The stygobitic genus Ceuthonectes at present includes 12, for the most part phreatic and endemic species; only Ceuthonectes serbicus Chappuis, 1924 is widespread in different groundwater habitats of Slovenia, Macedonia, Romania and Serbia.

The species Ceuthonectes colchidanus, described by Borutzky (1930) as Morariodes colchidana from Georgia, was firstly synonymized by the same author with Ceuthonectes serbicus (Borutzky, 1952, 1972). Later on, Rouch (1980), Petkovski (1984), Cottarelli & Saporito (1985) and Karanovic (1999), considered the two species as distinct taxa; recently Apostolov (2000) pointed out that " les caractères morphologiques des exemplaires de Caucase dècrits sous le nom de Morariodes colchidana recouverent complètement ceux de Ceuthonectes serbicus Chappuis".

Ceuthonectes haemusi Apostolov, 2000 [Bulgaria; cave waters] Ceuthonectes hungaricus Ponyi, 1958 [Hungary; ground waters] Ceuthonectes latifurcatus (Borutzky, 1931) Ceuthonectes mirabilis Miura, 1964 [Japan; ground waters] Ceuthonectes pescei Cottarelli & Saporito, 1985 [Sardinia, Italy; phreatic waters] Ceuthonectes petkovskii Karanovic, 1999 [Montenegro; cave waters] (LEFT) Ceuthonectes rouchi Brancelj, 1991 [Yugoslavia, Slovenia; cave and spring ? waters] Ceuthonectes serbicus Chappuis, 1924 [Europe; ground waters] Ceuthonectes vievilleae Rouch, 1908 [France; ground waters] | KEY TO SPECIES OF CEUTHONECTES |

FIBULOCAMPTUS Hamond, 1987

Fibulocamptus bisetosus Hamond, 1987 [Australia; ponds] Fibulocamptus gracilior Hamond, 1987 [Australia; dead or living plants] Fibulocamptus tasmanicus Hamond, 1987 [Tasmania; leaf-litters] (left) Fibulocamptus victorianus Hamond, 1987 [Australia; leaf-litters, mosses]

GULCAMPTUS Miura, 1969

The genus Gulcamptus was proposed by Miura (1969) to accomodate G. uenoi discovered in cave waters of Korea; to date it include six species, one stygobiont, the others limited to marginal habitats, like streams and glaciated areas.

The taxonomic status of the genus and the invalidation of the genus Neomaraenobiotus Flossner, 1992, as junior synonym of Gulcamptus, is treated in Reid & Ishida. (1996).

LESSINOCAMPTUS Stoch, 1997

The genus Lessinocamptus was established by Stoch (1997) to accomodate the species Canthocamptus insoletus from the cave "Buso della Rana" (north Italy) [formerly erroneously ascribed to the genera Moraria (Dussart, 1969; Pesce, 1985) or Morariopsis (Cottarelli, 1996) ] and two new species also from caves of north Italy (Lessinian Mountains).

The species Spelaeocamptus reductus Sterba, 1967 and Spelaeocamptus asiaticus Sterba, 1967 must be included in the genus Nitokra and Nitocrella respectively (Dussart & Defaye, 1990)

STYGEPACTOPHANES Moeschler & Rouch, 1984