 |
| Cyclocosmia ruyi Yu & Zhang, in Yu, Li, Zhang et Zhang, 2023. |
Abstract
Background:
The genus Cyclocosmia Ausserer, 1871 previously included ten species from North America and Asia, six of which have been recorded from China.
New information:
A new species, Cyclocosmia ruyi Yu & Zhang sp. n., is described and diagnosed, based on both sexes from Guangxi Province, China. Morphological characters for the early stages of juveniles of the new species are also provided.
Keywords: Opisthosomal disc, early stages of spiderling, morphology, taxonomy, variation
 |
| Living specimens of Cyclocosmia ruyi Yu & Zhang sp. n.. A–B Paratype male (MHBU-ARA-00023660); C–F Holotype female. A–E Copyright 2023 Weihang Wang; F Comparison of female and egg sac, copyright 2023 Kun Yu. |
 |
| Opisthosomal discs of Cyclocosmia ruyi Yu & Zhang sp. n.. A Paratype male (MHBU-ARA-00023660); B Paratype male (MHBU-ARA-00023658); C Holotype female; D Paratype female (MHBU-ARA-00023659). |
 |
| Habitats (A–B) and burrows (C–E) of Cyclocosmia ruyi Yu & Zhang sp. n. A Landscape of type locality; B Microhabitat; C–D Burrow of holotype female, trapdoor closed (C) and opened (D); E Profile of burrow of paratype female (MHBU-ARA-00023657), with arrows indicating constricted basal tube; F–G Holotype female using opisthosomal disc as the false bottom of burrow, with egg sac (F) and egg sac removed (G). Figures are copyright 2023 Kun Yu. |
 |
| Cyclocosmia ruyi Yu & Zhang sp. n. A–B, E, G, I Paratype male (MHBU-ARA-00023660); C–D, H Paratype female (MHBU-ARA-00023657); F Paratype female (MHBU-ARA-00023659); J Holotype female; A–D Habitus; E–F Sternum; G Ocular area; H Bristles on clypeus; I–J Spinnerets. A, C, G–H Dorsal view; B, D, E–F, I–J Ventral view. |
Cyclocosmia ruyi Yu & F. Zhang, sp. n.
Diagnosis: The new species can be distinguished from the American congeners, Cyclocosmia loricata (C. L. Koch, 1842), C. torreya Gertsch & Platnick, 1975 and C. truncata (Hentz, 1841), by the more dense pores on spermathecae and the tips of spermathecae not processing lateral lobes (Fig. 7A–B, Fig. 9C–F), whereas the pores are relatively sparse and the lobes are well developed in the latter three species (see Gertsch and Platnick (1975): figs. 25–27).
Etymology: The specific epithet is from the Chinese "__” (rú yì), it is an auspicious blessing, meaning “everything goes well”; noun in apposition. "??如意”
Kun Yu, Changze Li, Shuyuan Zhang and Feng Zhang. 2023. A New Trapdoor Spider of Cyclocosmia Ausserer, 1871 from southern China (Araneae, Halonoproctidae). Biodiversity Data Journal 11: e98311. DOI: 10.3897/BDJ.11.e98311
