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Dog flea (Блоха собачья)

Dog flea

Dog flea (lat.Ctenocephalides canis) - a flea species from the family Pulicidae (Archaeopsyllinae). It is ubiquitous. A dangerous parasite of dogs, cats, rodents, humans and other animals, bites can cause ktenocephalosis. The carrier of flatworms is Dipylidium caninum (Linnaeus, 1758) (dipylidiosis), trypanosomes of Leptomonas ctenocephali (Fantham) Woodcock, 1914 and other parasitic organisms. They can also store plague pathogens, leprosy sticks, rat rickettsiosis and Marseilles fever.

Description

Body length - from 0.75 to 5 mm, in females with eggs, the length can reach 16 mm. Adult fleas feed on blood (the oral apparatus of the piercing-sucking type), develop in the hair of animals or in the litter, the larvae feed on plant residues, feces. Development occurs year-round, one generation develops under normal conditions in 25 days, the total life expectancy of up to 1.5 years.

The body is flattened from the sides and covered with numerous backward-directed hairs, setae and ridges of flat teeth. The forehead is steep in both females and males. Hind legs hopping. Between the middle and apical spurs, at least two thick setae are located on the posterior edge of the hind tibia. The proboscis is short. At least three bristles are located on the metepistern. Small eggs (up to 0.5 mm) in white. Larvae are vermiform (up to 5 mm), eyeless, consist of 13 segments (ten abdominal and three pectoral), molt three times. Pupae are brown, motionless. A close view of the cat flea (Ctenocephalides felis; imago) is distinguished by the following features: a short proboscis, a flat forehead (especially in females), in the male, the handle of the sexual claw weakly expands to the front end, with relatively small stigmas of abdominal tergites. The timing of the development of the various stages of canine fleas depends on external conditions. Under optimal conditions (temperature from +18 to + 24 ° С and humidity over 60%) they can live from 3 months to 1.5 years: an egg (develops from 3 to 14 days), a larva (from 12 to 142 days), pupae can survive adverse conditions for up to a year (from 10 to 354 days), adults (up to 1.5 years). The species was first described in 1826 by the British entomologist John Curtis (1791-1862).