FWS Focus

Overview

Characteristics
Overview

The Casey's June beetle belongs to the scarab family. It was listed as endangered in 2011 and threats to the species include habitat destruction and modification, soil disturbance, flooding events and loss of individuals due to attraction to artificial light.

Scientific Name

Dinacoma caseyi
Common Name
Casey's June beetle
FWS Category
Insects
Kingdom

Location in Taxonomic Tree

Identification Numbers

TSN:

Characteristics

Characteristic category

Habitat

Characteristics
Habitat

It is found in alluvial fans, a fan-shaped deposit of sediment built up by stream and debris flow, and river wash areas, and is associated with desert wash and desert scrub vegetation.

Characteristic category

Physical Characteristics

Characteristics
Size & Shape

These beetles measure between 0.55 to 0.71 inches. Females are larger than males, are brown and wingless, and have enlarged abdomens and smaller legs.

Color & Pattern

It has dusty brown or whitish coloring, and brown and cream longitudinal stripes on the elytra, which are wing covers and back. Their antennae are clubbed and reddish brown. The clubbed ends have leaf-like plates that can be held together or fanned out to detect scents. For males, most of the body is covered in whitish scales, with much of the head, thorax and ventral surfaces covered with fine white hairs.

Characteristic category

Behavior

Characteristics
Behavior

Females are always observed on the ground and are considered flightless. Males are reported to fly back and forth or crawl on the ground where a female beetle has been detected.

Characteristic category

Life Cycle

Characteristics
Reproduction

Males and females emerge as adults from underground burrows to breed sometime between late March and early June, and are most abundant in April and May. After mating, females return to their burrows or dig a new burrow and deposit eggs. The egg, larval and pupal life stages occur underground.

Geography

Characteristics
Range

Their range is limited to southern portions of the City of Palm Springs, California and is generally associated with Palm Canyon Wash and Tahquitz Creek.

Launch Interactive Map

Timeline

Explore the information available for this taxon's timeline. You can select an event on the timeline to view more information, or cycle through the content available in the carousel below.

10 Items