Lednia
Creators: name: Baumann, Richard W.
name: Kondratieff, Boris C.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Nemouridae
Lednia

description: <i>Lednia</i> (Ricker) 1952 <i>Lednia</i> Ricker, 1952: 29. Type species: <i>Nemoura</i> (<i>Lednia) tumana</i> (Ricker), by monotypy. Illies, 1966: 190 (generic status). Baumann, 1975: 19, 50 (redescription and illustrations). Baumann et al. 1977: 34 (distribution). DESCRIPTION <b>Adult.</b> Size small, length 4.5-7.5 mm. Wings macropterous, venation typical for family, mostly hyaline, with dark veins near cord. Gills absent. <b>Male.</b> Epiproct with ventral sclerite sclerotized, flat, broad and pointed at apex, extending beyond anterior margin of dorsal sclerite, bearing few small ventrolateral spines near apex, tip sharply pointed and grooved dorsally; dorsal sclerite grooved mesally and bilaterally symmetrical, bearing small to large posteriorly directed dorsolateral spines (Figs. 1- 3, 5-6, 8-9, 13, 15-18, 23, 25-28). Paraprocts composed of two lobes, inner lobe long and thin and heavily sclerotized, with sharply pointed apex (Figs. 11, 19, 29); outer lobes, short broadly rounded and lightly sclerotized (Fig. 20). Hypoproct broad at base and becoming narrower towards apex, vesicle absent (Figs. 11, 19, 29). Cerci unmodified (Figs. 1, 3, 5, 8, 15, 25, 29). Tergum ten with median groove, bordered by paired mace-shaped prongs bordering tip of epiproct (Figs. 1, 3, 8, 10, 16, 21, 30). <b>Female.</b> Sternum eight modified as subgenital plate, median area darkly sclerotized, broad basally and narrowing to apex, forming a generally triangular shape, apex narrowly rounded apically, but sometimes with a narrow slit at tip, lateral posterior margins with darkly sclerotized lobes that parallel the apex of subgenital plate (Figs. 4, 12, 14, 22, 24, 31, 32). Sternum seven with lightly sclerotized, round lobe near margin of sternum eight (Figs. 4, 12, 14, 24, 31). <b>Larva.</b> Gills absent. Pronotum elongate, with narrow lateral discs. Body of nymph with relatively few spines present, most spines found dorsally at anterior margins of thoracic segments and anterior abdominal segments. Legs bearing few, mostly small spines, except for 3-5 larger spines that occur on dorsal margin of femur. Cerci with whorls of spines at distal margins of segments. Few small intercalary spinules present on all segments. Mature female larvae exhibiting a vesicle-like lobe on sternum eight. For a more complete description see Stewart and Stark (2002).
description: Published as part of <i>Baumann, Richard W. &amp; Kondratieff, Boris C., 2010, The Stonefly Genus Lednia In North America (Plecoptera: Nemouridae), pp. 315-327 in Illiesia 6 (25)</i> on page 316, DOI: 10.5281/zenodo.4753201
description: {"references": ["Ricker, W. E. 1952. Systematic studies in Plecoptera. Indiana University Publications, Science Series 18. 200 pp.", "Illies J. 1966. Katalog der rezenten Plecoptera. Das Tierreich 82, Walter de Gruyter &amp; Co. Berlin. 632 pp.", "Baumann, R. W. 1975. Revision of the stonefly family Nemouridae (Plecoptera): A study of the world fauna at the generic level. Smithsonian Contributions to Zoology, 211. 74 pp.", "Baumann, R. W., A. R. Gaufin, and R. F. Surdick. 1977. The stoneflies (Plecoptera) of the Rocky Mountains. Memoirs of the American Entomological Society, 31. 208 pp.", "Stewart K. W. and B. P. Stark. 2002. Nymphs of North American stonefly genera (Plecoptera). The Caddis Press, Columbus, Ohio. 510 pp."]}