Amphelasma
Barber, 1947
Species Guides
1Amphelasma is a of skeletonizing leaf beetles in the Chrysomelidae, containing 11 described . These beetles are distributed from Venezuela to Mexico, with one species extending into southern Arizona. The genus was established by Barber in 1947 and belongs to the tribe Luperini within the Galerucinae.
Pronunciation
How to pronounce Amphelasma: /ˌæmfɪˈlæzmə/
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Identification
Members of Amphelasma can be recognized as small leaf beetles with the characteristic skeletonizing feeding damage they produce on plants. The is distinguished from related flea beetles and skeletonizing leaf beetles by a combination of morphological features established in the original description, though specific diagnostic traits require examination of .
Habitat
Associated with plants in various terrestrial environments where their food plants occur. Specific microhabitat preferences are poorly documented for most .
Distribution
Distributed from Venezuela to Mexico, with one (Amphelasma cavum) extending into southern Arizona. The occupies a primarily Neotropical distribution with limited Nearctic extension.
Diet
Herbivorous; feeds on plant foliage. Amphelasma cavum has been documented feeding on specific plants, though the complete host range for the remains incompletely known.
Behavior
Skeletonizing leaf beetles feed by removing tissue between leaf , producing a characteristic lace-like pattern of damage. The 'flea beetles' applied to some members suggests jumping ability, though this has not been specifically documented for Amphelasma.
Ecological Role
As herbivores, these beetles contribute to leaf damage and nutrient cycling in their . Their specific ecological functions beyond herbivory have not been studied.
Similar Taxa
- Other Galerucinae generaMany within the Galerucinae and tribe Luperini share similar skeletonizing feeding habits and general , requiring careful examination for accurate identification.
- Alticini (flea beetles)Amphelasma has been described as including 'flea beetles' in some sources, suggesting morphological or behavioral convergence with the tribe Alticini, which contains the true flea beetles with enlarged hind for jumping.
More Details
Taxonomic placement
The belongs to the tribe Luperini within the Galerucinae, though some sources have historically referred to members as 'flea beetles,' which may reflect morphological similarity to Alticini rather than actual tribal placement.
Species diversity
With only 11 described , Amphelasma represents a relatively small within the large Chrysomelidae. The genus may be understudied, with potential for additional undescribed species in its Neotropical range.