Trogoderma grassmani

Beal, 1954

Trogoderma grassmani is a of in the Trogoderma, described by Beal in 1954. Like other members of its genus, it belongs to a group of beetles commonly known as cabinet beetles or warehouse beetles, many of which are significant pests of stored products. The species is to North America. Information specific to this species is limited compared to betterknown such as () and Trogoderma variabile (warehouse beetle).

Trogoderma grassmani by no rights reserved, uploaded by Jesse Rorabaugh. Used under a CC0 license.

Trogoderma grassmani by (c) Trevor Van Loon, some rights reserved (CC BY), uploaded by Trevor Van Loon. Used under a CC-BY license.

Trogoderma grassmani by Simon Hinkley & Ken Walker, Museum Victoria. Used under a CC BY 3.0 au license.

Pronunciation

How to pronounce Trogoderma grassmani: //ˌtroʊɡoʊˈdɜːrmə ˈɡræsməni//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Trogoderma grassmani can be distinguished from other Trogoderma by genitalic characters and subtle differences in elytral patterning and setation. Accurate identification typically requires examination of male . The species is morphologically similar to other small in the , which are generally oval, compact beetles with patterned or banded . Identification to species level is difficult without specialized taxonomic expertise and reference collections.

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Distribution

North America. The has been recorded from the United States, though specific state records are sparse. Distribution is likely more restricted than widespread such as T. variabile.

Similar Taxa

Trogoderma variabileThe warehouse is a widespread pest of stored products with similar size and general appearance, but differs in elytral pattern and is more commonly associated with human structures and commodities.
Trogoderma glabrumThe cabinet shares similar preferences and , but can be distinguished by specific setal patterns and genitalic structures; it is notable for its unique reversed developmental capability under starvation.
Trogoderma granariumThe is a notorious pest with status, but is not to North America; it can be distinguished by specific morphological characters and its association with stored grain in international trade.

More Details

Taxonomic Context

Trogoderma grassmani was described in 1954 and is one of approximately 135 in the Trogoderma. A 2022 molecular phylogenetic study revealed that the genus Trogoderma as historically defined was polyphyletic, with Southern Hemisphere species reassigned to Eurhopalus. T. grassmani, as a Northern Hemisphere species, remains in Trogoderma stricto.

Research Status

This has received limited dedicated study compared to economically important . Most ecological and biological information about Trogoderma species has been derived from such as T. granarium and T. variabile, and direct extrapolation to T. grassmani is not warranted without specific evidence.