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Stethopachys formosa, the orchid beetle or dendrobium beetle, is an Australian insect found in northern New South Wales, Northern Territory and Queensland. [2] They cannot survive in colder climates, and they do not appear in Southern states. [3] This insect feeds on the flowers and leaves of orchids, often causing damage to cultivated plants. [4]
Black rot on orchids is caused by Pythium and Phytophthora species. [1] Black rot targets a variety of orchids but Cattleya orchids are especially susceptible. [1] Pythium ultimum and Phytophthora cactorum are known to cause black rot in orchids. [1] Pythium ultimum is a pathogen that causes damping-off and root rot on plants. [2]
Septoria selenophomoides is a fungal plant pathogen infecting orchids. It causes leaf spots, starting with small yellowish lesions on the plant's leaves and darkening to brown or black. [1] [2] If the infection develops further, the leaves and fruit fall from the orchid and spread the infection. [2]
Ophrys insectifera, the fly orchid, is a species of orchid and the type species of the genus Ophrys. It is remarkable as an example of the use of sexually deceptive pollination and floral mimicry, as well as a highly selective and highly evolved plant–pollinator relationship.
Cryptostylis leptochila, commonly known as small tongue orchid, [2] is a species of orchid that is endemic to eastern Australia. It has one to a few broad leaves and up to fifteen green flowers with a dark red labellum that has a black stripe and rows of black dots either side of the stripe.
Drakaea is a genus of 10 species in the plant family Orchidaceae commonly known as hammer orchids.All ten species occur only in the south-west of Western Australia.Hammer orchids are characterised by an insectoid labellum that is attached to a narrow, hinged stem, which holds it aloft.
The flowering stems are typically 20–60 cm (7.9–23.6 in) tall, occasionally up to 75 cm (30 in). There are two large opposite basal leaves, 5–20 cm (2.0–7.9 in) long. A variable number of flowers is borne on the stems, usually more than 15 but less than 100. The flowers are small and yellowish-green in colour.
Fairyflies are very tiny insects, like most chalcidoid wasps, mostly ranging from 0.5 to 1.0 mm (0.020 to 0.039 in) long. They include the world's smallest known insect , with a body length of only 0.139 mm (0.0055 in), and the smallest known flying insect , only 0.15 mm (0.0059 in) long.