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Taxonomy of two new species of gall midge (Diptera : Cecidomyiidae) infesting Tecticornia arbuscula (Salicornioideae : Chenopodiaceae) in Australian saltmarshes

journal contribution
posted on 2011-11-01, 00:00 authored by Anneke VeenstraAnneke Veenstra, Agnes MichalczykAgnes Michalczyk, P Kolesik
Two new species of gall midge associated with two leaf galls on the branched, perennial shrub Tecticornia arbuscula are described from saltmarshes in south-eastern Australia. The infestations caused by the new species hinder the growth of T. arbuscula which can impact on the critically endangered Orange Bellied Parrot (Neophema chrysogaster): T. arbuscula provides perching and roosting sites and the seeds are the major food source for this bird. Asphondylia tecticorniae sp. n. Veenstra & Kolesik transforms leaf segments into single-chambered, spherical galls, whereas Asphondylia peelei sp. n. Veenstra & Kolesik produces a multi-chambered, asymmetrical gall on leaves of the same plant. Both galls have fungal mycelium lining the inner surface of the larval chamber where it is presumably grazed on by the larva. Descriptions of the larvae, pupae, males, females and geographical distribution of the two gall midges in south-eastern Australia are given. Differences in the level of parasitoid infestation of four Asphondylia species feeding on Australian Chenopodiaceae in relation to putative oviposition sites on the host plants are explored.

History

Journal

Australian journal of entomology

Volume

50

Issue

4

Pagination

393 - 404

Publisher

Wiley-Blackwell Publishing Asia

Location

Richmond, Vic.

ISSN

1326-6756

eISSN

1440-6055

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2011, The Authors