Large enough to take down a formidable arachnid opponent, the Spider Wasp uses all of its advantages to feed its offspring.
This species of Spider Wasp has a sleek, blue-black body. Dark wings are tipped in orange and bright yellow-orange antennae add warning coloration. The large size, stinging power, and strength of the female wasp allow it to take on spiders of similar or perhaps larger size, and win. Males are not as large. Adults drink flower nectar.
Attacking from flight helps give the wasp a tactical advantage. After a short tussle, when the Spider Wasp manages to overtake the spider and sting it, paralysis ends the scuffle. The female wasp then grabs the immobile spider and brings it back to a ground burrow that may have been abandoned by a rodent. At the end of this burrow is a deep cell or chamber. While depositing the spider there, she lays a fertilized egg. Once the egg hatches, the larva begins eating the spider while it is alive, but still paralyzed. Once the larva grows large enough, it pupates in this cell over the winter, and emerges as a winged adult in the early summer.
Because females lay many eggs in a season, they must collect multiple spiders as food stores. This usually means that their appearance is a bit haggard and worn out by the end of summer thanks to the many battles they had to fight. Look for this species of Spider Wasp in lots, fields, parks, and other open areas.
Scientific Name: Enytpus unifasciatus
Bee, Ant, Wasp and Similar
Size (Adult; Length): 15mm to 35mm (0.59in to 1.37in)
Note: An insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed above as they are driven by environmental factors (such as climate change), available food supplies and mating patterns. Grayed-out selections indicate that the subject in question has not been reported in that particular territory. U.S. states and Canadian provinces / territories are clickable to their respective bug listings.
Ant, Bee, and Wasp Anatomy
Antennae: Ants and Bees both have a pair of antennae on the head that senses their surroundings.
Head: The head contains the insect's compound eyes, antennae, and mandibles.
Thorax: Contains various vital parts such as the aorta and nervous system.
Abdomen: Contains various organs including the heart, gut, venom glands, and anus.
Legs: Ants and Bees have three pairs of legs attached to the thorax (center-body section).
NOTE: Ants, Bees and Wasps are part of the Hymenoptera order because they share many similarities.