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
English landscape garden English landscape garden The English landscape garden, also called English landscape park or simply the English garden (, , , , ), is a style of "landscape" garden which emerged in England in the early 18th century, and spread across Europe, replacing the more formal, symmetrical "jardin à la française" of the 17th century as the principal gardening style of Europe. The English garden presented an idealized view of nature. It drew inspiration from paintings of landscapes by Claude Lorraine and Nicolas Poussin, and from the classic Chinese gardens of the East, which had recently been described by European travellers