Chilocorus nigrita
black ladybird beetle, black lady beetle
Chilocorus nigrita is a of ladybird beetle in the Coccinellidae. It belongs to the Chilocorus, which comprises small, often dark-colored ladybirds that feed primarily on scale insects. The species is known from forested and is considered a beneficial in natural . Unlike some commercially used ladybird species, Chilocorus nigrita is not widely sold for purposes.
Pronunciation
How to pronounce Chilocorus nigrita: /ˌkɪloʊˈkɔːrəs nɪˈɡraɪtə/
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Identification
Chilocorus nigrita can be distinguished from other Chilocorus by its predominantly black coloration. It may be confused with Chilocorus stigma (twice-stabbed ladybird beetle), which has two distinct red spots on the . Accurate identification requires examination of subtle morphological features including body shape, pronotum structure, and genitalia.
Images
Habitat
Forested , particularly in association with trees and shrubs where scale insects occur. The has been observed in dry-mesic upland deciduous forest.
Distribution
Known from North America; specific distribution records are sparse. The Chilocorus occurs across forested regions of the continent.
Diet
Scale insects (Coccoidea), including armored scales and possibly soft scales. As with other Chilocorus , it is a specialized of these plant-feeding Hemiptera.
Host Associations
- Nyssa sylvatica - has been observed on trunks of this tree
- Viburnum rufidulum - occurs in where this shrub is present
Ecological Role
of scale insects; contributes to natural of these plant pests in forest .
Human Relevance
Considered a beneficial due to its on scale insects. Not commercially sold for orchard or farm use, unlike some other ladybird species.
Similar Taxa
- Chilocorus stigmasimilar size and preference, but C. stigma has two red spots on black (hence 'twice-stabbed'), while C. nigrita is uniformly black
- Chilocorus hexacyclusanother black Chilocorus requiring careful morphological examination for separation
- Harmonia axyridisintroduced Asian ladybird beetle that occurs in similar but is highly variable in coloration and pattern, and is notably more abundant and widespread
More Details
Taxonomic Note
The Chilocorus is part of the Chilocorinae, a group of small, often dark ladybirds specialized for feeding on scale insects. in this genus are frequently difficult to distinguish without detailed examination.
Conservation Status
Not formally assessed; appears to be naturally uncommon rather than threatened, based on limited collection records.