Amphinemura alabama Baumann
Creators: name: Stark, Bill P.
name: Harrison, Audrey B.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Nemouridae
Amphinemura
Amphinemura alabama

description: <i>Amphinemura alabama</i> Baumann (Figs. 1-5) <i>Amphinemura alabama</i> Baumann, 1996:249. Holotype ♂ (United States National Museum), Alabama, Limestone Co., Cairo Branch, Elk River <b>Material examined.</b> <b>MISSISSIPPI: Tishomingo Co</b>.: Clear Creek, Hwy 172, 34.37° N, 88.12° W, 18 May 2009, B. Stark, 3♂, 1♀ (BYU). Same site, 12 May 2010, B. Stark, 1♂, 3♀, 6 larvae (BPS). Clear Creek, Blythe Crossing, 12 May 2010, B. Stark, 1♀ (BPS). <b>Mature Larva.</b> Body length ca. 7-7.5 mm. General color pale brown to brown, without distinctive pattern. Outer prosternal gills consisting of 6-7 long, robust branches arranged in a apical whorl from a basal trunk. Pronotal margins almost entirely fringed with stout setae; anterior margin with short setae near median suture with longer ones near anterolateral corners. Lateral pronotal margins with mostly longer setae; posterior margins poorly fringed (Fig. 1). Mesonotum without conspicuous basolateral setae but fine outer marginal setae occur in the apical area (Fig. 2). Fore femur with a few apical fringe hairs and a cluster of thick setae beyond midlength (Fig. 3); ventral margin without conspicuous setation; tibial fringe sparse. Abdominal terga 8-9 with several long setae in posterior segmental fringe, but intercalary setae sparse or absent (Fig. 4). Cerci with ca. 23 segments, setal whorls well developed from about segment 6 to apical segment with longest setae on segments 12-19 (Fig. 5); longest cercal setae reach almost entire length of segment; segments beginning with ca.12 have intermediate fine setae arranged in irregular whorl pattern. <b>Comments.</b> This species was previously known from Alabama (Baumann 1996) and Kentucky (Tarter et al. 2006), and, as indicated in the introduction, we suspect the female specimen from Tupelo determined as <i>A. delosa</i> by Stark (1979) might also represent this species. Unfortunately, that specimen was in the Bryant Mather collection and we are not certain where it was deposited after his death. The larvae of <i>A. alabama</i> are very similar to those of <i>A. nigritta</i> but, in specimens examined, the setal whorls on most segments are comprised almost entirely of long setae, whereas in <i>A. nigritta</i> specimens, the smaller number of long setae are interspersed with a few short setae. In addition, the posterior setal whorls on abdominal terga 8-9 are more robust in <i>A. alabama</i> than in <i>A. nigritta.</i> Because the sample size for associated larvae of each of these species is small, these setal characters will need to be evaluated as more material becomes available.
description: Published as part of <i>Stark, Bill P. &amp; Harrison, Audrey B., 2010, The Larva Of Amphinemura Alabama Baumann And New Records Of Nemouridae (Plecoptera) From Mississippi, U. S. A., pp. 234-240 in Illiesia 6 (16)</i> on pages 235-236, DOI: 10.5281/zenodo.4759983
description: {"references": ["Baumann, R. W. 1996. Three new species of Amphinemura (Plecoptera: Nemouridae) from eastern North America. Entomological News, 107: 249 - 254.", "Tarter, D. C., D. L. Chaffee &amp; S. A. Grubbs. 2006. Revised checklist of the stoneflies (Plecoptera) of Kentucky, U. S. A. Entomological News, 117: 1 - 10.", "Stark, B. P. 1979. The stoneflies (Plecoptera) of Mississippi. Journal of the Mississippi Academy of Sciences, 24: 109 - 122."]}