Eurasian
Guides
Alopecosa
Fox Spiders
Alopecosa is a genus of wolf spiders (Lycosidae) comprising approximately 160 species. These ground-dwelling spiders are predominantly Eurasian in distribution, with some species extending into North Africa and North America. Most species reach up to 2 cm in body length. Females construct burrows for egg deposition and guard their egg sacs until hatching. The genus has been subject to taxonomic revision, with species historically grouped into sibling species complexes based on morphology, though courtship behavior and molecular techniques have proven more reliable for species delimitation.
Nemastoma
harvestman
Nemastoma is a genus of small harvestmen (Opiliones) in the family Nemastomatidae, first described by C.L. Koch in 1836. Species in this genus are litter-dwelling arachnids found primarily in Eurasia, with some introduced populations in North America. The genus includes species complexes with notable morphological diversity, such as the N. bidentatum complex, which exhibits extensive subspecific differentiation and parapatric distribution patterns in Slovenia. Several species have been documented as introduced to North America, including N. bimaculatum, which has established populations in Canada.
Orinisobates
Orinisobates is a genus of millipedes in the family Nemasomatidae, order Julida. It was established by Lohmander in 1933. The genus contains multiple species distributed across parts of Eurasia and has been introduced to North America. Members are small to medium-sized juliform millipedes with the elongated cylindrical body form characteristic of the order.
Polistes dominula
European Paper Wasp
Polistes dominula is a highly successful invasive social wasp native to Eurasia that has established populations across North America, South America, New Zealand, South Africa, and other regions. First detected in North America near Boston in 1978, it has become one of the most abundant wasps on the continent. The species builds small, exposed paper nests in protected locations and preys primarily on live insects, particularly caterpillars. Unlike yellowjackets, it does not scavenge for meat or sugar. Its rapid spread has been attributed to ecological flexibility, superior competitive ability, and tolerance of human-altered environments.
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Zorochros is a genus of click beetles (Elateridae: Negastriinae) comprising approximately 40 described species. Members are primarily distributed across Eurasia, with records from Scandinavia, Iran, and East Asia. The genus is chiefly associated with sandy riparian habitats, particularly river and stream banks.