Four new species of Serranochromis (Teleostei: Cichlidae) from the Cuanza and Okavango river systems in Angola, including a preliminary key for the genus

Zootaxa ◽  
2021 ◽  
Vol 4908 (1) ◽  
pp. 66-84
Author(s):  
JAY R. JR. STAUFFER ◽  
ROGER BILLS ◽  
PAUL H. SKELTON
Keyword(s):  
New Species ◽  
Principal Components ◽  
Posterior Margin ◽  
Type Locality ◽  
Meristic Characters ◽  
Gill Rakers ◽  
Interorbital Width ◽  
Speciation Model ◽  
Okavango River ◽  
Meristic Data

The present study describes Serranochromis alvum n. sp., Serranochromis swartzi n. sp., Serranochromis cuanza n. sp., and Serranochromis cacuchi n. sp. from Angolan tributaries of the Cuanza and Okavango systems in Angola. The presence of four or five scale rows between the posterior margin of the orbit and the ascending arm of the preoperculum, the presence of widely set unicuspid teeth on the jaws, widely separated gill rakers, and anal fins with egg ocelli place these four species in Serranochromis. The Serranochromis described herein are distinguishable based on a combination of morphological and meristic characters, as well as pigmentation patterns. The interorbital width (14.3–15.9 % HL) of S. alvum is narrower than that of S. swartzi (17.6–19.8), S. cuanza (16.3–18.0), and S. cacuchi (20.0–21.7). Moreover, the interorbital width of S. cacuchi is greater than the other three described species. Serranochromis swartzi has a smaller preorbital depth (16.2–18.9 % HL) and snout length (29.6–31.9 % HL) than Serranochromis cuanza (PD 19.1–22.2, SNL 35.2–39.6 % HL). Serranochromis alvum is known only from the type locality at Cuito-Cuanavale at the junction of the Cuito and Cuanavale rivers, tributary to the Okavango River in Angola. Serranochromis swartzi is known only from the type locality in the Cuanza River, Angola. Serranochromis cuanza is restricted to the Cuanza River, below Capanda Dam, Angola, while S. cacuchi is known only from the Cacuchi River, a tributary of the Cuchi-Cubango River in Angola. The limited distribution of all four species and the absence of many congeners suggest, that in addition to previous studies that invoked a lacustrine speciation model, vicariance through drainage isolation seems to have played an important role in driving speciation in this group. The minimum polygon clusters that are formed when the first principal components of the meristic data are plotted against the second sheared principal components of the morphometric data show separation of the four new species. 

Stolephorus grandis, a new anchovy (Teleostei: Clupeiformes: Engraulidae) from New Guinea and Australia

Zootaxa ◽  
2021 ◽  
Vol 5004 (3) ◽  
pp. 481-489
Author(s):  
HARUTAKA HATA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
New Guinea ◽  
Gill Arch ◽  
The Other ◽  
Gill Rakers ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Pelvic Fin

The new anchovy Stolephorus grandis n. sp., described on the basis of 10 specimens collected from Papua, Indonesia, and Australia, closely resembles Stolephorus mercurius Hata, Lavoué & Motomura, 2021, Stolephorus multibranchus Wongratana, 1987, and Stolephorus rex Jordan & Seale, 1926, all having double pigmented lines on the dorsum from the occiput to the dorsal-fin origin, a long maxilla (posterior tip just reaching or slightly beyond the posterior margin of preopercle), and lacking a predorsal scute. However, the new species clearly differs from the others in having fewer gill rakers (35–39 total gill rakers on the first gill arch in S. grandis vs. > 38 in the other species), a greater number of vertebrae (total vertebrae 42–43 vs. fewer than 41), longer caudal peduncle (21.9–23.7% SL vs. < 20.8%), and the depressed pelvic fin not reaching posteriorly to vertical through the dorsal fin-origin (vs. reaching beyond level of dorsal-fin origin).

scholarly journals On Gymnodactylus amarali Barbour, 1925, with the description of a new species (Sauria, Gekkonidae)

2005 ◽  
Vol 77 (4) ◽  
pp. 595-611 ◽  
Author(s):  
Paulo Emilio Vanzolini
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Wide Distribution ◽  
Type Locality ◽  
Meristic Character ◽  
Speciation Model ◽  
Full Species ◽  
A New Species ◽  
Parnaíba Basin

