A synthesis of the current knowledge on the Australian Orchesellidae (Collembola, Entomobryoidea)
- Authors: Bellini, Bruno , Greenslade, Penelope , Baquero, Enrique , Jordana, Rafael , De Souza, Paolla
- Date: 2022
- Type: Text , Journal article
- Relation: Zootaxa Vol. 5115, no. 2 (2022), p. 221-257
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- Description: The Australian Orchesellidae includes only 11 nominal species in four genera: Australotomurus Stach, 1947, Alloscopus Börner, 1906, Heteromurus Wankel, 1860, and Falcomurus Mandal, 2018. Here we describe Dicranocentrus dolosus sp. nov. from Cocos and Keeling Islands, the first species of the genus to be recorded from Australia. The new species is similar to D. inermodentes (Uchida, 1944) and D. indicus Bonet, 1930, but differs from both by the combination of the ventral head, mesothoracic and dental chaetotaxy. We also revisit Australotomurus based on previous studies to better interpret the dorsal macrochaetotaxy of the genus, and provide a synthetic map of chaetae to guide future studies on scaleless Orchesellidae. Finally, we present updated diagnoses to all genera and species of Australian Orchesellidae, as well as an identification key to all species. © 2022 Magnolia Press.
The puzzling falcomurus mandal (Collembola, orchesellidae, heteromurinae) : a review
- Authors: Bellini, Bruno , De Souza, Paolla , Greenslade, Penelope
- Date: 2021
- Type: Text , Journal article
- Relation: Insects Vol. 12, no. 7 (2021), p.
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- Description: 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 HeteromurusWankel, 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. © 2021 by the authors.
The rare richardsitas betsch (collembola, symphypleona, sminthuridae) : a new species from Australia with comments on the genus and on the sminthurinae
- Authors: Medeiros, Gleyce , Greenslade, Penelope , Bellini, Bruno
- Date: 2020
- Type: Text , Journal article
- Relation: Insects Vol. 11, no. 8 (2020), p. 1-16
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- Description: Richardsitas Betsch is a small genus of Sminthurinae with only two species described so far, both from Madagascar. It resembles other Sminthurinae with long antennae, especially Temeritas Richards. Here we provide the first record of Richardsitas from Australia, Richardsitas subferoleum sp. nov., which is similar to R. najtae Betsch and R. griveaudi Betsch in males’ large abdomen chaetotaxy and presence of tenent-hairs on tibiotarsi II–III, but lacks mucronal chaeta and has 28 segments on the fourth antennal segment plus a unique pair of sensilla on the second. We also provide an updated genus diagnosis to Richardsitas, a key to its species, a discussion of the affinities of Temeritas and Richardsitas to other Sminthurinae, and an updated key to this subfamily. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
- Description: This research was supported by UFRN. B.C.B. was granted by CAPES and CNPq (PROTAX II, process #156828/2016-01 and PQ2018, process # 305426/2018-4, respectively); G.S.M. was granted by CAPES (Master scholarship).
Four new species of plumachaetas salmon (collembola : entomobryoidea) from oceania with comments on the genus and a key to species
- Authors: Oliveira, Fabio , Greenslade, Penelope , Bellini, Bruno
- Date: 2019
- Type: Text , Journal article
- Relation: Zootaxa Vol. 4706, no. 1 (Dec 2019), p. 121-146
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- Description: Plumachaetas Salmon is a genus of Entomobryoidea with 11 valid species, all from Oceania. The genus is characterised by the presence of lanceolate scales, the subapical chaeta of the maxillary outer lobe thick and blunt, dental spines absent and a short mucro. In this paper we describe four new species of Plumachaetas from Oceania: P. belae sp. nov., P. loriensis sp. nov., P. mamuensis sp. nov. and P. wanangensis sp. nov. Plumachaetas belae sp. nov. and P. mamuensis sp. nov. are similar to each other, and to P. queenslandica (Schott) and P. yoshii Zhang & Deharveng, but are unique in the combination of dorsal and labial chaetotaxy. Plumachaetas loriensis sp. nov. resembles P. halmaherae (Yoshii & Suhardjono) and P. sunae Zhang & Deharveng but differs in labial, dorsal chaetotaxy and unguiculus shape. Plumachaetas wanangensis sp. nov. is similar to other taxa bearing a mucro with four teeth, but presents a unique combination of macrochaetae on thoracic and abdominal segments. All species are arboreal and were collected in Malaise traps set in humid rainforests. A map of the geographic distribution and ecological remarks on the genus are provided and a key to species with a table summarising the main morphological features of all described taxa in the genus.