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Nouveautés dans le genre <i>Psiadia</i> Jacq. ex Willd. (Compositae) de Madagascar et des Comores
No full textMadagascar et les autres îles de l’océan Indien occidental sont le principal centre de diversité d’espèces du genre Psiadia Jacq. ex Willd (Compositae, Astereae). En révisant le matériel conservé dans les herbiers historiques P-JU et P-LA, nous avons réalisé que le nom P. madagascariensis (Lam.) DC, basé sur le nom de Lamarck Conyza madagascariensis Lam., a été mal interprété et doit être le nom prioritaire pour Psiadia altissima (DC.) Benth. & Hook.f. ex B.D. Jacks, qui est largement utilisé. Pour éviter d’autres erreurs d’interprétation, les types des noms Conyza glutinosa Lam. [accepté comme Psiadia glutinosa (Lam.) Willd.] et Glyphia lucida Cass. [accepté comme Psiadia lucida (Cass.) Drake] sont discutés et clarifiés. Dans ce cadre, des lectotypes sont désignés pour six noms. De plus, l’espèce P. lucida est signalée pour la première fois aux Comores (Grande Comore). Enfin, une nouvelle espèce disciforme de Psiadia de Madagascar, Psiadia salicifolia J. Calvo & Callm., sp. nov., est décrite et illustrée.Madagascar and the other islands of the western Indian Ocean are the foremost center of species diversity of the genus Psiadia Jacq. ex Willd. (Compositae, Astereae). Revising the material housed in the historical herbaria P-JU and P-LA, we realized that the name P. madagascariensis (Lam.) DC., based on Lamarck’s name Conyza madagascariensis Lam., was misinterpreted and should be the priority name for the widely used Psiadia altissima (DC.) Benth. & Hook.f. ex B.D. Jacks. To avoid further misinterpretation, the types of the names Conyza glutinosa Lam. [accepted as Psiadia glutinosa (Lam.) Willd.] and Glyphia lucida Cass. [accepted as Psiadia lucida (Cass.) Drake] are discussed and clarified. In this frame, lectotypes are designated for six names. Moreover, the species P. lucida is recorded for the first time in the Comoros (Grande Comore). Finally, a new disciform species of Psiadia from Madagascar, i.e., Psiadia salicifolia J. Calvo & Callm., sp. nov., is described and illustrated.</p
Novel additions to the jumping spider subfamily Spartaeinae Wanless, 1984 from India (Araneae, Salticidae, Spartaeini)
No full textA new spartaeine species, Spartaeus karigiri Caleb, Sudhin, Sen & Kadam sp. nov. is described from India. The genera Sonoita G.W. Peckham & E.G. Peckham, 1903 and Spartaeus Thorell, 1891 are reported for the first time from India. Marpissa gangasagarensis Majumder, 2005 syn. nov. is recognized as a junior synonym of Phaeacius fimbriatus Simon, 1900. Additionally, distributional data is provided for Brettus anchorum Wanless, 1979, Portia albimana (Simon, 1900) and Portia labiata (Thorell, 1887). Detailed morphological descriptions, illustrations, and distributional maps are also provided.</p
The Sertão Leaf Katydid – a new genus of Pterochrozinae Walker, 1870 (Insecta, Orthoptera) from the Caatinga in Northeastern Brazil
No full textPterochrozinae are katydids endemic to the Neotropics, commonly known as peacock or leaf katydids. Several areas in the Neotropical are poorly sampled for leaf katydids, and there are few experts working with this group. Most of Pterochrozinae diversity occurs in rainforests, while only a single genus occurs in the savannic Cerrado, and no Pterochrozinae is known for the Caatinga, a semi-arid biome. Here, we present a new Pterochrozinae genus and species, Metallacantha aculeata Engelking, Ghirotto, Fianco, Sobral, Silva-Neto & Mendes gen. and sp. nov., from the Caatinga. The new genus can be distinguished from all other Pterochrozinae by its robust body, enlarged legs, large and flat hind tibial spines, and extremely shortened hind wings. We describe the new genus and species based on three adult females, three adult males, and one nymph from different areas in the Southern Sertanejo Depression of the Caatinga biome, Brazil, also presenting notes on its biology, acoustics, and behavior. Furthermore, we present discussions on the relationship of some Pterochrozinae genera.</p
The species of <i>Centistidea</i> Rohwer, 1914 (Hymenoptera: Braconidae: Miracinae) from Brazil
No full textFour new species of the subfamily Miracinae (Hymenoptera: Braconidae) are described from Brazil based on specimens in the Natural History Museum, UK: Centistidea areolaris sp. nov., C. breviantennalis sp. nov., C. radialis sp. nov., and C. latisulca sp. nov. New distribution records of C. insularis (Muesebeck, 1937) and C. vertus (Papp, 2013) from the Neotropical region are provided, together with an illustrated key to all species of Centistidea known in Brazil.</p
Two new species in the genus <i>Atractides</i> Koch, 1837 (Acari: Hydrachnidiae: Hygrobatidae), with the first descriptions of the female of two species from China
No full textIn this paper, two new species of Acari are described, i.e., Atractides (Atractides) cardiacus Zhang & Guo sp. nov. and Atractides (Atractides) fodingensis Zhang & Guo sp. nov. Moreover, the females of Atractides (Atractides) bitergumus Zhang & Guo, 2023 and Atractides (Tympanomegapus) tergumus Zhang & Guo, 2023 from Hainan Province and Guizhou Province of Oriental Region in China are described and illustrated for the first time.</p
Nouvelles espèces et nouvelles signalisations de mouches mineuses (Diptera, Agromyzidae) de la forêt tropicale et de l’inselberg de Mitaraka (Guyane)
No full textLa faune des Agromyzidae Fallén, 1823 de Guyane n’a jamais été étudiée auparavant et seules cinq espèces bien connues et économiquement importantes ont été signalées dans cette région. Une expédition récente au massif du Mitaraka, une région largement inexplorée de la Guyane, a abouti à une diversité remarquable d’Agromyzidae. Cette étude fournit les premiers résultats du traitement taxonomique de ces Agromyzidae avec la description de huit nouvelles espèces : Agromyza mitarakensis Boucher, n. sp., Calycomyza inselbergensis Boucher, n. sp., Cerodontha pseudonigrihalterata Boucher, n. sp., Liriomyza touroulti Boucher, n. sp., Nemorimyza thanatos Boucher, n. sp., Phytobia corona Boucher, n. sp., Phytobia dalensi Boucher, n. sp., Phytobia pluviasilvae Boucher, n. sp. et la première signalisation de deux espèces néotropicales précédemment inconnues en Guyane : Calycomyza grenadensis Zlobin, 1996 et Phytoliriomyza jurgensi Spencer, 1983. Des diagnostics et des notes systématiques sont fournis pour chaque espèce ainsi que des photographies des habitus et des genitalia mâles. La faune des Agromyzidae de Guyane compte aujourd’hui 15 espèces décrites.The Agromyzidae Fallén, 1823 fauna of French Guiana has never been previously studied and only five well known and economically important species had been reported from this region. A recent expedition to the Mitaraka massif, a largely unexplored region of French Guiana, has resulted in a remarkable diversity of Agromyzidae. This study provides the first results of the taxonomic treatment of these agromyzids with the description of eight new species: Agromyza mitarakensis Boucher, n. sp., Calycomyza inselbergensis Boucher, n. sp., Cerodontha pseudonigrihalterata Boucher, n. sp., Liriomyza touroulti Boucher, n. sp., Nemorimyza thanatos Boucher, n. sp., Phytobia corona Boucher, n. sp., Phytobia dalensi Boucher, n. sp., Phytobia pluviasilvae Boucher, n. sp., and the first record of two Neotropical species previously unreported from French Guiana: Calycomyza grenadensis Zlobin, 1996 and Phytoliriomyza jurgensi Spencer, 1983. Diagnoses and systematic notes are provided for each species together with photographs of habitus and male genitalia. The agromyzid fauna of French Guiana now includes 15 described species.</p
<i>Caerostris</i> (Araneidae: Araneae) cryptic diversity highlights the need for taxonomic expertise in the genomic era
No full textBark spiders (Caerostris Thorell, 1868, Araneidae Clerck, 1757) are large spiders distributed across the Old-World tropics. This genus was understudied until recently, but received more attention following the discovery of unique web evolution and biomaterial properties of its species. Caerostris are characterized by web gigantism, reaching extremes in Darwin’s Bark spider (C. darwini Kuntner & Agnarsson, 2010), which employs the toughest known silk. Due to the exceptional silk of C. darwini, recent research provided whole-genome sequencing and silk-gene mapping for C. darwini and a sympatric congener misassigned, due to cryptic diversity, to C. extrusa Butler, 1882. We describe a case of convergent evolution in somatic morphology that further hinders species identification in the field. Conducting a morphological and molecular investigation of exemplars that share the “C. extrusa morphotype”, we conclude they belong to four distinct species. We redescribe the two valid ones, C. extrusa and C. hirsuta (Simon, 1895), elevate the previously synonymized C. bankana Strand, 1915 to species level, and newly describe C. kuntneri sp. nov., the species used in the assembly of its genome. We argue this to be an example of how the global taxonomic impediment can lead to errors in rapidly advancing fields such as genomics.</p
New species and new records of the genus <i>Thubana</i> Walker (Lepidoptera: Lecithoceridae) from China, with a checklist of the genus in the country - Corrigendum
No full textThe present corrigendum rectifies an inadvertent error in Yu & Wang (2025).</p
Nouvelles données sur le plus ancien embrithopode arsinoitheriidé (Mammalia, Paenungulata), <i>Namatherium </i>Pickford, Senut, Morales, Mein & Sanchez, 2008 de l’Éocène moyen de Namibie
No full textNous rapportons la récente découverte d’un nouveau matériel du mammifère embrithopode Namatherium blackcrowense Pickford, Senut, Morales, Mein & Sanchez, 2008 de la localité lutétienne de Black Crow, en Namibie, une espèce auparavant seulement connue par l’holotype. Le nouveau spécimen, correspondant à la partie postérieure d’un crâne avec les deux pétreux, complète bien l’holotype et permet la reconstitution virtuelle d’une grande partie du crâne de N. blackcrowense. L’étude CT scan du pétreux et du labyrinthe osseux, de même que la morphologie du squamosal, appuient sans ambiguïté l’appartenance du nouveau spécimen à N. blackcrowense. Nos comparaisons et notre étude phylogénétique confirment la proche parenté de Namatherium Pickford, Senut, Morales, Mein & Sanchez, 2008 avec le genre plus dérivé du Fayoum, Arsinoitherium Beadnell, 1902, et son appartenance à la famille des Arsinoitheriidae. Cela est soutenu par plusieurs caractères dérivés communs remarquables du pétreux et de l’oreille osseuse interne tels que les canaux semi-circulaires épais et aplatis, la fossa subarcuata absente, la lamine osseuse secondaire réduite, la crus commune secondaire en cours de séparation, et la fenestra cochleae et l’aqueduc cochléaire partiellement fusionnés. Ceux-ci s’ajoutent aux synapomorphies d’arsinoithériidés auparavant identifiées sur l’holotype de Namatherium, telles que la présence de cornes nasales et de molaires pseudolophodontes. Namatherium permet de reconstruire le morphotype ancestral de la famille des Arsinoitheriidae, et souligne la condition dérivée d’Arsinoitherium zitteli Beadnell, 1902 par rapport à Namatherium dans de nombreux caractères autapomorphiques, dont plusieurs reversions crâniennes remarquables. Cela implique une grande divergence évolutive de la lignée d’Arsinoitherium entre le Lutétien et le Priabonien qui reste inconnue et mal comprise sur le plan adaptatif.We here describe and interpret recently discovered material of the embrithopod mammal Namatherium blackcrowense Pickford, Senut, Morales, Mein & Sanchez, 2008 from the Lutetian Black Crow locality, in Namibia, a species previously only known from the holotype. The new specimen, a distal part of a skull including the petrosals, complements the holotype well and allows a virtual reconstruction of a large part of the skull of N. blackcrowense. The CT scan study of the petrosal and labyrinth and the squamosal morphology unambiguously support referral of the new specimen to N. blackcrowense. Our comparisons and phylogenetic study support a close relationship between Namatherium Pickford, Senut, Morales, Mein & Sanchez, 2008 and the more derived Fayum genus Arsinoitherium Beadnell, 1902, and its inclusion within the family Arsinoitheriidae. This is evidenced by remarkable shared derived traits of the petrosal and inner ear such as the thick and flattened semicircular canals, the absent fossa subarcuata, the reduced secondary bony lamina, the secondary crus commune in the course of separation, and the partially fused fenestra cochleae and cochlear aqueduct. They add to previous arsinoitheriid synapomorphies reported on the holotype such as presence of nasal horns and the pseudolophodont molars. Namatherium helps to reconstruct the ancestral morphotype of the family Arsinoitheriidae, and it emphasises the advanced condition of Arsinoitherium zitteli Beadnell, 1902 with respect to Namatherium in many autapomorphic traits, especially in striking reversals in some cranial morphological traits. This implies a substantial divergent evolution of the Arsinoitherium clade between the Lutetian and Priabonian, which remains undocumented and poorly understood from an adaptive perspective.</p
Revision of the Australian <i>Ozestheria</i> Schwentner & Richter, 2015 (Crustacea: Branchiopoda: Spinicaudata) fauna, with the descriptions of 27 new species
No full textWe provide an extensive and comprehensive revision of the Australian species of the genus Ozestheria based on an integrative taxonomic approach. In this integrative approach, molecular genetic analyses (COI, 16S and ITS-2) were combined with geometric morphometric analyses of carapace shape, ornamental features and traditional taxonomic assessments including head, thoracopod, telsonic and furcal features as well as carapace length. Initial species delimitation was based on genetic data. Morphometric differences in their carapace shape were then examined and overall morphological differences assessed. The genetic data yielded a high number of previously unknown and morphologically highly similar species. Deciding which of these correspond to the currently known and accepted species or to one of the previously synonymized species or varieties was challenging. Historic type specimens were thus assigned to the respective genetically delimited species with the aid of carapace shape variables as predictors of species identity. The taxonomic descriptions of all known and accepted species are updated based on the original type material (if available). Ozestheria dictyon is treated as a junior synonym of O. lutraria (the original description of O. dictyon was based on juveniles of O. lutraria), O. packardi is treated as a species inquirenda (the original description is inadequate and the types are lost), O. rufa is treated as a valid species (formerly treated as species inquirenda) and three former varieties of O. packardi are raised to full species status: O. cancellata comb. nov., O. minor comb. nov. and O. typica comb. nov. Furthermore, 27 species of Ozestheria new to science are formally described: O. barcaldinensis sp. nov., O. beleriandensis sp. nov., O. bourkensis sp. nov., O. carnegiensis sp. nov., O. christiani sp. nov., O. echidna sp. nov., O. frederikeae sp. nov., O. fuersichi sp. nov., O. gemina sp. nov., O. glabra sp. nov., O. henryae sp. nov., O. jiangi sp. nov., O. jonnae sp. nov., O. marthae sp. nov., O. matuwa sp. nov., O. ngamurru sp. nov., O. paralutraria sp. nov., O. pilbarensis sp. nov., O. quinlanae sp. nov., O. radiata sp. nov., O. richteri sp. nov., O. rincewindi sp. nov., O. selmae sp. nov., O. setifera sp. nov., O. sivesae sp. nov., O. timmsi sp. nov. and O. weeksi sp. nov. With now 38 Australian species of Ozestheria, our results further underline the exceptional diversity of the Australian spinicaudatan fauna, raising the total number of recognized spinicaudatan species to 97, nearly half of their worldwide known species diversity.</p