Generic Diagnosis Research Articles

First record of the genus Sceloattalus Wittmer, 1966 (Coleoptera, Malachiidae) from China, with description of a new species.

The genus Sceloattalus Wittmer, 1966 is recorded from China for the first time. A new species, S.nigroprominens Tong & Yang, sp. nov., is described and illustrated from Xizang Autonomous Region of China. This new species is the fourth member of Sceloattalus and can be easily distinguished from others by the yellow antennae with a small black spot at apex of last antennomere, black elytra without metallic lustre, all tarsi yellow, and hind tibiae yellow to black. The generic diagnosis of Sceloattalus is resummarized. An identification key to all known species of Sceloattalus is also updated.

Revision of the oribatid mite genus Amboroppia (Acari, Oribatida, Oppiidae), with description of a new subgenus and species from Mexico

A new oribatid mite subgenus of the genus Amboroppia (Oribatida, Oppiidae) – A. (Quintanoppia) subgen. n., with A. (Quintanoppia) defectofossulata sp. n. as type species – is described, based on material collected from Mexico. It can be distinguished from the nominate subgenus by the absence concavities between rostrum and transcostula and behind transcostula, and the presence of strong teeth on lateral sides of prodorsum. A revised generic diagnosis, identification key and data on distribution and habitats of representatives of Amboroppia are presented.

New arboreal mite species of Oribatulidae and Oripodidae (Acari, Oribatida, Oripodoidea) from Vietnam

ABSTRACT Two new oribatid mite species—Phauloppia dilatata sp. nov. (Oribatulidae) and Pirnodus partiarus sp. nov. (Oripodidae)—are described, based on adults collected from tree branches of Haldina cordifolia in southern Vietnam. The genus Pirnodus is recorded for the first time in the Oriental region. The generic diagnoses for Phauloppia and Pirnodus are revised. The identification keys to the Oriental representatives of Phauloppia and the known representatives of Pirnodus are provided. Pseudopirnodus madegassus is transferred to Pirnodus; the initial placement of Pirnodus domrowi in Pirnodus is confirmed. http://zoobank.org/urn:lsid:zoobank.org:pub:298B44CE-C965-4B10-8B0F-A3CDB9BAFD57

Contribution to the knowledge of the oribatid mite genus Arthrovertex (Acari, Oribatida, Scutoverticidae), with description of a new arboreal species from Vietnam

ABSTRACT A new arboreal species of Arthrovertex (Oribatida, Scutoverticidae)—A. kornilovi sp. nov.—is described, based on adults collected from tree branches of Dipterocarpus alatus in Cat Tien National Park, Vietnam. A generic diagnosis, identification key, distribution, and habitats of representatives of Arthrovertex are presented. http://zoobank.org/urn:lsid:zoobank.org:pub:15169867-0FAB-43D6-94F4-9D3B4F4A9F47

Contribution to knowledge of the oribatid mite genus Symbioribates (Acari, Oribatida, Symbioribatidae), with descriptions of two new arboreal species from Vietnam.

The family Symbioribatidae is recorded in Vietnam for the first time. Two new arboreal species of SymbioribatesS. bimorphus sp. nov. and S. tripartitus sp. nov.are described, based on adults (males and females) collected from tree branches of Dipterocarpus alatus in Cat Tien National Park, Vietnam; the former species is sexually dimorphic, the latter species is the first non-sexually dimorphic representative within the genus. The generic diagnosis is presented. An identification key, distribution and habitats to the known representatives of Symbioribates are provided.

A new fossil wood of Detarioideae from the Boa Vista Basin, Upper Oligocene (Northeast Brazil): Comparisons with living and fossil Leguminosae Subfamilies. Paleoclimate and biogeography inferences for the Leguminosae story

A new genus and species of Leguminosae wood has been discovered and described from the Upper Oligocene in Northeast Brazil. The well-preserved tissues and unique diagnostic characters allowed for its assignment to Goniorrhachisinoxylon sergioarchangelskii nov. gen. et sp. (Detarioideae). Leguminosae woods have a rich fossil record, and in order to establish this new genus and species, detailed comparisons were made among the living subfamilies Cercidoideae, Detarioideae, Duparquetioideae, Dialioideae, and Caesalpinioideae, and a revision of the generic diagnoses of caesalpiniod fossil woods (except the Mimosoid clade) was conducted. By examining the presence of some wood characters and using modern related forms, it was inferred that seasonal (possibly monsoonal) palaeoclimatic conditions existed in Northeast Brazil at the end of the Oligocene. This new record from the Boa Vista Basin can contribute to our understanding of the origin and distribution of some members of the Leguminosae.

New species of Tuberemaeus (Acari, Oribatida, Scheloribatidae) from trees in Southern Vietnam

Two new species of Tuberemaeus (Oribatida, Scheloribatidae)—T. salavatulini sp. nov. and T. bifossatus sp. nov.—are described, based on adults collected from tree branches of Haldina cordifolia in Cat Tien National Park, southern Vietnam. The generic diagnosis of Tuberemaeus is revised. An identification key to known species of Tuberemaeus is given.

Contribution to the knowledge of the oribatid mite genus Gymnobodes (Acari, Oribatida, Carabodidae), with description of a new species from Mexico

A new species of Gymnobodes (Oribatida, Carabodidae) – G. paraminimus sp. n. – is described from leaf litter of secondary semi-evergreen tropical forest in Mexico. A revised generic diagnosis, identification key and data on distribution and habitats of representatives of the genus are presented.

Contribution to the knowledge of the oribatid mite genus Discoppia (Acari, Oribatida, Oppiidae)

The supplementary description of the oribatid mite species Discoppia (Cylindroppia) cylindrica (Pérez-Íñigo, 1965) (Oribatida, Oppiidae) is presented, based on materials collected from deep layers of coastal sandy soils in the Republic of Dagestan, eastern Caucasus. The morphology of exobothridial seta, gnathosoma and ovipositor, and the identification of leg setae and solenidia are given for the first time for this species. The revised generic diagnosis, identification key, distribution, and habitats of all known representatives of Discoppia Balogh, 1983 are presented. Some taxonomic nuances within Discoppia are discussed, resulting in the following proposals: Oppia bifidus Bayoumi and Al-Khalifa, 1985 is a junior synonym of D. (C.) cylindrica; Oppia agricola Fujikawa, 1982 is not synonym of D. (C.) cylindrica and transferred to the genus Microppia Balogh, 1983; Oppia tenuis Hammer, 1958 is not representative of Discoppia; Discoppia (Cylindroppia) rostroincisa Subías and Rodríguez, 1986 n. stat. (instead of the existing subspecies status). Together with D. (C.) cylindrica, in the same samples, two rare Oppiidae species were found: Oxyoppia (Oxyoppiella) minuscula Hugo-Coetzee, Lotfollahi, Abbasi-Kalo and Movahedzade, 1917 (known only from the open habitats in Iran) is first recorded in Russia; Graptoppia (Stenoppia) boucheri Ermilov and Frolov, 2021 (known from passalid beetles collected in Ghana and Gabon, West Africa) is first found in the Palaearctic. Both findings in Dagestan are among the northernmost records of their semicosmopolitan subgenera.

A new species of Macropelopia Thienemann, 1916 (Diptera: Chironomidae) from Southern Brazil.

We report a new species of Macropelopia discovered in southern Brazil, with detailed illustrations and descriptions of all life stages. In addition, we provide an identification key specific to males of neotropical Macropelopia species, together with an amendment to the generic diagnosis.

At the edge of the sea: the supralittoral nemertean, Acteonemertes orientalis sp. nov. (Nemertea: Eumonostilifera: Plectonemertidae) from Japan

Ribbon worms (phylum Nemertea) are found in oceans worldwide; however, only a few inhabit terrestrial, semiterrestrial and freshwater environments. In our study, we describe Acteonemertes orientalis sp. nov., a new species of Plectonemertidae Gibson, 1990 and the first plectonemertid discovered in Japan. The species was found in the supralittoral zone, from which nemerteans have rarely been reported and inhabits areas under rocks, wave-dissipating concrete blocks, and fallen leaves and stocks, along the coast of the Sea of Japan. Multi-locus phylogenetic analyses based on two mitochondrial (16S rRNA and cytochrome c oxidase subunit I) and two nuclear gene markers (18S rRNA and 28S rRNA) revealed that A. orientalis sp. nov. formed a clade with Leptonemertes cf. chalicophora collected from Florida. Although the external and internal morphology of A. orientalis sp. nov. is largely consistent with the generic diagnosis, this species differs in having a large proboscis. Based on the molecular and morphological data, we propose to amend the diagnosis of Acteonemertes by excluding proboscis size. ZooBank: urn:lsid:zoobank.org:pub:BBBE9549-5DCE-424F-9A39-930F8243C28B

New species of Pulchroppia (Acari, Oribatida, Oppiidae) from Indonesia

Two new species of the genus Pulchroppia (Oribatida, Oppiidae), P. richterae n. sp. and P. marianae n. sp., are described, based on materials collected from litter of secondary rainforest in Sumatra, Indonesia. Generic diagnosis and an identification key to the known species of Pulchroppia are presented.

Clarification of Phylogenetic Relationships among Chinese Nemacheilids with Tube-Shaped Anterior Nostrils, with a Description of a New Genus and Two New Species

Nostril structures are important characteristics for generic diagnosis in Nemacheilidae and Cobitidae. Based on phylogenetic analysis, we found that 10 genera within Nemacheilidae (Eonemachilus, Guinemachilus, Lefua, Micronemacheilus, Oreonectes, Paranemachilus, Protonemacheilus, Traccatichthys, Troglonectes, and Yunnanilus) shared tube-shaped anterior nostrils and formed a monophyletic group. Morphologically, the location between the anterior and posterior nostrils was divided into three types: (i) separated, i.e., a distance greater than 1.5 times the diameter of the posterior nostril; (ii) adjacent, i.e., a distance shorter than the diameter of the posterior nostril; and (iii) closely set, i.e., posterior margin of the anterior nostril connected to the anterior margin of the posterior nostril. Thus, the 10 genera can be distinguished based on nostril features. Additionally, we describe one new genus, Guinemachilus gen. nov., and two new species, Guinemachilus pseudopulcherrimus sp. nov. and Paranemachilus chongzuo sp. nov.

(2952) Proposal to conserve the name Coccidioides posadasii against Posadasia esferiformis, Coccidium posadasi, Pseudococcidioides mazzae, Geotrichum louisianoideum, Glenospora meteuropea, Glenospora metamericana and Trichosporon proteolyticum (Ascomycota)

(2952) Proposal to conserve the name <i>Coccidioides posadasii</i> against <i>Posadasia esferiformis</i>, <i>Coccidium posadasi</i>, <i>Pseudococcidioides mazzae</i>, <i>Geotrichum louisianoideum</i>, <i>Glenospora meteuropea</i>, <i>Glenospora metamericana</i> and <i>Trichosporon proteolyticum</i> (<i>Ascomycota</i>)

First record of the genus Parapyroppia Pérez-Íñigo &amp; Subías, 1979 (Acari, Oribatida, Ceratoppiidae) from China, with description of a new species

The oribatid mite genus Parapyroppia Pérez-Íñigo &amp; Subías, 1979 (Ceratoppiidae) is reported in China for the first time. During investigation of soil biodiversity in northeast China in 2021, a new species, Parapyroppia changbaiensis sp. nov., was found from soil and litter of north slope of Changbai Mountain in Erdaobaihe Town, Jilin Province. The main purpose of study is to describe and illustrate this new species. In addition, an updated generic diagnosis, a checklist and a key to world species of Parapyroppia are presented.

RAJONCHOCOTYLE CERFONTAINE, 1899 (MONOGENEA: HEXABOTHRIIDAE) SPECIES FROM SOUTH AFRICA, WITH DISCUSSION OF THE LITERARY ACCOUNTS OF R. EMARGINATA (OLSSON, 1876).

Rajonchocotyle Cerfontaine, 1899, species are blood-feeding parasites on the gills of rajiforms. Eight species are considered valid, the most recent of which was described just after World War II. Many of the original descriptions of Rajonchocotyle species are limited in diagnostic value, and comparative museum material is scanty. The genus requires revision, and in support thereof, we provide detailed redescriptions for Rajonchocotyle albaCerfontaine, 1899, from the type host Rostroraja alba (Lacepède, 1803) and Rajonchocotyle emarginata (Olsson, 1876), Sproston, 1946, from 2 new host records, Raja straeleni Poll, 1951, and Leucoraja wallacei (Hulley, 1970), from South Africa, a new locality record. The generic diagnosis for Rajonchocotyle is amended to include greater details of the male reproductive system and confirms Paul Cerfontaine's and Nora Sproston's historic observations of the morphology of the male copulatory organ consisting of a separate proximal seminal vesicle and a distal cirrus. The lectotype of Rajonchocotyle kenojeiYamaguti, 1938, is assigned, and a comprehensive Rajonchocotyle-host species list is provided, highlighting species records that require further verification, and the purported global host range of R. emarginata is discussed.

Mysid subfamily Boreomysinae (Crustacea: Mysida: Mysidae) in the southeast Australian deep-sea

The deep-water mysid crustaceans of Australia have been barely known. Recent explorations of RV Investigator (CSIRO) in the southeast Australian waters discovered a unique fauna. In this special study of the marine subfamily Boreomysinae (family Mysidae) in Australia, five species from both genera Boreomysis and Neobirsteiniamysis are reported, including two new species for science: B. inopinata sp. nov., B. sibogae, B. sphaerops, B. urospina sp. nov. and N. inermis. Among the members of the subfamily, only B. sibogae has been previously known from Australia. The genus Neobirsteiniamysis and its bipolar-amphitropical species N. inermis are firstly recorded in Australia. Boreomysis inopinata sp. nov. has additional spinules on the outer spine of the antennal scale, which are not found in other species of the subfamily. Boreomysis urospina sp. nov. has the longest first segment of the uropodal exopod, laterally terminated by three spiniform setae; and its uropodal endopod is armed with up to five medial spiniform setae, the largest number in the subfamily. This species is included in a newly established subgenus Petryashovia subgen. nov., which unites epi-mesopelagic boreomysines, lacking the rostral projection, having rather small ventrolateral lobes of the carapace, and the 1-segmented propodus of the pereopods. The subfamily and generic diagnoses are updated. Additionally, a fragment of the mtDNA COI gene was sequenced for most of the studied species.

Taxonomic contribution to the knowledge of the oribatid mite genus Schalleria (Acari, Oribatida, Microzetidae), with description of a new species from Cuba

A new species of Schalleria (Oribatida, Microzetidae)—S. (Paraschalleria) engelbrechti sp. nov.—is described from leaf litter of mixed forest in Cuba; it is similar to S. (P.) forceps in presence of bacilliform basal prodorsal apophysis, but differs by smaller body size, the morphology of the first lobed structure, lamella, bothridial seta, epimeral setae 3c, 4c, distal part of prodorsal apophysis, and the length and morphology of interlamellar seta. A new generic diagnosis of Schalleria is presented. An identification key to known species of the genus is provided.

Looks are deceiving: a cladistic analysis, three new species, and a new diagnosis of Paravima Caporiacco, 1951 (Opiliones: Agoristenidae)

A morphological cladistic analysis, consisting of 45 terminals and 58 characters was performed to evaluate the monophyly of the genusParavimaCaporiacco, 1951, and its relationship to other Leiosteninae. The analysis resulted in two most parsimonious trees, all recoveringParavimaas monophyletic with the inclusion of two species formerly described inAvimaRoewer, 1949, therefore, the following nomenclatural acts are herein proposed:Paravima plana(Goodnight &amp; Goodnight, 1949)comb. nov., andParavima quirozi(González-Sponga, 1981)comb. nov.,Avima vigirima(Villarreal-M &amp; Rodríguez-Manzanilla, 2003) is here considered as a junior subjective synonym ofP. quirozi(González-Sponga, 1981)comb. nov.,Paravima acanthoconusVillarreal-Manzanilla &amp; DoNascimiento, 2005 is here considered as a junior subjective synonym ofParavima propespeluncaGonzález-Sponga, 1987, andParavima flumencaurimarensisGonzález-Sponga, 1987 is here considered as a junior subjective synonym ofParavima goodnightorumCaporiacco, 1951. Additionally, three new species are described:P. lokurasp. nov.(Tamá National Natural Park, Norte de Santander department) andP. magistrisp. nov.(Los Tunos Natural Reserve, Cundinamarca department), both from Colombia; andP. totorosp. nov.(Henri Pittier National Park, Aragua state) from Venezuela. Finally, an emended generic diagnosis, a key for all the species, and a distributional map are presented.

A revision of the West African freshwater crab genus Afrithelphusa Bott, 1969 (Brachyura: Deckeniidae: Deckeniinae) based on new morphological and genetic data

ABSTRACT The freshwater crab genus Afrithelphusa Bott, 1969, is endemic to Sierra Leone and Guinea and comprises four species: A. afzelii Colosi, 1924, A. gerhildae Bott, 1969, A. leonensis (Cumberlidge, 1987), and A. monodosa (Bott, 1959). Afrithelphusa taxonomy is reviewed based on type material and newly obtained undescribed specimens. The species are redescribed, based on new morphological and genetic data, their amended diagnostic features are provided, and the generic diagnosis is updated. An identification key is provided to distinguish between the four Afrithelphusa species, and a tree of phylogenetic relationships based on two mtDNA loci (COI and 16S RNA) is provided, which supports the continued recognition of this genus and its assigned species.