Alloperla caudata Frison, 1934

Willett, Michele R. & Stark, Bill P., 2009, The Alloperla Leonarda Group Of Eastern North America, With Sem Images Of Four Out-Group Species (Plecoptera: Chloroperlidae), Illiesia 5 (11), pp. 108-127 : 121

Alloperla caudata Frison

Alloperla caudata Frison, 1934:27 .

Holotype ♂ (Illinois Natural History Survey), Adair Co., Oklahoma Alloperla caudata: Surdick, 2004:13 . Redescription and distribution update

Alloperla caudata: Baumann & Kondratieff, 2009:100 . SEM of epiproct

Images prepared by M.H. Lyon from the following material are in the Stark collection; additional images prepared recently from Mississippi specimens are very similar to those presented by Baumann & Kondratieff (2009).

Material examined. AL: Colbert Co., Henson Creek , Hwy 49, 5 June 1985, S.C. Harris, 2 ♂, 4 ♀ ( BPS) . MO: La Clede Co., Brush Creek , Hwy PP, date not given, B.C. Poulton, 3 ♂ ( BPS) . MS: Tishomingo Co., Clear Creek , Hwy 172, 18 May 2009, B. Stark, 19 ♂, 14 ♀ ( BPS) . OK: Cherokee Co., Barron Fork Creek , 3 June 1984, W.D. Shepard, 1 ♂ ( BPS) .

Epiproct. Length from base to tip, ca. 235-244 μm. Greatest width, ca. 90-109 μm. Greatest thickness, ca. 100 μm. Apical cap diameter, ca. 50 μm. Epiproct cowl without enlarged lobes but cowl extending almost to midlength; epiproct slightly widened from base to subapex, and slightly narrowed to bare apical cap; apex bearing a prominent, bare, sclerotized cap offset from body of epiproct by a groove, and not expanded on venter. Lateral aspect of epiproct inflated to apical third and narrowed beyond to cap. Entire surface of epiproct covered by a dense, closely appressed, setal mat.

Remarks. The Mississippi specimens represent a new state record for this species.