scholarly journals Revision of Bowmaniella sensu Băcescu, 1968 (Crustacea: Mysida: Mysidae: Gastrosaccinae): a taxonomic conundrum

Zootaxa ◽  
2006 ◽  
Vol 1269 (1) ◽  
pp. 1 ◽  
Author(s):  
RICHARD W. HEARD ◽  
W. WAYNE PRICE
Keyword(s):  
Type Species ◽  
Type Material ◽  
Nominal Species ◽  
New Genera ◽  
The Third ◽  
Terminal Form ◽  
Taxonomic Confusion ◽  
To Receive

There is confusion regarding the taxonomy, systematics, and distribution of species within the burrowing mysid genus Bowmaniella Băcescu, 1968. We have critically reviewed and examined the subgenera and the 15 nominal species currently assigned to Bowmaniella sensu Băcescu. Type material of eight of the 15 nominal species was examined and in vivo observations were made on two nominal species of the ‘dissimilis group’. It was determined that in the ultimate (terminal form) and penultimate (subterminal form) males, the morphology of the third pleopods is distinctly different, a factor which has led to taxonomic confusion and the descriptions of several invalid species. Because Băcescu (1968) did not designate a type species for Bowmaniella or for the subgenus Coifmanniella, both taxa are nomina nuda. Our studies, especially those involving the development of the male third pleopod, also indicate that nine of the nominal species previously assigned to Bowmaniella Bacescu, 1968 are junior synonyms. We formally designate two new genera, Bowmaniella n. g. and Coifmanniella n. g., to accommodate the species previously listed under Bowmaniella and its subgenera as perceived by Băcescu (1968). We retain the use of Bacescu’s original generic and subgeneric names, but with each having distinctly different diagnoses to those originally proposed by Băcescu. Bowmaniella n. g. is diagnosed to receive B. dissimilis (type species) and B. banneri. Coifmanniella n. g. contains four species, C. johnsoni (type species), C. mexicana, C. merjonesi, and C. parageia. Lectotypes are designated for Bowmaniella dissimilis, B. banneri, Coifmanniella mexicana and C. merjonesi and a neotype is designated for C. johnsoni. Illustrated keys are given for the seven “burrowing” genera presently assigned to the Gastrosaccinae and for the species currently assigned to the American genera Bowmaniella and Coifmanniella.

A systematic revision of the genus Archocentrus (Perciformes: Cichlidae), with the description of two new genera and six new species

Zootaxa ◽  
2007 ◽  
Vol 1603 (1) ◽  
pp. 1-78 ◽  
Author(s):  
JUAN J. SCHMITTER-SOTO
Keyword(s):  
New Species ◽  
Type Species ◽  
Phylogenetic Analyses ◽  
Nominal Species ◽  
New Genera ◽  
Systematic Revision ◽  
Widespread Species ◽  
Species Complexes ◽  
As Species ◽  
To Receive

The cichlid genus Archocentrus has been considered one of the most promising (i.e., possibly natural) genera resurrected to receive some of the species formerly included in Cichlasoma. Evidence is presented to justify generic recognition of Archocentrus, as well as eight other closely related genera (Caquetaia, Hypsophrys, Parachromis, Amphilophus, Archocentrus, Cryptoheros, Amatitlania, and Rocio). Of these, Amatitlania (type species, A. nigrofasciata) and Rocio (type species, R. octofasciata) are described as new. The present revision treats all nominal species ever assigned to Archocentrus, as well as species that have been included in or near the same clade as Archocentrus centrarchus (type species of the genus) in available phylogenetic analyses. Geographical variation in morphology of the more widespread species was examined, which has resulted in the description of six new species (Cryptoheros chetumalensis, Amatitlania coatepeque, A. kanna, A. siquia, Rocio gemmata, and R. ocotal) with a seventh resurrected from synonymy (Cryptoheros cutteri). Archocentrus includes the type species (Ar. centrarchus), plus Ar. spinosissimus and Ar. multispinosus. Cryptoheros is restricted to the species complexes of Cr. spilurus (= subgenus Cryptoheros, including also Cr. chetumalensis and Cr. cutteri) and Cr. septemfasciatus (= Bussingius n. subgen., including also Cryptoheros altoflavus, Cr. nanoluteus, Cr. myrnae, and Cr. sajica); Cryptoheros panamensis is placed in Panamius n. subgen. Herotilapia is synonymized with Archocentrus, and Neetroplus is synonymized with Hypsophrys, which now includes the type species H. nicaraguensis and H. nematopus. Lectotypes are designated for Amatitlania nigrofasciata, Archocentrus spinosissimus, Cryptoheros septemfasciatus, Cr. spilurus, and Rocio octofasciata. Cichlasoma immaculatum is considered to be a synonym of Archocentrus spilurus, not of Ar. spinosissimus.

Revision of the genus Rhoptromeris Förster, 1869 with reference to north-western European species

1978 ◽  
Vol 9 (1) ◽  
pp. 47-62 ◽  
Author(s):  
Göran Nordlander
Keyword(s):  
New Species ◽  
Type Species ◽  
Type Material ◽  
Nominal Species ◽  
European Species ◽  
Western European ◽  
North Western ◽  
A New Species

AbstractThe type material of most European nominal species previously placed in Rhoptromeris and of some other species is studied. Notes are given on the type material, 10 lectotypes are designated and the identity of the species is discussed. Three valid Rhoptromeris species are found: R. heptoma (Hartig) [type species], R. villosa (Hartig) and R. rufiventris (Giraud) n.comb. The latter is the type species of Hexamerocera Kieffer which is synonymized with Rhoptromeris. The genus Rhoptromeris is described and compared with related genera. The three species found to be valid are figured and redescribed, and also a new species, R. nigriventris, is described from Sweden. R. heptoma is an important parasitoid of Oscinella frit (L.) (Dipt.: Chloropidae).

Two new genera of Nearctic Chamaemyiidae (Diptera: Lauxanioidea) associated with Cinara aphids (Hemiptera: Aphididae) on Pinus

Zootaxa ◽  
2020 ◽  
Vol 4852 (1) ◽  
pp. 61-82
Author(s):  
STEPHEN D. GAIMARI
Keyword(s):  
United States ◽  
North America ◽  
Pinus Ponderosa ◽  
Type Species ◽  
Immature Stages ◽  
New Genera ◽  
Western North America ◽  
Southwestern United States ◽  
The Third

Two new genera of Chamaemyiidae (Diptera: Lauxanioidea) are described and illustrated, including: Chamaethrix gen. nov. (type species Chamaethrix necopina sp. nov.), possibly a predator of Cinara ponderosae (Williams) on Pinus ponderosa in the southwestern United States; and Vitaleucopis gen. nov. (type species Vitaleucopis nidolkah sp. nov.; other included species Vitaleucopis astonea (McAlpine), comb. nov., and Vitaleucopis scopulus sp. nov.), predators of Cinara aphids and possibly adelgids on Pinaceae in western North America. Immature stages are discussed or described and illustrated for some taxa, including the eggs of Chamaethrix necopina and Vitaleucopis nidolkah; and the third instars and puparia of Vitaleucopis nidolkah. 

scholarly journals Evolution of the hectocotylus in Sepiolinae (Cephalopoda: Sepiolidae) and description of four new genera

2020 ◽  
Author(s):  
Giambattista BELLO
Keyword(s):  
Complex Structure ◽  
Copulatory Organ ◽  
Morphological Characters ◽  
Distal Portion ◽  
Nominal Species ◽  
New Genera ◽  
Simple Modification ◽  
The Third ◽  
Copulatory Apparatus ◽  
Light Organs

The subfamily Sepiolinae (Mollusca: Cephalopoda: Sepiolidae), currently containing the genera Sepiola Leach, 1817, Euprymna Steenstrup, 1887, Inioteuthis Verrill, 1881, Rondeletiola Naef, 1921 and Sepietta Naef, 1912, is characterized by the hectocotylization of the left dorsal arm, i.e., its transformation into a copulatory organ thanks to modifications of sucker/pedicel elements. The hectocotylus morphology varies to a great extent across genera and species. In particular, one to several pedicels in its proximal third lose their sucker and become highly and diversely modified in shape to constitute a copulatory apparatus. An evolutionary gradient was observed in the copulatory apparatus morphology, from the simple modification into a papilla of just one pedicel from the third element of the ventral sucker row (some nominal species of Euprymna) to a quite complex structure involving several variously modified pedicels from both the ventral and dorsal sucker rows (Inioteuthis). In some species, elements in the distal portion of the hectocotylus may also be highly modified, such as the columnar suckers in Euprymna. The hectocotylian diversity allows to distinguish nine groups of species that do not match the current generic subdivision of Sepiolinae. Additional morphological characters (number of sucker rows on arms, female bursa copulatrix, occurrence and shape of visceral light organs, etc.) corroborate the subdivision of Sepiolinae into nine subtaxa, i.e., genera. Accordingly, a cladogram is drawn to describe the possible phylogenetic relationships among the nine clades. To comply with these results, all current genera are redefined and four new genera are described, namely Adinaefiola gen. nov., Boletzkyola gen. nov., Eumandya gen. nov. and Lusepiola gen. nov.

scholarly journals Systematics of the spider subfamily Hexathelinae (Dipluridae : Mygalomorphae : Arachnida)

1978 ◽  
Vol 26 (4) ◽  
pp. 841
Author(s):  
RJ Raven
Keyword(s):  
New Species ◽  
New Zealand ◽  
South America ◽  
Type Species ◽  
Sister Group ◽  
New Genera ◽  
Australian Species ◽  
To Receive

Two new genera, Plesiothele and Bymainiella, are erected to receive all the Australian species of the subfamily Hexathelinae, which now comprises four genera, including Hexathele with 20 species from New Zealand, and Scotinoecus with two species from South America. Plesiothele is a monotypic Tasmanian genus, type-species Hexathele fentoni Hickman, 1936. Bymainiella comprises 12 new species: B. boycei, B. boydi, B. brindabella, B. cannoni, B. grayi, B. lugubris, B. monteithi, B. montisbossi, B. otwayensis, B. polesoni, B. tubrabucca and B. variabilis; also B. montana (Hickman, 1927), and B. terraereginae (Raven, 1976), the latter being the type-species. The typespecies of Scotinoecus, S. cinereopilosus, is redescribed, and keys to the genera of the subfamily Hexathelinae, and to the Bymainiella species, are given. Two new indices are introduced to overcome the problem of bilateral variability. Bymainiella is believed to be the sister group of Scotinoecus.

A taxonomic revision of the genus Zyzzyzus Stechow, 1921 (Cnidaria: Hydrozoa: Tubulariidae)

Zootaxa ◽  
2007 ◽  
Vol 1627 (1) ◽  
pp. 1-22 ◽  
Author(s):  
CARLOS J.A. CAMPOS ◽  
ANTONIO C. MARQUES ◽  
ALVARO E. MIGOTTO
Keyword(s):  
Type Species ◽  
Taxonomic Revision ◽  
External Morphology ◽  
Western Pacific ◽  
Type Material ◽  
Valid Species ◽  
Nominal Species ◽  
Type Specimens ◽  
Additional Material ◽  
Northwest Atlantic

The hydrozoan genus Zyzzyzus is revised based on reexaminations of all available type specimens and on additional material. The taxon includes four valid species: Zyzzyzus spongicolus (von Lendenfeld, 1884), from the eastern Indian and southwest Pacific oceans; the type species, Z. warreni Calder, 1988, from the Atlantic, western Indian, and western Pacific oceans; and Z. floridanus Petersen, 1990 and Z. robustus Petersen, 1990, both from the northwest Atlantic. Although type specimens of Z. calderi Petersen, 1990 could not be located, it has been assigned here to the synonymy of Z. warreni because of similarities between the two in nematocyst dimensions, in number and structure of endodermal canals, and in external morphology of the hydrocaulus and hydrorhiza. A sixth nominal species (Corymorpha iyoensis Yamada, 1958) has on one occasion been assigned to the genus, but detailed studies of the type material are needed to resolve its taxonomic affinities.

On the recent Cyclocypridinae (Podocopida, Candonidae) with description of two new genera and one new species

Zootaxa ◽  
2011 ◽  
Vol 2820 (1) ◽  
pp. 1 ◽  
Author(s):  
IVANA KARANOVIC
Keyword(s):  
New Species ◽  
Type Species ◽  
Terminal Segment ◽  
Extensive Study ◽  
South American ◽  
New Genera ◽  
South American Species ◽  
The Third ◽  
South Wales ◽  
One New Species

The recent representatives of the subfamily Cyclocypridinae Kaufmann, 1900 are revised here, based on some newly collected Australian material, as well as an extensive study of type material of already described species deposited in various museums. The following two new genera are proposed: Kempfcyclocypris gen. nov. and Keysercypria gen. nov. The genus Kempfcyclocypris is erected to include single new species from subterranean waters of New South Wales, Australia. Kempfcyclocypris australis gen. et sp. nov. can be distinguished from other members of the subfamily by the following characters: 6-segmented antennula, absence of the sexual bristles on antenna, weakly asymmetrical prehensile palps, absence of the basal seta on the second thoracopod, and the long distal seta on the penultimate segment of the third thoracopod. Keysercypria is erected to include some South American species previously described in the genera Physocypria Vávra, 1897 or Cypria Zenker, 1854. The main characters of this genus are: rather globular carapace, with or without marginal tubercles; very short setae on endopodal segments of the third thoracopod; unequally long setae “h1” and “h2” on the terminal segment of the same appendage; and the presence of the basal seta on the second thoracopod. Keysercypria affinis (Klie, 1933) comb. nov. is chosen as the type species and, together with K. deformis (Klie, 1940) comb. nov., K. longiseta (Klie, 1930) comb. nov., K. obtusa (Klie, 1940) comb. nov., and K. pellucida (Sars, 1901), redescribed in the present paper and lectotype and paralectotype are designated. After examining and redescribing the type species of the genus Physocypria Vávra, 1897, P. bullata Vávra, 1897, the genus Mecynocypria Rome, 1962 is synonymised with Physocypria. Lectotype of P. bullata is here designated. For each valid genus a diagnosis, a key to species and a distribution map are provided. A list of six genera and 87 species, currently belonging to the subfamily Cyclocypridinae, is given at the end of the paper, along with their synonyms. Twenty four species are not included in the keys due to lack of data; these are also listed at the end of the paper.

Genus-level revision of the family Phalacridae (Coleoptera: Cucujoidea)

Zootaxa ◽  
2013 ◽  
Vol 3605 (1) ◽  
pp. 1-147 ◽  
Author(s):  
MATTHEW L. GIMMEL
Keyword(s):  
New Species ◽  
Type Species ◽  
Morphological Characters ◽  
Species Group ◽  
Nominal Species ◽  
New Genera ◽  
Genus Level ◽  
The Family ◽  
Tribal Classification ◽  
Phylogenetic Revision

