Zelus
Guides
Reduviidae
Assassin Bugs, Ambush Bugs, Kissing Bugs, Wheel Bugs, Thread-legged Bugs, Bee Assassins, Millipede Assassins, Masked Hunters
Reduviidae is a large cosmopolitan family of true bugs (Hemiptera: Heteroptera) comprising approximately 7,000 described species across more than 20 subfamilies. The family is predominantly terrestrial and predatory, with members employing diverse hunting strategies including ambush predation, active pursuit, and specialized prey capture using modified forelegs or sticky secretions. A notable exception is the subfamily Triatominae, whose members are hematophagous ectoparasites of vertebrates and vectors of Chagas disease. Most species possess a distinctive narrow neck, sturdy body, and curved proboscis that fits into a stridulatory groove on the prosternum, producing sound when rubbed against ridges. The family exhibits remarkable morphological diversity, with body sizes ranging from 12 to 36 mm and coloration spanning cryptic browns and blacks to aposematic reds, oranges, and metallic blues.
Zelus janus
Two-faced Assassin
Zelus janus is a species of assassin bug in the genus Zelus, first described by Stål in 1862. Like other members of this genus, it possesses the characteristic 'sundew' predatory adaptation: specialized glands on the forelegs secrete a sticky substance that traps prey. The species name references the Roman two-faced god Janus, though the specific reason for this epithet is not documented in available sources. It is one of approximately 71 species in the genus Zelus, which is distributed primarily in the Americas.
Zelus nugax
Zelus nugax is a species of assassin bug in the family Reduviidae, first described by Stål in 1862. As a member of the genus Zelus, it possesses the characteristic sticky forelegs used to capture prey, a trait that has earned these insects the common name 'sundew assassin bugs.' The species is distributed across the Americas, with records from the Caribbean, Middle America, North America, and South America. Like other Zelus species, it is a predatory insect that feeds on other small arthropods.