Genus Didymogaster Fletcher, 1886

Museums

Regional Maps

• Didymogaster Fletcher, J.J. 1886. Notes on Australian Earthworms—Part I. Proceedings of the Linnean Society of New South Wales 1(2): 523-574 [554].

  Type species:

   Didymogaster sylvaticus Fletcher, 1886 by original designation.

 

Distribution

States

New South Wales

IBRA and IMCRA regions

drainage basins and coastal and oceanic zones

IBRA

NSW: Australian Alps (AA), Brigalow Belt South (BBS), Broken Hill Complex (BHC), Channel Country (CHC), Cobar Peneplain (CP), Darling Riverine Plains (DRP), Murray Darling Depression (MDD), Mulga Lands (ML), Nandewar (NAN), New England Tablelands (NET), NSW North Coast (NNC), NSW South Western Slopes (NSS), Riverina (RIV), Sydney Basin (SB), South East Corner (SEC), South Eastern Highlands (SEH), South Eastern Queensland (SEQ), Simpson Strzelecki Dunefields (SSD)

Original AFD Distribution Data

Australian Region

• Australia
  • New South Wales: SE coastal

Diagnosis

Setae lumbricin, widely paired. A pair of combined male and prostatic pores in XVIII on the posterior end of the clitellum. Prostates racemose, sessile on the body wall. Spermathecal pores 3 or 4 pairs, segmentally located. Two gizzards present, in VI and VII. Calciferous glands and typhlosole absent. Nephridia exonephric, avesiculate meronephridia throughout, the median nephridium in posterior segments stomate and in the last segments enlarged as a megameronephridium, the other nephridia all astomate micromeronephridia. Median suboesophageal testis-sacs present in X and XI.

 

Diagnosis References

Jamieson, B.G.M. 2000. Native Earthworms of Australia (Megascolecidae, Megascolecinae). Enfield, New Hampshire, USA : Science Publishers, Inc. [CD ROM] 2506 pp. [Date published 12 December 2000] [306]

 

General References

Jamieson, B.G.M. 1963. A revision of the earthworm genus Digaster (Megascolecidae, Oligochaeta). Records of the Australian Museum 26: 83-111 [90]

Jamieson, B.G.M. 2000. Native Earthworms of Australia (Megascolecidae, Megascolecinae). Enfield, New Hampshire, USA : Science Publishers, Inc. [CD ROM] 2506 pp. [Date published 12 December 2000] [306]

Jamieson, B.G.M. & Bradbury, E.A. 1972. investigation of the Australian earthworm genus Didymogaster (Megascolecidae: Oligochaeta) and discrimination of populations by analysis of setal ratios. Pedobiologia 12: 111-122 [111-112]

Michaelsen, W. 1900. Das Tierreich, Vermes, Lief. 10, Oligochaeta. Berlin : Friedländer und Sohn. [199]

 

History of changes

Published	As part of group	Action Date	Action Type	Compiler(s)
		15-Jul-2010	MODIFIED