Leuctra tenuis

As a member of the family Leuctridae (rolled-winged stoneflies), L. tenuis likely exhibits the characteristic wing posture of this family, where wings are rolled tightly around the body at rest rather than held flat or roof-like. The specific epithet 'tenuis' (Latin for 'thin' or 'narrow') and common name 'narrow-lobed' suggest diagnostic features related to the lobes of the body, possibly the paraprocts or other terminal abdominal structures. Definitive identification to species level in Leuctra typically requires examination of genitalic structures, particularly in males.

Recorded from Alabama, Arkansas, Connecticut, Delaware, Illinois, and additional North American locations. The species appears to have an eastern and central North American distribution pattern.

• Other Leuctra speciesMembers of the genus Leuctra are morphologically similar and often require examination of genitalic structures for definitive identification. L. tenuis may be distinguished by features related to its 'narrow-lobed' characteristic, though specific diagnostic characters require specialist literature.
• Other Leuctridae (rolled-winged stoneflies)All members of this family share the characteristic rolled-wing resting posture, but differ in body proportions, coloration, and genitalic morphology. L. tenuis is distinguished by species-specific features of the terminalia.

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