Two new species of the problematic harpacticoid genus Itunella (Copepoda, Canthocamptidae)

Crustaceana ◽  
2021 ◽  
Vol 94 (8) ◽  
pp. 951-972
Author(s):  
Tomislav Karanovic
Keyword(s):  
Sandy Beach ◽  
East Coast ◽  
Intraspecific Variability ◽  
Alternative Methods ◽  
Valid Species ◽  
Single Female ◽  
Apical Seta ◽  
Dichotomous Key ◽  
Polymorphic Species ◽  
Species Descriptions

Abstract The genus Itunella Brady, 1896 has a troubled taxonomic past, partly because of paucity of its members, but mostly because of inadequate research. A lack of detail in species descriptions and redescriptions, absence of alternative methods for testing species hypotheses, combined with a notion that most marine and estuarine animals have wide distributions and enormous intraspecific variability, all resulted in blurring of some interspecific boundaries, synonymizing without examination of the type material, and founding species diagnoses on dubious characters. Itunella yeondeokensis sp. nov. is described here in great detail from a small sandy beach on the east coast of Korea. It differs from all reported and illustrated congeners by an extremely long inner apical seta on the third exopodal segment of second to fourth swimming legs. This is the second member of this genus from Korea, the first one being described from three estuaries also on the east coast. All other congeners are European species. An overview of all published species and records of this genus is provided, as well as a dichotomous key to valid species to aid in their identification. Itunella kieferi sp. nov. is a new name for a single female from Germany, previously reported as a member of a widely distributed and polymorphic species.

Systematic revision and morphological phylogenetic analysis of Anchylorhynchus Schoenherr, 1836 (Coleoptera, Curculionidae: Derelomini)

Zootaxa ◽  
2020 ◽  
Vol 4839 (1) ◽  
pp. 1-98 ◽  
Author(s):  
BRUNO A. S. DE MEDEIROS ◽  
SERGIO A. VANIN
Keyword(s):  
Common Ancestor ◽  
Strong Support ◽  
Taxonomic Revision ◽  
Valid Species ◽  
Systematic Revision ◽  
Software Pipeline ◽  
Plant Associations ◽  
Dichotomous Key ◽  
The Common ◽  
Species Descriptions

Anchylorhynchus Schoenherr is a genus of palm-associated weevils currently including 22 described species in the Neotropics. These weevils engage in brood pollination interactions with species in at least four genera of palms (Arecaceae), representing an emerging system for the study of mutualisms. Here we revise the taxonomy of Anchylorhynchus and propose the first phylogenetic hypothesis for the group, based on morphology. Anchylorhynchus chrysomeloides sp. nov., Anchylorhynchus goiano sp. nov., Anchylorhynchus imitator sp. nov., Anchylorhynchus latipes sp. nov., Anchylorhynchus multisquamis sp. nov. and Anchylorhynchus rectus sp. nov. are described, Anchylorhynchus gottsbergerorum Vanin is a new junior subjective synonym of Anchylorhynchus bicarinatus O’Brien, and Anchylorhynchus eriospathae Bondar and Anchylorhynchus pictipennis Hustache are new junior subjective synonyms of Anchylorhynchus tremolerasi Hustache, resulting in 25 valid species for the genus. We provide genus and species descriptions with a new dichotomous key to the species and updated information on geography and host associations based on museum records and extensive new collections. We also produce a new morphological matrix with 113 characters, 11 of them based on measurements while accounting for allometry, correlation and power to delimit groups. The software pipeline to produce these characters was encoded in a graphical user interface named DiscretzR, made available here. Analysis of this matrix under parsimony and Bayesian inference resulted in strong support for the monophyly of Anchylorhynchus, but weaker support for most clades within the genus. Reconstruction of the host plant associations indicates that the common ancestor of Anchylorhynchus visited flowers of Syagrus Mart., with later transitions to other genera restricted to one of the major clades of Anchylorhynchus. This taxonomic revision with the first phylogeny for the group provides a foundation for future evolutionary studies in the genus. 

Rediscovery of Calymmochilus russoi Gibson, 1995 (Hymenoptera, Chalcidoidea, Eupelmidae), and revision of European Calymmochilus Masi, 1919

Zootaxa ◽  
2018 ◽  
Vol 4504 (4) ◽  
pp. 501
Author(s):  
LUCIAN FUSU ◽  
RICHARD R. ASKEW ◽  
ANTONI RIBES
Keyword(s):  
Host Record ◽  
Original Description ◽  
Type Specimen ◽  
First Record ◽  
Valid Species ◽  
Single Female ◽  
European Species

The European species of Calymmochilus Masi (Hymenoptera, Eupelmidae) are revised. Calymmochilus atratus Masi stat. rev. is removed from synonymy under C. subnubilus (Walker) and treated as a valid species. A lectotype is designated for Calymmochilus atratus. The single extant type specimen of Eupelmus subnubilus Walker is considered as lectotype. Calymmochilus bini Fusu sp. n. is described from a single female collected in Sardinia. A female of Calymmochilus russoi Gibson is reported from Spain as a parasitoid in galls of Parapodia sinaica (Frauenfeld) (Lepidoptera, Gelechiidae) on Tamarix (Tamaricaceae), a new national and host record. The species is redescribed and illustrated, this being the first record of the species after its original description. An illustrated key to females and, when known, males of the now six recognized European species of Calymmochilus is given and available biological and distributional data are reviewed. 

Fieber’s unpublished colour plates allow reassessing some of his Cixius species (Insecta: Hemiptera, Fulgoromorpha, Cixiidae)

Zootaxa ◽  
2018 ◽  
Vol 4482 (1) ◽  
pp. 91
Author(s):  
GERNOT KUNZ ◽  
WERNER E HOLZINGER ◽  
ADELINE SOULIER-PERKINS
Keyword(s):  
19Th Century ◽  
Valid Species ◽  
The Status ◽  
Species Descriptions ◽  
The 19Th Century

Franz Xaver Fieber was a leading Hemiptera taxonomist in the 19th century. The recent discovery of his unpublished drawings that go along with the original handwritten manuscript allow a reassessment of species descriptions from this century. In addition, we present an alphabet of Fieber's handwriting. We give an overview on the Cixiidae species he had described and reassess the status of the species names Cixius brachycranus Scott, 1870, Cixius intermedius Scott, 1870, Cixius pinicola Fieber, 1876, Tachycixius venustulus (Germar, 1830) and Tachycixius distinctus (Signoret, 1865). T. venustulus and T. distinctus are regarded as valid species. The synonymy of C. pinicola with T. venustulus is invalidated and C. pinicola is placed in synonymy with T. distinctus. 

Taxonomic Review of the perciform fish genus Acanthistius from the east coast of southern Africa, with description of a new species and designation of a neotype for Serranus sebastoides Castelnau, 1861

Zootaxa ◽  
2010 ◽  
Vol 2352 (1) ◽  
pp. 59 ◽  
Author(s):  
PHILLIP C. HEEMSTRA
Keyword(s):  
South Africa ◽  
New Species ◽  
South America ◽  
Southern Africa ◽  
East Coast ◽  
Valid Species ◽  
Shallow Waters ◽  
Single Specimen ◽  
Warm Temperate ◽  
A New Species

The genus Acanthistius Gill, 1862 comprises ten putative valid species occurring in shallow warm-temperate waters of the Southern Hemisphere: South America (coasts of Ecuador, Peru, Chile, Brazil, and Argentina) southern Africa (Namibia and South Africa), southern Australia, New Zealand, Lord Howe, Norfolk, Kermadec and Easter, and Sala y Gómez islands. Two species: Acanthistius sebastoides (Castelnau, 1861) and Acanthistius sp are known from shallow waters of the east coast of South Africa (Heemstra and Randall, 1986). The latter taxon, previously known from a brief description of a single specimen, is here described from 23 specimens and named Acanthistius joanae. Acanthistius sebastoides is redescribed from 13 specimens and compared with A. joanae and species of Acanthistius known from South America and Australia. A neotype is designated for Serranus sebastoides Castelnau, 1861, as the two syntypes are apparently lost.

Redescription and molecular characterization of Crenidens macracanthus Günther, 1874 (Pisces: Sparidae), and first record of C. indicus Day, 1873 in the eastern Indian Ocean

2020 ◽  
Vol 100 (7) ◽  
pp. 1147-1153
Author(s):  
Subal Kumar Roul ◽  
N. S. Jeena ◽  
Shubhadeep Ghosh ◽  
Prathibha Rohit
Keyword(s):  
Indian Ocean ◽  
Tamil Nadu ◽  
East Coast ◽  
Eastern Indian Ocean ◽  
Valid Species ◽  
Morphological Description ◽  
Type Specimens ◽  
Meristic Characters ◽  
East Coast Of India ◽  
North East

AbstractCrenidens macracanthus was originally described in 1874 based on a single specimen collected from Chennai (Madras), south-east coast of India. In 1875, the species was synonymized with C. indicus without citing any valid reason. Since then, no taxonomic studies have been attempted for the genus Crenidens, except in 2013 the species was resurrected from synonymy and redescribed as a valid species based on the holotype and non-type specimen. In view of the fact that C. macracanthus is a poorly known species, it is redescribed based on examination of 30 additional specimens of 105.8–162.2 mm SL, collected from Puri, Odisha, north-east coast of India (Bay of Bengal) from 2017–2019, using morphological and molecular examinations. Our study provides a detailed morphological description, first colour photographs and phylogenetic analysis using COI barcodes of the species. The study has expanded the range in several morpho-meristic characters in comparison with the type and non-type specimens described earlier. The species in fresh condition can be easily distinguished from its two congeners (C. crenidens and C. indicus) by the yellowish tip of the lower caudal-fin lobe. Our study has also extended the distribution range of C. indicus (previously known only from the north-eastern Arabian Sea) to the eastern Indian Ocean, based on examination of a preserved specimen collected from Tuticorin, Tamil Nadu.

Systematic revision of Ericydeus Pascoe (Coleoptera: Curculionidae)

1995 ◽  
Vol 26 (4) ◽  
pp. 393-424 ◽  
Author(s):  
Analia A. Lanteri
Keyword(s):  
United States ◽  
New Species ◽  
United States Of America ◽  
Cladistic Analysis ◽  
The United States ◽  
Valid Species ◽  
Systematic Revision ◽  
Distribution Maps ◽  
Dichotomous Key ◽  
Three New Species

AbstractThe genus Ericydeus Pascoe (Polydrosinae: Naupactini) distributed throughout the United States of America up to Argentina is revised and a cladistic analysis including 16 species is conducted. Three new species are described: E. bahiensis, E. argentinensis and E. cupreolus. Ericydeus humeralis Hustache is synonymized under E. nigropunctatus (Chevrolat); and E. modestus viridans (Boheman) and E. modestus duodecimpunctatus (Dalla-Torre, Emden & Emden) are elevated to species rank. Other valid species are: E. hancocki (Kirby), E. schoenherri (Perty), E. sedecimpunctatus (Linnaeus), E. yucatanus (Champion), E. roseiventris (Champion), E. quadripunctatus (Champion), E. modestus (Gyllenhal), E. forreri (Champion), E. lautus (LeConte) and E. placidus (Horn). In the cladogram obtained the species from South America gather in a clade (E. argentinensis, E. sedecimpunctatus, E. nigropunctatus, E. schoenherri, E. hancocki, and E. bahiensis) and the species from Central and North America form a separate clade (E. yucatanus, E. roseiventris - E. quadripunctatus, E. cupreolus, E. viridans - E. modestus, E. duodecimpunctatus, E. forreri, E. lautus - E. placidus). The character evolution follows a southern-northern direction. The paper includes a redescription of the genus, redescriptions or descriptions of its 16 species, a dichotomous key, habitus photographs, drawings of diagnostic structures, distribution maps, a cladogram, and a discussion of the phylogeny and distribution of the genus.

Two new species of Paramphimonhystrella (Nematoda, Monhysterida, Xyalidae) from the deep-sea sediments in the Western Pacific Ocean and adjacent shelf seafloor

Zootaxa ◽  
2017 ◽  
Vol 4344 (2) ◽  
pp. 308
Author(s):  
BENZE SHI ◽  
TINGTING YU ◽  
KUIDONG XU
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Water Depth ◽  
Deep Sea ◽  
Western Pacific ◽  
Valid Species ◽  
Western Pacific Ocean ◽  
Dichotomous Key ◽  
Two New Species ◽  
Deep Sea Sediments

Two new species of marine nematodes, Paramphimonhystrella longispicula sp. n. in the deep-sea sediments from the Philippine Sea in the tropical Western Pacific Ocean with the water depth of 3920–5176 m and P. eurystoma sp. n. in the shelf seafloor from the East China Sea with the water depth of 55–64 m, are described. Both species possess long and slender spicules, which are present only in the congener P. barbula, a species discovered from the continental slope of New Zealand. Paramphimonhystrella longispicula sp. n. can be easily distinguished from P. barbula by the relatively broader buccal cavity, the unequally long cervical setae and a higher number of terminal setae. Paramphimonhystrella eurystoma sp. n. is unique in having a peculiar gubernaculum with two proximal capitula and a peculiar hammer-shaped cuticularized piece posterior to vulva, by which it can be distinguished from P. longispicula sp. n. and P. barbula as well as other congeners. Paramphimonhystrella longispicula sp. n. differs from P. eurystoma sp. n. also by the number of terminal setae (4 vs. 2). A dichotomous key to nine valid species of Paramphimonhystrella is provided. 

scholarly journals Taxonomic problems in the subgenus Meloehelea Wirth of the genus Atrichopogon Kieffer (Diptera: Ceratopogonidae) inferred from both morphological and molecular characters

2008 ◽  
Vol 19 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Andrea Tóthová ◽  
Jan Knoz ◽  
Radim Sonnek ◽  
Josef Bryja ◽  
Jaromír Vaňhara
Keyword(s):  
Morphological Variability ◽  
Intraspecific Variability ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Valid Species ◽  
European Species ◽  
Rdna Sequences ◽  
16S Rdna Sequences ◽  
Molecular Characters

The classification of Meloehelea (Ceratopogonidae) species is based on morphological characters. The taxonomic revision of generally well-known species recovered interesting facts on possible geographic intraspecific variability or on the presence of an additional valid species. In this study, 5 European species and 2 species from the U.S.A. and Canada have been compared based on their morphological characters. Subsequently, the 16S rDNA sequences analyses of well known European species have been performed to confirm the characters mentioned in the determination key ofthis subgenus. Although, this study was limited by the number of examined non-European specimens, it provides some interesting facts on the possible morphological variability of well-known species and also an initial phylogenetic backbone for the progressive reconstruction of infrageneric relationships within the genus Atrichopogon.

scholarly journals Taxonomy of family Benthopectinidae (Echinodermata: Asteroidea) in the Mexican waters of the Gulf of Mexico

2021 ◽  
Vol 69 (Suppl.1) ◽  
pp. 118-131
Author(s):  
Magdalena De los Palos-Peña ◽  
Francisco-Alonso Solís-Marín ◽  
Alfredo Laguarda-Figueras
Keyword(s):  
Natural History ◽  
Gulf Of Mexico ◽  
Deep Sea ◽  
Smithsonian Institution ◽  
Valid Species ◽  
National Museum ◽  
Sea Stars ◽  
Dichotomous Key ◽  
The Family ◽  
The World

Introduction: The family Benthopectinidae is composed of deep-sea sea stars distributed in eight genera and approximately 70 valid species. So far, only five species of this family have been reported for the Mexican waters of the Gulf of Mexico. Objective: To provide an updated local taxonomy of this family. Methods: A total of 566 specimens deposited in the Echinoderm National Collection, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, and the National Museum of Natural History, Smithsonian Institution, collected from 1952 to 2015, were taxonomically examined. Results: We present descriptions, photographs, and an illustrated dichotomous key for Benthopecten simplex simplex, Cheiraster (Barbadosaster) echinulatus, Cheiraster (Cheiraster) planus, Cheiraster (Christopheraster) blakei, and Cheiraster (Christopheraster) mirabilis in the region. Conclusions: The five studied species represent 6 % of the world biodiversity of the family and can now be identified with the illustrated key.

scholarly journals Four new species of troglomorphic Coecobrya Yosii, 1956 (Collembola, Entomobryidae) from Thailand based on morphological and molecular evidence, with an updated key of Thai troglomorphic species

2021 ◽  
Vol 41 ◽  
pp. 1-42
Author(s):  
Areeruk Nilsai ◽  
Matsapume Detcharoen ◽  
Nerivania Nunes Godeiro ◽  
Sopark Jantarit
Keyword(s):  
New Species ◽  
Large Body ◽  
Nuclear Gene ◽  
The Body ◽  
Valid Species ◽  
Species Discrimination ◽  
Molecular Evidence ◽  
Orange Pigment ◽  
Unique Character ◽  
Dichotomous Key

Four new species of troglomorphic Coecobrya Yosii, 1956 are described from caves located in the central and northeastern regions of Thailand. Coecobrya whittenisp. nov. and C. troglobiasp. nov. are from Khon Kaen province, C. ellisisp. nov. is from Phetchabun province and C. phitsanulokensissp. nov. is from Phitsanulok province. They all exhibit remarkable troglobitic characters i.e. elongated antennae, legs and furca, slender claw complex and large body size. Coecobrya whittenisp. nov. is similar to C. troglobiasp. nov. and they were found a distance of only 3.4 km from each other. However, they are mainly different in the number of An mac on dorsal head and number of chaetae of Th. II. Likewise, C. ellisisp. nov. is similar to C. phitsanulokensissp. nov.. However, they differ in the number of An mac on the dorsal head, the number of central mac on Abd. II, central mac on Abd. IV, lateral mac on Abd. IV and the number of inner teeth of the claw. Moreover, C. ellisisp. nov. has orange pigment dots on the body, a unique character, considering that all other troglomorphic Coecobrya species in Thailand are devoid of pigmentation. The results of the molecular approach based on two partial mitochondrial markers (COI and 16S rDNA) and a nuclear gene fragment (28S rDNA) supported the results of morphological species discrimination in separating the four nominal populations as valid species. An updated dichotomous key of Thai troglomorphic Coecobrya species is also given.

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