Hidden diversity in plain sight: four new species of Nemesia (Araneae: Mygalomorphae) from the Córdoba Province of Spain

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  Hidden diversity in plain sight: four new species of Nemesia (Araneae: Mygalomorphae) from the Córdoba Province of Spain Abstract A taxonomic revision of the species of Nemesia Audouin, 1826, distributed in the vicinity of Córdoba City, southern Spain, is presented. Four new species are described: Nemesia morana sp. nov. (female), N. kodama sp. nov. (male and female), N. rosae sp. nov. (male and female), and N. tamajoni sp. nov. (male and female). These species are distinguished by distinct morphological characters, including the shape of the spermathecae, palpal bulbs, and spinnerets, as well as by burrow architecture. Fieldwork was conducted across two of the three major habitat types in the region—the humid, forested mountains of Sierra Morena and the croplands and riparian forests of the Guadalquivir Valley—while the third, the “campiña”, which is mainly composed of agricultural landscapes, remains poorly explored. Sampling methods included pitfall trapping and the direct e...

Systematic study of the Ageniellini spider wasp genus Machaerothrix Haupt (Hymenoptera: Pompilidae) from Japan and Southeast Asia

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Systematic study of the Ageniellini spider wasp genus Machaerothrix Haupt (Hymenoptera: Pompilidae) from Japan and Southeast Asia

ABSTRACT

A systematic study of Machaerothrix Haupt from Japan and Southeast Asia was conducted. The description of the genus is revised. The female and male of M. tsushimensis natsumiae subsp. n. from Honshu, Japan, the female of M. malaysiensis sp. n. from Malaysia, the male of M. tsushimensis tsushimensis Yasumatsu from Tsushima Is. Japan, and the female of M. quadridentata (Tsuneki) from the Philippines are described for the first time. The female of M. tsushimensis tsushimensis and the male of M. quadridentata are redescribed. A key to all the known species of the genus is presented. The distribution, nesting and social behaviour of the genus are discussed.

Shimizu, A., Kim, J. K., Handa, H., Otsui, K., Yoshimura, J., & Pitts, J. P. (2026). Systematic study of the Ageniellini spider wasp genus Machaerothrix Haupt (Hymenoptera: Pompilidae) from Japan and Southeast Asia. Journal of Natural History, 60(13–16), 763–790. https://doi.org/10.1080/00222933.2026.2627505