Arcuphantes denticulatus

Jin, Miao, Ma, Shuangchun & Tu, Lihong, 2018, A review of the Arcuphantes species with the genitalia of arcuatulus - type (Araneae, Linyphiidae), Zootaxa 4425 (3), pp. 498-510: 507

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Arcuphantes denticulatus

new species

Arcuphantes denticulatus  new species

Figs 2F–J View Figure , 6 View Figure , 7E–F View Figure

Type material examined. Holotype ♂. USA, Washington: 4 miles northwest of Monroe, 122°01’W; 47°53’N, 27.viii.1959, W. J. Gertsch & V. Roth leg. (AMNH-146). ParatypeGoogleMaps  . 1♂, same data, together with the holotypeGoogleMaps  .

Etymology. The species name comes from the Latin words ‘denticulatus’, in reference to the fine and close teeth on the central serrated area of the radix.

Diagnosis. The male A. denticulatus  n. sp. can be distinguished by the bifid outer paracymbial arm with a sharp inner apophysis ( Figs 6C View Figure , 7F View Figure ), which is blunt in A. arcuatulus  ( Figs 4C View Figure , 7B View Figure ); the flat terminal apophysis having the anterior projection extending forwards ( Figs. 6D View Figure , 7E View Figure ), and by the central serrated area with fine and close teeth ( Figs. 2I –J View Figure , 6D–E View Figure ), while it is uneven in A. arcuatulus  and A. cruciatus  n. sp. ( Figs 4D–E View Figure , 5D–E View Figure ). The female unknown.

Description. Male (AMNH-146): Total length 2.29. Carapace 0.90 long, 0.75 wide. Abdomen 1.36 long, 0.75 wide. Leg lengths: I 9.02 (2.52+2.95+2.14+1.41); II 8.02 (2.16+2.51+2.18+1.17), III 5.36 (1.63+1.51+1.43+0.79); IV 7.49 (2.04+2.28+1.96+1.21). Tm I 0.22. Female unknown.

Other somatic and genital characters: see the general description for the Arcuphantes  species with arcuatulus  - type genitalia.

Distribution. USA (Washington).