Crown-wasp
Guides
Megischus
crown wasp
Megischus is a large genus of crown wasps (family Stephanidae) containing over 90 described species with a cosmopolitan distribution centered in subtropical and tropical regions. The genus is characterized by medium to large body size, with adults ranging from approximately 10–40 mm in length (excluding the ovipositor). Females possess an exceptionally long ovipositor that typically exceeds body length, used to parasitize wood-boring beetle and hymenopteran larvae. The genus serves as an important biological control agent for pest populations of hardwood-damaging insects.
Megischus arizonicus
Arizona Crown Wasp
Megischus arizonicus is a species of crown wasp in the family Stephanidae, first described by Townes. Originally known only from Arizona, USA, the species has since been documented in central Mexico, expanding its known range significantly. Like other stephanids, it is a parasitoid wasp associated with wood-boring beetle larvae. The species exhibits the characteristic elongated, crown-like structure on the head that gives the family its common name. Records remain sparse, with only a handful of observations documented in biodiversity databases.
Megischus brunneus
Megischus brunneus is a species of parasitoid wasp in the family Stephanidae, order Hymenoptera. The genus Megischus belongs to an ancient lineage of wasps characterized by elongated, multi-segmented antennae and distinctive elongated neck-like structures. Members of this family are typically associated with wood-boring beetle larvae as hosts. Very little species-specific information has been published for M. brunneus.
Megischus californicus
Megischus californicus is a species of crown wasp in the family Stephanidae, an ancient lineage of parasitoid wasps characterized by their distinctive elongated, multi-segmented antennae. The genus Megischus represents one of the most primitive extant groups of Hymenoptera. This species is known from a single observation record, indicating it is either extremely rare, poorly sampled, or potentially extinct. Stephanidae are solitary parasitoids of wood-boring beetle larvae, using their long antennae to detect hosts within timber.
Megischus texanus
Texas Crown Wasp
Megischus texanus, commonly known as the Texas Crown Wasp, is a species of parasitoid wasp in the family Stephanidae. Crown wasps are characterized by their distinctive elongated, crown-like projection on the head and their parasitoid lifestyle targeting wood-boring beetle larvae. This species represents one of relatively few documented members of this ancient wasp family in North America.