Tribolium madens

Charpentier, 1825

black flour beetle

Tribolium madens, the black , is a stored product pest in the Tenebrionidae. It belongs to the same as the economically significant (T. castaneum) and (T. confusum). The possesses a highly satellite -rich , with 124 satellite DNAs comprising 41.4% of its genetic material. Its karyotype consists of 2n=20 with variable numbers of small .

Reitter-1911-plate128 by Edmund Reitter
. Used under a Public domain license.

Pronunciation

How to pronounce Tribolium madens: /trɪˈboʊliəm ˈmeɪdənz/

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

Identification

Distinguished from by its darker coloration, earning it the 'black .' Specific morphological diagnostic features separating it from T. castaneum and T. confusum require expert examination. As with other Tribolium , are small (approximately 3-4 mm), oval, and flattened in body shape.

Images

Habitat

Stored product environments; associated with grain storage facilities, flour mills, and food processing operations where dried, starchy materials are present.

Distribution

Recorded from Canadian provinces: Manitoba, New Brunswick, Nova Scotia, Ontario, and Quebec. Global distribution insufficiently documented in available sources.

Diet

Feeds on dried, starchy materials including flour, cereals, and grain products. Specific dietary preferences relative to not documented.

Life Cycle

Complete with , larval, pupal, and stages. Detailed parameters specific to T. madens not documented in available sources.

Human Relevance

A stored product pest of potential economic significance in grain storage and food processing facilities. Less studied than T. castaneum and T. confusum, which are considered among the most common secondary pests of stored plant commodities worldwide.

Similar Taxa

Tribolium castaneum; distinguished by reddish-brown coloration versus the darker coloration of T. madens. Both are stored product pests with overlapping .
Tribolium confusum; similar size and preferences, requiring careful morphological examination for separation from T. madens.

More Details

Genomic characteristics

T. madens has one of the most satellite -rich characterized, with 41.4% satellite DNA content. The two most abundant satellites (TmSat1 and TmSat2) occupy multi-megabase (peri)centromeric regions on all including , and exhibit macro-dyad symmetries with potential to form hairpin or cruciform structures.

Chromosomal features

Karyotype of 2n=20 includes 18 plus XX/Xy_p , with variable numbers of small . The satDNA organization is comparable to T. castaneum and T. freemani.