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2. Scale insect - Wikipedia

   en.wikipedia.org/wiki/Scale_insect

   a) underside of scale showing female and eggs, x24 b) scale upperside, x24 c) female scales on twig d) male scale, x12 e) male scales on twig. Female scale insects in more advanced families develop from the egg through a first instar (crawler) stage and a second instar stage before becoming adult. In more primitive families there is an ...

3. Pollination trap - Wikipedia

   en.wikipedia.org/wiki/Pollination_trap

   Orchids in the genus Pterostylis have been found to attract male fungus gnats with chemical attractants and then trap them using a mobile petal lip. [2] The general observation of insects being trapped and aiding pollination were made as early as 1872 by Thomas Frederic Cheeseman [ 3 ] and did not go unnoticed by Charles Darwin who examined the ...

4. Black rot on orchids - Wikipedia

   en.wikipedia.org/wiki/Black_rot_on_orchids

   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]

5. Why Are Your Orchid Flowers Falling Off Too Soon? 3 Causes ...

   www.aol.com/why-orchid-flowers-falling-off...

   Insects and plant diseases can weaken your orchid and cause it to drop buds and blooms prematurely. Mealybugs are the primary pest that feeds on orchids, Kondrat says. They suck the sap from the ...

6. How to (Finally!) Get Rid of Gnats In Your Plants - AOL

   www.aol.com/lifestyle/finally-rid-gnats-plants...

   Give these pesky bugs the boot. For premium support please call: 800-290-4726 more ways to reach us

7. Coccus hesperidum - Wikipedia

   en.wikipedia.org/wiki/Coccus_hesperidum

   The brown soft scale does not normally kill the host plant, but the loss of sap probably causes it to grow more slowly and crop less heavily. The main disadvantage to the host is the sooty mould which grows on the honeydew. This reduces the area of leaf available for photosynthesis, and spoils the appearance of the plant, its flowers and fruits ...

8. Cercospora - Wikipedia

   en.wikipedia.org/wiki/Cercospora

   Cercospora is a genus of ascomycete fungi. Most species have no known sexual stage, and when the sexual stage is identified, it is in the genus Mycosphaerella. [2] Most species of this genus cause plant diseases, and form leaf spots.

9. Eriosomatinae - Wikipedia

   en.wikipedia.org/wiki/Eriosomatinae

   Woolly aphids generally are not much cause for alarm, although they can cause rather unsightly damage to plants, which is particularly a problem for growers of ornamental plants. Symptoms caused by their feeding on a plant include twisted and curled leaves, yellowed foliage, poor plant growth, low plant vigor, and branch dieback. [citation needed]