Biology, ecology and voltinism of the Australian spongillafly Sisyra pedderensis Smithers (Neuroptera: Sisyridae)

The life stages of Sisyra pedderensis are described and statistical data from laboratory rearing experiments discussed. Novel sampling methods were used to obtain pupae from the field since adults were not attracted to black lights and the larval life cycle closed in the laboratory. The diel cycles of egg eclosion, full-fed larval emergence from aquatic habitats, and adult emergence are examined and illustrated. Morphological data are provided to identify the three larval instars. A comprehensive comparison of the biology of S. pedderensis and closely related overseas species is made. In Lake Pedder, this species of spongillafly was proved to be bivoltine, with overwintering larvae becoming imagines in early summer which was followed by a single summer generation

A new species of freshwater sponge (Porifera:Spongillidae) of the genus Radiospongilla from Lake Pedder in Tasmania

Lake Pedder is the home of a number of relictual organisms. One of those, a new species of freshwater sponge of the genus Radiospongilla, is described herein. Radiospongilla pedderensis sp. nov. occurs throughout most of the lake and often is found in very large numbers in many bays. Radiospongilla is widely distributed in tropical and sub-tropical regions of all continents. The pneumatic layer of the gemmule contains numerous abnormal gemmoscleres a condition probably caused by the chemistry of the lake. The morphology and dimensions of the megascleres, gemmoscleres and aberrant gemmoscleres, as well as the location, structure and size of gemmules, are provided for R. pedderensis. The sponge is a bright green colour due to intracellular zoochlorellae. Their presence in local members of Radiospongilla has been the subject of considerable speculation but herein they are illustrated for the first time in an Australian species

Trichomalopsis sisyrae Askew, sp. Nov. (Hymenoptera: pteromalldae), a parasitoid of Sisyra (Neuroptera: sisyridae) in Tasmania, Australia

A new species of hymenopteran parasitoid, Trichomalopsis sisyrae Askew (Hymenoptera: Pteromalidae) is described from Tasmania, Australia. Adults emerge solitarily from pupal cocoons of the endemic neuropteran Sisyra pedderensis Smithers. The first record of a pteromalid from Tasmania, the species is compared with other pteromalid parasitoids of Sisyridae (Neuroptera) and Gyrinidae (Coleoptera) with similar life history strategie

Biology, ecology and voltinism of the Australian spongillafly Sisyra pedderensis Smithers (Neuroptera: Sisyridae)

The life stages of Sisyra pedderensis are described and statistical data from laboratory rearing experiments discussed. Novel sampling methods were used to obtain pupae from the field since adults were not attracted to black lights and the larval life cycle closed in the laboratory. The diel cycles of egg eclosion, full-fed larval emergence from aquatic habitats, and adult emergence are examined and illustrated. Morphological data are provided to identify the three larval instars. A comprehensive comparison of the biology of S. pedderensis and closely related overseas species is made. In Lake Pedder, this species of spongillafly was proved to be bivoltine, with overwintering larvae becoming imagines in early summer which was followed by a single summer generation

The biology of seahorses Hippocampus abdominalis in culture

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