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Zootaxa roundup

Home Forums Ichthyology Zootaxa roundup

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    Matt
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    Zootaxa 3882(2)

    Family-group names of Recent fishes – open access

    The family-group names of animals (superfamily, family, subfamily, supertribe, tribe and subtribe) are regulated by the
    International Code of Zoological Nomenclature. Family names are particularly important because they are among the most
    widely used of all technical animal names. Apart from using the correct family-group name according to the Code, it is also
    important to use one unique universal name (with a fixed spelling) to avoid confusion. We have compiled a list of familygroup
    names for Recent fishes, applied the rules of the Code and, if possible, tried to conserve the names in prevailing recent
    practice. We list all of the family-group names found to date for Recent fishes (N=2625), together with their author(s) and year
    of publication. This list can be used in assigning the correct family-group name to a genus or a group of genera. With this
    publication we contribute to the usage of correct, universal family-group names in the classification of, and for communication
    about, Recent fishes.

    Zootaxa 3884(3)

    The identity of Pethia punctata, a senior synonym of P. muvattupuzhaensis (Teleostei: Cyprinidae) – abstract

    Francis Day described Pethia punctata from Cochin, on the Malabar (south western) coast of India. Although, the species
    is now recovered from its synonymy with P. ticto, an accurate diagnosis and description have been lacking. A redescription
    of P. punctata based on external morphology, osteology and genetics is provided, which revealed that P. muvattupuzhaensis,
    described from Muvattupuzha River, Ernakulam District, Kerala, India, is its junior synonym. Pethia punctata can be
    diagnosed from other known species in the genus by a combination of characters including lateral line complete, with
    23–25 pored scales; 8 predorsal scales; ½4/1/3½ scales in transverse line; dorsal fin originating almost opposite to, or
    slightly before pelvic-fin origin; gill rakers 7 on first ceratobranchial; 4+26 total vertebrae; a small black humeral spot
    covering anterior half of the fourth scale of the row below the lateral-line row; two minute dark spots below the humeral
    spot; a prominent spot on the caudal peduncle, surrounded by a golden hoop covering scales 19–21 of the lateral-line row;
    and dorsal fin with 2–3 longitudinal rows of black spots, third row occupying only anterior portion of the fin.

    Zootaxa 3884(4)

    A new species of Limatulichthys Isbrücker & Nijssen (Loricariidae, Loricariinae) from the western Guiana Shield – abstract

    Limatulichthys nasarcus n. sp. is described as a new species based on 15 specimens from the Ventuari and Caura Rivers
    in Southern Venezuela. The new species can be distinguished from its only congener, L. griseus, by the presence of anterior
    abdominal plates half the size of those at center of abdomen (vs. plates similar in size); distinct spots less than half of
    diameter of naris across entire dorsum, including snout and head (vs. indistinct dorsal spots larger or equal than diameter
    of naris); lateral portions of head and opercle with dark well-defined spots larger than those on dorsum (vs. spots on lateral
    portions of head and opercle equal in size to those on remainder of body); snout profile in dorsal view broadly rounded
    (vs. acutely triangular); head longer (21.4–24.2 SL vs. 17.7–21.0%); and anal fin longer (15.7–18.0 SL vs. 13.7–15.6%).
    Distinctiveness of the two species is further supported by their non-overlapping distribution in multivariate morphospace.
    The disjunct distribution of L. nasarcus across both the Caura and Ventuari rivers exclusive of the main Orinoco River
    channel contributes to a growing body of evidence supporting the historical connection between headwaters of these drainages.
    The hypothesized existence of a ‘proto-Berbice’ paleodrainage provides one explanation for such a connection.

    Zootaxa 3884(5)

    Clarias serniosus, a new walking catfish (Teleostei: Clariidae) from Laos

    Clarias serniosus, a new Southeast Asian walking-catfish species, is described from the Bolavens Plateau in southern
    Laos. The new species is a member of the C. batrachus species complex, and can be distinguished from congeners in the
    complex in having a combination of: occipital process length 15–17 % HL, head length 28.2–28.6% SL, head width
    18.5–19.2% SL, head depth 13.0–13.7% SL, distance between the occipital process and the base of the first dorsal-fin ray
    8.5% SL, smooth anterior edge of pectoral spine, 67 dorsal-fin rays, body depth at anus 16.2–16.5% SL, and 57 total vertebrae.

    Zootaxa 3887(1)

    Two new species of the South Asian catfish genus Pseudolaguvia from northeastern India (Teleostei: Sisoridae)

    Two new species of sisorid catfish, Pseudolaguvia magna and P. jiyaensis, are described from the upper Brahmaputra River
    basin in Arunachal Pradesh, northeastern India. Pseudolaguvia magna differs from its congeners by its much larger size
    (47.0 mm standard length vs. a maximum of 35.6 mm), by having a broader rhomboid thoracic adhesive apparatus, two
    pale-brown or cream patches on the mid-dorsal region across the dorsal midline: one rectangular to elliptic patch on the
    mid-interdorsal region, and another indistinct elliptic to irregular patch between the adipose and caudal-fins; and a small,
    round, pale-brown to cream spot on the lateral side of the head; and except for P. inornata, P. austrina, P. virgulata, and
    P. assula, in lacking pale to cream cross-bands on the body. Another syntopic new species, Pseudolaguvia jiyaensis, is
    distinguished from its congeners by having the thoracic adhesive apparatus almost reaching the pelvic-fin origin, and by
    having fewer vertebrae (25–27 vs. 28–34; except in P. tenebricosa and P. tuberculata). Details of the combination of characters
    differentiating each of the new species from its congeners are provided in the respective diagnoses.

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