Hexabothriidae

Belongs within: Polyopisthocotylea.

The Hexabothriidae are a group of monogenean flukes mostly parasitic on cartilaginous fishes (Dawes 1956).

Characters (Dawes 1956): Prohaptor a more or less well-developed oral sucker or two ventro-lateral bothria. Opisthaptor with cotylophore circular or rectangular, bearing six suckers, each with a large crescentic hook, and an appendix provided with a pair of terminal suckers and one to three pairs of hooks. Intestine bifurcate, generally with lateral and median diverticula, caeca uniting posteriorly and extending into opisthaptor. Eyes generally absent, occasionally present. Common genital pore ventral and median. Cirrus generally unarmed. Testes numerous. Ovary relatively large, tubular and folded, situated in front of testes. Vaginae present.

<==Hexabothriidae [Onchocotylidae]D56
    |--Diclybothrium Leuckart 1835 [=Diclibothrium, Diklibothrium, Diplobothrium Leuckart 1842; Diclybothriinae]D56
    |    |--*D. armatum Leuckart 1835 (see below for synonymy)D56
    |    `--D. hamulatum (Simer 1929)D56
    |--RajonchocotylinaeD56
    |    |--Rajonchocotyloides Price 1940D56
    |    |    `--*R. emarginata (Olsson 1876) [=Onchocotyle emarginata]D56
    |    `--Rajonchocotyle Cerfontaine 1899D56
    |         |--*R. batis Cerfontaine 1899D56
    |         |--R. alba Cerfontaine 1899D56
    |         |--R. miraletus Rees & Llewellyn 1941D56
    |         `--R. prenanti (St Remy 1890) [=Onchocotyle prenanti]D56
    `--Hexabothriinae [Onchocotylinae]D56
         |--Heteronchocotyle Brooks 1934D56
         |    |--H. hypoprioni Brooks 1934D56
         |    `--H. tsalickisiB88
         |--Hexabothrium Nordmann 1840 [incl. Acanthonchocotyle Cerfontaine 1899, Onchocotyle Diesing 1850]D56
         |    |--*H. appendiculatum (Kuhn 1829) (see below for synonymy)D56
         |    |--H. canicula (Cerfontaine 1899) [=Acanthonchocotyle canicula]D56
         |    `--H. musteli (MacCallum 1931)D56
         |--Neoerpocotyle Price 1942D56
         |    |--*N. maccallumi Price 1942D56
         |    |--N. catenulata (Guberlet 1933) [=Squalonchocotyle catenulata]D56
         |    |--N. grisea (Cerfontaine 1899) [=Squalonchocotyle grisea]D56
         |    `--N. licha (Rees & Llewellyn 1941) [=Squalonchocotyle licha]D56
         `--Erpocotyle Beneden & Hesse 1863 [incl. Erpetocotyle Fuhrmann 1928, Squalonchocotyle Cerfontaine 1899]D56
              |--*E. laevis Beneden & Hesse 1863 [incl. Squalonchocotyle vulgaris Cerfontaine 1899]D56
              |--E. abbreviata (Olsson 1876) [=Onchocotyle abbreviata, Squalonchocotyle abbreviata]D56
              |--E. antarctica (Hughes 1928)D56
              |--E. borealis (Beneden 1853) [=Onchocotyle borealis, Squalonchocotyle borealis]D56
              |--E. canis (Cerfontaine 1899) [=Squalonchocotyle canis]D56
              |--E. dollfusi Price 1942D56
              |--E. eugalei Price 1942D56
              |--E. galeorhini Price 1942D56
              `--E. torpedinis Price 1942D56

*Diclybothrium armatum Leuckart 1835 [=Diclibothrium armatum, Diplobothrium armatum, Polystoma (Hexacotyle) armatum; incl. Erpocotyle circularis Linstow 1904, Diclibothrium circularis, Diklibothrium crassicaudatum Leuckart in Kollar 1836, Hexacotyle elegans Nordmann 1840]^D56

*Hexabothrium appendiculatum (Kuhn 1829) [=Polystoma appendiculatum, Acanthonchocotyle appendiculata, Onchocotyle appendiculatum]^D56

*Type species of generic name indicated

References

[B88] Brooks, D. R. 1988. Scaling effects in historical biogeography: a new view of space, time, and form. Systematic Zoology 37 (3): 237–244.

[D56] Dawes, B. 1956. The Trematoda with special reference to British and other European forms 2^nd ed. University Press: Cambridge.