In:
Zoosystematics and Evolution, Pensoft Publishers, Vol. 98, No. 2 ( 2022-09-08), p. 327-343
Abstract:
A new diagnosis and a new classification of Heptapterus are provided and a new species, H. carmelitanorum , is described. Heptapterus is diagnosed by the following character combination: adipose fin confluent with the caudal fin; non-bifurcate caudal fin; anal-fin insertion posterior to vertical through adipose-fin insertion; 10–23 anal-fin rays; anal fin not confluent with caudal fin; and extremely elongate body, with a head length of 16.1–24.9%SL. Species included in Heptapterus are H. borodini , H. carmelitanorum , H. carnatus , H. exilis , H. hollandi , H. mandimbusu , H. mbya , H. mustelinus , H. ornaticeps , and H. qenqo . Some of the character states diagnosing H. carmelitanorum among its congeners are the anal-fin insertion less than one eye diameter posterior to a vertical through the adipose-fin insertion (vs. more than one eye diameter in all congeners); the isognathous mouth (vs. slightly to moderately retrognathous, except H. borodini ); and the keel formed by ventral procurrent caudal-fin rays shallow, far from reaching anal-fin base (vs. keel formed by ventral procurrent caudal-fin rays deep, continuing almost to the anal-fin base, except in H. borodini and H. hollandi ).
Type of Medium:
Online Resource
ISSN:
1860-0743
,
1435-1935
DOI:
10.3897/zse.98.89413
DOI:
10.3897/zse.98.89413.figure1
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10.3897/zse.98.89413.figure10
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10.3897/zse.98.89413.figure7
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10.3897/zse.98.89413.figure8
DOI:
10.3897/zse.98.89413.figure9
DOI:
10.3897/zse.98.89413.suppl1
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2022
detail.hit.zdb_id:
2420116-9
detail.hit.zdb_id:
1430702-9
SSG:
12
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