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1. A new genus of isophlebioid damsel-dragonflies with "calopterygid"-like wing shape from the Middle Jurassic of China (Odonata: Isophlebioidea: Campterophlebiidae)

Creator:
nel, André, Huang, Di-Ying, and Lin, Qi-Bin
Type:
article, model:article, and TEXT
Subject:
Odonata, Isophlebioidea, Campterophlebiidae, gen. n., sp. n., Middle Jurassic, China, and wing shape
Language:
English
Description:
Zygokaratawia reni, a new campterophlebiid genus and species is described from the Middle Jurassic of China. This fossil has a wing shape unique for this clade, i.e. a fore- and hind wing of the same width and very shortly petiolated, and hind wing cubito-anal area nearly as narrow as that of the forewing. This wing shape is convergently similar to that of recent Zygoptera: Calopterygidae, as well as to several other Cenozoic zygopteran clades, suggesting similar styles of flight and habits, i.e. predation on small insects and flight along trees of river banks.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2. The association between wing morphology and dispersal is sex-specific in the glanville fritillary butterfly Melitaea cinxia (Lepidoptera: Nymphalidae)

Creator:
Breuker, Casper J., Brakefield, Paul M., and Gibbs, Melanie
Type:
article, model:article, and TEXT
Subject:
Lepidoptera, Nymphalidae, glanville fritillary, Melitaea cinxia, dispersal, wing shape, body morphology, individual quality, fluctuating asymmetry, wing aspect ratio, wing loading, and sexual dimorphism
Language:
English
Description:
We examined whether dispersal was associated with body and wing morphology and individual quality, and whether such an association was sex-specific, in the Glanville fritillary butterfly Melitaea cinxia (L.) in Paldiski on the north coast of Estonia. Body weight, size and shape of both fore- and hindwing, wing aspect ratio and wing loading were used as measures of body and wing morphology. Fluctuating asymmetry (FA) of wing shape was used as a measure of individual quality. Males and females did not differ in dispersal rates, despite large differences in overall morphology and FA. Females had a significantly higher wing loading and aspect ratio, but a lower FA than males. Females, but not males, that dispersed differed in forewing shape from those that did not disperse. The sex-specifity of the covariation between dispersal and forewing shape is most probably due to wing shape being associated with different life-history traits in both sexes, resulting in different selection pressures on wing shape in each of the sexes.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public