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Downy mildew (class Oomycetes: family Peronosporaceae) Peronospora sparsa – Peronospora causes purple-red to dark-brown spots with irregular margins on the leaves, however, often angular. Stems, petioles and flower stalks can split and spotted with purple marks. Buds, sepals, petals and calyces can be affected and will present purple spots ...
Image based on museum specimen of Athyma ranga. Upperside: Male velvety black, female very dark brown, suffused with bluish in certain lights. Forewing: A medial anterior and a preapical larger whitish spot in cell; posteriorly in the cell, beyond its apex and below it at base of interspace 1, some dull obscure blue spots; a discal series of white spots, three elongate placed obliquely from ...
Dark claret brown, two round chrome-yellow spots on each segment, with scattered smaller bluish-white spots between, clustering into and forming a conspicuous line along the sides; legs and ventral surface purplish black, the tentacula, placed as usual on the 3rd and 12th segments, claret brown. The plants that host Parantica aglea larva ...
Common spot on strawberry is a polycyclic disease, and under favorable conditions it will continue to reinfect the host and surrounding plants. The fungus overwinters as mycelium, sclerotia, and perithecia in infected leaf tissues. This disease on strawberry can generate two types of spores that infect newly emerging leaves in the spring ...
Phidippus audax, the Bold jumper or Daring jumping spider, is a common species of spider belonging to the genus Phidippus, a group of jumping spiders easily identified by their large eyes and their iridescent chelicerae. [1] [2] Like all jumping spiders, they have excellent stereoscopic vision that aids them in stalking prey and facilitates ...
Leaf spot. A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides. These discoloured spots or lesions often have a centre of necrosis (cell death). [ 1] Symptoms can overlap across causal ...
Leucocoprinus birnbaumii, commonly known as the flower pot parasol, yellow parasol, [ 2] flowerpot parasol, or plantpot dapperling, is a species of gilled mushroom in the family Agaricaceae. It is common in the tropics and subtropics. However, in temperate regions, it frequently occurs in greenhouses and flowerpots, hence its common names of ...
The body color is grayish brown to blackish and is marked with yellowish stripes. [2] On the head, it has light yellow spots: a rectangular one behind each eye, an oval under each eye, and a round one on each side of the jaw. In some specimens, the spot behind and the spot under the eye can combine to form a single thick "C" stain.