Isoperla sobria (Hagen), 1979

Sandberg, John B. & Kondratieff, Boris C., 2013, The Isoperla Of California (Plecoptera: Perlodidae); Updated Male Descriptions And Adult Keys For 18 Western Nearctic Species, Illiesia 9 (5), pp. 34-64 : 55

publication ID

https://doi.org/10.5281/zenodo.4760870

publication LSID

lsid:zoobank.org:pub:150B2555-91E3-4110-8BBC-25F1AAC0E6B2

DOI

https://doi.org/10.5281/zenodo.4764611

persistent identifier

https://treatment.plazi.org/id/1B32387A-8302-B26F-F6D0-A4A3FE8FA601

treatment provided by

Felipe

scientific name

Isoperla sobria (Hagen)
status

 

Isoperla sobria (Hagen)

( Figs. 15 View Figs a-d)

Perla sobria Hagen 1874 .

Holotype ♀, “ Colorado mountains .”

Perla ebria Hagen 1874 .

Holotype ♀, “ Colorado mountains .”

Isoperla sobria: Szczytko & Stewart 1979 .

Male. Aedeagus: sclerotized posterior process absent; body of aedeagus typically with one anterior lobe and a pair of conical dorsal lobes ( Figs. 15 View Figs a-c); in one male collected in copula, a small posteroapical lobe was present ( Figs. 15 View Figs a-b); one long median patch of spinulae along posterior margin ( Figs. 15 View Figs a-c). 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 blunt points ( Fig. 15c View Figs ). Vesicle: lobe barely perceptible, at best represented by an area of lighter pigment ( Fig. 15d View Figs ).

Isoperla sobria is most similar to I. miwok ( Table 1 View Table 1 ), with both included in the I. sobria complex ( Bottorff et al. 1990). They differ most in the shape of the aedeagal spinule patch. In I. sobria , there is only one median patch on the posterobasal margin; in I. miwok , there is a posteroapical and a posterobasal patch, and the latter is concentrated into two nearly parallel bands. Isoperla sobria is distributed in higher elevation permanent streams in central to northcentral California. Isoperla miwok , as with I. acula and I. adunca , is usually associated with small intermittent streams of the Sierra Nevada foothills in north-central California, with one unconfirmed Lake County, Coastal Range location ( Sandberg 2011b).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Perlodidae

Genus

Isoperla

Loc

Isoperla sobria (Hagen)

Sandberg, John B. & Kondratieff, Boris C. 2013
2013
Loc

Isoperla sobria

Szczytko & Stewart 1979: 55
1979
Loc

Perla sobria

Hagen 1874: 55
1874
Loc

Perla ebria

Hagen 1874: 55
1874