Gymnodactylus amarali Barbour, 1925, was previously considered to be a subspecies of G. geckoides, with a wide distribution in the Brasilian cerrados. Examination of a specimen from Alto Parnaíba, Maranhão, near the type locality (Engenheiro Dodt, Piauí), indicates that it is a proper species, apparently limited to the upper Parnaíba basin. The form previously identified as G. geckoides amarali is described as a new species, G. carvalhoi, type locality Ipueiras, State of Tocantins, thus diagnosed: color pattern plain or, more often, with moderately contrasted ocelli; dorsal tubercles in 13 - 16 poorly organized longitudinal rows (mode 14, 72%); 31 - 49 tubercles in a paramedian row; 17 - 22 transverse rows of ventral scales; 13 - 18 infradigital lamellae on toe IV; tail longest in the genus. The new species is statistically compared to parapatric G. geckoides, widespread in the caatingas. Although only one meristic character (number of tubercle rows) is by itself diagnostic, the species are easily told apart. It is thought on provisional evidence that they are better considered for the time being as full species, not subspecies. A brief consideration is made of the speciation model that seems suitable, to wit, parapatric.

A new species of riffle minnow, Alburnoides holciki, from the Hari River basin in Afghanistan and Iran (Actinopterygii: Cyprinidae)

Zootaxa ◽  
2012 ◽  
Vol 3453 (1) ◽  
pp. 43 ◽  
Author(s):  
BRIAN W. COAD ◽  
NINA G. BOGUTSKAYA
Keyword(s):  
New Species ◽  
Related Species ◽  
Caspian Sea ◽  
Posterior Margin ◽  
Northern Slope ◽  
Dorsal Fin ◽  
Interorbital Width ◽  
Pharyngeal Teeth ◽  
Fin Rays ◽  
A New Species

A new species of riffle minnow, Alburnoides holciki (Cyprinidae), is described from northwestern Afghanistan andnortheastern Iran. It is distinguished from related species by a combination of characters including a well-defined, sharp,scaleless or only slightly scaled ventral keel; a short, slightly pointed snout; a terminal mouth with the tip of the mouthcleft, on a level with the upper half of the pupil; a large eye (orbit width about equal to interorbital width); (46)47–51(55)lateralline scales to posterior margin of hypurals; 2.5–4.2 pharyngeal teeth; usually 8½ branched dorsal-fin rays; usually13–16½ branched anal-fin rays; 40–42, usually 41, total vertebrae; caudal vertebral region longer than abdominal region(most frequent vertebral formulae 20+21, 20+22 and 19+21); and usually 13 or 14 predorsal vertebrae. A comparison withAlburnoides species from rivers of the South Caspian Sea, the northern slope of the Kopetdag Mountains and the Amu Darya basin is provided.

Polydactylus luparensis, a new species of threadfin (Perciformes: Polynemidae) from the Batang Lupar River, Sarawak, Borneo, Malaysia

Zootaxa ◽  
2010 ◽  
Vol 2405 (1) ◽  
pp. 63
Author(s):  
PEK KHIOK ANNIE LIM ◽  
HIROYUKI MOTOMURA ◽  
ALBERT CHUAN GAMBANG
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Lower Limb ◽  
Posterior Margin ◽  
Gill Rakers ◽  
Caudal Fin ◽  
Dorsal Fin ◽  
Basal Half ◽  
A New Species ◽  
Pelvic Fin

A new species of large-sized brackishwater threadfin, Polydactylus luparensis, is described from the Batang Lupar River in Sarawak, Malaysia, Borneo on the basis of 5 specimens (610–715 mm standard length). The new species can be distinguished from all other Polydactylus by having 8 dorsal-fin spines, first spine tiny, second spine very strong (its width more than 5 times the width of remaining spines); 13 second dorsal-fin soft rays; 11 anal-fin soft rays; 12 pectoralfin rays, its length 22–24% (mean 23%) of SL, posterior tip not reaching a vertical through posterior tip of depressed pelvic fin; 6 pectoral filaments, fourth or fifth filament longest, its length 77–85% (mean 81%) of SL, posterior tip extending slightly beyond caudal-fin base; pored lateral-lined scales 67–75 (mean 71); lateral line unbranched, extending onto upper end of lower caudal-fin lobe; 6 scale rows above lateral line, 8 below; 14 gill rakers on upper limb, 18 on lower limb, 32 in total; occipital profile concave; posterior margin of maxilla extending considerably beyond a vertical through posterior margin of adipose eyelid; depth of posterior margin of maxilla 4–5% (mean 5%) of SL, greater than orbit diameter; well-developed swimbladder present; basal half of third to sixth pectoral filament white, becoming black distally. Polydactylus luparensis is currently known only from the mouth of the Batang Lupar River.

Small range distributions in the high Andes: two new species of Liaghinella (Hemiptera: Heteroptera: Reduviidae: Emesinae) from Colombia

Zootaxa ◽  
2017 ◽  
Vol 4277 (3) ◽  
pp. 399 ◽  
Author(s):  
VALENTINA CASTRO-HUERTAS ◽  
DIMITRI FORERO
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Type Locality ◽  
Female Genitalia ◽  
Small Range ◽  
Male And Female ◽  
Eastern Cordillera ◽  
Species Diagnosis ◽  
Natural Park ◽  
Two New Species

Liaghinella Wygodzinsky, 1966 (Hemiptera: Heteroptera: Reduviidae: Emesinae: Metapterini), is an endemic Neotropical genus with two described species, one from Jamaica and one from Colombia. In this paper we describe two additional new species from the high Andes in Colombia, Liaghinella heldamariae sp. nov from Monserrate and Villa de Leyva, and L. tuberculata sp. nov. from Chicaque Natural Park, both in the Eastern Cordillera. The new species were collected very close to the type locality of the previously known Colombian species, L. andina Forero, 2007. These two new species differ from L. andina by having both a pair of conspicuous tubercles on the posterior margin of the pronotum, and by the structure of the male and female genitalia. Species diagnosis and descriptions, digital macrophotographies, and a key to separate the species of Liaghinella are presented. A discussion on the small range distributions exhibited by the high Andean species of Liaghinella is provided. 

scholarly journals A new species of Nicippe from the Bering Sea (Crustacea, Amphipoda, Pardaliscidae), with a redescription of N. tumida

ZooKeys ◽  
2020 ◽  
Vol 965 ◽  
pp. 37-53
Author(s):  
Ko Tomikawa ◽  
Keiichi Kakui ◽  
Yoshihiro Fujiwara
Keyword(s):  
New Species ◽  
Bering Sea ◽  
Posterior Margin ◽  
Type Locality ◽  
Mitochondrial Cytochrome ◽  
Key To Species ◽  
Distal Edge ◽  
Species Type ◽  
A New Species ◽  
The Bering Sea

A new pardaliscid amphipod, Nicippe beringensis, is described from the Bering Sea at depths between 520 and 536 m, and N. tumida Bruzelius, 1859 is redescribed based on specimens from Fredrikshald, Norway, near the species’ type locality. Nucleotide sequences of mitochondrial cytochrome c oxidase subunit I (COI) from the holotype and a paratype of N. beringensissp. nov. are reported. While N. beringensissp. nov. is similar to N. tumida, it differs from the latter in having an asetose palp article 1 of maxilla 1, a gnathopod 1 coxa with a straight distal edge, and in the posterior margin of the basis of gnathopods 1 and 2, and pereopod 3, being heavily setose in females. A key to species of Nicippe is provided.

scholarly journals Bothrocara nyx: a new species of eelpout (Perciformes: Zoarcidae) from the Bering Sea

Zootaxa ◽  
2005 ◽  
Vol 1094 (1) ◽  
pp. 53 ◽  
Author(s):  
DUANE E. STEVENSON ◽  
M. ERIC ANDERSON
Keyword(s):  
New Species ◽  
Bering Sea ◽  
Maximum Size ◽  
Meristic Characters ◽  
Gill Rakers ◽  
Pectoral Fins ◽  
Eastern Bering Sea ◽  
Gill Chamber ◽  
A New Species ◽  
The Bering Sea

