Spider are apparently absent. In some species, the exocuticle of the legs and prosoma is modified by a tanning process, resulting in brown coloration. Bilins are found, for example, in "Micrommata virescens", resulting in its green color. Guanine is responsible for the white markings of the European garden spider "Araneus diadematus". It is in many species accumulated in specialized cells called guanocytes. In genera such as "Tetragnatha", "Leucauge", "Argyrodes" or "Theridiosoma", guanine creates their silvery appearance. While guanine is originally an end-product of protein metabolism, its excretion can be blocked in spiders, leading to an increase in its storage. Structural colors
Golshan Garden is always permanent running water flowing. Many fruit trees on this eight-acre monument had created unique nature. Various species of plants in the garden with different weather climates, like plants for certain cold regions alongside the palms which grow only in tropical areas can be found there. At center point of this garden, there is a pond where is habitat of two pelicans and these birds are very familiar with visitors which this attitude is one of features of this garden. The age of this garden dates back to Zand and Qajar eras. This garden has been constructed by order