AnimaliaNot EvaluatedacceptedspeciesAccepted
Haemopis grandis

Haemopis grandis

(Verrill, 1874) Verrill, 1874

GBIF:119380930

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Descriptions(2)

General distribution: Eastern North America (Figure 3 D, Table 2).
Madill, Jacqueline, Hovingh, Peter (2007): Freshwater leech (Annelida: Hirudinida) distribution in the Canadian Province of Newfoundland and Labrador and adjacent regions: check-list, new records, new pigmentation forms, and Pleistocene refugia. Zootaxa 1657: 1-21, DOI: 10.5281/zenodo.179881
Newfoundland: Museum specimens: USNM 38612: Fox Island (1927, station 15, accession number 259718, collector Ruby Bere). (See note about Fox Island in Previous Records section.) Notes on the species. This species is identified by the characteristic pharyngeal musculature associated with the lack of teeth and jaws (Richardson 1969). A specimen was dissected to examine the internal organs. Haemopis grandis is previously unreported in Newfoundland and Labrador.
Madill, Jacqueline, Hovingh, Peter (2007): Freshwater leech (Annelida: Hirudinida) distribution in the Canadian Province of Newfoundland and Labrador and adjacent regions: check-list, new records, new pigmentation forms, and Pleistocene refugia. Zootaxa 1657: 1-21, DOI: 10.5281/zenodo.179881

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FIGURE 3. Distribution of rare leeches. Circles, 2004 survey; squares, literature locations (Pawlowski 1948, Davies 1973); triangles, museum specimens. A, Alboglossiphonia heteroclita (Linnaeus); B, Theromyzon sp.; C, Haemopis marmorata (Say): circles and squares; Haemopis lateromaculata Mathers: triangles; D, Haemopis grandis (Verrill) and Erpobdella parva (Moore): both museum specimens found at the same site (Fox Island- see text).

Imageimage/png© Madill, Jacqueline;Hovingh, PeterMadill, Jacqueline;Hovingh, Peter

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Source Information

Freshwater leech (Annelida: Hirudinida) distribution in the Canadian Province of Newfoundland and Labrador and adjacent regions: check-list, new records, new pigmentation forms, and Pleistocene refugia

checklist

This dataset contains the digitized treatments in Plazi based on the original journal article Madill, Jacqueline, Hovingh, Peter (2007): Freshwater leech (Annelida: Hirudinida) distribution in the Canadian Province of Newfoundland and Labrador and adjacent regions: check-list, new records, new pigmentation forms, and Pleistocene refugia. Zootaxa 1657: 1-21, DOI: 10.5281/zenodo.179881

Abstract

The freshwater leeches (Hirudinida) in the Province of Newfoundland and Labrador were investigated by examining the literature, the Canadian Museum of Nature and the United States National Museum of Natural History records, and a leech survey. New pigmentation forms are described for Erpobdella punctata (Leidy) and Erpobdella obscura (Verrill). This is the first published record for Haemopis lateromaculata Mathers in Canada. Four species (Glossiphonia elegans (Verrill), Helobdella modesta (Verrill), Erpobdella punctata, and Erpobdella obscura) were found in both Labrador and Newfoundland with Erpobdella obscura common in Labrador and the other three species common in Newfoundland. Seven other species of leeches were less abundant in Newfoundland with 6 of these species very restricted in distribution. The abundance of leech species in Newfoundland and the paucity of leech species in Labrador suggested that the island species were present in a Pleistocene refugium associated with Newfoundland or the Grand Banks. Post-Pleistocene barriers to leech mobility are examined, and possible timing of colonization events is proposed in this model.

Key words: Annelida, Leeches, Hirudinida, Glossiphoniidae, Haemopidae, Hirudinidae, Erpobdellidae, Newfoundland, Labrador, pigmentation patterns, Pleistocene refugia, new record

Madill J, Hovingh P, plazi (2007). Freshwater leech (Annelida: Hirudinida) distribution in the Canadian Province of Newfoundland and Labrador and adjacent regions: check-list, new records, new pigmentation forms, and Pleistocene refugia. Plazi.org taxonomic treatments database. Checklist dataset https://doi.org/10.5281/zenodo.179881 accessed via GBIF.org on 2026-06-16.

CC0Published 12/31/2007View dataset
GBIF Usage Key
119380930
Dataset Key
4450f512-2b32-4d43-8291-95a78b92b0b4
Origin
source
Backbone Key
2308819
Taxon ID
03C78785FF95CA4D3598FE09FBAC8201.taxon
Last Crawled
6/11/2026
Last Interpreted
6/11/2026