. Des parasites animaux et la maladie humaine. Les insectes vecteurs ; parasites ; les maladies parasitaires ; parasitologie médicale ; insectes en tant que porteurs de la maladie. Mouches-STABLE 505 l'énoncé que les mouches domestiques fréquents parfois mordre. Ils diffèrent, cependant, de plusieurs façons. L'exclusion aérienne stable est plus robuste, Browner en couleur, appartient aux ailes déployées à un angle plus large, et a une vision étroite, a fait shining-black proboscis (Fig. 240) qui est très différent de la woodsie proboscis charnue de la mouche domestique. Les pièces buccales (Fig. 240) diffèrent de celles de beaucoup d'autres mouches piqueuses en ce que la lèvre inférieure, ce qui habituellement seulement pour

• Contributeur: Library Book Collection / Alamy Banque D'Images
• ID de l’image: RN4MB3
• Taille du fichier: 7,1 MB (225,9 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1606 x 1556 px | 27,2 x 26,3 cm | 10,7 x 10,4 inches | 150dpi

Informations supplémentaires

Cette image appartient au domaine public, ce qui signifie que le droit d’auteur a expiré ou que le titulaire du droit d’auteur a renoncé à ses droits. Les frais facturés par Alamy couvrent l’accès à la copie haute résolution de l’image.

Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

. Animal parasites and human disease. Insect Vectors; Parasites; Parasitic Diseases; Medical parasitology; Insects as carriers of disease. STABLE-FLIES 505 the frequent statement that houseflies sometimes bite. They differ, however, in several ways. The stable-fly is more robust, browner in color, rests with the wings spread at a broader angle, and has a narrow, pointed shining-black proboscis (Fig. 240) which is quite different from the blunt fleshy proboscis of the housefly. The mouthparts (Fig. 240) differ from those of many other biting flies in that the lower lip, which usually merely forms a sheath for the piercing mouthparts, is itself a piercing organ. It is bent at nearly right angles under the head so that it projects straight forward, being, therefore, fixed to the head like a bayonet to a rifle. The short basal segment is movable and mus- cular, and is used to manipulate the proboscis itself. The latter has at ^T^'-hyp. its tip rasplike spines which aid in ^abef, - .. , -, , . /» j.i t- j. Fig. 240. Head and mouthparts perforating the Skin Of the host. of stable-fly, Stomoxys calcitrans; Inside the groove in the lower lip is ant., antenna; ar., arista of an- , 111 ii i i . i tenna; ep., epipharynx; hyp., hypo- the labrum and hypopharynx which pharynx; lab., labium;label., label- together form a Sucking tube. The torn; max. p., maxillary palpus. M1 i . i . i » i . (After Herms.) maxillary palpi, which iorm enclosing sheaths for the proboscis in tsetse flies, are less than half the length of the proboscis in Stomoxys. The stable-fly is commonly believed to breed in manure, and gains its name from the frequency with which it is found about stables, presumably having been bred in manure. As a matter of fact, the presence of stable-flies about stables is due to the presence there of animals — horses, cattle, etc., — on which they feed. The breeding place which is most preferred is moist, decaying straw or rotting vegetable matter. According to Herms, the v

Recherche dans la banque de photos par tags

• bookcentury1900
• bookdecade1910
• booksubjectparasites
• bookyear19