Heliocausini

Taxobox
name = Heliocausini


image_caption = "Bembix" sp.
regnum = Animalia
phylum = Arthropoda
classis = Insecta
ordo = Hymenoptera
subordo = Apocrita
superfamilia = Apoidea
familia = Crabronidae
subfamilia = Bembicinae
tribus = Heliocausini
subdivision_ranks = Genera
subdivision =
*"Acanthocausus"
*"Heliocausus"
*"Tiguipa"

Heliocausini is a tribe of crabronid wasps endemic to South America, with a peak of species richness in arid central Argentina.The heliocausine wasps are notable for their marked and unusual sexual dimorphism. Males are larger than females (males are smaller than females in most insects), with very large eyes and with a number of bizarre metasomal modifications.

Behaviour

In some places it is common to find heliocausine males performing territorial displays which consist of fast take-offs, low-level flying and landings.