Monsoonal tropical Tanytarsus van der Wulp (Diptera: Chironomidae) reviewed: New species, life histories and significance as aquatic environmental indicators

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Abstract:

Abstract

The immature stages of the cosmopolitan chironomid midge genus Tanytarsus van der Wulp can dominate tropical running waters. Studies in the Alligator Rivers Region of the Northern Territory, Australia have revealed a plethora of species, some of which show differential responses to disturbance, including mine drainage. These taxa in their immature stages have been referred to previously by codes. Here Tanytarsus gulungul, Tanytarsus hardwicki, Tanytarsus micksmithi, Tanytarsus dostinei, Tanytarsus rosario, Tanytarsus humphreyi and Tanytarsus reidi are described as new from larvae, pupae and adult males, Tanytarsus wendylee as new based on pupae and adult males, and Tanytarsus bispinosus Freeman and Tanytarsus richardsi Glover redescribed in all stages. Five species-level taxa for which the adults are unknown are described but not formally named, although the identity of one with Tanytarsus manlyensis Glover and another with Tanytarsus dycei Glover is suggested. A diagnostic matrix is provided for larvae and dichotomous keys for pupae and adult males. Some distributional and environmental responses are described and comments provided on species groupings, including a review of the genus Virgatanytarsus Pinder.

Keywords: Australian tropics; Chironomidae; Tanytarsus.; bioindication

Document Type: Research Article

DOI: http://dx.doi.org/10.1046/j.1440-6055.2000.00170.x

Affiliations: CSIRO Entomology, GPO Box 1700, Canberra, ACT 2601, Australia.

Publication date: July 1, 2000

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