Best Parasite

Bombus variabilis is a rare North American cuckoo bumblebee notable for its heavily declining populations and its total reproductive dependence on other bumblebee colonies.

Bombus variabilis, the variable cuckoo bumblebee, is a North American social parasite that invades the colonies of other bumblebee species rather than forming its own.

Bombus suckleyi, Suckley's cuckoo bumblebee, is a North American social parasite that specifically targets the resource-rich nests of orange-belted bumblebees in the western US.

The largetooth cookiecutter shark is Isistius plutodus, a rare deepwater shark notable for large lower teeth that gouge oval wounds from larger animals.

Gooden's nomad bee (Nomada goodeniana) is a European cuckoo bee notable for its distinctive black and yellow wasp-like appearance and its parasitic relationship with mining bees.

Bombus rupestris is a large cuckoo bumblebee found across Europe, notable as an obligate social parasite that invades the established nests of the red-tailed bumblebee species.

Nomada marshamella is a wasp-like European cuckoo bee that lacks a pollen-carrying structure, relying entirely on parasitizing the nests of Andrena mining bees.

Nomada rufipes, known as the fringed nomad bee, is a Palearctic cleptoparasite distinctive for its red and black abdomen, specifically targeting the nests of heather mining bees.

Nomada fucata, the painted nomad bee, is a Palearctic cuckoo bee species that targets mining bees of the Andrena genus, invading their burrows to lay eggs and steal pollen provisions.

Splinter is a 2008 American creature-feature film directed by Toby Wilkins and starring Shea Whigham, Paulo Costanzo, and Jill Wagner. Its characters become trapped at an isolated gas station while confronting a parasitic organism that infects bodies, reanimates tissue, and produces sharp, splinter-...

The Cuckoo Sweat Bee is a cleptoparasitic insect native to Europe that lacks pollen-collecting structures and is notable for laying its eggs inside the nests of other bees.

Bombus campestris, the field cuckoo bumblebee, is a widespread Eurasian insect distinguished by its parasitic lifestyle, laying its eggs in the nests of other bumblebee species.

Coelioxys octodentata is a Palearctic cuckoo bee distinguished by its sharp, spiny abdomen, which it uses to infiltrate and parasitize the nests of megachilid bees.

Bombus sylvestris, known as the forest cuckoo bumblebee, is a parasitic species native to Europe and Asia that specifically targets the established nests of early-nesting bees.

Coelioxys rufitarsis is a solitary cuckoo bee found in North America, notable because it lacks pollen-collecting structures and parasitizes leafcutter bee nests.

Bombus insularis, the indiscriminate cuckoo bumblebee, is a North American parasite notable for its broad host range, invading the colonies of numerous other bumblebee species.

Bombus citrinus, the lemon cuckoo bumblebee, is a North American species recognized by its bright yellow thorax and its parasitic behavior of usurping ground-nesting bee colonies.

The Mormon metalmark nomad bee (Nomada mormon) is a North American cuckoo bee that lacks pollen-collecting structures, notable for laying its eggs in the nests of other solitary bees.

Coelioxys conoidea is a solitary bee native to Eurasia, notable as a kleptoparasite because females lay their eggs in the active nests of leafcutter bees to feed on their pollen.

Coelioxys rufescens is a solitary cuckoo bee found across Eurasia, notable for its parasitic breeding strategy of laying eggs in the provisioned nests of other leafcutter bees.

Stelis punctulatissima is a dark solitary bee native to Europe, notable for its cleptoparasitic lifestyle of laying eggs in the provisioned nests of other cavity-nesting bees.