Alloperla leonarda Ricker 1952
| Main Authors: | Willett, Michele R., Stark, Bill P. |
|---|---|
| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2009
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4759292 |
Daftar Isi:
- Alloperla leonarda Ricker (Figs. 13-24) Alloperla leonarda Ricker, 1952:177. Holotype ♂ (Illinois Natural History Survey), North Branch Otter River, Houghton Co., Michigan Alloperla sylvia Harden & Mickel, 1952:60. Holotype ♂ (University of Minnesota), Big Sand Creek, Pine Co., Minnesota. Syn. Ricker in Illies, 1966 Alloperla quadrata Harden & Mickel, 1952:61. Holotype ♀ (University of Minnesota), Kettle River, Pine Co., Minnesota. Syn. Surdick, 1981 Alloperla leonarda: Stark et al., 1983:56. Redescription Alloperla leonarda: Surdick, 2004:17. Redescription and distribution update Type A (13-18) Material. NS: Hants Co., Nine Mile River, Hwy 14, 23 June 1993, B.C. Kondratieff, R.W. Baumann, 4 ♂ (CSU). Epiproct. Length from base to midline of apex, ca. 129 μm. Greatest pre- apical width, ca. 29 μm; apical width, ca. 61 μm. Cowl reaching to apex of epiproct (Figs. 13-14). Dorsum of epiproct with an elevated, broadly rounded ridge covered with a densely setose, broad median band over basal 80%; epiproct bare over apex and along low marginal bands (Figs. 14-18); subapical area of epiproct bearing lateral rows of long ventrolaterally directed setae (Figs. 14-15). Width slightly constricted in dorsal aspect around midlength. Apex rounded, but with short, lateral horns curved slightly caudad in lateral aspect (Fig. 16), and projecting straight laterad in frontal aspect (Fig. 17). Type B (19-24) Material examined. MO: Christian Co., Bull Creek, Hwy W, S Ozark, 10 May 1972, B.K. Newman, 1 ♂ (BYU). Epiproct. Length from base to midline of apex, ca. 206 μm. Greatest pre- apical width, ca. 40 μm; apical width, ca. 109 μm. Cowl reaching almost to apex of epiproct (Figs. 19-20). Dorsum of epiproct densely setose over entire surface except apex and along lateral margins (Figs. 20-24); subapical area of epiproct bearing rows of long ventrolaterally directed setae (Figs. 21-23). Width constricted in dorsal aspect at fusion point with cowl and slightly narrowed beyond midlength to subapical area (Fig. 20). Apex appearing almost truncate, but rounded, and armed with lateral horns about as long as subapical width (Figs. 21, 23). Remarks. These two forms might represent distinct species, or individual variation for a species with a large geographic range. Evaluation of either hypothesis is beyond the scope of this study, but should be undertaken by someone with access to the holotype, and to a large series of specimens from throughout the presumptive range.
- Published as part of 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), pp. 108-127 in Illiesia 5 (11) on page 112, DOI: 10.5281/zenodo.4759290