Podmosta Larvae

Stewart, Kenneth W. & Stark, Bill P., 2011, Further Descriptions Of Western North American Podmosta Larvae And Their Separation From Ostrocerca Larvae (Plecoptera: Nemouridae), Illiesia 7 (10), pp. 104-117 : 113-116

publication ID

https://doi.org/ 10.5281/zenodo.4760091

DOI

https://doi.org/10.5281/zenodo.4763691

persistent identifier

https://treatment.plazi.org/id/03A687DC-FFDC-FF93-FCF8-FBAFEB5FA722

treatment provided by

Felipe

scientific name

Podmosta Larvae
status

 

Provisional Key to North American Podmosta Larvae View in CoL

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 View in CoL

1’ Distribution west of 100 th meridian …..……….. 2

2 Head with distinct, light interocellar spot ( Fig. 2 View Figs ) ………………………………………....… delicatula View in CoL

2’ Head without interocellar spot ( Fig.1 View Fig ) ……….. 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 View Figs ); widespread, Alaska south to Colorado ……………………………….. decepta View in CoL

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 View Figs ); 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 View Figs ); middle and apical cercal segments bearing 2- 4 intercalary bristles and/or fine hairs ( Fig. 50 View Figs ); Alaska and Yukon ………………………..…. weberi View in CoL

4’ Whorl bristles of proximal 10 cercal segments long, about 0.67X the length of their segment ( Fig. 47 View Figs ); middle and apical cercal segments bearing 3-7 fine intercalary hairs ( Fig. 48 View Figs ); Oregon and Washington ………………………………… obscura View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Plecoptera

Family

Nemouridae

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