SN/T 1722-2006Methods for quarantine and identification of Hylurgus ligniperda Fabricius (English PDF)

3.1 Instrument

Solid anatomical mirrors, microscopes, shovel, scalpels, insect anatomical needles, forceps, petri dishes, slides, alcohol lamps, beakers, label paper, etc.

3.2 Reagents

75% ethanol.

4.1 Preparation

4.1.1 Changlin Xiaoyan is mainly parasitic on the base of the trunk of the tree or the thick bark. The tunnel is built in the innermost layer of the bark and the xylem.

Attention should be paid to collect the small mites found during the on-site inspection and to sample the symptoms of the mites.

4.1.2 For the necropsy of the symptoms of small mites, use a shovel, scalpel, tweezers and other tools to carefully remove the small mites.

4.1.3 Collect the collected adult mites and larvae in 75% ethanol for laboratory identification.

4.2 Morphological identification

4.2.1 Adult morphological characteristics

--- The two sides of the forehead are slightly different or have a moderate difference. female convex male and concave;

---The eye is complete, the vertical ellipse;

---The tentacles are slender, 4 to 7 knots, and the shape of the hammer is symmetrical, 4 knots;

---The front half of the front chest plate has no tumor teeth;

--- The forefoot two base joints are connected or separated;

--- The two base edges of the coleoptera are parallel double convex arcs;

--- Body hair is either all scales, or all hair or both.

--- The hair of the posterior thoracic side is hairy;

--- Tentacle whip section 6 knots, hammer-shaped cone, a total of 4 sections, of which the first section is half of the hammer-shaped minister;

--- The length-to-width ratio of the front chest plate is equal to 1 or slightly larger than 1; the cross at the front end of the front chest plate is not obvious;

--- The forefoot is connected to the two base nodes;