A new species of eelpout, Bothrocara nyx, is described from the eastern Bering Sea slope on the basis of 142 specimens collected during bottom trawl surveys conducted from 2000 through 2004.  This species has a small maximum size, a short snout, a relatively low number of small vomerine and palatine teeth, a high number of gill rakers, and a heavily pigmented mouth and gill chamber.  It is similar to B. pusillum, but differs in the number of gill rakers, and in the morphology of gill rakers and pectoral fins.  It can be distinguished from all other congeners on the basis of morphometric and meristic characters.

scholarly journals A NEW SPECIES OF FISH OF THEÜENUS Stellifer (PERCIFORMES: SCIAENIDAE) FROM THE SOUTH CARIBBEAN SEA

2016 ◽  
Vol 13 ◽  
Author(s):  
Orangel Aguilera ◽  
Oscar David Solano ◽  
Julio Valdez
Keyword(s):  
New Species ◽  
Anterior Chamber ◽  
Gill Filament ◽  
Caribbean Sea ◽  
Gill Arch ◽  
Similar Species ◽  
Swim Bladder ◽  
Gill Rakers ◽  
Interorbital Width ◽  
A New Species

The genus Stellifer is charaterized by its lack of mental barbels, interorbital width 3.5 or less in head, swim bladder with two chambers, the anterior with a pair of diverticula located posterolateralÿ, cavernous head, gill rakers long and slender; otoliths sagittae and lapillus enlarged. A new species of Stellifer is described. This species is characterized by the presence of a pair of small bulb-like diverticula in the anterior chamber of the swim bladder, dark first gill arch, with 42-49 gill rakers, the longest of them larger in length than the gill filament located at angle of arch, and four mental pores. Differs from other species of the genus by the number of gill rakers. The more similar species is S. rastrifer of which differs in that it has different number of preopercular spines and mental pores.

Description of a new codling species of Physiculus from Taiwan (Gadiformes: Moridae)

Zootaxa ◽  
2021 ◽  
Vol 5052 (1) ◽  
pp. 105-116
Author(s):  
CHI-NGAI TANG
Keyword(s):  
New Species ◽  
Dna Barcoding ◽  
Upper Limb ◽  
Posterior Margin ◽  
Gill Arch ◽  
Head Length ◽  
Light Organ ◽  
Gill Rakers ◽  
A New Species

A new species of codling Physiculus megastomus sp. nov. is described based on the holotype and a subadult paratype collected from northern and eastern Taiwan. The new species is classified in Physiculus by the presence of a ventral light organ on the abdomen and a chin barbel, and the absence of vomerine teeth. It is distinguished from congeners in having a large mouth with the posterior end of the maxilla extending well behind the level of the posterior margin of the orbit, its length 57.8‒60.7% in head length (HL) and the combination of the following characters: both jaws bearing caniniform teeth; snout, suborbital area, and gular region fully scaled; ventral light organ small, its length 5.5‒6.7% of distance from the interventral line to the origin of the anal fin (InV-af), located approximately at the mid-point of InV-af; five gill rakers on the upper limb of the first gill arch. DNA barcoding supported the establishment of the new species.  

scholarly journals Deilagaon, a New Genus of Indo-Malayan and Papuan Fig Wasps (Hymenoptera, Chalcidoidea, Agaonidae)

1977 ◽  
Vol 46 (2) ◽  
pp. 291-298 ◽  
Author(s):  
J.T. Wiebes
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
New Guinea ◽  
The Philippines ◽  
Type Locality ◽  
Fig Wasps ◽  
Bismarck Archipelago

Introduction of the new genus Deilagaon with descriptions of new species chrysolepidis (type-species) from the Philippines (type-locality Luzon, ex Ficus chrysolepis Miq.), Celebes, New Guinea (ex F. novoguineensis Corner), Bismarck Archipelago, Solomon Isis.; and annulatae from Thailand, Malaya (ex F.depressa Bl.), Sumatra, Borneo (type-locality N. Borneo, ex F. annulata Bl.), Philippines. Included is also Ceratosolen megarhopalus Grandi (1923) from Thailand, Malaya, Sumatra, Java, Borneo, Philippines (Balabac Isl.).

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