Achurum sumichrasti

The combination of an exceptionally slender, cylindrical body and narrow pronotum separates Achurum sumichrasti from most other North American grasshoppers. Within the genus Achurum, species-level identification requires examination of male genitalia and subtle differences in pronotal shape and tegminal venation. It may be confused with other toothpick grasshoppers in the tribe Mermiriini, particularly species of Leuronotina and other Achurum species, which share the general elongate body form. Geographic location provides a useful initial filter: in the United States, it is known primarily from Texas, whereas other toothpick grasshoppers occur in different regions or have overlapping but distinguishable ranges.

Grasslands, prairies, and open vegetation with standing grasses and forbs. The slender body form suggests specialization for habitats with abundant narrow stems and blades, where crypsis is maximized. Specific microhabitat preferences within these broader categories have not been well documented.

Documented from the southern United States (Texas), Mexico (northeastern and southwestern regions), Costa Rica, and Panama. The distribution spans a transition zone between Nearctic and Neotropical realms, with the northern limit in Texas representing the edge of its range.

Activity period not precisely documented, but iNaturalist observations suggest adult presence during warmer months. As a subtropical to tropical species with temperate zone extensions, activity likely extends from spring through fall in northern portions of the range, with year-round activity possible in tropical localities.

Exhibits crypsis as a primary anti-predator strategy, remaining motionless to avoid detection. The slender body profile and coloration allow it to blend with grasses and narrow plant stems. When disturbed, individuals likely rely on escape flight; some related toothpick grasshoppers have been observed to flash brightly colored hindwings during flight as a secondary defense, though this has not been explicitly documented for A. sumichrasti.

Presumably functions as a primary consumer in grassland food webs, converting plant biomass to animal tissue available to predators. Its specialized cryptic morphology suggests coevolution with visually hunting predators such as birds and lizards. Specific quantitative contributions to ecosystem processes have not been studied.

No documented economic importance. Occasionally encountered and photographed by naturalists and entomologists; featured in educational contexts regarding grasshopper diversity and crypsis. Not known to be a crop pest or to reach outbreak densities.

• Prorocorypha snowiAnother toothpick grasshopper with similar elongate body form and cryptic habits; distinguished by generic-level characters and geographic distribution.
• Leuronotina ritensisShares the slender 'toothpick' morphology and cryptic coloration; occurs in similar habitats in the southwestern United States and Mexico, requiring careful examination for separation.
• Other Achurum speciesCongeners share the diagnostic body form of the genus; species identification relies on subtle structural characters of the pronotum and male genitalia.

• grasshopper
• slant-faced grasshopper
• toothpick grasshopper
• cryptic coloration
• grassland
• Texas
• Mexico
• Central America

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life
• What’s more difficult to see… | Beetles In The Bush