Pear psylla

layer. Life cycle and appearance of Pear psylla Adults pear psyllas are 2-3 mm long and orange red to blackish. They have white, longitudinal stripes on [...] forewings are clear with dark veins. The eggs are oval, approximately 0.3 mm long and yellowish orange in colour. The nymphs are initially yellowish with

Crane flies

45-50 mm across. They have long, spindly legs and one pair of narrow, clear wings with clearly visible veins. Eggs are black in colour, oval, 1mm long and

Southern European marshland pyralid

the stem or stalk close to the ground. The pinkish red eggs are about 0.5 mm in diameter and become steadily darker. Just before hatching, which occurs [...] larva is visible within the egg. The full-grown caterpillars are 20 to 30 mm long and have a creamy white colour. Along the dorsal surface of the body [...] becoming darker as the adult gets closer to emergence, and measures 9 to 12 mm.

Yellow rose aphid

black dorsal markings. The size of wingless adults is 1.2-2.5 mm, winged specimens are 1.4-2.2. mm

Glasshouse potato aphid

of the greenhouse potato aphid is rather squat, of medium size (1.8 - 3.0 mm long) and oval in shape. It has a light yellow-green to brown-green colour [...] transverse bands. The body shape is similar to wingless females, but is 2.0-3.0 mm long. The glasshouse potato aphid manifests both anholocyclic (no eggs are

Cotton aphid

1.8 mm long) are usually dark green to black, while aphids produced in overcrowded colonies at a high temperature can be much smaller (from 0.9 mm), and

Oak processionary moth

grey forewings with white and darker grey markings and a wingspan of ca. 30 mm. The adults emerge and fly between the end of July and mid September. The [...] starts producing thousands of very small, barbed urticating hairs (ca. 0.1 mm). These hairs contain an allergenic protein, thaumetopoein; which can be actively

Vine mealybug

is smaller (1 mm), dark orange in color with long tail filaments and transparent wings and has no mouthparts. The female is larger (3 mm) and voluminous

Cottony cushion scale

wax. The adult ‘females’ are easily recognized by their large size (up to 10 mm long), red-brown body colour and covering of granular, white wax. The legs [...] the same length as the body, giving an overall combined length of up to 20 mm. The 'females' are actually hermaphrodites with fertilization occurring between

Encarsia formosa

offers the best chance of successful development. The egg is 0.08 mm long and 0.03 mm wide. About halfway through the parasitoid’s development, the host [...] frees itself from its case. The female parasitic wasp is approximately 0.6 mm long, with a head that is dark brown to black in colour, a dark brown to black