A new crangonyctid amphipod crustacean from hypogean fresh waters of Oregon
Stygonyx courtneyi n.gen., n.sp. (Amphipoda: Crangonyctidae) is described from hypogean waters of northwestern Oregon. This new species appears most closely allied taxonomically with one subgroup of the advanced hypogean genus Stygobromus. However, the unique form of uropod 3 and the relatively unmodified (plesiomorphic) form of the coxal and pleon plates and oostegites justify its recognition as the type of a new genus that is intermediate between Stygobromus and the primitive, mainly epigean, genus Crangonyx.
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1891 ◽
Vol 8
(45)
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pp. 241-247
1977 ◽
Vol 46
(2)
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pp. 291-298
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1945 ◽
Vol 38
(2)
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pp. 199-206