Podmosta Larvae

• Main Authors: Stewart, Kenneth W., Stark, Bill P.
• Format: Text
• Language: unknown
• Published: Zenodo 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Plecoptera; Nemouridae; Podmosta; Harper; Yukon; Newfoundland; Alaska
• Online Access: https://dx.doi.org/10.5281/zenodo.4763691; https://zenodo.org/record/4763691

Provisional Key to North American Podmosta Larvae Podmosta macdunnoughi (Ricker) was partially described by Ricker (1947) and Harper & Hynes (1971). Details of the cercal intercalaries are difficult to see at 50X with a dissecting light microscope, and therefore require SEM. 1 Distribution east of 90 th meridian … macdunnoughi 1’ Distribution west of 100 th meridian …..……….. 2 2 Head with distinct, light interocellar spot (Fig. 2) ………………………………………....… delicatula 2’ Head without interocellar spot (Fig.1) ……….. 3 3 Whorl bristles of middle and anteapical cercal segments short, at most, ca. 0.20X the length of their segment, and bearing 2- 3 intercalary hairs as seen laterally (Fig. 44); widespread, Alaska south to Colorado ……………………………….. decepta 3’ Whorl bristles of middle and anteapical cercal segments long, 0.35-0.80X the length of their segment, and bearing variable number of intercalaries up to 7 (Figs. 48, 50); Alaska-Yukon and south to Oregon ……………..………………. 4 4 Whorl bristles of proximal 10 cercal segments short, ca. 0.25X length of their segment (Fig. 49); middle and apical cercal segments bearing 2- 4 intercalary bristles and/or fine hairs (Fig. 50); Alaska and Yukon ………………………..…. weberi 4’ Whorl bristles of proximal 10 cercal segments long, about 0.67X the length of their segment (Fig. 47); middle and apical cercal segments bearing 3-7 fine intercalary hairs (Fig. 48); Oregon and Washington ………………………………… obscura : Published as part of Stewart, Kenneth W. & Stark, Bill P., 2011, Further Descriptions Of Western North American Podmosta Larvae And Their Separation From Ostrocerca Larvae (Plecoptera: Nemouridae), pp. 104-117 in Illiesia 7 (10) on pages 113-116, DOI: 10.5281/zenodo.4760091 : {"references": ["Ricker, W. E. 1947. Stoneflies of the Maritime Provinces and Newfoundland. Transactions of the Royal Canadian Institute, 26: 401 - 414."]}