Alloperla biserrata Nelson & Kondratieff

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 biserrata Nelson & Kondratieff

( Figs. 55-60 )

Alloperla biserrata Nelson & Kondratieff, 1980:802 .

Holotype ♂ (United States National Museum), tributary Craigs Creek , CR 621, Montgomery Co., Virginia

Alloperla biserrata: Surdick, 2004:12 . Redescription and distribution update

Material examined. VA: Montgomery Co., tributary Craigs Creek , CR 621, 5 June 1983, B.C. Kondratieff, 5 ♂, 1 ♀ ( BPS) .

Epiproct. Length from base to tip, ca. 178 μm. Width near base, ca. 40 μm; width near midlength, ca. 19 μm. Thickness through basal tooth, ca. 42 μm. Epiproct cowl without enlarged lobes. Epiproct widest near base, abruptly narrowed near midlength and only slightly narrowed to tip ( Fig. 56 ). Dorsum covered with closely appressed setal mat for about half of length, but apical half and basolateral areas bare ( Figs. 55-57, 60 ); apical half bearing prominent setal patches in lateral aspect ( Figs. 58-59 ), venter bare to base. Apex bearing a shallow notch in dorsal and frontal aspects and bearing six prominent teeth laterally ( Figs. 58-59 ).

Figures

Figs. 55-60. Alloperla biserrata epiproct structures, tributary Craigs Creek, Montgomery Co., VA. 55. Male terminalia, dorsal aspect. 56. Epiproct and cowl, dorsal aspect. 57. Apex of epiproct, dorsal aspect. 58. Apex of epiproct, lateral aspect. 59. Apex of epiproct, frontal aspect. 60. Detail of basal epiproct surface.