Bioactive treasures in scorpion exuviae: anticancer insights from Hottentotta saulcyi extract fractions

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  Bioactive treasures in scorpion exuviae: anticancer insights from Hottentotta saulcyi extract fractions Abstract Despite significant improvements in cancer treatment, the development of therapeutic resistance remains a major cause of treatment failure. Therefore, the discovery of new anticancer agents is still necessary. Scorpions have a long history of use in traditional and specialized medicines, including anticancer applications, and have shown promise in modulating biological processes. They are of medical importance both globally and in the Kurdistan Region. However, there is still limited scientific evidence regarding their potential in cancer therapy. This study evaluated the natural organic compounds of whole-body scorpion extracts using GC–MS analysis and determined the in vitro cytotoxic effects of n-hexane (HO-Hex) and methanol (HO-Me) extracts against SW480, Calu-6, PC-3, HT29, AGS, and LNCaP cancer cell lines. The MTT assay was used to determine the effects of the ex...

Three new species of the orb-weaving spider genus Alpaida O. Pickard-Cambridge, 1889, the real male of A. guimaraes Levi, 1988 and the male of Aculepeira apa Levi, 1991 (Araneae: Araneidae)

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Three new species of the orb-weaving spider genus Alpaida O. Pickard-Cambridge, 1889, the real male of A. guimaraes Levi, 1988 and the male of Aculepeira apa Levi, 1991 (Araneae: Araneidae)

Abstract

Three new species of Alpaida O. Pickard-Cambridge, 1889 are described from the Brazilian Amazon region: Alpaida tukano sp. nov., A. kayapo sp. nov. and A. tupinamba sp. nov. Alpaida murtinho Levi, 1988 is newly synonymized with A. guimaraes Levi, 1988 and the male originally associated with A. guimaraes is redescribed as A. tupinamba sp. nov. The true male of A. guimaraes is redescribed, and the male of Aculepeira apa Levi, 1991 is described for the first time.

Pamplona, R., Bonaldo, A.B. & Pantoja, P. (2025) Three new species of the orb-weaving spider genus Alpaida O. Pickard-Cambridge, 1889, the real male of A. guimaraes Levi, 1988 and the male of Aculepeira apa Levi, 1991 (Araneae: Araneidae). Zootaxa, 5696 (1), 63–82. https://doi.org/10.11646/zootaxa.5696.1.4