grassy Creek. 15. S. sierra, California, Sierra Co., Big Springs. 16. S. thyra, California, Glenn Co., Salt Creek.