I get a lot of requests to identify specimens from photos. Emailing a photo of a pest sample rather than finding a container, catching it and bringing it into our office can save considerable time for our clients in the community. If you are able to send me a good photo accompanied by some details of the situation, it can save me considerable time too.
A good photo is one preferably in focus, one which includes some identifying characters of the pest. This can be as simple as the overall shape or as detailed as the presence or absence of wings, hairs, pits, segments or clubs on a specific body part. With spider identification, it is helpful to count the number of eyes and note the eye arrangement on the cephalothorax in order to positively identify the family.