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Trachelidae Utivarachna

Utivarachna phyllicola Deeleman-Reinhold, 2001

Banded Bull-headed Hunter

This species may be readily distinguished from the Utivarachna sp. featured in the previous page by its smaller size and its paler colouration. The carapace is brownish, with the thoracic region marked by a dark, slightly curved V pattern (in females) or isolated dark patterns near the margins (in males). In both sexes, the abdomen is lightly coloured and traversed by dark bands and patches. The legs are brownish yellow with darker femora I. The carapace and abdomen of juveniles are almost equally light in colour with minimal dark markings.

This species also differs from the other Singapore Utivarachna species by having a rather short and less exposed pedicel. The male has a pair of balloon-like palps clearly visible with the naked eye.

Length♀ 4–5 mm; ♂ 4–5 mm
Type LocalityNakhon Ratchasima, Thailand
DistributionSingapore, Malaysia (Sabah), Indonesia (Sumatra), Brunei, Thailand (Nakhon Ratchasima).
HabitatFoliage in primary and secondary forests, living inside silken retreats under leaves.

Taxonomy

Type Deposits*

  1. Holotype

    Naturalis, National Museum of Natural History (RMNH), Leiden, Netherlands; ♂ (Deeleman-Reinhold, 2001)

  2. Paratype

    Naturalis, National Museum of Natural History (RMNH), Leiden, Netherlands; 1♂ 1♀ (Deeleman-Reinhold, 2001)

Taxonomic references*

  1. Utivarachna phyllicola (Original description ♂♀)

    Deeleman-Reinhold, 2001 Forest spiders of South East Asia: with a revision of the sac and ground spiders (Araneae: Clubionidae, Corinnidae, Liocranidae, Gnaphosidae, Prodidomidae and Trochanterriidae [sic]): 386, f. 604-609

  2. Utivarachna phyllicola (♂)

    Dankittipakul, Tavano & Singtripop, 2011c Two new species of the spider genus Utivarachna Kishida, 1940 from Southeast Asia (Araneae, Corinnidae): 143, f. 5

  3. Utivarachna phyllicola (♂)

    Ono & Aung, 2022 A record of Utivarachna phyllicola (Araneae, Trachelidae) from Lampi Island, southern Myanmar: 30, f. 1-7 doi:10.50826/bnmnszool.48.2_29

  4. Utivarachna phyllicola (♂♀)

    Dhiya'ulhaq et al., 2024 Four new species of Utivarachna Kishida, 1940 (Araneae: Trachelidae) from Sumatra: 560, f. 7A-C, 8A-C, 9A-E doi:10.11646/zootaxa.5418.5.6

* Retrieved from the World Spider Catalog.

Distribution Map for Utivarachna phyllicola Deeleman-Reinhold, 2001

Singapore, Malaysia (Sabah), Indonesia (Sumatra), Brunei, Thailand (Nakhon Ratchasima).

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