You're right - spiders don't have a proboscis, which is a broad term for a single elongated feeding structure (might have multiple parts though). In this case, the appendages are a pair, with each chelicera having a fang at the end. I've seen these spiders eat midges, which is probably why they hang around certain buildings with lights left on at night.

The famous herbivorous Bagheera is a different species (kiplingi), not found in our area. It is very specialized at feeding on the Beltian bodies of an acacia.