Verrucosa

McCook, 1888

Species Guides

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Verrucosa is a of New World orb-weaver spiders ( Araneidae) first described by Henry McCook in 1888. The genus contains approximately forty-five described , with the vast majority distributed in South America. A single species, Verrucosa arenata (the arrowhead spider), occurs in the United States, ranging from the eastern USA through Panama and into the Greater Antilles. The genus exhibits a predominantly Neotropical distribution pattern.

Verrucosa arenata by (c) Katja Schulz, some rights reserved (CC BY). Used under a CC-BY license.Verrucosa by (c) Katja Schulz, some rights reserved (CC BY). Used under a CC-BY license.Verrucosa arenata P1120056a by xpda. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Verrucosa: /vɛˈru.ko.sa/

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Identification

Members of Verrucosa can be distinguished from other Araneidae by their characteristic abdominal . The type Verrucosa arenata is commonly known as the arrowhead spider due to the distinctive triangular or arrowhead-shaped with variable color patterns. Species-level identification within the genus often requires examination of genitalic structures and consideration of geographic distribution.

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Habitat

Most inhabit tropical and subtropical forest environments in South America. The North American representative V. arenata occupies wooded areas, forest edges, and shrublands where it constructs orb webs.

Distribution

Primarily South America, with highest diversity in Brazil, Colombia, Ecuador, and Peru. The extends northward through Central America and the Caribbean, with V. arenata reaching the eastern United States. One formerly placed in Verrucosa from Queensland, Australia (V. furcifera) has been reassigned to Carepalxis.

Behavior

As orb-weaver spiders, members of this construct spiral wheel-shaped webs to capture flying insect prey. V. arenata is known to rest -down in the center of its web, a typical araneid .

Ecological Role

of flying insects; their webs contribute to insect in forest and woodland .

Human Relevance

V. arenata (arrowhead spider) is occasionally encountered by humans in eastern North American woodlands but poses no medical significance. The has no documented economic importance.

Similar Taxa

  • AraneusBoth are orb-weaver in Araneidae; Araneus typically have more rounded and different color patterns than the triangular abdomen of V. arenata
  • NeosconaAnother common orb-weaver with which V. arenata may be confused; Neoscona lack the distinctive arrowhead-shaped and have different arrangement patterns

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