Polyphylla aeolus
La Rue, 1998
Kelso Dunes June Beetle
Polyphylla aeolus is a sand dune scarab beetle to California's Kelso Dunes in the Mojave Desert. Described by La Rue in 1998, this belongs to a noted for large-bodied beetles with males possessing greatly enlarged, fan-like used to detect female . Like other Polyphylla species restricted to sand , females are likely flightless and rarely encountered. The species epithet references Aeolus, the Roman king of the winds, perhaps alluding to the wind-dispersed nature of related or the windy dune environment.
Pronunciation
How to pronounce Polyphylla aeolus: /ˌpɒlɪˈfɪlə ˈiːələs/
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Identification
Polyphylla aeolus can be distinguished from other Polyphylla by its restricted distribution at Kelso Dunes combined with specific morphological features documented in the original description. Males possess the characteristic enlarged, typical of the , with antennomeres significantly elongated to maximize surface area for detection. The species would be most easily confused with other southwestern Polyphylla species, particularly those also inhabiting sand dune systems; precise identification requires reference to La Rue (1998).
Habitat
Restricted to sand dune , specifically the Kelso Dunes in California's Mojave Desert. Based on congeneric , likely utilize vegetation at dune margins while larvae develop in sandy soils.
Distribution
to California, USA. Known only from the Kelso Dunes in the Mojave Desert (San Bernardino County).
Behavior
Males are and attracted to lights. Based on congeneric studies (particularly P. hammondi and P. decemlineata), males likely begin flying in late afternoon, with activity peaking at dusk as they search for females using their enlarged to detect . Females are presumed flightless and remain in or on the sand, as observed in other sand-dwelling Polyphylla . Males reportedly cease activity within hours after sunset, presumably when females stop release and burrow into the sand.
Similar Taxa
- Polyphylla hammondiAlso a large sand dune with similar male and antennal structure; distinguished by broader distribution across Great Plains sand dunes and different elytral pattern
- Polyphylla decemlineataShares enlarged male and light-seeking ; distinguished by transverse elytral bands and more widespread western distribution