A new species of Lovenula Schmeil (Copepoda, Calanoida, Diaptomidae) from the Eastern Cape Province of South Africa

in Crustaceana
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Recent collections from the Eastern Cape Province of South Africa yielded an undescribed species of the freshwater diaptomid copepod genus Lovenula. It is probably the largest paradiaptomine known and closely resembles L. falcifera (Lovén, 1845). This species, L. raynerae n. sp., differs in several characters, including the shape of the female genital operculum, but particularly in details of the male and female leg 5: on the female the size of the endopod, a distinctive protuberance on the first exopodal segment; on male leg 5, the features of the seta adjacent to the claw of the right leg, a subdistal endopodal spine of the same ramus and details of the claw, with a middle gap on the inner margin. As with L. falcifera, the new species was collected from an ephemeral habitat. A record of L. falcifera from Ethiopia probably represents an undescribed species. A key to the species of the genus is provided.

A new species of Lovenula Schmeil (Copepoda, Calanoida, Diaptomidae) from the Eastern Cape Province of South Africa

in Crustaceana

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References

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Figures

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    Lovenula raynerae sp. nov., holotype female from the Grahamstown area, South Africa. A, habitus, dorsal view; B, antennular segments 1-13; C, same, segments 14-25; D, left wing of fifth pedigerous somite and genital double-somite, lateral view; E, right wing and genital double-somite, lateral view; F, wings and genital double-somite, dorsal view. Scale bars: A = 1 mm, B-F = 0.5 mm.

  • View in gallery

    Lovenula raynerae sp. nov., holotype female from the Grahamstown area, South Africa. A, antenna; B, mandible; C, maxillule; D, maxilla; E, maxilliped. Scale bars: A-E = 0.5 mm.

  • View in gallery

    Lovenula raynerae sp. nov., holotype female from the Grahamstown area, South Africa. A, first swimming leg; B, second swimming leg; C, third swimming leg, anterior view; D, fourth swimming leg, anterior view; E, fifth leg, anterior view; F, fifth leg, paratype specimen, anterior view; G, genital double-somite showing genital field, paratype specimen, ventral view. Scale bars: A-G = 0.5 mm. go = genital operculum.

  • View in gallery

    Lovenula raynerae sp. nov., allotype male from the Grahamstown area, South Africa. A, habitus, dorsal view; B, caudal rami, dorsal; C, wings of fifth pedigerous somite and first urosomite; D, right antennule segments 1-6; E, same, segments 7-21; F, rostral area; G, holotype female rostral area. Scale bars: A = 1 mm, B-E = 0.5 mm, F, G = 0.1 mm.

  • View in gallery

    Lovenula raynerae sp. nov., allotype male from the Grahamstown area, South Africa. A, fifth leg, anterior view, arrow shows spinulation gap of claw; B, same, paratype specimen, posterior view; C, detail of terminal segment of endopod of right fifth leg showing proximal spine-like process, posterior view. Scale bars: A, B = 0.5 mm, C = 0.05 mm.

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