👉 The term "myctophidae" is a genus of insects in the order Coleoptera, which includes many species that are closely related to the common black widow spider (Biston marina). These spiders have a distinctive pattern on their thorax and abdomen that resembles a myctophus, or spider-like structure. Myctophidae spiders can be found throughout much of North America, including in forests, grasslands, and fields.