A pre-phylogenetic revision of the family Phalacridae at the genus level is presented. Twenty-eight new generic synonymies are established as follows: Acylomus Sharp 1888 (=Liophalacrus Sharp 1888, syn. nov.; Ganyrus Guillebeau 1894, syn. nov.; Podocesus Guillebeau 1894, syn. nov.; Tinodemus Guillebeau 1894, syn. nov.; Ledorus Guillebeau 1895, syn. nov.; Astenulus Guillebeau 1896, syn. nov.; Afronyrus Švec 2006, syn. nov.), Apallodes Reitter 1873 (=Litolibrus Sharp 1889, syn. nov.; Sphaeropsis Guillebeau 1893, syn. nov.; Gyromorphus Guillebeau 1894, syn. nov.), Augasmus Motschulsky 1858 (=Megischius Guillebeau 1896, syn. nov.; Nematolibrus Sahlberg 1913, syn. nov.), Entomocnemus Guillebeau 1894 (=Stilbomimus Champion 1924, syn. nov.), Grouvelleus Guillebeau 1892 (=Ochrolitoides Champion 1924, syn. nov.; Litotarsus Champion 1925, syn. nov.), Litochrus Erichson 1845 (=Merobrachys Guillebeau 1895, syn. nov.), Litostilbus Guillebeau 1894 (=Pseudolitochrus Liubarsky 1993, syn. nov.), Ochrolitus Sharp 1889 (=Gorginus Guillebeau 1894, syn. nov.), Olibroporus Casey 1890 (=Parasemus Guillebeau 1894, syn. nov.), Olibrosoma Tournier 1889 (=Lichrotus Lyubarsky 1993, syn. nov.), Phaenocephalus Wollaston 1873 (=Phalacratomus Scott 1922, syn. nov.; Heterostilbus Champion 1924, syn. nov.), Phalacrinus Blackburn 1891 (=Sphaerostilbus Champion 1924, syn. nov.), Pseudolibrus Flach 1889 (=Biophytus Guillebeau 1894, syn. nov.; Polyaloxus Guillebeau 1894, syn. nov.), Pycinus Guillebeau 1893 (=Ochrodemus Guillebeau 1893, syn. nov.; Radinus Guillebeau 1893, syn. nov.; Euphalacrus Champion 1925, syn. nov.). Ten new genera and seven new species are described: Antennogasmus, gen. nov. (type species: A. cordatus, sp. nov.), Austroporus, gen. nov. (type species: A. victoriensis (Blackburn)), Malagasmus Gimmel, gen. nov. (type species: M. thalesi, sp. nov.), Malagophytus, gen. nov. (type species: M. steineri, sp. nov.), Neolitochrus, gen. nov. (type species: N. pulchellus (LeConte)), Paracylomus, gen. nov. (type species: P. asiaticus (Champion)), Platyphalacrus, gen. nov. (type species: P. lawrencei, sp. nov.), Ranomafanacrinus, gen. nov. (type species: R. nigrinus, sp. nov.), Steinerlitrus, gen. nov. (type species: S. warreni, sp. nov.), Sveculus, gen. nov. (type species: S. lewisi, sp. nov.). Generic reassignments resulted in 194 new combinations. Nine new names have been established for junior primary and secondary homonyms: Acylomus bicoloratus nom. nov. for Tinodemus bicolor Švec 2002; Acylomus lyubarskyi nom. nov. for Olibrus capriviensis Lyubarsky 1998; Acylomus sveci nom. nov. for Tinodemus reticulatus Švec 2002; Acylomus orientalis nom. nov. for Stilbus similis Švec 1992; Acylomus zdeneki nom. nov. for Afronyrus snizeki Švec 2006; Apallodes championi nom. nov. for Litolibrus ocellatus Champion 1925; Olibrus peringueyi nom. nov. for Olibrus consanguineus Péringuey 1892; Augasmus exquisitus nom. nov. for Litochrus pulchellus Blackburn 1895; Litochrus pronotalis nom. nov. for Augasmus bimaculatus Lyubarsky 1996. A type species is designated for Phalacrinus Blackburn 1891 (P. australis Blackburn 1891). Six new species-group synonymies are established: Acylomus ergoti Casey 1890 (=Tinodemus grouvellei Guillebeau 1894, syn. nov.), Acylomus curvolineatus (Champion 1924) (=Tinodemus meridianus (Švec 1992), syn. nov.; Olibrus stuporatus Lyubarsky 1994, syn. nov.), Xanthocomus attenuatus (Casey, 1890) (=Xanthocomus concinnus (Casey, 1916), syn. nov.; Stilbus thoracicus Casey, 1916, syn. nov.; Stilbus quadrisetosus Casey, 1916, syn. nov.). One name, Olibrus sternalis Casey 1916, is resurrected from synonymy. Lectotypes are designated for 23 nominal species. One genus and two species are excluded from Phalacridae: Sternosternus Guillebeau 1894 (with its type and only species, S. grouvelleiGuillebeau 1894) and Parasemus parvopallidus Lea 1932, both of which belong in Hydrophilidae. All 34 resulting genera in the family Phalacridae are keyed, described, and illustrated. A phylogenetic hypothesis based on analysis of a matrix of 98 morphological characters was created using parsimony. Results of these analyses were not robust enough at deep levels to create a new subfamilial or tribal classification, but nine genus-groups have been hypothesized.

