Ostrocerca truncata ( Claassen, 1923 )

Grubbs, Scott A. & Baumann, Richard W., 2023, The Nemourinae (Insecta, Nemouridae) of the eastern Nearctic, Zootaxa 5306 (1), pp. 1-53 : 15

publication ID

https://doi.org/ 10.11646/zootaxa.5306.1.1

publication LSID

lsid:zoobank.org:pub:21AD4F85-E313-47CB-BA98-9896D2B1DC05

DOI

https://doi.org/10.5281/zenodo.8056850

persistent identifier

https://treatment.plazi.org/id/07181030-DF22-FFAC-FF12-FF68FD53F9E6

treatment provided by

Plazi

scientific name

Ostrocerca truncata ( Claassen, 1923 )
status

 

5. Ostrocerca truncata ( Claassen, 1923) View in CoL View at ENA

Truncate Forestfly

http://lsid.speciesfile.org/urn:lsid: Plecoptera .speciesfile.org:TaxonName:6135

( Figs. 37–42 View FIGURES 37‒42 )

Nemoura truncata Claassen, 1923 View in CoL . Holotype male ( Museum of Comparative Zoology ), Walden, (Middlesex Co.), Massachusetts, USA

Nemoura truncata: Needham & Claassen, 1925:218 View in CoL

Nemoura truncata: Claassen, 1940:64 View in CoL

Nemoura (Ostrocerca) truncata: Ricker, 1952:40 View in CoL

Nemoura (Ostrocerca) albidipennis: Ricker, 1965:490 View in CoL

Ostrocerca truncata: Illies, 1966:218 View in CoL

Nemoura (Ostrocerca) truncata: Harper & Hynes, 1971:1136 View in CoL

Ostrocerca truncata: Zwick, 1973:344 View in CoL

Nemoura (Ostrocerca) truncata: Hitchcock, 1974:109 View in CoL

Ostrocerca truncata: Baumann, 1975:53 View in CoL , 66 (in part)

Ostrocerca truncata: Stewart & Stark, 1988:173 View in CoL

Ostrocerca truncata: Young et al., 1989:263 View in CoL

Ostrocerca truncata: Stewart & Stark, 2002:200 View in CoL

Ostrocerca truncata: Stark, 2017:212 View in CoL

Distribution. Canada: ON, PQ. USA: AL, CT, IN, KY, MA, MD, ME, NY, OH, PA, VA, WV ( DeWalt et al. 2022)

New state records. IL: Union Co., tributary Wolf Lake , Pine Hills CG, Shawnee National Forest , 37.51724 -89.42172, 20 April 2022, 1 male, R. E. DeWalt, L. Hart ( INHS) GoogleMaps . TN: Anderson Co., tributary to New River , 11 km NW Oliver Springs, 36.1246, -84.4168, 26 March 2004, 2 males, S.A. Grubbs ( WKUC); GoogleMaps Marion Co. , tributary to South Suck Creek, 11 km ESE Whitwell, 35.1597, -85.4065, 29 May 2003, 1 female, S.A. Grubbs ( WKUC) GoogleMaps .

Male. Macropterous. Body length 4.2–5.4 mm, forewing length 5.5–6.4 mm (n = 17). Gills absent. Cerci enlarged but compact, sclerotized, and curving medially to an apical point ( Figs. 37–38 View FIGURES 37‒42 ). Paraprocts divided into a membranous outer lobe and a sclerotized, sickle-shaped inner lobe; inner lobes short, tapering along a smooth curve and divergent apically ( Fig. 40 View FIGURES 37‒42 ; Young et al. 1989, their fig. 25). Epiproct elongate and complex; dorsal sclerite smooth with a middorsal groove and ventrally with small posteriorly-projected lateral arms ( Fig. 40 View FIGURES 37‒42 ); ventral sclerite with basal, mid-dorsal groove and apically laterally expanded and bell-shaped ( Figs. 37–39 View FIGURES 37‒42 ).

Female. Macropterous. Body length 4.3–6.6 mm, forewing length 6.3–7.5 mm (n = 17). Gills absent. Cerci enlarged but unmodified ( Fig. 41 View FIGURES 37‒42 ). The 8 th sternum is enlarged as a subgenital plate and extended over the anterior margin of the 9 th sternum. The plate is broad basally, narrowing slightly such that the posterior half is approximately 3/4 of the sternum width; posterolateral corners of the plate are extended as subtriangular processes and the medial region is either straight or with a small gently-rounded medial projection ( Figs. 41–42 View FIGURES 37‒42 ). The 7 th sternum is unmodified ( Figs. 41–42 View FIGURES 37‒42 ).

Larva. Stewart & Stark (2002) provided a full habitus illustration. Partial illustrations were also given by Baumann (1975), Harper & Stewart (1996), and Stark (2017)

Comments. Similar to the other three eastern Ostrocerca species, O. truncata exhibits a widespread Appalachian distribution ( DeWalt et al. 2022) but extends further southward through Tennessee to northeastern Alabama ( Young et al. 1989) and westward across southern Ohio ( DeWalt et al. 2016) to southern Indiana ( Grubbs 2004), southern Illinois, and central Kentucky ( Grubbs et al. 2005).

CG

Embrapa Collection of Fungi of Invertebrates

INHS

Illinois Natural History Survey

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Nemouridae

Genus

Ostrocerca

Loc

Ostrocerca truncata ( Claassen, 1923 )

Grubbs, Scott A. & Baumann, Richard W. 2023
2023
Loc

Ostrocerca truncata: Stark, 2017:212

Stark, B. P. 2017: 212
2017
Loc

Ostrocerca truncata:

Stewart, K. W. & Stark, B. P. 2002: 200
2002
Loc

Ostrocerca truncata:

Young, D. C. & Kondratieff, B. C. & Kirchner, R. F. 1989: 263
1989
Loc

Ostrocerca truncata:

Stewart, K. W. & Stark, B. P. 1988: 173
1988
Loc

Ostrocerca truncata:

Baumann, R. W. 1975: 53
1975
Loc

Nemoura (Ostrocerca) truncata:

Hitchcock, S. W. 1974: 109
1974
Loc

Ostrocerca truncata:

Zwick, P. 1973: 344
1973
Loc

Nemoura (Ostrocerca) truncata:

Harper, P. P. & Hynes, H. B. N. 1971: 1136
1971
Loc

Ostrocerca truncata:

Illies, J. 1966: 218
1966
Loc

Nemoura (Ostrocerca) albidipennis: Ricker, 1965:490

Ricker, W. E. 1965: 490
1965
Loc

Nemoura (Ostrocerca) truncata:

Ricker, W. E. 1952: 40
1952
Loc

Nemoura truncata:

Claassen, P. W. 1940: 64
1940
Loc

Nemoura truncata:

Needham, J. G. & Claassen, P. W. 1925: 218
1925
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF