Capnia inyo Nelson & Baumann 1987

Stewart, Kenneth W., Drake, Eugene F. & Stark, Bill P., 2011, Larvae Of Five Species Of The Winter Stonefly Genus Capnia (Plecoptera: Capniidae) From California, U. S. A., Illiesia 7 (18), pp. 167-181 : 170

publication ID

https://doi.org/10.5281/zenodo.4760235

DOI

https://doi.org/10.5281/zenodo.4763853

persistent identifier

https://treatment.plazi.org/id/99668795-AE01-8006-FC3C-18E7863B7404

treatment provided by

Felipe

scientific name

Capnia inyo Nelson & Baumann 1987
status

 

Capnia inyo Nelson & Baumann 1987

( Figs. 15-19 View Figs , 32-37 View Figs )

Distribution. California.

Material examined. California: Inyo Co., Lone Pine Creek, Lone Pine Campground , N 36 ° 35.860 ’ W 118 ° 11.203 ’, Elev. 1795m, 17-18-II-2010, E. F. Drake. 33♂, 14♀, 5 reared ♂ with exuviae, 3 reared ♀ with exuviae, 1 partially emerged ♂ in larval exuviumaedeagus everted, 7♂ larvae, 22♀ larvae, 3♂ exuviae, 1♀ exuvium; water temperature on collection date GoogleMaps 3.3 ° C, snow on ground.

Characters. Body length ♂ 6.6-6.8mm, ♀ 6.9-7.2mm. Light to medium brown dorsally, ventrum lighter, little pattern except underlying muscles or developing adult pigment ( Fig. 15 View Figs ). Antennal segments 42-44, head capsule width ♂ 0.72-0.75mm, ♀ 0.84-0.0.90mm. Lacinia and mandibles as described for C. umpqua and C. ventura ( Figs. 44-48 View Figs , 50-53 View Figs ). Pronotum with setae scattered over surface and as a sparse marginal fringe ( Fig. 15 View Figs ). Mesosternal Y-arms enclose a subtriangular area about 0.3 times the intercostal width ( Fig. 16 View Figs ). Hind wingpads shallowly notched along inner margins ( Fig. 15 View Figs ); inside forewingpad length ♂ 0.96-0.99mm, ♀ 1.44-1.50mm. Femora bear scattered surface bristles, and tibia with a silky outer fringe ( Fig. 15 View Figs ). Abdominal segments with long surface hairs ( Figs. 32, 33 View Figs ). Sexual dimorphism evident. Male 10 th tergum with 0.7-0.8mm long tubular posterior extension in dorsal view ( Fig. 15 View Figs ); underlying tubular developing epiproct visible in pharate individuals ( Fig. 15 View Figs ); 10 th tergum in lateral view tubular and downcurved ( Figs. 17 View Figs , 34 View Figs ). Female without posterior extension of 10 th tergum ( Fig. 18 View Figs ). Cercal segments about 32; cercomeres with apical circlet of short and long bristles, longer dorsal and ventral bristle in lateral view, and no evident intercalary hairs ( Fig. 35-37 View Figs ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Capniidae

Genus

Capnia