In harvestmen example internal fertilization takes place. In other arachnids, the male gathers his sperm in packets that are received by females in different ways. A spider can store up to 3,000 eggs at a time.
This amazing portrait is of a rare Spanish jumping spider Saitis Barbipes. Jumping spider is 5mm big and this is very extreme close up. The colours are real. This is probably the only jumping spider which has the very blue metalic eyes like you can see on the photo.