Allocapnia virginiana Frison 1942
Creators: name: Stark, Bill P.
name: Lacey, Joe W.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Capniidae
Allocapnia
Allocapnia virginiana

description: Allocapnia virginiana Frison <i>Allocapnia virginiana</i>Frison (1942). Holotype &amp;male;, Rapidan River, Shelby, Virginia <b>Distribution.</b> AL, DE, GA, LA, MS, NC, SC, VA (Stark 2001). Mississippi, populations have been reported from Amite, Franklin, Lauderdale, Simpson and Wilkinson Counties (Alford 1998; Stark 1979). New records are given for Lowndes, Newton and Tishomingo Counties. <b>Material examined.</b> Mississippi: Lowndes Co., Mayhew Creek, Hwy. 12, 29 December 1998, 3 &amp;male;, B. Stark. Newton Co., Tallahatta Creek, Dean Road, 9 December 2000, 8 &amp;male;, B. Stark. Same location, 18 December 2002, 26 &amp;male;, B. Stark, J. Lacey. Simpson Co., Mill Creek, Hwy. 472, 11 December 2002, 5 &amp;male;, 14 larvae, B. Stark, J. Lacey. Same location, 10 January 2002, 3 &amp;male;, B. Stark. Same location, 3 December 2002, 4 &amp;male;, 15 larvae, B. Stark. Simpson Co., Westville Creek, Hwy. 43, 2 December 2000, 14 &amp;male;, B. Stark. Tishomingo Co., Little Cripple Deer Creek, Hwy 957, 4 January 2000, 39 &amp;male;, B. Stark, M. Alford. Tishomingo Co., Jourdan Creek, Hwy. 4, 3 January 2000, 2 &amp;male;, B.Stark, M. Alford. Tishomingo Co., Pennywinkle Creek, Hwy. 191, 3 January 2000, 1 &amp;male;, B. Stark, M. Alford. <b>Male genitalia.</b> Described from scanning electron micrographs by Alford (1998). Dorsal arm of epiproct without conspicuous bend at midlength; apical half broad, flat and surface covered with pattern of fine, longitudinal grooves (Figs. 23-24). Dorsal process of tergum 8 consisting of a small erect ridge near anterior margin and a larger cushion shaped structure near posterior margin. <b>Pre-emergent larva.</b> Body length 6.0-7.5 mm. Body color pale brown to tan, without distinctive pattern. Abdominal sternal folds (Figs. 25-26), mandibles, laciniae and labium (Fig. 27) typical of genus; galea armed on apex with a few acute spines; outer margin of galea without fringe of long setae (Fig. 28). Ventral aspect of labium with tufts of long setae at intervals along the margin (Figs. 29-30). Developing lobe of male tergum 10 distal to cercal bases about 1.3 times as long as tergum length proximal to cercal bases (Fig. 31); dorsal margin of developing male lobe straight with slight pre-apical dip; posterior margin rounded with dorsal apex extending well beyond ventral apex. Abdominal terga sparsely covered with clothing hairs and decumbent bristles; erect bristles present at posterior tergal margins and at midlength (Fig. 32); longest erect bristles about half as long as tergum. <b>Diagnosis.</b> Among the other species whose larvae display erect or semi-erect bristles at midlength of most abdominal terga (<i>A. granulata, A. rickeri, A. starki</i>) the larvae of <i>A. virginiana</i> are distinguished from <i>A. rickeri</i> by virtue of a straight dorsal margin of developing male tergum 10 (Fig. 31), and from the others in having the posterolateral aspect of this structure slanted rather than truncate.
description: Published as part of <i>Stark, Bill P. &amp; Lacey, Joe W., 2005, Larvae Of The Winter Stonefly Genus Allocapnia (Plecoptera: Capniidae) In Mississippi, Usa, pp. 10-20 in Illiesia 1 (3)</i> on pages 16-19, DOI: 10.5281/zenodo.4754442
description: {"references": ["Frison, T. H. 1942. Studies of North American Plecoptera with special reference to the fauna of Illinois. Bulletin of the Illinois Natural History Survey, 22: 236 - 355.", "Stark, B. P. 2001. North American stonefly list, updated as of February 16, 2001. http: // www. mc. edu / campus / users / stark / sfly 0102. html.", "Alford, M. H. 1998. New records of Allocapnia (Plecoptera: Capniidae) from Mississippi and Louisiana, with accompanying scanning electron micrographs. Entomological News, 109: 183 - 188.", "Stark, B. P. 1979. The stoneflies (Plecoptera) of Mississippi. Journal of the Mississippi Academy of Sciences, 24: 109 - 122."]}