Table 1. Worker reproductive parasitism in eusocial species.

Eusocial species	Type of WRP	Rate of WRPa	Reference
Honey bees
Apis cerana	Intercolony parasitism in hopelessly queenless colonies	5.5%	[8]
Apis florea	Intercolony parasitism in hopelessly queenless colonies	22.5%	[6]
Apis mellifera	Intercolony parasitism in hopelessly queenless colonies	7.7%	[9]
Apis mellifera capensis	Intercolony parasitism in queenright colonies	6.4%b	[7]
Sweat bees
Lasioglossum malachurum	Intercolony parasitism in queenright colonies	?c	[10]
Stingless bees
Melipona scutellaris	Intergenerational parasitism in queenright colonies	18.5%	[12]
Bumble bees
Bombus deuteronymus	Intercolony parasitism in queenright colonies	6.7%	[15]
Bombus occidentalis	Intercolony parasitism in queenright colonies	?d	[13]
Bombus terrestris	Intercolony parasitism in queenright colonies	2.1%	[14]
Vespine wasps
Vespula consobrina	Interspecific parasitism in Vespula atropilosa colonies	?	[16]

WRP, worker reproductive parasitism; ?, unknown.

^aIn terms of proportion of parasite-worker-derived males.

^bThese are queens and not males due to thelytokous parthenogenesis [7]. Parasite workers also invade colonies of the subspecies Apis mellifera scutellata, causing the death of the host colonies [4], [5].

^cThese are queens and not males due to worker mating [10].

^dWRP has not yet been formally shown in this species but is likely to occur [13].