It is not necessary to travel to odd places or go to great expense in order to study a large variety of  living things in their normal habitats. I find many of the specimens which I use in teaching my science classes in my own yard. Of course different yards will have different species. Here is my collection from a Southern California, suburban yard.  Each of the species included here is one I have identified from my own yard.  However some of the photographs were taken other places, simply because that is where I was able to get the better shot.  I make no claim to expertise as a taxonomist, I just do my best.  If you think you have detected an error in classification, please include references with your correction so I can look it up.