An aggregation of 11 males and 5 females of Tachypompilus ferrugineus was studied during August and September 1989 at a 2 m-high cemetery monument i Syracuse, NY. Male perching behavior and male-male and male-female interactions are described. Male-male interactions included acceptance, perching in close proximity, wing fanning, circling, following, and flight chases. Overt territoriality was not demonstrated by individual males, although several wasps each maintained a few or several stations. Despite noticeable size variation among wasps, there was no dominant-subordinate hierarchy. Male attachment to the cemetery monument waned as the season progressed due to mortality, increased floral feeding, and decreased female receptivity. Several males often simultaneously pursued an incoming female in an attempt to mate and such males exhibited extensive wing fanning and antennal waving.
Kurczewski, Frank E.
"Additional Observations on Tachypompilus Ferrugineus With Emphasis on Male Behavior (Hymenoptera: Pompilidae),"
The Great Lakes Entomologist, vol 23
Available at: https://scholar.valpo.edu/tgle/vol23/iss3/7