WoRMS source details

Christensen, Bent; Dózsa-Farkas, Klara. (1999). The enchytraeid fauna of the Palaearctic tundra (Oligochaeta, Enchytraeidae). Biologiske Skrifter. 52: 1-37.
288754
Christensen, Bent; Dózsa-Farkas, Klara
1999
The enchytraeid fauna of the Palaearctic tundra (Oligochaeta, Enchytraeidae)
Biologiske Skrifter
52: 1-37
Publication
Available for editors  PDF available [request]
We have examined samples collected by the trans-siberian Swedish-Russian Ecology Expedition 1994, and critically evaluated the relevant literature and existing museum collections from previous expeditions to Siberia. Eleven species are described as new to science and the total number of enchytraeid species recorded from the Palearctic tundra is now 56. This indicates a species richness comparable to that of terrestrial habitats in ecologically more heterogeneous temperate regions. In the genera Mesenchytraeus, Henlea, Bryodrilus and Cognettia species diversity in the tundra is even higher than in temperate regions, which is contrary to the generally accepted poleward decline in diversity. The genera Fridericia and Achaeta follow the normal pattern with only few species in the Arctic. It is concluded that the Palearctic tundra in general and the Amphi- Beringian region in particular harbour a rich endemic fauna with a strong dominance of Mesenchytraeus and Henlea species.
Europe
Systematics, Taxonomy
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2018-01-19 08:08:31Z
created
2019-05-02 21:59:56Z
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2019-05-08 09:43:48Z
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Achaeta macrocyta Christensen & Dózsa-Farkas, 1999 (original description)
Bryodrilus arctica (Bell, 1962) accepted as Bryodrilus arcticus (Bell, 1962) (additional source)
Bryodrilus borealis Cejka, 1912 (additional source)
Bryodrilus diverticulatus Černosvitov, 1929 (additional source)
Cernosvitoviella pusilla Nurminen, 1973 (additional source)
Cognettia bisetosa Christensen & Dózsa-Farkas, 1999 (original description)
Cognettia glandulosa (Michaelsen, 1888) (additional source)
Cognettia lapponica Nurminen, 1965 (additional source)
Cognettia piperi Christensen & Dózsa-Farkas, 1999 accepted as Euenchytraeus piperi (Christensen & Dózsa-Farkas, 1999) (original description)
Cognettia quadrosetosa Christensen & Dózsa-Farkas, 1999 (original description)
Fridericia callosa (Eisen, 1878) (additional source)
Henlea adiverticulata Christensen & Dózsa-Farkas, 1999 (original description)
Henlea conchifera Christensen & Dózsa-Farkas, 1999 (original description)
Henlea dicksoniana Schmelz & Collado, 2012 accepted as Henlea tolli Michaelsen, 1901 (source of synonymy)
Henlea diverticulata Cejka, 1912 (additional source)
Henlea glandulifera Nurminen, 1970 (additional source)
Henlea ochracea (Eisen, 1878) (additional source)
Henlea parva Cejka, 1912 accepted as Henlea tolli Michaelsen, 1901 (source of synonymy)
Henlea perpusilla Friend, 1911 (additional source)
Henlea tolli Michaelsen, 1901 (additional source)
Marionina aporus (Stephenson, 1925) accepted as Marionina apora (Stephenson, 1925) (basis of record)
Marionina macrobulbi Christensen & Dózsa-Farkas, 1999 (original description)
Marionina nordica Christensen & Dózsa-Farkas, 1999 (original description)
Mesenchytraeus arcticus Bell, 1962 (additional source)
Mesenchytraeus asiaticus Eisen, 1904 (additional source)
Mesenchytraeus chaunus Piper, Maclean & Christensen, 1982 (additional source)
Mesenchytraeus falciformis Eisen, 1878 (additional source)
Mesenchytraeus flavus (Levinsen, 1884) (additional source)
Mesenchytraeus melanocephalus Christensen & Dózsa-Farkas, 1999 (original description)
Mesenchytraeus mirabilis Eisen, 1878 (additional source)
Mesenchytraeus sveni Christensen & Dózsa-Farkas, 1999 (original description)
Mesenchytraeus torbeni Christensen & Dózsa-Farkas, 1999 (original description)
 Comparison

The species name refers to the presence of four setae in some setal bundles [details]

 Etymology

The species name refers to the large lymfocytes [details]

 Etymology

The species name refers to the presence of only two setae in most bundles [details]

 Etymology

Named in honour of Stephen R. Piper. [details]

 Etymology

The species name refers to the absence of intestinal diverticulae [details]

 Etymology

The species name refers to the cockle-shaped intestinal diverticulae [details]

 Etymology

The species name refers to the large penial bulbs [details]

 Etymology

Only known from some of the northernmost.stations. [details]

 Etymology

The species name refers to numerous pigment cells in the anterior end of the body. [details]

 Etymology

Named in honour of Sven Jonasson [details]

 Etymology

Named in the honour of Torben Christensen. [details]

 Homonymy

Nurminem's original Punahenlea name as recombined in Henlea (due to synonymy of the genera) becomes a secondary ... [details]