Ligictaluridus posthon n. sp. (Monogenea: Ancyrocephalidae) from Noturus flavus Rafinesque (Siluriformes: Ictaluridae) in Ontario, Canada

1985 ◽  
Vol 63 (9) ◽  
pp. 2071-2073 ◽  
Author(s):  
G. J. Klassen ◽  
M. Beverley-Burton ◽  
A. O. Dechtiar

As a result of further studies following the review of the genus Ligictaluridus by G. J. Klassen and M. Beverley-Burton, we propose Ligictaluridus posthon n. sp. for ancyrocephalid monogeneans found on Noturus flavus (Siluriformes: Ictaluridae) taken in Ontario. Ligictaluridus posthon is most similar to the type species, L. pricei (Mueller, 1936) Beverley-Burton, 1984 but is distinguished by a stouter penis, with a diameter to length ratio of ~1:6 (~1:18 in L. pricei), larger hamuli, and an apparent specificity for stonecats (Noturus flavus).

1995 ◽  
Vol 69 (5) ◽  
pp. 922-932 ◽  
Author(s):  
Jessica L. Anderson ◽  
Rodney M. Feldmann

The genus Lobocarcinus Reuss, as it is currently understood, consists of five species. Three of these species are retained: L. paulinowurtembergensis, L. indicus, and L. aegypticus. Lobocarcinus catalaunicus is referred to Neptunus, and L.? santosi is referred to Cancer. A new species, L. lumacopius, is described. Lobocarcinus forms are distinct from all other cancrids in the lobation of their anterolateral margins, high width: length ratio, and dorsal carapace ornamentation. The type species of the genus, L. paulinowurtembergensis, is abundant in the Gebel Mokattam region near Cairo. The studied specimens of L. lumacopius are from Wadi Hitan (Zeuglodon Valley), a region approximately 140 km southwest of Gebel Mokattam in the Fayum Depression. Direct comparisons are made between L. lumacopius and L. paulinowurtembergensis, and sexually dimorphic characters of L. lumacopius, including width: length ratios and abdominal and sternal elements, are identified. A key is presented to aid in the identification of the various species within the genus and to help in distinguishing Lobocarcinus from Cancer.


2013 ◽  
Vol 47 ◽  
pp. 127-134
Author(s):  
O. V. Morozova ◽  
E. S. Popov

The paper describes two records of species of the genus Pseudobaeospora Singer emend. Bas. P. pillodii (Quel.) Wasser, collected in 2009 in the Teberda State Nature Reserve, was found before in Altai [reported as P. oligophylla (Singer) Singer, the type species of the genus], as well as in the Polar Urals. P. pyrifera is new to Russia. The descriptions are illustrated by line drawings and colour photographs.


2011 ◽  
Vol 20 (1) ◽  
pp. 161-173
Author(s):  
A.P. Kassatkina

Resuming published and own data, a revision of classification of Chaetognatha is presented. The family Sagittidae Claus & Grobben, 1905 is given a rank of subclass, Sagittiones, characterised, in particular, by the presence of two pairs of sac-like gelatinous structures or two pairs of fins. Besides the order Aphragmophora Tokioka, 1965, it contains the new order Biphragmosagittiformes ord. nov., which is a unique group of Chaetognatha with an unusual combination of morphological characters: the transverse muscles present in both the trunk and the tail sections of the body; the seminal vesicles simple, without internal complex compartments; the presence of two pairs of lateral fins. The only family assigned to the new order, Biphragmosagittidae fam. nov., contains two genera. Diagnoses of the two new genera, Biphragmosagitta gen. nov. (type species B. tarasovi sp. nov. and B. angusticephala sp. nov.) and Biphragmofastigata gen. nov. (type species B. fastigata sp. nov.), detailed descriptions and pictures of the three new species are presented.


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