Leuctra duplicata Claassen 1923
Creators: name: Grubbs, Scott A.
name: Wei, Summer
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Leuctridae
Leuctra
Leuctra duplicata

description: <i>Leuctra duplicata</i> Claassen, 1923 Atlantic Needlefly http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org: TaxonName:460988 (Figs. 1–26, 33) <i>Leuctra duplicata</i> Claassen 1923:260. Holotype &amp;male; (CUIC), Labrador Lake (Cortland or Onondaga Co.), New York <i>Leuctra duplicata</i> Needham &amp; Claassen, 1925:227. <i>Leuctra duplicata</i> Illies, 1966:88. <i>Leuctra duplicata</i> Zwick, 1973:399. <i>Leuctra duplicata</i> Hitchcock, 1974:75. <b>Male.</b> The dorsal abdominal process of the 8 th abdominal tergum emanates anteriorly, extending ca. ½ length of the segment and terminates on the posterior margin as a raised, bilobed process with small, distally rounded or subtriangular lobes (Figs. 13–15). The dorsal abdominal process of the 7 th abdominal tergum is nearer the anterior margin of the segment and raised as a bar with smaller, distally rounded lobes (Figs. 13–15). The paired dorsal processes exhibit variation, namely in the distance between lobes and “scaly” nature of the lobes that can be seen only with SEM (Figs. 13–15). The specilla are broadest medially in lateral view due to an expanded keel, noticeably thickened in dorsal ½, and taper very little distally (Figs. 1–6); the outer margin has low, tooth-like tubercles present along the outer distal &amp;frac13; (Figs. 7–12); in caudal view the basal &amp;frac13; is concave (Figs. 7–9, 11). The subanal lobes are widest basally, narrow and tapering slightly along entire length, slightly recurved anteriorly in distal ½, and extend nearly to the distal tip of the specilla (Figs. 1–6). The vesicle base is short, body expanded medially and ovoid in shape, and entire surface covered in long, socketed bristles (Fig. 16). <b>Female.</b> The 8 th abdominal sternum bears a prominent, broadly-rounded medial tubercle on the anterior ½ that occupies the medial ca. ½ of the segment (Figs. 17–26). The subgenital plate terminates in large, broadly rounded or subtriangular lobes separated by a v-shaped notch (Figs. 17–26). <b>Distribution.</b> Canada: NB, NS, ON, PE, PQ. USA: CT, MD, ME, NJ, NY, OH, PA, VA, WV (DeWalt et al. 2017), MA (Needham &amp; Claassen 1925, p. 228), NC, RI, VT (new state records).
description: Published as part of <i>Grubbs, Scott A. &amp; Wei, Summer, 2017, Morphological Systematics Of Leuctra Duplicata Claassen, 1923 Species Group (Plecoptera: Leuctridae), pp. 59-69 in Illiesia 13 (5)</i> on pages 61-63, DOI: 10.5281/zenodo.4761111
description: {"references": ["Claassen, P. W. 1923. New species of North American Plecoptera. Canadian Entomologist, 55: 257 - 263, 281 - 292.", "Illies, J. 1966. Katalog der rezenten Plecoptera. Das Tierreich No. 82. Walter de Gruyter and Company, Berlin.", "Zwick, P. 1973. Insecta: Plecoptera, Phylogenetisches System und Katalog. Das Tierreich No. 94. Walter de Gruyter and Company, Berlin.", "Hitchcock, S. W. 1974. Guide to the insects of Connecticut. Part VII. The Plecoptera or stoneflies of Connecticut. Bulletin of the State Geological and Natural History Survey of Connecticut, 107: 1 - 262.", "DeWalt, R. E., M. D. Maehr, U. Neu-Becker &amp; G. Stueber. 2017. Plecoptera Species File Online. Version 5.0 / 5.0. Accessed 20 August 2017. http: // Plecoptera. SpeciesFile. org"]}