Alloperla atlantica Baumann, 1974

Stark, Bill P. & Kondratieff, Boris C., 2010, Larvae Of Eight Eastern Nearctic Alloperla Species (Plecoptera: Chloroperlidae), Illiesia 6 (20), pp. 267-276 : 269

Alloperla atlantica Baumann

( Figs. 1-5 )

Alloperla atlantica Baumann, 1974:260 .

Holotype ♂ (United Stated National Museum), Maryland, Frederick Co., Fishing Creek , Mountaindale

Material examined. New York: Hamilton Co., West Stony Creek, Hwy 30, North of Grant , Sacandaga Lake , 5 June 1997, B.C. Kondratieff, R. W. Baumann, 111♂, 42♀, 9 field associated larval skins ( CSU) . North Carolina: Burke Co., Jacob’s Fork, Old NC Hwy 18, South of Pleasantford , 35.59° N, 81.57° W, 3 May 2005, B.C. Kondratieff, R.F. Kirchner, R.E. Zuellig, D.R. Lenat, 1♂, 2♀, 2 pharate larvae ( CSU).

Mature larva. Body length 7.5-8.5 mm. General body color brown without distinctive pattern. Head slightly paler forward of median ocellus ( Fig. 1 ). Anterior pronotal margin with about 6-10 moderately long setae at corners and posterior margin with a pair of long setae at corners ( Fig. 1 ). Mesonotal wingpads with ca. 15-20 outer marginal setae, metanotal wingpads with ca. 20 outer marginal setae beyond apex of mesonotal wingpad; inner marginal setae apparently absent ( Fig. 2 ). Forelegs without ventral tibial fringes ( Fig. 4 ), but mid and hind legs with sparse ventral tibial fringes. Abdominal terga without mesal pale spots; posterior tergal fringes consist of short thick setae with interspersed long thin setae (ca. 6 on each segment); patches of intercalary setae located laterally on each segment but absent on dorsum of segments ( Fig. 3 ). Cerci consisting of 15-16 apparent segments ( Fig. 5 ), vertical fringe developed on segments 12-16; longest dorsal setae in segmental whorls of mid cercal segments about as long as segment.

Figures

Figs. 1-5. Alloperla atlantica larval structures. 1. Head and pronotum. 2. Mesonotum and metanotum. 3. Abdominal terga 8-9. 4. Right foreleg. 5. Lateral aspect of cercus, dorsum left.