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
Vērmane Garden foliis variegatis, Robinia pseudoacacia (Black locust), Magnolia obovata (Japanese bigleaf magnolia), Magnolia yulan (Lily tree), Bignonia catalpa (Herb linn), Pterocarya caucasica (Caucasian wingnut), Prunus laurocerasus (Cherry laurel), Aucuba japonica (Spotted laurel), Buxus sempervirens (European box), Buxus arborescens (Boxwood tree), Ilex aquifolium (European holly), Ilex laurifolia, Berberis aquifolium (Oregon grape), Rhododendron catawbiense, Yucca flamentosa (Adam's needle yucca), Hedera helix (Common ivy). Vērmane Garden Vērmane Garden (, ) is the oldest public garden in the city of Riga, Latvia, and currently comprises an area of approximately . The current name is a Latvian transliteration of the garden's original German name. Vērmane Garden