摘要:

The presence of embryos in the mantle cavity ofCatomerus polymerus, Chamaesipho tasmanicaandChthamalus antennatuswas monitored over a two year period.C. polymerusandC. tasmanicashow a clearly defined breeding season spanning late autumn, winter and early spring.C. antennatusbreeds more continuously throughout the year, with a decline in breeding during the winter. The larval stages ofC. polymerus, C. tasmanicaandC. antennatusare described from larvae reared in the laboratory. Morphological differences allow each larval stage of the three species to be distinguished without difficulty. Unique larval features permit identification to superfamily, family and genus. The similarities of chthamaloid nauplii to those of lepadomorphs and verrucomorphs and their differences from the nauplii of other balanomorphs are discussed. Larval evidence supports the view that the chthamaloids are related more closely than other balanomorphs to the lepadomorphs, and that the coronuloids and balanoids share a comon derivation from the chthamaloids.

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1989.tb02221.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

The external larval morphology of predacious Syrphidae is examined and compared with that of other groups of syrphids. Predacious larvae form a distinctive, monophyletic group. Relationships among 29 of the 34 European genera and subgenera are analysed using cladistic methods based on larval and puparial characters. Interpretation of the cladogram suggests that, within Syrphinae, a system of five tribes can be recognized and that a major trend has been a shift from ground layer to arboreal larval habitats, with an increasing degree of obligate dependence on soft‐bodied Homoptera as prey. Generic diagnoses with biological and taxonomic notes are given and a key to genera based on larvae and puparia is provide

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1989.tb02222.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Keys are provided to families of Hyadesioidea, to genera of Hyadesiidae, and to all species of this family known from the New Zealand subregion. A new species ofAmhyadesia, two new species ofHyadesia sensu stricto, and four new species of a newly defined subgenus ofHyadesia (Parahyadesia)are described.

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1989.tb02223.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1989.tb02224.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1989.tb02221a.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY