Neotropical Cyphoderus (Collembola: Paronellidae), with Comments About Myrmecophily and the Description of New Species.

In this contribution, supplementary descriptions of Cyphoderus innominatus Mills, 1938 and C. limboxiphius nitricola Rapoport & Izarra, 1962 are provided; and three new species are described: C. adversus sp. nov., C. amazonicus sp. nov., and C. parafolsomi sp. nov.; chaetotaxy for all of them is included. The new species have a labial triangular field with a1-5, m, e, l1 smooth chaetae, and l2 as reduced spine, but C. adversus sp. nov. is characterized by a trochateral organ with at least 9 spine-like chaetae; tenent hair capitate; colophore chaeta D mic, lateral flap chaetae with uneven length; dens with De1-De6/Di1-Di6 feathered chaetae; mucro only with a, while C. amazonicus sp. nov. is differentiated by a trochateral organ with at least 16 spine-like chaetae; tenent hair acuminate; colophore chaeta D mac, lateral flap chaetae small and subequal; dens with De1-De6/Di1-Di5 feathered chaetae; mucro with aA. Cyphoderus parafolsomi sp. nov. has trochateral organ with more than 14 spine-like chaetae; unguis with 1 unpaired internal tooth; tenent hair capitate; dens with De1-De6/Di1-Di5 feathered chaetae; mucro with aA. A key for identification of the Neotropical species is provided. Also, the paper describes the information about the association of Cyphoderus with different ant species, and a new taxonomic status for C. nitricola (Rapoport & Izarra, 1962) comb. nov.

An updated checklist of Collembola in Taiwan, with DNA barcoding of Papirioidesjacobsoni Folsom, 1924 (Symphypleona, Dicyrtomidae).

From urban green space to pristine forest, Collembola is one of the most numerous and species-rich members of the soil fauna around the world. However, due to lack of taxonomic expertise and research, its diversity is poorly understood, especially in tropical and subtropical regions. Collembola biodiversity studies in Taiwan have not seen much progress since 1981, when Hsin Chi reviewed 26 species belonging to 20 genera and eight families. Additionally, reports of new records in Taiwan in the last 40 years are scattered amongst several publications and not easily accessible to most end-users. Thus, a concise summary of related research is urgently needed. In this study, we updated the checklist of Collembola in Taiwan, based on published papers as well as images recorded in 2020-2022. We concluded that 58 species of Collembola belonging to 31 genera and 12 families have been reported in Taiwan, including 13 newly-recorded species. This species richness marks a 123% increase from the 1981 review. The results have been made publicly available in the Catalog of Life in Taiwan database and the images recorded have been used to update species information in collembola.org. We also characterised morphological and genetic variations in the globular springtail species Papirioidesjacobsoni Folsom, 1924 using DNA barcodes and highlighted potential research directions.

Complete mitochondrial genome of the Korean endemic springtail Homidia koreana Lee & Lee, 1981 (Collembola: Entomobryidae).

The Korean endemic springtail Homidia koreana Lee & Lee, 1981 is popular in the leaf litter of various forests of South Korea, probably widely distributed throughout the Korean Peninsula. The complete mitochondrial genome of H. koreana was sequenced, assembled, and annotated. The mitochondrial genome of H. koreana consists of a circular DNA molecule of 14,846 bp, with 68.4% AT content. It comprises 13 protein-coding genes (PCGs), 22 transfer (tRNA) genes, and 2 ribosomal RNA (rRNA) genes. The molecular phylogenetic relationships estimated using MrBayes 3.2 revealed that H. koreana was closely related to Homidia socia Denis, 1929, both of which belong to the genus Homidia.

The Puzzling Falcomurus Mandal (Collembola, Orchesellidae, Heteromurinae): A Review.

Falcomurus Mandal is currently a monotypic genus of Heteromurinae described from India in 2018. Its key characters are the first antennal segment subdivided, the second undivided and the third annulated; the first abdominal segment lacking macrochaetae; and the presence of a sinuous modified macrochaeta on the proximal dens. Some details of its morphology were recently put in doubt, and so its genus status and affinities remain uncertain. Here, we revise the genus based on the type material of Dicranocentrus litoreus Mari-Mutt, as well as provide the description of two new species from Australian archipelagos and a reinterpretation of the chaetotaxy of Falcomurus chilikaensis Mandal and D. halophilus Mari-Mutt. After our revision, Falcomurus shows a well-conserved chaetotaxy and overall morphology, which allowed us to provide an updated generic diagnosis. While the antennae morphology of Falcomurus resembles that of Dicranocentrus Schött, its dorsal sensillar and macrochaetotaxy suggest it is closely related to Heteromurus Wankel, as originally stated by Mandal. The main features useful to separate Falcomurus species are the head, mesothorax and fourth abdominal segment chaetotaxy. We also provide a key to its five species, a comparative table and notes on the affinities and distribution of Falcomurus.

Two New Cyphoderus Nicolet (Collembola: Paronellidae) of the "bidenticulati-group" with Dental Plurichaetosis from Brazil.

Two new species of Cyphoderus are described; full body chaetotaxy is given. Cyphoderus pataxo sp. nov. and Cyphoderus palaciosi sp. nov. were originally found in metalogenic areas covered with transitional vegetation of savanna and subtropical forest from Minas Gerais, Southeastern Brazil. Both new species are part of the "bidenticulati-group," with mucronal formula 'Aa' and show remarkable plurichaetosis on posterior manubrium and dens.

Two new species of Collembola (Arthropoda: Hexapoda) from Minas Gerais, Brazil.

Two new species of Collembola are described, full body chaetotaxy is given. Ptenothrix dalii sp. nov. and Seira pietata sp. nov. were originally found in metalogenic areas covered with transitional vegetation of savanna and forest in Minas Gerais, Southeastern Brazil. Ptenothrix dalii sp. nov. is part of the "gracilis-group" of species, with large, blunt macrochaetae on head and body. Seira pietata sp. nov. is part of the "andensis-group" of species, lacking macrochaeta on abdominal segment I.

A new species of Seira Lubbock (Collembola, Entomobryidae), with a key to the species of Paraíba, Brazil / Uma nova espécie de Seira Lubbock (Collembola, Entomobryidae), com chave para as espécies da Paraíba, Brasil

A new species of Entomobryidae of the genus Seira Lubbock, S. paraibensis sp. nov. is described and illustrated. The type locality of the species is the municipality of Areia, state of Paraíba, Brazil. The species was found inhabiting the Atlantic forest litter and top soil environment. S. paraibensis sp. nov. resembles S. pseudoannulata in many morphological features. This is the sixth species of the genus found and described in Paraiba so far. A key with the 11 species of Seira registered so far in Paraíba is provided. Also a list with all species of the genus from Brazil is presented.

Uma nova espécie de Entomobryidae do gênero Seira, S. paraibensis sp. nov. é descrita e ilustrada. A localidade tipo da espécie é o município de Areia, no Estado da Paraíba, Brasil. A espécie foi encontrada habitando o folhiço e solo superficial de um remanescente de Mata Atlântica. S. paraibensis sp nov. possui muitas similaridades em sua morfologia com S. pseudoannulata. Esta é a sexta espécie do gênero encontrada e descrita na Paraíba até o momento. Uma chave com as 11 espécies de Seira registradas até o momento na Paraíba é apresentada, juntamente com uma lista com todas as espécies do gênero encontradas no Brasil.