Helobdella modesta ( Verrill 1872 )

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, pp. 1-21 : 6-7

Helobdella modesta ( Verrill 1872)

Common name: Scutate snail leech

General distribution: Holarctic ( Figures 2 B, 4B, Tables 1, 2 ).

Newfoundland: Survey: Site 1 (CMNA 2006–0001), Site 10 (CMNA 2006–0004), Site 12 (CMNA 2006–0006), Site 14 (CMNA 2006–0007), Site 15 (CMNA 2006–0009), Site 16 (CMNA 2006–0010), Site 17 (CMNA 2006–0011), Site 19 (CMNA 2006–0014). Museum specimens: CMNA 1981–0620, CMNA 1987– 0 485, CMNA 1987–0486, CMNA 1987–0487, CMNA 1987–0494, CMNA 1987–0500; Literature: Pawlowski (1948) as Helobdella stagnalis at St George’s (two stations), Deer Lake, Grand Falls; Gates and Moore (1970) as H. stagnalis at Lily Pond; Pickavance (1971) as Helobdella sp. at Rennies River, St. John’s; Davies (1973) as H. stagnalis at Rocky Harbour and at Bonne Bay, Big Pond, and Gull Lake [There is a Big Bonne Bay Pond NNE of Deer Lake (490 30' N, 57 0 55' W), Gull Lake (490 39' N, 560 57' W), and Big Pond just NE of Colinet and S of Ocean Pond (470 31' N, 530 28' W).

Labrador: Survey: Site 24 (CMNA 2006–0015).

St-Pierre and Miquelon: Literature: Pawlowski (1948) as Helobdella sp.: St-Pierre.

Figures

FIGURE 2. Photographs of selected Newfoundland and Labrador leeches. D was collected by Cecelia McGrath in 1982. A, Dorsal view of Glossiphonia elegans (Verrill), site 17; B, Dorsal view of Helobdella modesta (Verrill), site 12; C, Dorsal view of Theromyzon sp., site 6; D, Lateral view of Haemopis lateromaculata Mathers, showing the plain ventrum separated from the speckled dorsum by a lighter pattern on the side, CMNA 1982 – 0654; E, Dorsal view of Haemopis marmorata (Say), site 12; F, Closeup of anal protrusion of Haemopis marmorata, Site 12; G, Erpobdella punctata (Leidy) (normal pigmentation), site 7; H, Erpobdella obscura (Verrill) [normal pigmentation], site 21. Scale bars are in cm unless otherwise indicated.