[2] Common names include marimbondo-do-campo, marimbondo-do-pasto,[4] marimbondo-exu, marimbondo-de-pote, marimbondo-de-purrão, and avispa-de-pote,[5] among others depending on the location.

The scutellum, metanotum, and propodeum, three of the hymenopteran back structures, combined form a flat, vertical surface in the middle of the body (mesosoma).

[2][8] In 1923, Bequeart performed a survey of the literature on this species, compiling accounts and descriptions by entomologists Ferdinand de Saussure, Hermann von Ihering, and du Buysson among numerous others, creating a source of descriptive information on this species.

[3] While not the focus, B. lecheguana has been included in studies of groups of wasps known to be natural enemies of agricultural pests,[12][13][14] and has been documented in a number of papers cataloging flower visitation by insects and birds.

[2] Nests are oval, about the size of a human head, made of gray paper-like material, and close to the ground.

[2] Bequeart includes a lengthy description of the construction process for one of these nests in his 1932 publication on Polybiinae wasps.

[2] New colonies are formed in the spring when several fertile queens, accompanied by a few worker wasps in a swarm, establish new nest sites.

A third group, with moderately developed ovaries containing 1-5 oocytes, was identified as an intermediate caste and accounted for around 60.3% of the colony.

[11] There is no difference in overall size, but the queens have a set of anatomical proportions distinct from the intermediates and workers, smaller in some structures and larger in others.

[7] Bequaert describes the extensive color and shape similarities between B. lecheguana and a number of other species with the word "homeochromic" instead of "mimic".

[2] In addition to obtaining nectar from flowers, B. lecheguana has been reported as a visitor of extrafloral nectaries on such species as Banisteriopsis malifolia.

[3] This wasp does not rely solely on nectar for food; it is a well-documented predator of a number of different arthropod species.

[22] Among its prey are beetles of the genus Anthonomus[3][22] and the coffee leaf miner Leucoptera coffeella.

[3] Another study suggests that B. lecheguana may also compete with parasitoids for coffee leaf miner larvae in an agricultural setting.

[14] Although this wasp visits a diverse collection of flowering plants,[2] it is only reported as a pollinator in a limited number of instances.

[14] B. lecheguana are often used as biological controls in coffee plantations in order to prevent the proliferation of the devastating leaf miner.

[2][4][5] While some report that the wasp is rather unaggressive even when disturbed,[2] others warn of its aggressive behavior towards human victims.