Systematic Parasitology最新文献

{"title":"Evidence from integrative taxonomy reveals non-monophyly in Pseudocharopinus (Copepoda: Lernaeopodidae), with description of a new species from the Southwestern Atlantic.","authors":"Martin Miguel Montes, Raúl Castro-Romero, Nelson Bovcon, Nicolas Ostoich, Emilia Valerga, Mariela Theiller, Darío Balcazar","doi":"10.1007/s11230-025-10251-x","DOIUrl":"10.1007/s11230-025-10251-x","url":null,"abstract":"<p><p>A new species, Pseudocharopinus tenshken n. sp., is described and illustrated as a parasite of juvenile Squalus acanthias from Argentine waters in the South Atlantic. Although morphologically similar to Pseudocharopinus bicaudatus, a species widely distributed on the same host, distinct morphological differences are evident. The new species differs from P. bicaudatus in its dorsal shield, which is more elongated and has more developed sclerites. Additionally, the cephalothorax of the new species reaches 82% of the trunk length, whereas it is shorter in P. bicaudatus. In contrast, the maxilla in P. bicaudatus extends up to 65% of the trunk length, while in P. tenshken n. sp., it reaches 76% of the trunk length. These morphological distinctions are supported by a genetic divergence of 17% from P. bicaudatus. In the COI phylogenetic tree, a strongly supported clade is observed, consisting of (Pseudocharopinus malleus (P. bicaudatus + Lernaeopoda bivia)). Then, Salmincola spp. appears in a clade with low support, followed by Pseudocharopinus pillai. Later, another strongly supported clade includes (Pseudocharopinus tenshken n. sp. (Brianella corniger + Pseudocharopinus pteromylaei)). Based on our results, the genus Pseudocharopinus should be considered non-monophyletic. These findings suggest that at least two independent Lernaeopodid infection events occurred in chondrichthyans.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 6","pages":"56"},"PeriodicalIF":1.2,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145076540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Catadiscus marielaosornae n. sp. (Digenea: Diplodiscidae) infecting the intestine of Peters' thin-toed frog, Leptodactylus petersii (Steindachner) (Anura: Leptodactylidae) from the Yahuarcaca Lake System, Amazon River (Leticia, Colombia), with phylogenetic analysis.","authors":"Kamila Cajiao-Mora, José Rancés Caicedo-Portilla, John H Brule, Haley R Dutton, Stephen A Bullard","doi":"10.1007/s11230-025-10250-y","DOIUrl":"10.1007/s11230-025-10250-y","url":null,"abstract":"<p><p>We describe Catadiscus marielaosornae Cajiao-Mora and Bullard n. sp. (Diplodiscidae) from the intestine of Peters' thin-toed frog, Leptodactylus petersii (Steindachner) (Anura: Leptodactylidae) from the Yahuarcaca Lake System, Colombia. We assigned our specimens to Catadiscus Cohn, 1904 because they have a smooth-surfaced, pyriform body, centrally-constricted ventro-terminal acetabulum that lacks an accessory sucker, pharynx with extramural sacs, oesophageal bulb, and single testis. The new species differs from all but Catadiscus rodriguezi Caballero, 1955, Catadiscus marinholutzi Freitas and Lent, 1939, and Catadiscus propinquus Freitas and Dobbin, 1956 by having a vitellarium that is confluent anteriorly (vs. two non-confluent fields). It differs from the aforenamed congeners by having a ventral common genital pore that opens anterodextral to the oesophageal bifurcation, round vitelline follicles that become confluent anterior to the testis, and a 1: 2-3 ratio of acetabulum: testis width. Our 28S phylogenetic analysis recovered the new species sister to C. marinholutzi, and Diplodiscidae as paraphyletic, with Catadiscus sister to a clade comprising a sequence ascribed to Chiorchis fabaceus (Diesing, 1838) Fischoeder, 1901 (Cladorchiidae), and sequences of three species of Diplodiscus Diesing, 1836. The species description herein includes several features pertaining to the acetabulum, female genitalia, and excretory system that could comprise useful character states with which to more readily classify and diagnose diplodiscid species and genera. To our knowledge, this is the first record of a digenean infecting Peters' thin-toed frog, and it is also the first record of any parasite infecting any ditch frog (Leptodactylus spp.) from Colombia.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"55"},"PeriodicalIF":1.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12426173/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145034636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Predator's Peril: Chalcidoidean parasitoids (Hymenoptera: Chalcidoidea: Eupelmidae, Torymidae) of mantid ootheca with description of a new genus and four new species from southern India.","authors":"C Binoy, K S Surya, A P Kamila, P M Sureshan","doi":"10.1007/s11230-025-10247-7","DOIUrl":"10.1007/s11230-025-10247-7","url":null,"abstract":"<p><p>Oothecae of three species of praying mantis belonging to genera Humbertiella Saussure, Leptomantella Burmeister and Odontomantis Saussure from Kerala were collected and reared. Parasitisation of eupelmid and torymid (Hymenoptera: Eupelmidae, Torymidae) parasitoids on mantid oothecae with species level identification are reported for the first time from India. Bharatagrion gen. nov. is newly described within Podagrionini (Torymidae) with type species B. keralense sp. nov. attacking oothecae of Leptomantella parva (Werner) (Mantodea, Leptomantellidae) from Kerala. Further three species, Eupelmus gibsoni Binoy & Sureshan sp. nov. (Eupelmidae), Palmon humbertiellophaga Binoy & Sureshan sp. nov., and Podagrion grisselli Binoy & Sureshan sp. nov.: (Torymidae) are described with illustrations. Type images of Palmon orchesticus (Masi), Podagriomicron wayanadense Narendran & Mercy, and Podagrion keralensis Narendran are illustrated for the first time.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"54"},"PeriodicalIF":1.2,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144979134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Description of a new species of Ixodes Latreille, 1795 (Acari: Ixodidae) and notes on I. spinae Arthur, 1958, parasites of the rock hyrax, Procavia capensis (Pallas) (Hyracoidea: Procaviidae) in South Africa.","authors":"Dmitry A Apanaskevich, Carley E Drew, Ronel Pienaar","doi":"10.1007/s11230-025-10248-6","DOIUrl":"10.1007/s11230-025-10248-6","url":null,"abstract":"<p><p>Ixodes (Afrixodes) hyracis n. sp. (Acari: Ixodidae) is described based on females ex the rock hyrax, Procavia capensis (Pallas) (Hyracoidea: Procaviidae) from South Africa. Females of this new species are similar to those of some other Afrotropical species of the subgenus Afrixodes Morel, 1966 such as I. arebiensis Arthur, 1956, I. euplecti Arthur, 1958, I. lunatus Neumann, 1907 and I. rotundatus Arthur, 1958, from which they can be distinguished by the shape of the apron, length of the anterior projection of the basis capituli, length of the auriculae, and length and shape of spurs on palpal segment I, coxae and trochanters.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"53"},"PeriodicalIF":1.2,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144979108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cardimyxobolus iriomotensis n. sp. (Cnidaria: Myxosporea: Ortholineidae) parasitic in gill filaments of Rhinogobius species (Gobiiformes: Gobiidae) in Japan.","authors":"Masato Nitta","doi":"10.1007/s11230-025-10249-5","DOIUrl":"10.1007/s11230-025-10249-5","url":null,"abstract":"<p><p>Cardimyxobolus iriomotensis n. sp. (Cnidaria: Myxosporea: Ortholineidae) is described from the gill filaments of Rhinogobius brunneus (type-host) and R. aonumai aonumai (Gobiiformes: Gobiidae) collected from two rivers on Iriomote-jima Island, located in southern Ryukyus, Okinawa Prefecture, Japan. This new species represents the second record of the genus Cardimyxobolus in Japan and the fourth species of the genus globally. The plasmodium of the new species is spherical, and its spores are ovate, appearing wider than long in valvular view. The shell valves are smooth, and the pair of pyriform polar capsules are subequal in length, occupying the anterior half of the spore body and containing 3-5 coils of the polar tubule. The foramina of each polar capsule are positioned laterally at approximately one-third of the distance from the anterior end of the spore. Cardimyxobolus iriomotensis n. sp. can be distinguished from its congeners by the following key features: 1) a smooth shell valve, in contrast to the 1-6 V-shaped folds found in C. leshanensis; 2) significantly thinner spores (4.4-6.1 μm) compared to C. rhodeus (9.0-10.0 μm); 3) pyriform polar capsules, differing from the spherical capsules in C. leshanensis and C. rhodeus; and 4) narrower spore width (7.5-10.0 μm) and smaller polar capsules (2.6-4.0 μm × 1.4-2.7 μm) than those of C. japonensis (11.3-12.5 μm and 4.2-5.0 μm × 2.9-3.8 μm, respectively). Molecular analysis of 18S rDNA revealed the affinity of the new species for C. japonensis and Triangula percae (Ortholineidae). Cardimyxobolus iriomotensis n. sp. appears to be endemic to the southern Ryukyu region, particularly Iriomote-jima Island, with a geographically restricted distribution, at least in Japan. In addition, this study includes taxonomic notes on the genus Triangula.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"52"},"PeriodicalIF":1.2,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144979098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"More than one: A second eastern Pacific species of Cymothoa (Crustacea: Isopoda) in the SE Gulf of California, Mexico.","authors":"José Salgado-Barragán, Mayra Ixchel Grano-Maldonado","doi":"10.1007/s11230-025-10241-z","DOIUrl":"10.1007/s11230-025-10241-z","url":null,"abstract":"<p><p>A second species of \"tongue-eaters,\" the cymothoid isopod Cymothoa facimar sp. nov., is described from the coasts of Sinaloa on the Mexican Pacific coast. Twenty-seven females and five males of the new species were collected from the oral cavity of the snappers Lutjanus peru and L. aratus caught for sale in Mazatlán fish markets. The new species is morphologically similar to C. exigua, the previously known species reported from the Eastern Pacific, in general shape of body, cephalon, the anterior pereonites, pereopods and pleotelson; however, they can be easily differentiated because adult females of the new species are larger and slender than those of C. exigua and because they show differences in the dorsal surface of pereonites, the shape of the seventh pereonite and cephalon and the relative size of exopodite and endopodite of the uropods. The new species is morphologically similar to C. exigua, the only species of Cymothoa described so far from the Eastern Pacific, particularly in the general shape of the body, cephalon, anterior pereonites, pereopods, and pleotelson. Nonetheless, it can be readily distinguished from C. exigua by several diagnostic features: adult females attain larger body sizes and exhibit a slenderer morphology especially in the ovigerous females; additionally, differences are present in the dorsal sculpturing of the pereonites, the shape of the sixth and seventh pereonites, and the relative proportions of the exopodite and endopodite of the uropods. Cymothoa facimar sp. nov. resembles C. excisa, a species reported from the western Atlantic. Still, the two species can be differentiated by the relative length of the fourth pereonite, which is more prominent in the Atlantic species. The new species is described herein, and a discussion on the status of C. exigua is presented in reports from other regions of the Eastern Pacific.Zoobank registration: http://zoobank.org/urn:lsid:zoobank.org:pub:E5B44B8C-DFD2-423A-A554-62A2D4FB464F       http://zoobank.org/urn:lsid:zoobank.org:act:D3FADC01-5267-4DE4-AB15-A98C01F1B876.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"51"},"PeriodicalIF":1.2,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144838550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular characterisation of Iotonchulus longicaudatus (Nematoda: Mononchida) from Mizoram, India.","authors":"Samandram Sushilkumar Singh, Phougeishangbam Rolish Singh, Sorokhaibam Mexico Singh, Naorem Mohilal Meitei","doi":"10.1007/s11230-025-10246-8","DOIUrl":"10.1007/s11230-025-10246-8","url":null,"abstract":"<p><p>A nematode diversity survey in Mizoram, India led to the recovery of a known species of the order Mononchida (Animalia: Nematoda). Upon investigation, the species was identified as Iotonchulus longicaudatus (Mononchida: Iotonchidae) based on morphology and morphometrics. Iotonchulus longicaudatus can be characterized by its robust body, tubular buccal cavity with dorsal tooth positioned at midway of buccal length, non-denticulate subventral buccal wall, tuberculated pharyngo-intestinal junction, mono-prodelphic female genital system, filiform tail with well-developed caudal glands and spinneret. Molecular data including the 18S and D2-D3 expansion segment of 28S rDNA sequences were generated for the first time for this species and were further utilized to determine its phylogenetic relationship with other mononchs.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"50"},"PeriodicalIF":1.2,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identity of Ixodes ugandanus Neumann, 1906 (Acari: Ixodidae), reinstatement of I. ampullaceus Warburton, 1933 as a valid species and redescription of I. aulacodi Arthur, 1956, parasites of rodents and other animals in sub-Saharan Africa.","authors":"Dmitry A Apanaskevich, Elizabeth M McCooey, Stephen E Greiman, Maria A Apanaskevich, Rokeya Ahmed, Roland E Yessinou, Dikeledi Matloa, Lidia Chitimia-Dobler, Ben J Mans, Ivan G Horak","doi":"10.1007/s11230-025-10242-y","DOIUrl":"10.1007/s11230-025-10242-y","url":null,"abstract":"<p><p>The identity of Ixodes (Afrixodes) ugandanus Neumann, 1906 (Acari: Ixodidae) is established and its male and female are redescribed based on specimens collected on rodents (Rodentia: Muridae, Thryonomyidae) in Ethiopia and Uganda. Lectotype of I. ugandanus is designated here. Ixodes (Afrixodes) ampullaceus Warburton, 1933 is reestablished as a valid species and its female is redescribed based on specimens collected on rodents (Rodentia: Thryonomyidae), carnivorans (Carnivora: Viverridae) and a bird (Galliformes: Numididae) in Kenya, Malawi, Mozambique, South Africa, Tanzania, and Zimbabwe. Ixodes mossambicensis Santos Dias, 1952 is synonymized with I. ampullaceus. Male and female of Ixodes (Afrixodes) aulacodi Arthur, 1956 are redescribed in greater detail based on specimens collected on rodents (Rodentia: Thryonomyidae) in Benin, Cameroon, and Ivory Coast. All available literature data on these taxa are critically analyzed and discussed. We sequenced the mitochondrial genome of I. aulacodi, compared it to other Ixodes Latreille, 1795 species, and according to our phylogeny from 10 protein-coding mitochondrial genes of 33 Ixodes species, I. aulacodi forms a clade with the only other Afrixodes Morel, 1966 having a sequenced complete mitochondrial genome, Ixodes rubicundus Neumann, 1904.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"49"},"PeriodicalIF":1.2,"publicationDate":"2025-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144769355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A taxonomic assessment of Subulura (Murisubulura) andersoni (Cobbold, 1876) (Nematoda: Subuluridae) from murid and sciurid rodents.","authors":"Lesley R Smales, Leslie A Chisholm","doi":"10.1007/s11230-025-10237-9","DOIUrl":"10.1007/s11230-025-10237-9","url":null,"abstract":"<p><p>Subulura (Murisubulura) andersoni (Cobbold, 1876) is one of 20 species of the genus Subulura known from mammals and one of four species known from murid rodents across South Africa, India, southeast Asia, Japan, New Guinea and Australia. On re-evaluation of all the relevant literature and examination of specimens of S. (M.) andersoni and S. (M.) ortleppi Inglis, 1960, the following taxonomic decisions were made. Subulura (M.) ortleppi, S. (M.) sipirocki Purwanginsih, 2003 and S. (M.) suzukii Yagi & Kamiya, 1981 were placed as synonyms of S. (M.) andersoni based on morphological and morphometric evidence. Subulura hindi Mirza, 1936 was confirmed as a valid species and Latibuccana funambulenis Patwardhan, 1935 declared a species inquirendum. The type locality of S. (M.) andersoni was confirmed as northern India not Sri Lanka (Ceylon). Prevalence and locality data suggested that the focus of infection of S. (M.) andersoni was in the murine Bunomys chrysocomus (Hoffman) from Sulawesi, Indonesia with the geographic range extending to South Africa in the west and Australia in the east.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"48"},"PeriodicalIF":1.2,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144735510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phylogenetic insights into Annulotrematoides (Kritsky & Boeger, 1995) and Urocleidoides (Mizelle & Price, 1964) (Monopisthocotyla: Dactylogyridae) species parasitizing Cyphocharax modestus (Fernández-Yépez) (Characiformes: Curimatidae) from southeastern Brazil.","authors":"Melissa Miyuki Osaki-Pereira, Priscilla de Oliveira Fadel Yamada, Mariana Bertholdi Ebert, Reinaldo José da Silva","doi":"10.1007/s11230-025-10239-7","DOIUrl":"10.1007/s11230-025-10239-7","url":null,"abstract":"<p><p>The integration of molecular data with morphological analysis has greatly advanced the understanding of parasitic diversity, particularly within groups like Dactylogyridae. While morphological features have long been used to classify genera and species, molecular studies have often revealed discrepancies that challenge traditional taxonomies. Urocleidoides (Mizelle & Price, 1964) is one such example, with previous research suggesting it may not be monophyletic. Meanwhile, Annulotrematoides (Kritsky & Boeger, 1995) has lacked any molecular data until now, limiting our understanding of its evolutionary relationships. In this study, we provide the first molecular sequences for Annulotrematoides, which were grouped with Urocleidoides spp. Our analysis of Annulotrematoides bonaerensis Rossin & Timi, 2016 and Urocleidoides surianoae Rossin & Timi, 2016 found parasitizing the gills of Cyphocharax modestus (Fernández-Yépez) revealed a strong phylogenetic relationship between these two species, despite their classification in different genera. This discovery challenges the current morphological-based taxonomy of Urocleidoides and suggests that U. surianoae may not be accurately placed within its genus. The clustering of Urocleidoides with Annulotrematoides for the first time highlights the need for a taxonomic re-evaluation of these groups. Additionally, this work underscores the importance of molecular data in resolving evolutionary relationships and advancing our understanding of parasitic diversity.</p>","PeriodicalId":54436,"journal":{"name":"Systematic Parasitology","volume":"102 5","pages":"47"},"PeriodicalIF":1.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144692472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}