Consider the following: 1. Carabid beetles 2. Centipedes 3. Flies 4. Termites 5. Wasps Parasitoid species are found in how many of the above kind of organisms?

Answer: B. Parasitoid species are found in only three of the listed organisms. A parasitoid is an organism that lives in close association with a host, ultimately killing it — distinct from a true parasite (which usually keeps the host alive). (1) Carabid beetles: a few species (subfamily Lebiinae) have larvae that act as parasitoids of other insects. YES. (2) Centipedes: predators that hunt and consume prey directly. NOT parasitoids. (3) Flies (Diptera): contain the largest order of parasitoids — Tachinidae, Phoridae, Bombyliidae are classic parasitoid families. YES. (4) Termites: detritivores and wood-feeders; not parasitoids. NO. (5) Wasps (Hymenoptera): the most well-known parasitoid group — Ichneumonidae, Braconidae, Chalcididae attack insect hosts. YES. So parasitoids are found in three groups: carabid beetles, flies, wasps. Source: Entomology references / Eickwort biology textbooks.