Red Ribbon Thrips. They are considered a pest in crops such as mango and avocado . They are very small insects , rarely larger than 2 or 3 mm, with an elongated body, very active. They live in the aerial parts of the plant , generally on the underside of the leaves, flowers and stems , in the case of fruit trees. In the onion and garlicThey live at the base of leaves. They feed on the sap, which they extract through their sucking-scraping mouthparts. By breaking the cells, the sap oxidizes with the air, giving the affected part that burnt or toasted appearance. They also cause leaf wilting and sometimes leaf deformation.
Summary
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- 1 Other common names
- 1 English name
- 2 Distribution and importance
- 3 Morphology and biology
- 4 Symptoms and damage
- 5 natural enemies
- 6 Control measures
- 1 Mechanics
- 2 Biological
- 3 Chemicals
- 7 See also
- 8 external links
- 9Fuente
Other common names
Red -banded thrips , red -banded thrips .
Name in english
Redbanded thrips
Distribution and importance
It has a wide distribution in the national territory. High infestations of this insect can considerably reduce crop yields. In addition to the mango , it affects other crops such as: avocado , cotton , cocoa , coffee , mahogany and guava , among others.
Morphology and biology
It presents holometabolous metamorphosis. Throughout her life the female lays about 50 eggs, individually under the epidermis of the leaf.
The body of the larvae is yellow-orange, with the first bright red abdominal metameres forming a red ribbon characteristic of this species.
To the adult of St. red belt
Avocado leaf , affected by the Red Ribbon Thrips S. rubrocinctus
Adults are dark brown in color and measure 1 to 1.4 mm, with females being larger than males (the latter are not very numerous). They have two pairs of wings with the characteristic setae of thrips.
The eggs hatch after 10 to 12 days, the larval stage lasts 10 days, and the pupal stage lasts 2 to 3 days. The complete cycle from egg to adult lasts 23 to 25 days. The adult lives up to 25 days.
Symptoms and damage
It mainly attacks new leaves and young shoots, which can be totally destroyed. The trophic activity of the larvae and adults causes the development of chlorotic spots, malformations and their premature fall on the leaves. Furthermore, its attack is frequently associated with the appearance of sooty mold ( Capnodium sp ). In the inflorescences it causes discoloration of the panicles, burns and necrosis.
The appearance of brownish spots with drops of excretion is a typical characteristic of the presence of this thrips.
natural enemies
- Franklinothrips tenuicornis
- vespiformis
- Megaphragma caribea
- mymaripenne
- Orius thripoborus
Control measures
mechanical
- Use of yellow cardboard traps, 10 cm long and 5 cm wide, with glue to catch insects and also yellow traps with water.
biological
- Through the release of insects such as: Crysopa sp. .
- Fungal-based applications: Verticillium lecani, Paecilomyces fumosososeus , Entomophthora virulent .
- With the application of the Nematode: Heterohabditis sp.
chemicals
Applications with: Carbaryl, endosulfan, methyl parathion.
