T.E.R:R.A.I.N - Taranaki Educational Resource: Research, Analysis and Information Network


Caddisfly (Net-spinning) Genus: Polyplectropus

Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Hexapoda
Class: Insecta
Subclass: Pterygota (caddisflies)
Order: Trichoptera
Suborder: Annulipalpia
Superfamily: Hydropsychoidea
Family: Polycentropodidae
Subfamily: Polycentropodinae
Genus: Polyplectropus
Binominal name: Polyplectropus altera
Common name: Net-spinning caddisfly, Caseless caddisfly 

Caddisflies in the genus Polyplectropus are called tube makers. Polyplectropus caddis larvae have no mobile case, no chelae (pincers) and they have a distinctly speckled head pattern. The head pattern does not include a curved line of spots. 
The larvae are common throughout New Zealand in slow-flowing gravely streams or soft bottom streams with woody debris,
They construct delicate, silk, filter-feeding nets to trap drifting particulate food items, including other invertebrates and plant fragments.

This Polyplectropus altera caddisfly had a body length of 11 mm.


 

Polyplectropus caddis larvae

Thanks to Wikipedia for text and information: https://creativecommons.org/licenses/by-sa/3.0/