AnimaliaacceptedgenusAccepted
Orobdella

Orobdella

Oka, 1895

GBIF:119406062

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Descriptions(2)

Remarks. The genus Orobdella differs from the type genus, Gastrostomobdella, in the following characteristics: post-anal annulus absent (present in Gastrostomobdella); Gastropore at XIII (XV); Gastroporal duct lies on female organ (behind female organ); ovisacs globular (elongated).
Nakano, Takafumi (2011): Redescription of Orobdella ijimai (Hirudinida: Arhynchobdellida: Gastrostomobdellidae), and two new species of Orobdella from the Ryukyu Archipelago, Japan. Zootaxa 2998: 1-15, DOI: 10.5281/zenodo.207870
Type species. Orobdella whitmani Oka, 1895.
Nakano, Takafumi (2011): Redescription of Orobdella ijimai (Hirudinida: Arhynchobdellida: Gastrostomobdellidae), and two new species of Orobdella from the Ryukyu Archipelago, Japan. Zootaxa 2998: 1-15, DOI: 10.5281/zenodo.207870

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Redescription of Orobdella ijimai (Hirudinida: Arhynchobdellida: Gastrostomobdellidae), and two new species of Orobdella from the Ryukyu Archipelago, Japan

checklist

This dataset contains the digitized treatments in Plazi based on the original journal article Nakano, Takafumi (2011): Redescription of Orobdella ijimai (Hirudinida: Arhynchobdellida: Gastrostomobdellidae), and two new species of Orobdella from the Ryukyu Archipelago, Japan. Zootaxa 2998: 1-15, DOI: 10.5281/zenodo.207870

Abstract

Sexannulate Orobdella leech, Orobdella ijimai, is redescribed based on newly collected specimens from the type locality, Nikko, Tochigi Pref., Japan, since this species was originally described based on limited number of characters. In addition, two new sexannulate species, Orobdella dolichopharynx sp. nov. from Amamioshima Island in the Ryukyu Archipelago, Japan, and Orobdella shimadae sp. nov. from Okinawajima Island also in the Ryukyu Archipelago, are described. They resemble O. ijimai in the annulation of mid-body somites, but they differ from the latter in the annulation of somite VIII, position of gonopores, the lack of gastropore, the length of pharynx, the shape of gastroporal duct, and the morphology of male genital organ. Two new Orobdella species differ from each other in the annulation of somite VII, the position of gonopores, and the shape of gastroporal duct. In accordance with the two new species, the diagnosis of Orobdella is slightly emended.

Key words: Hirudinida, Gastrostomobdellidae, Orobdella ijimai, new species, gastroporous, Japan

Nakano T, plazi (2011). Redescription of Orobdella ijimai (Hirudinida: Arhynchobdellida: Gastrostomobdellidae), and two new species of Orobdella from the Ryukyu Archipelago, Japan. Plazi.org taxonomic treatments database. Checklist dataset https://doi.org/10.5281/zenodo.207870 accessed via GBIF.org on 2026-06-14.

CC0Published 12/31/2011View dataset
GBIF Usage Key
119406062
Dataset Key
0e6dd8ec-40b2-4ad9-a56c-b7368a352266
Origin
source
Backbone Key
4810476
Taxon ID
03ED87EDFFB4FFB2FF3AFEAD21D51860.taxon
Last Crawled
6/11/2026
Last Interpreted
6/11/2026