Altella aussereri, Mimetus laevigatus, and Trichoncyboides simoni (Araneae: Dictynidae, Mimetidae, Linyphiidae), three species of spiders new for Slovakia

Three species of spiders (Araneae), Altella aussereri Thaler, 1990, Mimetus laevigatus (Keyserling, 1863), and Trichoncyboides simoni (Lessert, 1904), are reported from Slovakia for the first time. These new records originate from southern Slovakia. The record of A. aussereri provides new data on the distribution and natural history of this range-restricted species of very high conservation value. The records of M. laevigatus and T. simoni in Slovakia extend their known distribution in Central Europe. Characteristic features, pictures of the habitus, copulatory organs, and habitats are presented

Elevation gradient affects the distribution and host utilisation of Zatypota anomala (Hymenoptera, Ichneumonidae) associated with mesh web weaving spiders (Araneae, Dictynidae)

The spatial distribution of parasitoids is closely linked to the distribution and ecological requirements of their hosts. Several studies have documented changes in the fauna composition of parasitoids in response to elevation, but data on parasitoids associated with spiders are missing. The koinobiont ichneumonid wasp Zatypota anomala is strictly specialised on spiders of the genus Dictyna (Dictynidae) in Europe. We examined the distribution of spiders of the family Dictynidae in forest ecotones in central Europe across a broad elevation gradient (110–1466 m a.s.l.). We checked the spiders for parasitism by Z. anomala. It was most abundant at the mid-elevations (median 712 m a.s.l., range 179–870 m a.s.l.). We identified four dictynid spider species as Z. anomala hosts. These were Dictyna arundinacea, Dictyna uncinata, Nigma flavescens, and Nigma walckenaeri. All four species and the genus Nigma were recorded as hosts for the first time. The parasitoids strongly preferred juvenile instars of their hosts. The body length differed between parasitised Dictyna and Nigma spiders (medians: 1.95 mm and 2.55 mm, respectively). The distribution of Dictyna and Nigma spiders overlapped along the elevation gradient, but parasitism incidence significantly differed between spider genera along the elevation gradient. Nigma was parasitized at lower elevations between 179–254 m a.s.l. and Dictyna at higher elevations between 361–870 m a.s.l. The phenology of Z. anomala is closely tied to the univoltine life strategy of its host spiders. The parasitoid female oviposits in autumn, and its offspring overwinter as larvae on the host, reach adulthood during spring, and pass the summer as an adult

Tegenaria hasperi Chyzer, 1897 and Zoropsis spinimana (Dufour, 1820), newly recorded synanthropic spiders from Slovakia (Araneae, Agelenidae, Zoropsidae)

Tegenaria hasperi Chyzer, 1897 (Agelenidae) and Zoropsis spinimana (Dufour, 1820) (Zoropsidae) are recorded in Slovakia for the first time. Both species were collected in synanthropic habitats in Western Slovakia. Two males of T. hasperi were collected in the garden of a family house, and both sexes of Z. spinimana were recorded from the interiors and exteriors of buildings in four separate cities, representing the first record of the family Zoropsidae in Slovakia. This contribution provides additional information on the morphological characteristics of these species. Digital images of their habitus and copulatory organs, as well as their distribution and habitat preferences are included.

Walckenaeria stylifrons and Spiracme mongolica (Araneae, Linyphiidae, Thomisidae), two new species to Slovakia

The spiders Walckenaeria stylifrons (O. Pickard-Cambridge, 1875) and Spiracme mongolica (Schenkel, 1963) are reported from Slovakia for the first time. These new records are based on adult males found in Western Slovakia in xerothermic habitats. The occurrence of W. stylifrons in Slovakia fills the gap in its distribution in Pannonian Basin and between Austria and Ukraine. Spiracme mongolica has been known only from the Balkans and south-eastern part of Europe to central Asia, this is the first record for Central Europe. We suggest Spiracme mongolica (Schenkel, 1963) new combination for Xysticus mongolicus Schenkel, 1963. Characteristic features, photographs of habitus and copulatory organs, and habitats of the new records are presented.