Mycotrupes

LeConte, 1866

Mycotrupes is a of flightless, earth-boring comprising five described to the southeastern United States. All species are , each restricted to isolated deep sand ridges in peninsular Florida or elevated sand hill along the Piedmont-Atlantic Coastal Plain juncture in southern South Carolina and Georgia. The genus originated near the Fall during the , with Pleistocene sea level changes driving subsequent speciation. Flightlessness evolved early through metathoracic degradation and fusion of prothoracic elytrae.

Mycotrupes gaigei by no rights reserved, uploaded by Adam Pitcher. Used under a CC0 license.

Pronunciation

How to pronounce Mycotrupes: //ˌmaɪkoʊˈtruːpiːz//

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Identification

Flightless distinguished from winged relatives by metathoracic degradation and fusion of prothoracic elytrae. All five are and isolated to specific sand ridge or sand hill , allowing geographic separation as a primary identification aid. Mycotrupes gaigei specifically the phoretic Geotrupacarus mycotrupetes, which does not occur on .

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Habitat

Deep, well-drained sand ridges overlying porous limestone; xeric open woodland dominated by turkey oak and bluejack oak; understory of seedling oak clumps, low shrubs, dead leaf litter, scattered grasses, and herbs. Each occupies its own isolated sand ridge or sand hill .

Distribution

to the southeastern United States: deep sand ridges in peninsular Florida; elevated sand hill along the Piedmont and Atlantic Coastal Plain juncture in southern South Carolina and Georgia. distribution with strict habitat isolation between .

Diet

feeders utilizing virtually any available substrate: , decaying , litter, and exposed soft tissue of acorns.

Host Associations

Geotrupacarus mycotrupetes - phoretic associateSpecific to Mycotrupes gaigei; not found on other four described
Geotrupes egeriei - co-occurring Winged sharing Florida with M. gaigei; attracts G. mycotrupetes in laboratory settings but has not expanded 's range

Behavior

Efficient burrowers capable of tunneling through sand to depths exceeding six feet. Flightlessness restricts searching capacity. Phoretic associate Geotrupacarus mycotrupetes uses kairomonal cues to locate M. gaigei when sequestered in separate wire mesh cages beneath sand surface.

Similar Taxa

Geotrupes egerieiCo-occurs with M. gaigei in Florida but distinguished by presence of functional and broader distribution; strongly attractive to G. mycotrupetes in laboratory settings but does not naturally this