Litaneutria minor

Distinguished from other mantids by its ground-dwelling habit and cursorial (running) hunting behavior rather than ambush posture. Separated from the congener Litaneutria obscura (restricted to desert southwest) by broader Great Plains distribution. Distinguished from Yersiniops species (the other U.S. ground mantid genus) by rounded rather than pointed (horned) eye tops, and typically browner rather than greyer coloration. Fore femur lacks groove present in other mantid families; four spines on outer ventral margin of fore femur.

Adults measure approximately 30 mm in length. Body coloration is dark grey to dark tan, providing cryptic camouflage against ground substrates. Antennae are long and filamentous. Fore femur has four spines on the outer ventral margin and lacks the groove typical of other mantids. Males possess eight abdominal segments and a brown spot near the base of the forewings. Females have six abdominal segments, a rough-textured pronotum, and are wingless or possess only wing pads. Most males are also brachypterous (short-winged).

Open ground in dry and semi-arid regions, including shortgrass prairie, desert grasslands, and open scrub. Occupies areas with sparse vegetation where running pursuit of prey is feasible. Found at ground level or within a few centimeters above ground on small shrubs.

North America: Great Plains and western United States from eastern Washington and southwestern Canada (southern Okanagan Valley, British Columbia—Canada's only native mantid) south through Colorado, Arizona, and Texas into Mexico.

Active from early spring through late summer. Adults reach sexual maturity in late summer. Females lay oothecae in late summer and early fall. Eggs overwinter; nymphs emerge the following early spring. Adults die in fall.

Carnivorous. Prey includes moths, flies, grasshoppers, katydids, and crickets. Young nymphs feed mainly on small flies, transitioning to larger prey as they grow.

Egg stage overwinters in ootheca laid on twigs and branches. Ootheca measures 5–10 mm and contains 10–20 eggs. Nymphs emerge in early spring. Females undergo seven molts; males undergo six molts. Terminal molt occurs mid to late summer for both sexes. Adults live from late summer through fall.

Cursorial predator that actively runs down prey rather than employing typical mantid ambush strategy. Hunts on open ground during sunny days, occasionally on low vegetation. Extremely aggressive: defends against predators by extending forearms and standing tall to appear larger. Cannibalism occurs among nymphs. Males locate females by following pheromone trails; approach slowly to avoid being mistaken for prey. Sexual cannibalism during mating occurs at unusually high frequency (nearly all females consume male's head).

Predator in arid and semi-arid grassland and desert ecosystems. Controls populations of various insects including grasshoppers, crickets, and flies.

Subject of entomological study due to unusual cursorial hunting strategy and extreme sexual cannibalism. Potential interest for biological control in appropriate habitats, though not widely utilized. Occasionally encountered by collectors and naturalists in prairie and desert regions.

• Litaneutria obscuraCongeneric ground mantid restricted to desert southwest; L. minor occurs more broadly in Great Plains and western U.S.
• Yersiniops speciesOther U.S. ground mantid genus; distinguished by pointed (horned) eye tops versus rounded eyes in Litaneutria, and typically greyer coloration.
• Typical arboreal mantids (Mantidae, etc.)Distinguished by ground-dwelling habit, running pursuit of prey, reduced or absent wings in females, and fore femur lacking typical groove.

• cursorial predator
• ground-dwelling
• sexual cannibalism
• wingless female
• prairie
• desert
• overwintering eggs

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Litaneutria minor – agile ground mantid | Beetles In The Bush
• Biology of the Minor Mantid, Litaneutria Minor Scudder (Orthoptera, Mantidae)