Diet

• Adults: Primarily feed on pollen, nectar, flowers and plant juices. Adults are often associated with flowering trees and shrubs.

• Larvae: Wood-boring, developing inside dead, dying or weakened branches and stems, where they tunnel through the wood.

• The specific larval host plants of S. histrio are not well documented.

Range

• Stenygra histrio is a round-necked longhorn beetle in the family Cerambycidae, subfamily Cerambycinae, tribe Ibidionini.

• The genus Stenygra is primarily Neotropical, with species occurring from Mexico through Central America and into South America.

• Around Zihuatanejo, it is occasional, with the greatest likelihood of encountering adults during the warm and rainy months, when flowering plants and woody vegetation are most active.

Habitat

• Found in tropical dry forest, tropical deciduous forest, woodland, forest edges, scrub and secondary vegetation.

• Adults may be encountered on flowers, foliage, branches and tree trunks, particularly in sunny locations.

• Around Zihuatanejo, flowering trees and shrubs are good places to search for adults during the day.

• Larvae remain concealed inside dead or weakened woody material.

Size

• Adult length: approximately 15–25 mm (0.6–1.0 in).

• Body elongated and cylindrical, with the long antennae characteristic of longhorn beetles.

• Typically reddish-brown to dark brown, with contrasting darker markings and a polished appearance.

• The relatively narrow, rounded pronotum is characteristic of the group.