Argenna

Argenna is a genus of spiders belonging to the family Dictynidae. These spiders are commonly referred to as mesh-web weavers due to their distinctive cribellate silk webs. Argenna species are found in various regions, including Europe, Asia, and North America.

Characteristics:

Argenna spiders are typically small to medium in size. They are characterized by their cribellum, a specialized spinning plate used to produce a fuzzy, tangled silk. This cribellate silk is used to construct irregular, mesh-like webs, often found in crevices or on vegetation. These webs serve to ensnare prey. Argenna spiders are typically dull in coloration, often brown or gray, providing camouflage within their habitat. They possess eight eyes arranged in two rows.

Habitat and Distribution:

Argenna spiders exhibit a broad distribution, inhabiting diverse environments such as woodlands, grasslands, and rocky areas. Their presence is often linked to the availability of suitable web-building sites. They can be found under stones, bark, or within leaf litter.

Behavior:

Argenna spiders are generally nocturnal hunters, constructing their webs during the night and remaining concealed within them during the day. When prey becomes entangled in the web, the spider rapidly immobilizes it using its cribellate silk.

Taxonomy:

The genus Argenna contains several recognized species. Taxonomic classifications may be subject to change as new research emerges.

Importance:

Argenna spiders contribute to the ecological balance by controlling insect populations. They serve as a food source for other animals and play a role in the decomposition of organic matter. While not considered dangerous to humans, they are an important component of terrestrial ecosystems.