Allocapnia Claassen 1928
Creators: name: Nations, Tina M.
name: Stark, Bill P.
name: Hicks, Matthew B.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Capniidae
Allocapnia

description: Genus <i>Allocapnia</i> Claassen, 1928 <b>Type species</b>. <i>Allocapnia granulata</i> (Claassen) <b>Distribution.</b> An eastern Nearctic endemic genus found from the southern Maritime Provinces of Canada to the Gulf Coastal States and westward to the Wichita Mountains of Oklahoma and the eastern countiesof the Dakotas (Kirchner et al. unpublished). <b>Diversity.</b> <i>Allocapnia</i> currently includes 44 species (Stark &amp; Baumann 2006) with seven recognized for Mississippi. The following keys modified from Kirchner et al. (unpublished) will assist in the identification of adult specimens. Most Mississippi nymphal specimens can be identified using Stark &amp; Lacey (2005). Key to Adult Mississippi <i>Allocapnia</i> (Modified from Kirchner et al. unpublished) 1 Tip of abdomen bearinga dorsalepiproct (Figs. 4&amp;hyphen; 5), and a dorsal process on abdominal segment 8 (Fig. 7); wings not reaching tip of abdomen ……………………………………………… males (2) 1’ Tip of abdomen without dorsal epiproct and process on tergum 8, butwith a conspicuous pale, unsclerotized dorsal band extending from abdominalbase to segment 8; abdominalsternum 8 modified to form a small subgenital plate (Fig. 9); wings usually reaching almost to, or slightly beyond tip of abdomen …………….... females (8) 2 Tergal process on segment 8 with a wide, conspicuous notch (Fig. 14) ……………………... 3 2’ Tergal process on segment 8 without notch (Fig. 28), or with a narrow inconspicuous notch (Fig. 21) ………………………………………………… 5 3 Tergum 8 with a small membranous, hairy knob located posterolaterad of each lobe of dorsal process (Figs. 12&amp;hyphen;14) …………………… <i>granulata</i> 3’ Tergum 8 without membranous hairy knob behind lobes of dorsal process …………………. 4 4 Dorsal process of tergum 8 more or less chair shaped in lateral aspect; notch moderately deep but not extending to level of tergum 7 (Figs. 5, 7) ………………………………………………… <i>aurora</i> 4’ Dorsal process of tergum 8 not chair shaped in lateral aspect; notch of process deep, extending to levelof tergum 7 (Fig. 33, 36) ……………… <i>rickeri</i> 5 Dorsalprocessof tergum 8 large, flat, cushion&amp;hyphen; like and bearinga second, small, ridge&amp;hyphen; like processon anterior margin of tergum 8 (Figs. 49&amp;hyphen;50; apical segment of epiproct upper limb wide (Fig. 46) ………….…………………………….… <i>virginiana</i> 5’ Dorsal process of tergum 8 variable but not as above; apical segment of epiproct upper limb narrower (Fig. 18) ……………………………….. 6 6 Dorsal process of tergum 8 with a narrow notch (Fig. 21) ……………………….…………… <i>mystica</i> 6’ Dorsalprocessof tergum 8 withoutnotch (Fig. 28) ……………………………………………………... 7 7 Anterior margin of dorsal process of tergum 8 bent abruptly near apex in lateral aspect (Fig. 29); dorsal aspect of 8 th tergal process a thin, almost straight, transverse ridge (Fig. 28) ……. <i>polemistis</i> 7’ Anterior margin of dorsalprocessof tergum 8 not bent (Fig. 43); dorsal aspect of 8 th tergal process U or V&amp;hyphen; shaped ………………………………….. <i>starki</i> 8 Abdominal sterna 7 and 8 at least partially fused by a distinct transverse sclerotized area (Figs. 9, 37) …………………………………………………. 9 8’ Abdominal sterna 7 and 8 separated by membrane (Fig. 16) …………………………….. 10 9 Sclerotized bridge between abdominal sterna 7 and 8 with conspicuous lateral membranous notches (Figs. 37, 63) ………………………. <i>rickeri</i> 9’ Sclerotized bridge between abdominal sterna 7 and 8 folded under posterior margin of sternum 7 forming a thin, dark line without lateral notches (Figs. 9, 59) ………………………………….. <i>aurora</i> 10 Projectingsubgenitalplatewithsmallbasolateral notches (Figs. 16, 60) …..……………..… <i>granulata</i> 10’ Subgenital plate, if projecting, without basolateral notches (Fig. 30) ……………………………….… 11 11 Subgenital platescarcely projecting beyondlateral margins of sternum 8 (Figs. 30, 62); known from Tishomingo Co ………………….……… <i>polemistis</i> 11’ Subgenital plate at least slightly projecting beyond lateral margins of sternum 8 (Fig. 44); found more or less statewide ………………….. 12 12 Subgenital plate broadly arcuate (Figs. 51, 65) ……………………….…………………… <i>virginiana</i> 12’ Subgenital platenarrow (Fig. 44) ………….…... 13 13 Base of subgenital plate with a pair of small, mesal lobes (Fig. 64)..………………….……. <i>starki</i> 13’ Base of subgenital plate without small, mesal lobes (Fig. 61) ……………………….……… <i>mystica</i>
description: Published as part of <i>Nations, Tina M., Stark, Bill P. &amp; Hicks, Matthew B., 2007, The Winter Stoneflies (Plecoptera: Capniidae) Of Mississippi, pp. 70-94 in Illiesia 3 (9)</i> on pages 72-73, DOI: 10.5281/zenodo.4759885
description: {"references": ["Claassen, P. W. 1928. Additions and corrections to the monograph on the Plecoptera of North America.", "Stark, B. P. &amp; R. W. Baumann. 2006. Valid stonefly names for North America (http: // plsa. inhs. - uiuc. edu / plecoptera / validnames. aspx).", "Stark, B. P. &amp; J. W. Lacey. 2005. Larvae of the winter stonefly genus Allocapnia (Plecoptera: Capniidae) in Mississippi, USA. Illiesia, 1: 10 - 20."]}