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First record of harpacticoid copepods from Lake Tahoe, United States: two new species of Attheyella (Harpacticoida, Canthocamptidae).

Authors
  • Bang, Hyun Woo1
  • Baguley, Jeffrey G1
  • Moon, Heejin1
  • 1 Department of Biology, University of Nevada Reno, Reno, Nevada 89557, USA.
Type
Published Article
Journal
ZooKeys
Publisher
Pensoft Publishers
Publication Date
Jan 01, 2015
Issue
479
Pages
1–24
Identifiers
DOI: 10.3897/zookeys.479.8673
PMID: 25685014
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Benthic harpacticoids were collected for the first time at Lake Tahoe, California-Nevada, United States. Two species were identified as members of the genus Attheyella Brady, 1880. The genus Attheyella comprises about 150 species within six subgenera, but only twelve species have previously been reported from North American freshwater habitats. The two new species of Attheyella described here have a 3-segmented endopod on P1 and 2-segmented P2-P4 endopods, the distal segment of exopod of P2-P4 has three outer spines, and the P5 has five setae on the exopod and six setae on the baseoendopod. Attheyella (Attheyella) tahoensissp. n. most closely resembles Attheyella (Attheyella) idahoensis (Marsh, 1903) from Idaho, Montana, and Alaska (United States) and Attheyella (Attheyella) namkungi Kim, Soh & Lee, 2005 from Gosu Cave in South Korea. They differ mainly by the number of setae on the distal endopodal segment of P2-P4. In addition, intraspecific variation has been observed on the caudal rami. Attheyella (Neomrazekiella) tessiaesp. n. is characterized by the extension of P5 baseoendopod, 2-segmented endopod of female P2-P3, and naked third seta of male P5 exopod. The two new species are likely endemic to Lake Tahoe, an isolated alpine lake within the Great Basin watershed in the western United States.

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