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Dynastes hercules is highly sexually dimorphic, with only males exhibiting the characteristic horns (one on the head, and a much larger one on the prothorax). The body of males is black with the exception of the elytra, which contains trabeculae in periodicity, which can have shades of olive-green. They have a black suture with sparsely distributed black spots elsewhere on the elytra. They have a slightly iridescent coloration to their elytra, which varies in color between specimens and may be affected by the humidity of the local environment in which they develop. At low humidity the elytra are olive-green or yellow in color, but darken to black at higher humidity due to its hydrochronic properties.

The larvae of the Hercules beetle are saproxylophagous, meaning that they feed on rotting wood; they reside in same during their two-year developmental stage. The adult Hercules beetle feeds on fresh, rotting fruit and tree sap. Adults carve bark through the use of its synchronous mandibles to easily access the sap of trees. When these mandibles are closed, a narrow opening is formed which can act like a straw to allow consumption of tree sap. They have been observed feeding on peaches, pears, apples, and grapes in captivity.

Dynastes hercules does not negatively affect human activities, either as an agricultural pest or disease vector. The beetles can be kept as pets. '''Larvae excrement has been shown to contain β-mannanase, a bacteria synthesized enzyme that hydrolyzes hemicellulose that can be used in enzyme based cleaning products. β-mannanase has been successfully extracted and cloned from larvae fecal matter, suggesting that production of bio additive cleaning products may be feasible'''

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6331513/

https://www.nature.com/articles/022585b0

https://academic.oup.com/gbe/article/14/10/evac147/6731085?login=false

use this https://www-sciencedirect-com.wv-o-ursus-proxy02.ursus.maine.edu/science/article/pii/S0141022921002143?via%3Dihub

https://core.ac.uk/download/pdf/36740203.pdf

https://ieeexplore.ieee.org/abstract/document/5690971