Capnia ventura Nelson & Baumann 1987
| Autor: | Stewart, Kenneth W., Drake, Eugene F., Stark, Bill P. |
|---|---|
| Rok vydání: | 2011 |
| Předmět: | |
| DOI: | 10.5281/zenodo.4763858 |
| Popis: | Capnia ventura Nelson & Baumann 1987 (Figs. 12-14, 50-55, 60, 61) Distribution. California. Material examined. California: Orange Co., Silverado Creek, Silverado Canyon, concrete low water crossing about 4.67km above Forest Service Fire Gate, N 33 ° 44.43 ’ W 117 ° 32.44 ’, 6-IV-2004, K.W. Stewart and E.F. Drake, 4♂, 7♀, 5♂ larval exuviae, 10♀ larval exuviae (adults and exuviae all together on a floating board), 11♀ larvae. Silverado Creek, 91.4m above Forest Service Fire Gate, 574.5m Elev., N 33 ° 44.55 ’ W 117 ° 34.56 ’, 9-II-2005, E.F. Drake, 2♂, 4♂ larvae, 23♀ larvae. Same locality, 10-III-2005, E.F. Drake, 1♂ larva, 9♀ larvae. Same locality, 25-III-2005, E.F. Drake, 1♂ larva, 6♀ larvae. Same locality, 18-II- 2006, E.F. Drake, 3♂ reared with exuviae, 4♀ reared with exuviae. Same locality, 20-22-II-2006, 2♂, 3♀. Characters. Body length ♂ 6.4-7.0mm, ♀ 7.2-7.3mm. Light to medium brown dorsally, ventrum lighter, little pattern except underlying muscles or adult pigment. Antennal segments ♂ 48-50, ♀ 48-52, head capsule width ♂ 0.75-0.81mm, ♀ 0.78-0.90mm. Lacinia triangular, palmate with longitudinally striate palm surface, broad apical teeth, ventral comb of about 10 bristles and dorsal comb of 16-18 longer bristles (Figs. 50, 51). Right mandible with apical teeth, molar pad of dense stiff bristles, and inner band of hairs from base of apical teeth to molar pad (Fig. 52). Left mandible with molar cup bordered by outer (dorsal) comb of curved teeth (Fig. 53). Pronotum with scattered setae over surface and as a marginal fringe (like Fig. 1). Mesosternal Y-arms and shallowly notched hind wingpads typical of genus; inside fore wingpad length ♂ 0.90-0.96mm, ♀ 1.02- 1.08mm. Leg setation typical of genus (like Figs. 2, 3). Abdominal segments with long surface and posterior fringe hairs (Fig. 57). Sexual dimorphism evident. Male with posterior extension of 10 th tergum nippleshaped in dorsal view with underlying developing tubular epiproct visible in pharate individuals (Fig. 12); 10 th tergum in lateral view with emarginated sides, cross-striated basal half, and narrowing apically (Figs. 54, 55). Female without posterior extension of 10 th tergum (Fig. 13). Cercal segments ♂ 30-32, ♀ 32; cercomeres with apical circlet of short and long bristles, longer dorsal and ventral bristle in lateral view, and no intercalary hairs (Figs. 60, 61). Published as part of 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., pp. 167-181 in Illiesia 7 (18) on pages 175-178, DOI: 10.5281/zenodo.4760235 {"references":["Nelson, C. R. & R. W. Baumann. 1987. New winter stoneflies of the genus Capnia with notes and an annotated checklist of the Capniidae of California (Plecoptera: Capniidae). Entomography, 5: 485 - 521."]} |
| Databáze: | OpenAIRE |
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