Hoplinus echinatus
(Uhler, 1893)
Hoplinus echinatus is a stilt bug in the Berytidae, characterized by its elongated, slender body and long legs typical of the group. It has been documented as a associated with sticky plants in western North America, where it navigates resinous or hooked trichomes to feed on trapped insect carrion. The species occurs across a broad range of arid and semi-arid from southwestern Canada through the western United States to northern Mexico. Its links it to plant-based where dead insects serve as a resource for predatory arthropods.
Pronunciation
How to pronounce Hoplinus echinatus: /ˈhɒplɪnəs ˌɛkɪˈneɪtəs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other stilt bugs by combination of spiny body surface and geographic distribution. Separated from Hoplinus maculatus by pattern and degree of spination. Distinguished from Jalysus wickhami, which co-occurs on sticky plants, by body proportions and antennal segment ratios. Long legs and slender build differentiate it from most other predatory Hemiptera in its .
Images
Appearance
Elongate, slender body with extremely long, stilt-like legs characteristic of Berytidae. Body surface with spiny or bristly projections (reflected in specific epithet 'echinatus', meaning spiny). long and thread-like. Coloration typically brown or grayish, providing camouflage in dry . possess fully developed wings.
Habitat
Arid and semi-arid environments including grasslands, chaparral, and open woodlands. Strongly associated with sticky plants producing resinous, oily, or hooked trichomes, particularly tarweed (Madia elegans) in California. Occurs in with sparse to moderate vegetation cover and well-drained soils.
Distribution
Western North America: Canada (British Columbia), United States (Arizona, California, Colorado, Idaho, Nevada, New Mexico, Oregon, Texas, Utah, Washington), and Mexico (Baja California Norte, Chihuahua).
Seasonality
Active during growing season of associated plants; observed on tarweed from June through September in California study sites. presence coincides with flowering period of sticky plants.
Diet
Predatory, feeding on small insect carrion trapped by sticky plant trichomes. Documented feeding on dead Drosophila fruit flies placed on tarweed plants. Has been observed as part of guild consuming insects immobilized by plant resin.
Host Associations
- Madia elegans - associationTarweed; sticky plant providing access to trapped insect prey
Behavior
Navigates sticky plant surfaces without becoming entrapped, allowing access to insect carrion unavailable to other . Part of predator that responds numerically to availability of plant-trapped prey. Movement patterns and specific activity rhythms have not been documented.
Ecological Role
Contributes to indirect plant defense as a supported by plant-trapped insect carrion. Presence increases with availability of dead insects on sticky plants, leading to reduced herbivory by caterpillars. Functions as a secondary consumer linking plant-trapped detritus to higher .
Human Relevance
No direct economic or medical significance. Subject of ecological research on plant- interactions and the role of carrion in .
Similar Taxa
- Jalysus wickhamiCo-occurring stilt bug on sticky plants; distinguished by different body proportions and antennal structure
- Hoplinus maculatus with overlapping range; differs in pattern and spination details