摘要:

DicranopteronSchmitz is removed from the Metopininae and three new species are described. All species are represented by females only and come fromOdontolermesandMacrotermesnests in the Orient. A key:to species) is provided. One species was observed ovipositing in the abdomens of the young stages ofO. takensis.

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1990.tb01211.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Variation in the size and the shape of neurocrania of a group of rock‐dwelling cichlid fishes (mbuna; from Lake Malawi, Africa was analysed using principal components and regression analyses on a set of 24 neurocranial measurements of 86 individuals from 11 species. The results reveal effective morphological discrimination between species. Most of the structural variation between species demonstrates positive allometry and represents size‐dependent species differences. Thus, morphological differentiation in these fish may be largely the result of heterochronic changes in relative growth rates. The vomerine region, however, exhibited shape differentiation. Distinct groupings, based on vomer shape, are identified. Foraging behaviour and diet are found to be correlated with this region of the neurocrania. The correlation of the shape of the vomer and fine‐scale resource partitioning suggests that this structure may be important in the evolutionary success of the group. Also, most structural shape variation in neurocranial morphology is associated with structural variation in buccal

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1990.tb01212.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Three species of blind Amphipoda are recorded from anchihaline cave waters in the Galapagos Islands. One of these,Galapsiellus leleuporum(Monod, 1970) was previously know from the islands; the male is described for the first time. The other two belong to families with predominantly (though not exclusively) deep‐sea members:Valettietta cavernicolasp. nov.(family Lysianassidae; andAntronicippe serratagen. et sp. nov.(family Pardaliscidae). The genusValettiettawas not previously recorded from caves; it contained two abyssal species in the Atlantic, while a third species was recorded from the Pacific in a vertical haul between 0 and 5300 m.Antronicippeis closely related toSpelaeonicippe, a genus with two species known from anchihaline caves in the Canary Islands and the West Indie

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1990.tb01213.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

The genusSigeMalmgren, 1865 is revised and the type speciesS.fusigeraMalmgren, 1865, redescribed from syntypes and newly collected topotype material. Based on examination of type specimens, six species described from other genera are transferred toSige: Pirakia brunneaFauchald, 1972;Vitiazia dogieliUshakov, 1953;Eulalia longocirrataStop‐Bowitz, 1948;Eumida (Eumidaj parvicirrusPerkins, 1984;Eulalia sandwichensisUshakov, 1975;Eulalia sigeformisAnnekova, 1937. The genusVitiaziaUshakov, 1953, being monotypic, becomes a junior synonym toSige. Pirakia lanceolataHartman&Fauchald, 1971 is synonymized withSige longocirrata(Støp‐Bowitz, 1948) andSige oliverisp. nov.is described from western Norway and Sweden. Ten species are recognized as belonging toSige. The relationships ofSigeto other genera are discu

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1990.tb01214.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

A new genus and species of monostiliferoidean enoplan nemertean from Alaska is described and illustrated. The nemertean,Alaxinus oclairigen. et sp. nov., was found on the egg mass of a red king crab,Paralithodes camtschatica.

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1990.tb01215.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Book reviewed in this article:Grasshoppers and Allied Insects of Great Britain and Ireland, by Judith A. Marshall&E. G. M. HayesBryozoan Evolution, by F. K. McKinney&J. B. C.JacksonLes vertébres fossiles de la formation Pisco (Pérou) Parts 1,2&3. by Christian de Muiz

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1990.tb01216.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY