Taenionema pacificum (Banks)

Stewart, Kenneth W., 2009, New Descriptions Of North American Taenionema Larvae (Plecoptera: Taeniopterygidae), Illiesia 5 (12), pp. 128-145 : 134

publication ID	https://doi.org/ 10.5281/zenodo.4759332
DOI	https://doi.org/10.5281/zenodo.4759340
persistent identifier	https://treatment.plazi.org/id/AA15BF28-FFDC-CE4E-FE99-282C42C3FEF1
treatment provided by	Felipe
scientific name	Taenionema pacificum (Banks)
status

Treatment

Taenionema pacificum (Banks) View in CoL

( Figs. 13 View Figs , 22, 30, 53, 61, 73, 82, 95, 108)

Distribution. Widespread west of the 100 th Meridian (Alberta, Alaska, Arizona, British Columbia, California, Colorado, Idaho, Montana, New Mexico, Oregon, Utah, Washington, Wyoming, Yukon).

Material Examined. Alaska: Chena River near Fairbanks , 4-IV- 1968, Kreizenbeck, 5♂ nymphs, 5♀ larvae ; 10-III-1972, E.W. Shallock & W.M. Jinkinson, ♂ reared with exuvium and 1♂ and 4♀ larvae partially emerged with attached exuvia ; 3-IV- 1972, E.W. Shallock & W.M. Jinkinson , ♂ reared with exuvium, 2♀ reared with exuvia ; 11-IV-1972, E.W. Shallock W.M. Jinkinson, 29♂ larvae, 11♀ larvae, 2♂ reared with exuvia . Montana: Lincoln Co., Kootenai River , 19-III-1970, R.L. Newell , 2♂ larvae . New Mexico: Rio Arriba Co., Rio de las Vallecitos , R. Hassage , 20-III-1986, 4 reared ♂ with exuvia, 2 reared ♀ with exuvia, 1 partially emerged ♀ with exuvium attached.

Characters. Color, pigmentation ( Fig. 13 View Figs ), maxillae ( Fig. 30 View Figs ), body, leg ( Fig. 53 View Figs ) and cercal setation, and sexual dimorphism ( Figs. 61 View Figs , 73 View Figs , 82 View Figs ) generally typical of genus. Body length ♂ 8.5- 10 mm, ♀ 9-11 mm. Antennal segments ♂ 64-68, ♀ 64-68. Cercal segments ♂ 46-58, ♀ 44-58. Male 9 th sternum ( Fig. 95 View Figs ) ovate with posterolateral sides convex and apex narrowly rounded. Female 9 th sternum ( Fig. 108 View Figs ) narrower than ♂, triangulate behind greatest width with nearly straight sides, and pointed apex.