New Zealand Journal of Zoology abstracts
The larva of Hydrobiosis torrentis Ward (Trichoptera:
Hydrobiosidae)
BRIAN J. SMITH
National Institute of Water and Atmospheric
Research Ltd
P.O. Box 11-115
Hamilton, New Zealand
Abstract The
Hydrobiosis charadraea Group
(Trichoptera: Hydrobiosidae) contains three described species of caddisflies;
Hydrobiosis torrentis Ward,
H. charadraea McFarlane and
H.
harpidiosa McFarlane. However, the larvae of only the latter two have been
described. The larva of
H. torrentis is distinguished from other species
in the
H. charadraea Group by the absence of darker pigmentation on the
head capsule and anterior margin of the prosternal sclerite, and by the
presence of an elongated femoral process on the chelate forelimb. The larvae of
H. torrentis are restricted to cold waters in alpine regions of the
South Island, New Zealand. This paper describes and figures the last instar
larva of
H. torrentis, includes a distribution map for this species, and
provides a key to the last instar larvae of the
H. charadraea Group.
Keywords Trichoptera; Hydrobiosidae; Hydrobiosis
charadraea Group; Hydrobiosis torrentis; New Zealand;
biosystematics; taxonomy
Z98025
Received 30 June 1998; accepted 16 August 1999
PDF file of entire paper: medium quality (368K); (scanned from paper original: notes about this process)
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