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Thomisidae Cebrenninus

Cebrenninus magnus Benjamin, 2016

Greater Cebrenninus

Cebrenninus species are less "crab-like" compared with many others in its family. With its long legs, dark brown body and nocturnal habits, it may be mistaken as a small huntsman spider. Nevertheless, closer examination of its eyes, legs and other structures will reveal that it is a crab spider. In Cebrenninus, the cephalic region is slightly elevated; it is covered with fine hair and textured like sandpaper. Pale, indistinct blotches are often present on the abdomen.

C. magnus has previously been recorded from Singapore as Cebrenninus rugosa which has slightly different male palps.

Length♀ 5–7 mm; ♂ 3–5 mm
Type LocalityBolaven Plateau, Champasak, Laos
DistributionSingapore, Malaysia (Sarawak, Selangor), Indonesia (Java), Brunei, Thailand, Laos, China.
HabitatMainly in or near primary forest.
BiologyIt emerges at night, especially after rain, from its hiding places on logs, tree trunks, root crevices, and from under large, moist bracket fungi.

Taxonomy

Type Deposits*

  1. Holotype

    Muséum d'histoire naturelle de la ville de Genève (MHNG), Geneva, Switzerland; ♂ (Benjamin, 2016)

Taxonomic references*

  1. Cebrenninus rugosus (♂♀; misidentified per Benjamin, 2016: 185)

    Tang & Li, 2010a Crab spiders from Hainan Island, China (Araneae, Thomisidae): 23, f. 17A-C, 18A-E, 19A-D doi:10.11646/zootaxa.2369.1.1

  2. Cebrenninus rugosus (♂♀; misidentified per Benjamin, 2016: 185)

    Benjamin, 2011 Phylogenetics and comparative morphology of crab spiders (Araneae: Dionycha, Thomisidae): 13, f. 5C, F, 8B, E-F, 27A-E, 28A-F, 29A-F doi:10.11646/zootaxa.3080.1.1

  3. Cebrenninus magnus (Original description ♂)

    Benjamin, 2016 Revision of Cebrenninus Simon, 1887 with description of one new genus and six new species (Araneae: Thomisidae): 185, f. 6-8, 35-36, 38-45 doi:10.5281/zenodo.46304

  4. Cebrenninus magnus (♂)

    Dhiya'ulhaq et al., 2025 Expanding the taxonomy of crab spiders (Araneae, Thomisidae) in Sumatra: a new genus, five new species, and regional records: 212, f. 5A-F, 6A-B doi:10.3897/zookeys.1241.148348

* Retrieved from the World Spider Catalog.

Distribution Map for Cebrenninus magnus Benjamin, 2016

Singapore, Malaysia (Sarawak, Selangor), Indonesia (Java), Brunei, Thailand, Laos, China.

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