A Remarkable Discovery: Exploring a Rare Eresus and Spider Wasp Interaction

  Photo Credit: © Antonino Rametta . All photographs are used with permission. No part of these images may be reproduced, distributed, or used in any form without the prior written permission of the photographer. A Remarkable Discovery: Exploring a Rare Eresus and Spider Wasp Interaction One of the most rewarding aspects of maintaining Arácnido Taxonomy is hearing from naturalists and photographers around the world who take the time to share their discoveries. Every so often, an email arrives that immediately captures your attention. Not because it claims to rewrite what we know about biodiversity, but because it documents something that very few people have the opportunity to witness. Recently, I was contacted by a naturalist in Sicily who shared a series of exceptionally high-quality photographs of a female ladybird spider ( Eresus ) during what appeared to be an interaction with a spider wasp. Along with the images came a simple question: "Could this be scientifically import...

Four new species of Harmonicon F. O. Pickard-Cambridge 1896 from Brazil with the first male description of H. rufescens (Araneae: Mygalomorphae: Dipluridae)


Four new species of Harmonicon F. O. Pickard-Cambridge 1896 from Brazil with the first male description of H. rufescens (Araneae: Mygalomorphae: Dipluridae)

Abstract
Four new species of Harmonicon F. O. Pickard-Cambridge 1896 are described from the Cerrado biome of Brazil. Three new species are from Tocantins state, in the North region of Brazil: H. arraias n. sp. (♂), H. palmas n. sp. (♂♀), H. tocantins n. sp. (♂), and one new species is from Mato Grosso state, in the Central-west Brazil: H. guimaraes n. sp. (♂♀). Furthermore, we here describe for the first time the male of H. rufescens F. O. Pickard-Cambridge 1896 and expand the distribution range of this species and that of H. candango Wermelinger-Moreira, Castanheira & Baptista 2024.
Gabriel Wermelinger-Moreira, Renner Luiz Cerqueira Baptista, Four new species of Harmonicon F. O. Pickard-Cambridge 1896 from Brazil with the first male description of H. rufescens (Araneae: Mygalomorphae: Dipluridae), Acta Arachnologica, 2026, Volume 75, Issue 1, Pages 25-46, Released on J-STAGE June 07, 2026, Online ISSN 1880-7852, Print ISSN 0001-5202, https://doi.org/10.2476/asjaa.75.25, https://www.jstage.jst.go.jp/article/asjaa/75/1/75_25/_article/-char/en