Mesoveliidae

Definition

A family of semiaquatic true bugs (Hemiptera: Mesovelioidea) commonly called water treaders. Members are small, slender insects that inhabit the water surface film of ponds, streams, and wetlands, where they walk upon the meniscus using hydrophobic tarsi. The family comprises approximately 16 genera and 50+ described species, including the widespread genus Mesovelia. Mesoveliidae are considered among the most basal lineages of Gerromorpha, the infraorder of semiaquatic bugs that includes water striders and water measurers.

Etymology

From genus Mesovelia (Greek meso-, middle + velia, sail or veil, referring to habitat or habitus) + -idae, family suffix

Example

Mesovelia mulsanti, a common Holarctic species, is frequently found on the surface film of temporary woodland pools, where it preys on small invertebrates trapped in the surface tension.

Synonyms

• Water treaders

Related Terms

• Gerromorpha
• Mesovelioidea
• Gerridae
• Hydrometridae
• semiaquatic
• water surface film
• Hemiptera

Usage Notes

The family is sometimes grouped with Madeoveliidae in the superfamily Mesovelioidea. Species are distinguished from superficially similar gerrids (water striders) by their smaller size, more compact body form, and typically crepuscular or nocturnal habits. The name is feminine plural in form, following the type genus Mesovelia.