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True Bugs of Zihuatanejo

SUBORDER HETEROPTERA

-Animals (Kingdom Animalia)

-Arthropods (Phylum Arthropoda)

-Hexapods (Subphylum Hexapoda)

-Insects (Class Insecta)

-Winged and Once-winged Insects (Subclass Pterygota)

-​True Bugs, Hoppers, Aphids, and Allies (Order Hemiptera)

-True Bugs (Suborder Heteroptera)​

-​Cimicomorph Bugs (Superfamily Reduvioidea)

-​Assassin Bugs (Family Reduviidae)

-​Subfamily Harpactorinae

-Tribe Harpactorini

-Genus Zelus

-Zelus cervicalis


Zelus cervicalis is a slender, predatory assassin bug in the family Reduviidae, found in warm regions of the Americas, including Mexico. Like other members of the genus Zelus, it is an active hunter that preys on a wide variety of small insects. A key adaptation of Zelus bugs is the presence of sticky secretions on their forelegs, which they use to trap prey. Once captured, the bug uses its piercing rostrum to inject enzymes that immobilize and digest the prey internally.

Zelus cervicalis

Zelus cervicalis

Diet

  • Adults and nymphs: Predatory, feeding on a wide variety of insects and other arthropods.

  • They use their piercing-sucking beak to stab prey and inject saliva containing digestive enzymes, allowing them to consume the liquefied contents of their victims.

  • Zelus cervicalis is a generalist predator and may capture caterpillars, beetles, true bugs, flies, aphids and other soft-bodied insects.

Range

  • Zelus cervicalis is a North and Central American assassin bug, occurring primarily in the southern United States and Mexico, with its distribution extending into parts of Central America.

  • It is associated particularly with warm, dry and subtropical regions, although its full distribution is broader than this habitat preference suggests.

  • Around Zihua, Zelus cervicalis would likely be considered occasional to locally common, particularly in open habitats and areas with abundant shrubs and herbaceous vegetation.

Habitat

  • This species occurs in open woodland, tropical and subtropical scrub, grassland, agricultural areas, gardens, roadsides and forest edges.

  • Individuals are generally found on vegetation where they actively search for prey or wait for insects to approach.

  • Around Zihua, suitable habitat includes tropical deciduous forest, thorn scrub, forest margins, agricultural fields, gardens and roadside vegetation.

Size

  • Zelus cervicalis is a medium-sized assassin bug, with adults generally measuring around 12–16 mm in length, although size varies somewhat between individuals.

  • It has the characteristic slender body, long legs, elongated head and prominent piercing beak typical of Zelus.

  • The body is generally brownish to reddish-brown, often with contrasting darker areas, providing relatively good camouflage among stems and dry vegetation.

  • The forelegs are adapted for grasping prey and may be held in a characteristic raised, ready-to-strike position while hunting.

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