Styloperlidae

Definition

A small family of stoneflies (order Plecoptera) containing at least two genera and nine described species, distributed in Southeast Asia and characterized by distinctive wing venation and genitalic morphology. The family name derives from the type locality near Sapa, Vietnam.

Etymology

From Styloperla (type genus, combining Greek stylos 'pillar' or 'column' with the stonefly genus suffix -perla) + -idae (family suffix).

Example

Styloperlidae species are typically collected from fast-flowing montane streams in Vietnam and adjacent regions, where nymphs inhabit rocky substrates and adults emerge during the wet season.

Related Terms

• Plecoptera
• stonefly
• Perlidae
• Perlodidae
• Chloroperlidae
• Pteronarcyidae
• wing venation
• genitalia

Usage Notes

Styloperlidae is one of the smaller families within the diverse order Plecoptera; it is distinguished from the more species-rich Perlidae and Perlodidae by reduced anal veins in the forewing and simplified male paraprocts. The family's limited diversity and restricted geographic range make it a minor but phylogenetically informative lineage in stonefly systematics.