"Daddy-longlegs" means harvestman (not a spider), crane fly (an insect) or pholcid spider, depending on who's talking! So it's really meaningless.
Orb (spiral) spider webs are neither the most common type nor the "normal" or standard type of web.
The color differences in Van Dyke's Salamander might be associated to different levels of elevation and temperature.
All spiders make silk but only about half make a web (silk structure to catch prey); others hunt or wait for prey.
Larch Mountain Salamander are found in southern Washington in the Cascade Mountains, and the Columbia river gorge area up to Snoqualmie pass.
All arachnids, not just spiders, have four pairs of legs.
"Arachnid" doesn't just mean spider. The 11 arachnid orders include scorpions, ticks, etc.; spiders are just 1 order of class Arachnida.
The Dunn's Salamander is most often found under rocks in wet shaded areas on the edges of streams in forests.
Ensatina Salamanders are found west of the Cascade Mountains to the coast in Washington state.
The coast giant salamanders are only found in the Pacific Northwest, most commonly near clear, cold mountain streams next to forests.
Cope's Giant Salamanders usually mature and reproduce in the almost entirely in their aquatic form without metamorphosing into terrestrial adults.