Parapseudoniphargus baetis, New Genus, New Species, a Stygobiont Amphipod Crustacean from the Guadalquivir River Basin (Southern Spain), with Phylogenetic Implications

1988 ◽  
Vol 8 (1) ◽  
pp. 110 ◽  
Author(s):  
Jos Notenboom
1988 ◽  
Vol 58 (1) ◽  
pp. 79-87
Author(s):  
Jos Notenboom

Metahadzia uncispina n. sp. is described, being the second species of the genus on the Iberian Peninsula. The new species, well characterized by the transformation of the apical spine on the endopodite of the male uropod 2, is undoubtedly closely related with M. tavaresi (Mateus & Mateus, 1972) from the south of Portugal. Comments are made about recent emendations of the original concept of the genus Metahadzia Stock, 1977.


Zootaxa ◽  
2011 ◽  
Vol 2811 (1) ◽  
pp. 1
Author(s):  
CHRISTER HANSSON

Dentalion gen. nov. (Hymenoptera: Eulophidae: Entedoninae), is described from the northern part of the Neotropical region, from Costa Rica to Ecuador and Brazil, and the Caribbean (Trinidad & Tobago). It comprises eleven new species: D. alveum, D. ambonatum, D. apertum, D. apon, D. crassicornis, D. jimenezi, D. mischum, D. noyesi, D. pinguicornis, D. pnigaliae, D. quadrifer. These species are diagnosed, described and illustrated, and a key for their identification is provided. Dentalion is characterized by two putative autapomorphies and two synapomorphies. The phylogenetic implications of these apomorphies are discussed briefly.


1989 ◽  
Vol 67 (4) ◽  
pp. 963-968 ◽  
Author(s):  
E. L. Bousfield ◽  
J. R. Holsinger

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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