Solenysa akihisai, 2011

Tu, Lihong & Hormiga, Gustavo, 2011, Phylogenetic analysis and revision of the linyphiid spider genus Solenysa (Araneae: Linyphiidae: Erigoninae), Zoological Journal of the Linnean Society 161 (3), pp. 484-530 : 499-501

SOLENYSA AKIHISAI TU SP. NOV. ( FIG. 8)

Types: Male holotype, JAPAN: Hachioji , Tokyo (35.70°N, 139.30°E), coll. Andoh Akihisa, 20.xii.2003 ( NSMT). One male and two female paratypes, same data as holotype ( NSMT) .

Additional material examined: JAPAN: Tara, Mitoshi , Ibaraki (36.40°N, 140.40°E), coll. A. Ando, 27.xi.2000, three males and three females ( CNU) .

Etymology: Named after Andoh Akihisa who collected the type specimen.

Diagnosis: Males of S. akihisai can be distinguished by the bifid third branch of the lamella characteristica, with a flag-shaped anterior sclerite ( Fig. 8D). Females are diagnosed by the inversed equilateral triangular epigynal collar ( Fig. 8I).

Description: Male. Total length 1.40. Carapace 0.80 long, 0.43 wide. Abdomen 0.70 long, 0.43 wide. Chelicerae with four promarginal and two retromarginal teeth. Length of legs: I 2.44 (0.70 + 0.80 + 0.57 + 0.37); II 2.33 (0.67 + 0.73 + 0.50 + 0.43); III 1.74 (0.50 + 0.47 + 0.37 + 0.40); IV 2.16 (0.63 + 0.63 + 0.50 + 0.40). Tm I 0.20. Other somatic characters as reported in the genus description.

Female. Total length 1.30. Carapace 0.75 long, 0.45 wide. Abdomen 0.65 long, 0.45 wide. Chelicerae with four promarginal and two retromarginal teeth. Length of legs: I 2.75 (0.75 + 0.90 + 0.60 + 0.50); II 2.55 (0.75 + 0.80 + 0.55 + 0.45); III 1.95 (0.60 + 0.60 + 0.40 + 0.35); IV 2.40 (0.75 + 0.70 + 0.50 + 0.45). Tm I 0.26, Tm IV absent. Other somatic characters as reported in the genus description. Other genitalic characters as reported for S. melloteei group above.

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Variation: Male carapace length is 0.65–0.80, total length 1.15–1.45 (N = 3). Female carapace length is 0.72–0.75, total length 1.25–1.50 (N = 3).

Natural history: Unknown.

Distribution: Japan ( Fig. 22 ).

SOLENYSA PARTIBILIS TU, ONO & LI, 2007

( FIGS 11I, 12 , 13 )

Solenysa partibilis Tu et al., 2007: 60 , fig. 2A–D.

Type: Male holotype, JAPAN: (Ar. 2776), with label: Mt. Ibuki (35.20°N, 136.20°E), Shiga Prefecture, Honshu, Japan, coll. Ryoji Oi, 11.xi.1957 ( NSMT) .

Additional material examined: JAPAN: Mitake, Omeshi , Tokyo (35.80°N, E 139.18°E), coll. A. Andoh, 17.x.2004, three males and three females ( CNU) .

Diagnosis: The male of S. partibilis is similar to that of S. abikisai sp. nov., but differs in the bifid third branch of lamella characteristica with two long and pointed free ends ( Fig. 12B ). Epigynum is very similar to that of S. melloteei and S. akihisai but it can be distinguished by the shape of epigynal collar (see diagnosis for S. melloteei above).

Description: See Tu et al. (2007).

Distribution: Japan ( Fig. 22 ).

Figures

Figure 12. Solenysa partibilis. A–F, male palp: A, retrolateral; B, ventral; C, detail of A; D, anterior; E, detail of B; F, detail of D (arrow indicates sperm duct in embolus). G, anterior part of male abdomen showing epiandrous fusules absent and smooth book lung cover. H, detail of G. Abbreviations: ATA, anterior terminal apophysis; DSA, distal suprategular apophysis; E, embolus; LC1, anterior branch of lamella characteristica; LC2, median branch of lamella characteristica; LC3, posterior branch of lamella characteristica; MTA, median terminal apophysis; P, paracymbium; PBP, cymbial probasal process; PTA, posterior terminal apophysis; PTP, proximal tibial process; RLP, cymbial retrolateral process; STT, Solenysa tegular triangle; T, tegulum. Scale bars in mm.

Figure 13. Solenysa partibilis. A–D, epigynum: A, ventral; B, dorsal; C, caudal; D, detail of C. E–H, spinnerets: E, male; F, female; G, female ALS; H, female PLS. Abbreviations: AC, aciniform gland spigot(s); AG, aggregate gland spigot(s); ALS, anterior lateral spinneret; CY, cylindrical gland spigot(s); DP, dorsal plate; FO, fertilization opening; FL, flagelliform gland spigot(s); mAP, minor ampullate gland spigot(s); MAP, major ampullate gland spigot(s); PI, piriform gland spigot(s); PLS, posterior lateral spinneret; PMS, posterior median spinneret; SL, solenoid; VP, ventral plate. Scale bars in mm.

Figure 22. Distribution records of Solenysa species. Half-filled circle (), Solenysa retractilis sp. nov.; concentric circle (), Solenysa geumoensis Seo, 1996; circle filled with ‘i’ (), Solenysa wulingensis Li & Song, 1992; circle (•), Solenysa tianmushana sp. nov.; star (*), Solenysa protrudens Gao et al., 1993; cross (), Solenysa lanyuensis sp. nov.; flag (), Solenysa longqiensis Li & Song, 1992; balloon (), Solenysa yangmingshana sp. nov.; square (), Solenysa melloteei Simon, 1894; triangle (Δ), Solenysa akihisai sp. nov.; diamond (Ɨ), Solenysa partibilis Tu et al., 2007; pentagon (), Solenysa reflexilis Tu et al., 2007.