Allocapnia granulata Claassen

Nations, Tina M., Stark, Bill P. & Hicks, Matthew B., 2007, The Winter Stoneflies (Plecoptera: Capniidae) Of Mississippi, Illiesia 3 (9), pp. 70-94 : 75-77

Allocapnia granulata Claassen

Capnella granulata Claassen, 1924 . Holotype male, Johnstown , New York

Allocapnia granulata: Ross & Ricker, 1971 . Mississippi record

Distribution. AL, AR, DC, IA, IL, IN, KS, KY, LA, MB, MD, MI, MN, MO, MS, NJ, NY, OH, OK, ON, PA, PQ, TN, TX, VA, WI, WV ( Stark & Baumann 2006). The published Mississippi record is from a single femalespecimen housed in the Illinois Natural History Survey, and collected in Marshall County in 1941 ( Ross & Ricker 1971; Stark 1979). Several efforts to recollect the species from streams in the Potts Camp area have been unsuccessful but populations were discoveredat four sites in Noxubee County and Kemper County during December 2006.

Mississippi collection data. ( Fig. 10 ). Kemper Co., Shy Hammock Creek, Hwy 16, 32 ° 49’ 85.8” N, 88 ° 23’ 74.7” W, 28 December 2006, M. Hicks, 1 ♂, 1 ♀; Samelocation, 12 January 2007, B. Stark, 1 ♀; Pushacoona Creek , Hwy 16, 32 ° 49’ 77.5” N, 88 ° 25’ 20.0” W, 28 December 2006, M. Hicks, 25 ♂, 10 ♀; Samelocation, 12 January 2007, B. Stark, 11 ♂, 5 ♀; Bodka Creek , Hwy 45, 28 December 2006, M. Hicks, 1 ♀; Marshall Co. , Potts Camp, 17 February 1941, no collector known, 1 ♀ (Illinois Natural History Survey). Noxubee Co., Shuqualak Creek, Hwy 45, 20 December 2006, M. Hicks and M. Howarter, 7 ♂, 2 ♀. Male epiproct. Epiproct dorsal arm conspicuously angled near midlength, becoming slightly wider subapically and forming a more or less paddle shaped apical section ( Fig. 11 ). Apical half of dorsal arm bears numerous, short, spiny projections ( Fig.13 ); projections become smaller and more sparsely distributed toward apical section base. In dorsal aspect a median, narrow, shallow groove divides apical section of dorsal arm ( Figs.11, 13 ). In lateral aspect, dorsal arm slightly inflated and densely spinose near tip, ventral arm slightly recurved and smooth at apex ( Fig.12 ).

Allocapnia granulata

Male tergal process. Tergum 8 process deeply notched in dorsal aspect, forming a pair of elongate knobs in V‐ shaped pattern ( Fig.14 ); knobs armed with scale‐ like tubercles and an additional small, hairy scaleless knob is located behind larger scaled knobs. In lateral aspect, scaled knobs are low at anterior margin and are slanted upward toward projecting, hairy, posterior knobs ( Fig.15 ).

Female subgenital plate. Abdominalsternum 8 bears a slightly projecting median plate with low mesal point and base constricted by small lateral notches ( Figs.16 , 60 ). Sterna 7 and 8 completely separated by membrane.

Figures

Fig. 10. Distribution of Allocapnia granulata in Mississippi.

Figs. 11‐16. Allocapnia granulata, Noxubee Co., Shuqualak Creek, Hwy 45. 11. Epiproct, dorsal, 12. Epiproct, lateral, 13. Epiproct tip, 14. Male tergum 8 and dorsal process, 15. Male tergum 8, lateral aspect, 16. Female abdominal sterna 7‐9.

Figs. 59‐62. Female terminalia. 59. Allocapnia aurora, 60. Allocapnia granulata, 61. Allocapnia mystica, 62. Allocapnia polemistis. fl = fusion line; sgp = subgenital plate.