Final answer:
The African malaria mosquito, Anopheles gambiae, is an insect found in the African rain forest and is known for transmitting malaria to humans.
Step-by-step explanation:
The African rain forest is home to a wide variety of insect life due to its warm climate and high humidity, which are ideal conditions for many species. Among the insects listed, mosquitoes, fireflies, butterflies, and beetles can all be found in these environments. However, regarding the insect specifically mentioned in the question, the Anopheles gambiae, commonly known as the African malaria mosquito, is indeed one insect that calls the African rainforest its home. This mosquito acts as a vector for transmitting the malaria-causing parasite Plasmodium falciparum to humans.