Colaspis favosa
Say, 1824
grape colaspis
Colaspis favosa is a of leaf beetle in the Chrysomelidae, Eumolpinae. It is native to North America and occurs primarily along the Atlantic and Gulf coastal regions of the United States. The species has been documented as an early-season pest of soybean in the southern United States, where it is commonly known as the grape colaspis. It is one of several Colaspis species associated with agricultural crops.
Pronunciation
How to pronounce Colaspis favosa: /kɔˈlæspɪs fəˈvoʊsə/
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Identification
The can be distinguished from other Colaspis by its distribution along the Gulf and Atlantic coasts. Specific diagnostic morphological features distinguishing C. favosa from such as C. brunnea and C. floridana are not documented in available sources.
Habitat
Associated with agricultural landscapes, particularly soybean fields in the southern United States. The coastal distribution suggests affinity for lowland or near-coastal environments, though specific requirements remain undocumented.
Distribution
Native to North America. Range extends along the Gulf and Atlantic coasts of the United States from Texas through Georgia to New York. Documented in Ontario, Canada.
Seasonality
Active as an early-season pest in southern U.S. soybean production, with activity coinciding with early planting periods. Specific or activity periods are not documented.
Diet
Larvae and feed on plant roots and foliage. Documented as a pest of soybean (Glycine max); specific plant range beyond soybean is not established in available sources.
Host Associations
- Glycine max - pestDocumented as early-season pest of soybean in southern U.S.
Behavior
Larvae are soil-dwelling and feed on roots. feed on foliage. Specific behavioral details beyond general feeding habits are not documented.
Ecological Role
Herbivore in agricultural and presumably native . As a root-feeding larva, it may contribute to soil nutrient cycling, though this has not been studied.
Human Relevance
Agricultural pest of soybean in the southern United States. Economic impact is context-dependent; neonicotinoid have been used for control, with documented yield benefits in some years and regions. Not known to be a significant pest outside of agricultural contexts.
Similar Taxa
- Colaspis brunneaCongeneric leaf beetle with overlapping distribution; specific distinguishing features not documented
- Cerotoma trifurcataBean leaf beetle, also an early-season soybean pest; belongs to different and can be distinguished by and associations
More Details
Pest Management Context
Colaspis favosa is listed among early-season pests that have become more problematic with earlier soybean planting dates in the southern U.S. This shift in planting timing, intended to avoid drought and heat stress, has increased exposure to soil-dwelling larvae and early-emerging .