Tissahamia kottawagamaensis ( Yao & Li, 2016 )

Huber, Bernhard A., 2019, The pholcid spiders of Sri Lanka (Araneae: Pholcidae), Zootaxa 4550 (1), pp. 1-57 : 30-31

publication ID	https://doi.org/10.11646/zootaxa.4550.1.1
publication LSID	lsid:zoobank.org:pub:2F7D1EC4-D4ED-4FAE-B227-CF7B79EAE833
DOI	https://doi.org/10.5281/zenodo.3510762
persistent identifier	https://treatment.plazi.org/id/CA3B104C-FF88-FF85-FF3D-FD24FBBDE72C
treatment provided by	Plazi (2019-04-03 07:01:19, last updated 2024-11-29 19:48:48)
scientific name	Tissahamia kottawagamaensis ( Yao & Li, 2016 )
status

Treatment

Tissahamia kottawagamaensis ( Yao & Li, 2016) View in CoL

Figs 101–102 View FIGURES 93–102 , 114–115 View FIGURES 110–115 , 119 View FIGURES 116–119 , 124–125 View FIGURES 120–125

Pholcus kottawagamaensis Yao & Li, 2016 in Dong et al. 2016: 208 View in CoL View Cited Treatment , figs 5–6 (♂ ♀, Sri Lanka).

Tissahamia kottawagamaensis View in CoL — Eberle et al. 2018 (molecular data). Huber et al. 2018: fig. 10.

Diagnosis and Description (amendments; see Dong et al. 2016). Procursus elements in principle as in T. maturata and T. karuna , with retrolateral membrane, bifid dorsal process, ventral ridge and pocket, and distal hinged sclerite ( Figs 114–115 View FIGURES 110–115 ). Differs from both species by prolateral ridge narrow and ending in bifid process with one part very small; by very large retrolateral membrane and distal elements; by prolateral process between proximal and distal elements weakly sclerotized. Females differ from T. maturata and T. karuna by large triangular (rather that oval or trapezoidal) epigynal plate and by large V-shaped (rather than evenly rounded) internal arc (‘valve’) visible through cuticle in front of epigynal plate ( Fig. 124 View FIGURES 120–125 ). Tibia 1 in 8 newly examined males: 8.1–11.0 (mean 9.6); in 13 females: 6.7–8.4 (mean 7.8). Internal female genitalia long, with elongated pore plates surrounded by weakly sclerotized cuticular folds ( Fig. 125 View FIGURES 120–125 ).

New records. SRI LANKA: 1♂ 1♀, NMSL , 5♂ 5♀, ZFMK (Ar 20072–73) and 1♀ 2 juvs in pure ethanol, ZFMK ( SL158 About ZFMK ), Southern Province, Kottawa Forest (6.097°N, 80.308°E), 60 m a.s.l., 17.iii.2017 (B.A. Huber) GoogleMaps . 3♂ 2♀, RMNH , same locality, “under leaves”, 15.x.1982 (F. Wanless) . 3♂ 8♀, ZFMK (Ar 20074) and 2♀ 1 juv. in pure ethanol, ZFMK ( SL153 About ZFMK ), Southern Province, Viharekele Forest (6.099°N, 80.594°E), 120 m a.s.l., 17.iii.2017 (B.A. Huber) GoogleMaps .

Natural history. The spiders built their domed webs with the apex connected to the undersides of live leaves. The webs were conspicuous (like in T. ethagala rather than in T. maturata ) and extended far beyond the leaf. Sometimes the webs were shared by many cecidomyiid flies.

Distribution. Known from two localities in southern Sri Lanka ( Fig. 225 View FIGURES 224–225 ).

References

Dong, T., Zheng, G., Yao, Z. & Li, S. (2016) Fifteen new species of the spider genus Pholcus (Araneae: Pholcidae) from Southeast Asia. Zootaxa, 4136 (2), 201 - 246. https: // doi. org / 10.11646 / zootaxa. 4136.2.1

Eberle, J., Dimitrov, D., Valdez-Mondragon, A. & Huber, B. A. (2018) Microhabitat change drives diversification in pholcid spiders. BMC Evolutionary Biology, 18, 141. https: // doi. org / 10.1186 / s 12862 - 018 - 1244 - 8

Huber, B. A., Eberle, J. & Dimitrov, D. (2018) The phylogeny of pholcid spiders (Araneae, Pholcidae): a critical evaluation of relationships suggested by molecular data. ZooKeys, 789, 51 - 101. https: // doi. org / 10.3897 / zookeys. 789.22781

Yao, Z., Dong, T., Zheng, G., Fu, J. & Li, S. (2016) High endemism at cave entrances: a case study of spiders of the genus Uthina. Scientific Reports, 6, 35757. https: // doi. org / 10.1038 / srep 35757

Figures

FIGURES 93–102. Tissahamia, live specimens. 93–96. T. ethagala (Huber, 2011), male from Ethagala, female with egg-sac from Kandalama, and females from Dematagala. 97–98. T. karuna sp. n., male and female with egg-sac from Labugama. 99– 100. T. maturata (Huber, 2011), male with mite and female with egg-sac from Hakgala. 101–102. T. kottawagamaensis (Yao & Li, 2016), male from Kottawa, female from Viharekele.

FIGURES 110–115. Left procursi in prolateral (upper row) and retrolateral views, all images at same scale. 110–111. Tissahamia karuna sp. n., from Labugama (ZFMK Ar 20066); asterisk marks area where males from Mitirigala have a small conical process. 112–113. T. maturata (Huber, 2011), from Hakgala (ZFMK Ar 20069); arrow points at distinctive prolateral process. 114–115. T. kottawagamaensis (Yao & Li, 2016), from Kottawa (ZFMK Ar 20072). Abbreviations: bp, bifid process; hs, hinged sclerite; m, membrane; po, pocket; r, ridge; ta, tarsus. Scale line: 0.5 mm.

FIGURES 116–119. 116–117. Tissahamia karuna sp. n., from Labugama (ZFMK Ar 20066), male chelicerae, frontal view; and processes of left genital bulb, prolateral view. 118–119. T. maturata (Huber, 2011) from Hakgala (ZFMK Ar 20069) and T. kottawagamaensis (Yao & Li, 2016) from Kottawa (ZFMK Ar 20072), processes of left genital bulbs in prolateral views (all genital bulbs at same scale). Abbreviations: a, ‘appendix’ (main bulbal process); e, embolus. Scale lines: 0.3 mm.

FIGURES 120–125. Epigyna in ventral views (upper row) and cleared female genitalia in dorsal views. 120–121. Tissahamia karuna sp. n., from Labugama (ZFMK Ar 20067); arrow points at internal arc (‘valve’). 122–123. T. maturata (Huber, 2011), from Hakgala (ZFMK Ar 20070). 124–125. T. kottawagamaensis (Yao & Li, 2016), from Kottawa (ZFMK Ar 20073). Abbreviation: pp, pore plate. At various scales.