Geogenia Kinberg, 1867

Nxele, Thembeka C., 2015, A new species of Geogenia Kinberg, 1867 from the south coast of KwaZulu-Natal, South Africa (Oligochaeta, Microchaetidae), African Invertebrates 56 (3), pp. 549-554 : 550

publication ID	https://doi.org/ 10.5733/afin.056.0303
publication LSID	lsid:zoobank.org:pub:299AF1DE-B892-40FE-B36A-26BC0D0CC6A2
DOI	https://doi.org/10.5281/zenodo.7649982
persistent identifier	https://treatment.plazi.org/id/5A59F867-FF32-FFFB-FE6C-D56BFE35910E
treatment provided by	Felipe
scientific name	Geogenia Kinberg, 1867
status

Treatment

Genus Geogenia Kinberg, 1867 View in CoL View at ENA

Geogenia Kinberg, 1867: 97 View in CoL ; Perrier 1886: 876; Reynolds & Cook 1976: 52; 1993: 22; Pickford 1975: 23; Brinkhurst & Jamieson 1971: 739.

Microchaeta [partim]: Rosa 1891: 382; 1898: 1; Beddard 1895: 675.

Geogenia View in CoL ( Microchaeta ?): Michaelsen 1899: 428.

Geogenia View in CoL ( Microchaetus View in CoL ?): Michaelsen 1891: 38; 1899: 428; 1900: 462.

Microchaetus: Michaelsen 1899:428 View in CoL [redescription of natalensis View in CoL ]; [partim]: 1900: 448; 1908:40; 1913 a: 545; 1913 b: 61; 1913 c: 422; 1918: 331; Brinkhurst & Jamieson 1971: 739; Pickford 1975: 23 [partim]; Reynolds & Cook 1993: 6; Hodgson & Jamieson 1992: 112 [for pentheri ]; Plisko 1995: 283; [partim]: 1991: 279; 1992: 338; 1993: 222; 1998: 250; 2002:205; 2003: 281; 2005: 105; 2006: 34. Type species: Geogenia natalensis Kinberg, 1867 View in CoL

Diagnosis: Holandric, testes and male funnels in 10, 11. Excretory system holoic, with V-shaped nephridial bladders. Gizzard single in segment 7. Dorsal blood vessel double in 4–9, being partly or fully separated when crossing segments, but simple after 10; in segment 8 broadly parted, in 9 enlarged, constituting a ‘cordiform’ organ. Calciferous glands not stalked, paired or encircling oesophagus, although always with dorsal or ventral vestigial grooves; in one or two segments. Spermathecae and spermathecal pores in pre-testicular, testicular or post-testicular segments. If only pre-testicular or post-testicular, then pores occur in fewer than four furrows. If in more than four furrows, pores occur anterior to testes segments, in testis and post-testicular intersegmental furrows. Two pairs of seminal vesicles; rarely only one anterior pair. Two, three or four anterior septa (4/5–8/9) variably thickened. Body length of most species 40–300 mm, some extending to 400 mm, and one species reaching 800 mm. Number of segments approximately 100–500.

Kingdom	Animalia
Phylum	Annelida
Class	Clitellata
Order	Crassiclitellata
Family	Microchaetidae