Allocapnia aurora Ricker, 1952
publication ID |
https://doi.org/ 10.5281/zenodo.4754442 |
DOI |
https://doi.org/10.5281/zenodo.4757097 |
persistent identifier |
https://treatment.plazi.org/id/03988630-A20E-FFE9-FEC2-F9415AD18A9F |
treatment provided by |
Felipe (2021-05-12 18:15:37, last updated 2024-11-27 13:43:35) |
scientific name |
Allocapnia aurora Ricker |
status |
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Allocapnia aurora Ricker View in CoL
Allocapnia aurora Ricker (1952) View in CoL . Holotype ♂, Pigeon River, Woodrow , North Carolina
Distribution. AL, DC, GA, MD, MS, NC, PA, SC, TN, VA ( Stark 2001). Mississippi populations have
been reported from Amite, Franklin, Lauderdale and Tishomingo counties ( Alford 1998; Stark 1979). A new record is given for Clarke County.
Material examined. Mississippi: Clarke Co., Little Okatuppa Creek , Hwy. 18, 7 December 2002, 2 ♂, 22 larvae, B. Stark. Same location, 18 December 2002, 19 larvae, B. Stark, J. Lacey. Same location, 29 December 1999, 1♀, B. Stark. Same location, 18 January 2003, 1♂, 4 larvae, B. Stark, W. Hawkins, S. Cope. Same location, 8 January 2005, 1♂, B. Stark .
Male genitalia. Previously described from scanning electron micrographs by Alford (1998). Dorsal arm of epiproct bent near midlength, apical shape similar to a spear point; apex of dorsal limb engraved with a pattern of smooth, scalloped ridges ( Figs. 1-2 View Figs ). Dorsal process of tergum 8 deeply divided by a wide Ushaped notch; tergum 7 with an obscure mound shaped process near anterior margin.
Pre-emergent larva. Body length 6.0-7.5 mm. General body color pale brown to tan, without distinctive pattern. Mandibles, laciniae and labium ( Fig. 3 View Figs ) typical of genus; galea armed on apex with a few acute spines; outer margin of galea without fringe of long setae ( Fig. 4 View Figs ). Developing lobe of male tergum 10 distal to cercal bases more than twice as long as tergum length proximal to cercal bases ( Fig. 5 View Figs ); dorsal margin of developing male lobe straight but with slight subapical elevation; posterior margin slanted in lateral aspect. Abdominal terga sparsely covered with clothing hairs and decumbent bristles; erect bristles restricted to posterior tergal margins ( Fig. 6 View Figs ); longest erect bristles about 0.4 times as long as tergum.
Diagnosis. The presence of erect bristles only on the posterior margins of abdominal terga ( Fig. 6 View Figs ) will distinguish nymphs of this species from all those occurring in Mississippi except A. mystica . In that species the posterior margin of the developing male 10 th tergal lobe is truncate in lateral aspect rather than slanted ( Fig. 5 View Figs ).
Alford, M. H. 1998. New records of Allocapnia (Plecoptera: Capniidae) from Mississippi and Louisiana, with accompanying scanning electron micrographs. Entomological News, 109: 183 - 188.
Ricker, W. E. 1952. Systematic studies in Plecoptera.
Stark, B. P. 1979. The stoneflies (Plecoptera) of Mississippi. Journal of the Mississippi Academy of Sciences, 24: 109 - 122.
Stark, B. P. 2001. North American stonefly list, updated as of February 16, 2001. http: // www. mc. edu / campus / users / stark / sfly 0102. html.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Allocapnia aurora Ricker
Stark, Bill P. & Lacey, Joe W. 2005 |
Allocapnia aurora
Ricker 1952 |
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