A new species of the genus Crossodonthina (Collembola: Neanuridae: Neanurinae: Lobellini) from Yonaguni-jima in southwest Japan

KASAI, HIRO; TANAKA, SHINGO; Sawahata, Takuo

doi:10.11646/zootaxa.5277.3.4

Zootaxa

2023

DOI: 10.11646/zootaxa.5277.3.4

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A new species of the genus Crossodonthina (Collembola: Neanuridae: Neanurinae: Lobellini) from Yonaguni-jima in southwest Japan

HIRO KASAI

SHINGO TANAKA

Takuo Sawahata

Abstract: We describe a new species of Collembola, Crossodonthina elegans sp. nov., collected from Yonaguni-jima, southwest Japan. This new species differs from other known congeners because it has an unusual white or yellow color pattern on Ant. I and Th. I. It is similar to C. laterisensillata Ohira, Kataoka, Tanooka & Nakamori, 2022, in the structure of mouthparts, 3 + 3 eyes, cephalic chaeta O present, and tubercles De and Dl separated on Abd. V. However, it is easily distinguished from the latter species to max… Show more

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2024

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Cited by 2 publications

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Species groups of Crossodonthina Yosii (Collembola: Neanuridae), with the description of a new species and a new record for C. bidentata Luo & Chen

JIANG,

WANG

2024

Zootaxa

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A new two-eyed species of the genus Crossodonthina Yosii (Collembola: Neanuridae) is recorded and described from the Nanling National Forest Park, Ruyuan Yao Autonomous County, Guangdong Province, China. Crossodonthina quadridentata sp. nov. is characterized by 2+2 eyes, labral chaetotaxy formula as 4/4, 2, cephalic chaeta O present, cephalic tubercles Dl, L and So fused together, mandible with 4 basal teeth and 5 fringed rami, and maxilla with two lamellae, the outer lamella apically bifurcated, the inner lamella ciliated. Crossodonthina bidentata Luo & Chen is also recorded for the first time in the Mount Wuyi National Nature Reserve, Fujian Province. The genus Crossodonthina is herein tentatively divided into two species groups. The main differences between the montana and the nipponica groups are listed and discussed, and the importance of the number of eyes in the classification of Neanuridae is stressed.

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Species groups of Crossodonthina Yosii (Collembola: Neanuridae), with the description of a new species and a new record for C. bidentata Luo & Chen

JIANG,

WANG

2024

Zootaxa

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Two new Neanurid Collembola, Paranura and Yuukianura (Neanuridae: Neanurinae) from Japan, with a checklist of species and key to the Japanese genera of Neanurinae

KASAI,

OHGITA,

OSAKI

et al. 2024

Zootaxa

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We describe and illustrate two new species of Neanurinae, Paranura ezoensis sp. nov. and Yuukianura kikaiensis sp. nov., collected from Hokkaido and Kikai Island, southwest Japan, respectively. The general morphology of P. ezoensis sp. nov. resembles P. conjuncta Smolis & Deharveng, 2015, however, it differs by its 12 chaetae on Ant. II, labrum chaetotaxy 4/2,4, tubercles Di on Abd. V separated from each other, and 16 ventral chaetae Ve on Abd. Vl. Y. kikaiensis sp. nov. is most similar to Y. pacifica (Yosii, 1971). However, this new species is clearly distinguishable by its long macrochaetae, chaeta Ocm longer than chaeta Ocp and Oca on the head, Abd. I–IV with 2 ordinary chaetae Di, Th. II–III with 4 ordinary chaetae De, and ventral fringed lamella on the maxilla as long as dorsal claw-like lamella. Y. pacifica is a halobiont species, whereas Y. kikaiensis sp. nov. is found in forests. We provided keys to species in Paranura with three pairs of eyes and to all species of the genus Yuukianura. Furthermore, a checklist of all Japanese Neanurinae species and an identification key for all Japanese genera within the subfamily Neanurinae are included.

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A new species of the genus Crossodonthina (Collembola: Neanuridae: Neanurinae: Lobellini) from Yonaguni-jima in southwest Japan

Cited by 2 publications

References 14 publications

Species groups of Crossodonthina Yosii (Collembola: Neanuridae), with the description of a new species and a new record for C. bidentata Luo & Chen

Species groups of Crossodonthina Yosii (Collembola: Neanuridae), with the description of a new species and a new record for C. bidentata Luo & Chen

Two new Neanurid Collembola, Paranura and Yuukianura (Neanuridae: Neanurinae) from Japan, with a checklist of species and key to the Japanese genera of Neanurinae

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