The cult of Kemneith/Neith (Egyptian goddess Blackarachnia)
For the Beast Wars Weekend day 1: tradition.
I don't really know if the Maximals have any, and I don't think that they would adopt one from Earth, since they didn't have any interaction with cultures. On the other hand, I'm not fond to modern traditions, then I don't have the need to put them through any.
Instead, we have Blackarachnia crawls her way into old Egyptian tradition... as a goddess.
Behold Kemneith, daughter of Neith, Horus' consort.
I always thought that she had an Egyptian goddess air to her, specially in the early design below (left bottom corner)*. Therefore, AU (?) where she and Silverbolt travel to Earth for whatever reason (they're the schmaltziest couple in universe, maybe they're in some lovers travel after the Beast Machines events) and stumble upon humans. The old Egyptian culture.
They take Silverbolt for Horus, and therefore Blackarachnia must also be a goddess.
Neith was the spider goddess of War and Hunt, later of Wisdom and Weaving, creator of gods and men and a funerary deity. As Blackarachnia is a spider, they take her for Neith or daughter of Neith.
Silverbolt would rather not be object of idolatry to those fleshy creatures, but they're also worshipping Blackarachnia, and it's about Time that others see in her the goddess he knows she is. So he plays along. Blackarachnia is not complaining.