Henricus umbrabasana
(Kearfott, 1908)
Brown-shouldered Henricus
Henricus umbrabasana is a small tortricid known from the Pacific Coast of the United States. The was described by Kearfott in 1908 and is characterized by its modest forewing size of 7.5–9 mm. It is one of approximately 40 described species in the Henricus, a group of small tortricine moths predominantly distributed in the Nearctic region.
Pronunciation
How to pronounce Henricus umbrabasana: //ˈhɛn.rɪ.kəs ˌʊm.brəˈbɑː.sə.nə//
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Identification
The combination of small size (forewings 7.5–9 mm), geographic restriction to the Pacific Coast from Washington to California, and placement in the Henricus distinguishes this from other western North American tortricids. The genus Henricus is distinguished from related cochyline genera by genitalic characters not visible in field observation. Specific identification requires examination of genitalia or reference to original description.
Images
Appearance
A small with forewings measuring 7.5–9 mm in length. As a member of Tortricidae, it possesses the characteristic bell-shaped resting posture with wings held roof-like over the body. The specific epithet "umbrabasana" suggests dark or shadowy basal wing coloration, though detailed pattern descriptions are not well documented in available sources.
Distribution
Recorded from California and south-western Washington in the United States. Possibly occurs in Oregon, though this requires confirmation. The coastal distribution pattern suggests association with Pacific maritime climate zones.
Similar Taxa
- Other Henricus speciesApproximately 40 congeneric occur in North America, many with similar size and general appearance; reliable separation requires genitalic examination or geographic and correlation.
- Cochylini tribe membersOther small tortricines in the tribe Cochylini share the general body plan and size range; -level assignment requires detailed morphological study.
More Details
Taxonomic history
Originally described as Commophila? umbrabasana by Kearfott in 1908, later transferred to the Henricus. The question mark in the original combination indicates uncertainty about generic placement even at the time of description.
Observation frequency
The has accumulated 234 observations on iNaturalist, suggesting it is not exceptionally rare, though this may reflect observer effort in its accessible coastal range rather than true abundance.