Nothopleurus madericus

As a member of Prioninae, Nothopleurus madericus likely exhibits the subfamily's characteristic large size, robust mandibles, and antennae that may be serrate or slightly clubbed in females. The genus Nothopleurus is distinguished within Macrotomini by specific features of the pronotum and elytra, though precise diagnostic characters for N. madericus require examination of type specimens. The species is notably larger than most sympatric cerambycids; field observers have described it as a "large prionid."

Based on the type locality and field observations, Nothopleurus madericus occurs in oak-juniper woodland and pine-oak forest of the Sky Island mountain ranges in southeastern Arizona. One individual was observed in an emergence hole on Quercus emoryi (Emory oak). The species has been found at moderate elevations in the Santa Rita Mountains.

Documented from southeastern Arizona, specifically the Santa Rita Mountains (Madera Canyon area). The species epithet and field records suggest this is the core range. Catalogue of Life and GBIF list broader distributions to Central America and North America, though specific country records beyond the United States require verification.

Adult activity has been observed in late July. A field observer noted encountering an adult at dusk during storm conditions, when longhorn beetles typically become active.

• Quercus emoryi - probable larval hostAdult observed in emergence hole on trunk

One field account describes an adult partially emerging from a trunk hole, showing only mandibles and antennae, and withdrawing when disturbed. This suggests crepuscular or nocturnal adult activity and potential sensitivity to disturbance. Adults may be attracted to light, as is common in Prioninae.

As a wood-boring cerambycid, larvae likely contribute to decomposition of dead oak wood and nutrient cycling in montane forest ecosystems. The species appears to be rare and locally distributed, suggesting specialized ecological requirements.

Primarily of interest to coleopterists and natural historians. The species is considered rare and desirable among collectors. Its type locality in a well-known collecting area (Madera Canyon) makes it a target species for beetle enthusiasts visiting southeastern Arizona.

• Derobrachus hovoreiAlso a large prionine in the same region, but distinguished by different pronotal structure and association with palo verde rather than oak
• Polyphylla spp.Large scarabs that come to lights in same habitats, but readily distinguished by lamellate antennae and different body form

• Cerambycidae
• Prioninae
• longhorn beetle
• wood-boring beetle
• oak-associated
• Sky Islands
• Arizona endemic
• rare species

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life
• Belostomatidae | Beetles In The Bush