Agrilus sapindi
Knull, 1938
native soapberry borer, Golden Soapberry Borer
Agrilus sapindi is a metallic wood-boring beetle in the Buprestidae, first described by Knull in 1938. It is commonly known as the native soapberry borer or Golden Soapberry Borer. The is found in North America and is associated with soapberry (Sapindus drummondii) as its plant.
Identification
of Agrilus sapindi can be distinguished from similar Agrilus by their association with soapberry (Sapindus drummondii) plants. Field observations indicate adults are attracted to low, non-flowering soapberry plants rather than flowering branches, a behavioral trait useful for locating specimens. The species exhibits typical Agrilus with metallic coloration characteristic of the .
Habitat
Associated with soapberry (Sapindus drummondii) stands, particularly in sandy areas and desert scrub . have been collected from low-growing soapberry plants and non-flowering branches. The occurs in areas with sufficient moisture to support plant growth, including dunes and riparian zones in arid regions.
Distribution
North America. Documented from New Mexico (Mescalero Sand Dunes area, Hwy 380 near San Antonio) and Texas (dunes near Kermit). GBIF records indicate presence in the with specific localities in the southwestern United States.
Seasonality
have been collected in late June to early July. Activity appears triggered by rainfall and plant flowering .
Diet
Larvae are wood-borers in soapberry (Sapindus drummondii). Specific larval feeding habits within tissues are not documented.
Host Associations
- Sapindus drummondii - larval plantsoapberry; associated with low, non-flowering plants
Behavior
are active during daytime and have been observed flying to low, non-flowering soapberry plants. Sweeping low vegetation is more effective for collection than beating flowering branches. Adults are attracted to plants and can be locally abundant when conditions are favorable.
Ecological Role
As a wood-boring , larvae contribute to nutrient cycling in soapberry stands. The is a herbivore dependent on Sapindus drummondii.
Human Relevance
The "native soapberry borer" distinguishes it from the soapberry borer (Agrilus prionurus), a related that threatens western soapberry . Agrilus sapindi is not considered a significant pest.
Similar Taxa
- Agrilus prionurusBoth are soapberry borers; A. prionurus is while A. sapindi is native. A. prionurus is a significant pest of western soapberry, whereas A. sapindi is not considered economically damaging.
- Agrilus ornatulusCollected syntopically with A. sapindi at soapberry stands; distinguished by preference and morphological differences.
- Agrilus limpiaeAlso associated with soapberry; may occur at same localities but distinguished by specific plant associations and .
More Details
Collection method
Field observations indicate that sweeping low, non-flowering soapberry plants is more effective for collecting than beating flowering branches, contrary to typical buprestid collecting techniques.
Conservation context
The native soapberry borer is distinguished from the soapberry borer (Agrilus prionurus), which poses a threat to western soapberry . Understanding the distribution and of the native is important for monitoring potential impacts from its invasive .