Allenius
Escalona & Ślipiński, 2012
Species Guides
1Allenius is a of lady beetles ( Coccinellidae) containing a single described , Allenius iviei. The genus was established in 2012 and is notable for its extreme rarity and distinctive . The sole species is known from only a few specimens collected in the northwestern United States.
Pronunciation
How to pronounce Allenius: //əˈlɛni.əs//
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Identification
The is characterized by an extremely elongated pronotum that extends forward to conceal the from view. The sole exhibits the unique ability among Coccinellidae to retract its head into the , a defensive not observed in other lady beetles.
Distribution
Known only from Idaho and Montana, United States. The has one of the most restricted distributions of any North American coccinellid.
Behavior
The retraction observed in the sole represents a distinctive defensive mechanism. No other behavioral data are available for the .
Human Relevance
The sole , Allenius iviei, is considered one of the rarest insects in the United States, with discovery in 2009 and formal description in 2012. Its extreme rarity has generated conservation interest.
Similar Taxa
- Other Coccinellidae generaAllenius is distinguished from all other lady beetles by the combination of an elongated pronotum and the unique retraction capability.
More Details
Taxonomic significance
The was established based on morphological features sufficiently distinct to warrant separate generic status, particularly the pronotal structure and associated retraction mechanism.
Conservation status
With only one known and extremely limited records, the represents a significant conservation concern for North American fauna.