Conchylodes octonalis
Zeller, 1873
Eight-barred Lygropia Moth
Conchylodes octonalis, described by Zeller in 1873, is a small in the Crambidae. It occurs across western and central North America in low-elevation arid environments. The is named for the eight dark transverse bars on its . are active from late March through October, and feed on Heliotropium curassavicum.
Pronunciation
How to pronounce Conchylodes octonalis: /kɒnˈkaɪloʊdiːz ɒkˈtoʊnəlɪs/
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Identification
The eight transverse bars distinguish this from other Conchylodes species and most other small crambid . length of 7.5–8.5 mm provides a size reference. Similar species Conchylodes ovulalis (zebra conchylodes moth) has zebra-like striping rather than transverse bars. Examination of may be required for definitive identification of some specimens.
Appearance
Small with measuring 7.5–8.5 mm. display eight distinct dark transverse bars against a lighter background, giving rise to the . Typical crambid body plan with elongated labial forming a 'snout' projection. Coloration and pattern provide against bark and vegetation in arid .
Habitat
Low-elevation arid areas including desert scrub, dry grasslands, and semi-arid open woodlands. Associated with supporting the larval Heliotropium curassavicum.
Distribution
North America from central and southern California eastward to Texas, with scattered records north to Iowa and east to Tennessee. Documented from California, Nevada, New Mexico, Texas, Oklahoma, Iowa, Mississippi, and Tennessee.
Seasonality
on from late March to October. Extended season suggests multiple or continuous in favorable conditions.
Diet
feed on Heliotropium curassavicum (seaside heliotrope), a herb in the borage .
Host Associations
- Heliotropium curassavicum - larval herb in Boraginaceae; also known as seaside heliotrope or salt heliotrope
Ecological Role
Larval on Heliotropium curassavicum. Role in as for birds, , and other . likely serve as when visiting flowers.
Human Relevance
No significant economic importance. Occasionally encountered by and naturalists in arid western . Not known to be a pest of agricultural or horticultural significance.
Similar Taxa
- Conchylodes ovulalisSimilar size and , but distinguished by zebra-like longitudinal striping rather than transverse bars; also known as zebra conchylodes
More Details
Taxonomic history
Described by German Philipp Christoph Zeller in 1873. The specific epithet 'octonalis' refers to the eight (octo-) bars. The Conchylodes contains multiple North with patterned wings, many with descriptive referencing their appearance.