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Invertebrate Systematics Invertebrate Systematics Society
Systematics, phylogeny and biogeography
Table of Contents
Invertebrate Systematics

Invertebrate Systematics

Volume 28 Number 1 2014

IS13015Systematics and biology of the aberrant intertidal parasitoid wasp Echthrodesis lamorali Masner (Hymenoptera : Platygastridae s.l.): a parasitoid of spider eggs

Simon van Noort, Lubomir Masner, Ovidiu Popovici, Alejandro A. Valerio, Charuwat Taekul, Norman F. Johnson, Nicholas P. Murphy and Andrew D. Austin
pp. 1-16

Rediscovery of the South African endemic wasp Echthrodesis lamorali, an egg parasitoid of intertidal spiders, has enabled an assessment of the species’ evolutionary relationships. Molecular sequence data determined that this species is related to other southern hemisphere wasps using silk encased eggs as hosts. Unravelling the biology and evolutionary relationships of this tiny wasp allows for an appreciation of the evolutionary history of an ecologically important group of insects.


The freshwater crabs of the Seychelles Archipelago are morphologically and phylogenetically unique and have long been viewed as a single species. Here we use DNA analysis, haplotyping and gonopod characters to recognise two new species in the endemic genus Seychellum. Speciation within the Archipelago took place following the original trans-oceanic colonisation event by ancestral populations from the African mainland.

IS13010Investigating the Bivalve Tree of Life – an exemplar-based approach combining molecular and novel morphological characters

Rüdiger Bieler, Paula M. Mikkelsen, Timothy M. Collins, Emily A. Glover, Vanessa L. González, Daniel L. Graf, Elizabeth M. Harper, John Healy, Gisele Y. Kawauchi, Prashant P. Sharma, Sid Staubach, Ellen E. Strong, John D. Taylor, Ilya Tëmkin, John D. Zardus, Stephanie Clark, Alejandra Guzmán, Erin McIntyre, Paul Sharp and Gonzalo Giribet
pp. 32-115

Bivalves constitute a major lineage of aquatic invertebrates and are of great commercial importance worldwide; however, their evolutionary history and interrelationships of major branches remain contested. Analysing a large morphological data matrix combined with up to nine molecular loci, this project offers a robust test of bivalve relationships. A revised phylogeny is provided, organising living Bivalvia into six major branches.

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