New Zealand Flatworm (Arthurdendyus triangulatus) - Detail

General
Species Profile

Species Detail - New Zealand Flatworm (Arthurdendyus triangulatus) - Species information displayed is based on the dataset "National Invasive Species Database".

Terrestrial Map - 10km

Distribution of the number of records recorded within each 10km grid square (ITM).

Live Map

Marine Map - 50km

Distribution of the number of records recorded within each 50km grid square (WGS84).

Live Map

Species image

Scientific Name Arthurdendyus triangulatus

Common Name New Zealand Flatworm

Taxon Version Key NHMSYS0021008370 RecommendedWell-formed

Synonyms Arthurdendyus triangulata (Dendy, 1895), Artioposthia triangulata (Dendy, 1895), Artiposthia triangulata , Geoplana triangulata Dendy, 1895

Designations Invasive Species: EU Invasive Alien Species Regulation No. 1143/2014 || Invasive Species: High Risk Invasive Species (2013 Report)

Abbreviation artri

Authority (Dendy, 1895)

Group Flatworm (Turbellaria)

Rank Species

Number Of Records 46

Number Of 10Km Squares 35

Number Of 50Km Squares 29

Oldest Record 06/04/2024

Newest Record 13/11/2025

Phenology - earliest record (across all datasets) 1 January (recorded in 1984)

Phenology - latest record (across all datasets) 31 December (recorded in 1975)

Species Profiles

Citation Collated by the National Biodiversity Data Centre from different sources, National Invasive Species Database, National Biodiversity Data Centre, Ireland, New Zealand Flatworm (Arthurdendyus triangulatus), accessed 05 March 2026, https://maps.biodiversityireland.ie/Dataset/397/Species/280760

Species Detail - New Zealand Flatworm (Arthurdendyus triangulatus) - Species information displayed is based on the dataset "National Invasive Species Database".

Terrestrial Map - 10km

Marine Map - 50km

Species image

Records per month (across all datasets)

Records per year (across all datasets)