A new family and two new genera of calcaxonian octocoral, including a redescription of Pleurogorgia militaris (Cnidaria:Octocorallia:Chrysogorgiidae) and its placement in a new genus

2021 ◽  
Author(s):  
Stephen D. Cairns ◽  
Ralf T. S. Cordeiro ◽  
Yu Xu ◽  
Zifeng Zhan ◽  
Philip Alderslade
Keyword(s):  
Deep Sea ◽  
Type Species ◽  
New Genus ◽  
Sensu Stricto ◽  
Type Material ◽  
New Genera ◽  
New Family ◽  
Phylogenetic Reconstructions ◽  
The Family ◽  
Molecular Phylogenetic

Golden corals (chrysogorgiids sensu lato) are conspicuous components in deep-sea gorgonian assemblages. Although common, their taxonomy still conflicts with evolutionary histories, mostly due to low character availability and poor taxonomic knowledge. This is the case for the genus Pleurogorgia, which has been frequently reported in ROV surveys, dominating hard-bottoms throughout the Indo-Pacific. Herein, molecular phylogenetic reconstructions based on mitochondrial and nuclear datasets, and examination of new and old type material led us to suggest new systematic arrangements for some of the genera. We create a new genus, Ramuligorgia, to accommodate Pleurogorgia militaris, redescribing it as Ramuligorgia militaris comb. nov. within the family Chrysogorgiidae sensu stricto. Additionally, we describe Aurogorgia tasmaniensis gen. nov. et sp. nov., including it and the type species, Pleurogorgia plana, within Pleurogorgiidae fam. nov.

scholarly journals A new species and two new genera of pinnotherid crabs from the northeastern Pacific Ocean, with a reappraisal of the subfamily Pinnotherinae de Haan, 1833 (Crustacea: Brachyura: Pinnotheridae)

Zootaxa ◽  
2009 ◽  
Vol 2022 (1) ◽  
pp. 29-44 ◽  
Author(s):  
ERNESTO CAMPOS
Keyword(s):  
New Species ◽  
New Genus ◽  
Sensu Stricto ◽  
Ventral Margin ◽  
New Genera ◽  
Basal Segment ◽  
The Third ◽  
Northeastern Pacific ◽  
To Receive ◽  
A New Species

Two monotypic genera, Enigmatheres new genus, and Bonita new genus, are described to receive Fabia canfieldi Rathbun, 1918, and Bonita mexicana new species respectively. Enigmatheres can be distinguished from other Pinnotheridae by the third maxilliped having a gently curved outer margin, with a carpus that is larger than the conical propodus and a dactylus that is inserted on the middle third of the ventral margin of the propodus, walking legs 2 that are asymmetrical in length and the dactyli of walking legs 1, 3 and 4 that are short, slender, conical, slightly curved up to hooked and hard tip. Bonita can be distinguished from other Pinnotheridae by the presence of two sulci on the carapace, protruding anterolateral margins of the carapace, walking leg 3 asymmetrical in length and larger than other walking legs, and walking leg 4 with a clavate propodus. These two new genera and 25 additional ones (nine with hesitation), including Pinnotheres Bosc, 1802 (type genus of Pinnotherinae de Haan, 1833), share a carapace that is soft and thin, walking legs 1-4 that are slender and feeble, antennae with a protuberance on the basal segment and the known zoea larvae being very similar, particularly with an abdomen that widens from somite 1 to 5 and a telson that is laterally convex and posteriorly trilobed. These adult and larval shared features support the monophyly of these genera and clearly diagnose the subfamily Pinnotherinae de Haan, 1833 sensu stricto.

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