The Acarina Or Mites: A Review of the Group for the Use of Economic Entomologists |
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Page 9
... groove above , called the vomer . The hypostome is usually not visible except by dissec- tion , but in the ticks it is very large and roughened with sharp teeth . Sometimes the basal joints of the palpi unite to form a lip or labium ...
... groove above , called the vomer . The hypostome is usually not visible except by dissec- tion , but in the ticks it is very large and roughened with sharp teeth . Sometimes the basal joints of the palpi unite to form a lip or labium ...
Page 19
... groove ; adults free .. Tarsi not enlarged ; no dorsal groove . .ANYSTIDE . .ERYTHRÆIDÆ . 5 5. Phytophagous , occurring on plants ; often spinning threads ; palpi simple ; leg I never ending in long hairs ; all legs with claws ...
... groove ; adults free .. Tarsi not enlarged ; no dorsal groove . .ANYSTIDE . .ERYTHRÆIDÆ . 5 5. Phytophagous , occurring on plants ; often spinning threads ; palpi simple ; leg I never ending in long hairs ; all legs with claws ...
Page 38
... groove or crista . It is usually enlarged at the posterior end , sometimes in the middle , and FIG . 53.- Neophyllobius americanus and tarsal claw . ( Author's illustration . ) also at the anterior end , where it often includes 38 ...
... groove or crista . It is usually enlarged at the posterior end , sometimes in the middle , and FIG . 53.- Neophyllobius americanus and tarsal claw . ( Author's illustration . ) also at the anterior end , where it often includes 38 ...
Page 39
... groove ; ƒ , tarsus . ( Author's illustration . ) • FIG . 55. - Atomus maculatus . ( Author's illustration . ) genus ( Smaris ) there are also two eyes close together near the middle of the anterior margin . The palpi are prominent ...
... groove ; ƒ , tarsus . ( Author's illustration . ) • FIG . 55. - Atomus maculatus . ( Author's illustration . ) genus ( Smaris ) there are also two eyes close together near the middle of the anterior margin . The palpi are prominent ...
Page 40
... groove is sometimes swollen in the middle . In Erythraeus the mandibles are retractile , there are but four eyes , and the palpi are five - jointed . We have many species of this genus , and several of them are common FIG . 57 ...
... groove is sometimes swollen in the middle . In Erythraeus the mandibles are retractile , there are but four eyes , and the palpi are five - jointed . We have many species of this genus , and several of them are common FIG . 57 ...
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Common terms and phrases
abdomen acarians Acarina adult anal plate animal anus attached Author's illustration Banks fig Bdella beak beetles Berlese birds body capitulum caroncle cattle cephalothorax cephalothorax and abdomen chelate chitinous claws color common commonly coxæ Crista described disease dorsal shield dorsum eggs elongate enlarged erineum Eriophyes Europe eyes feed female forms front furrow galls genera genital genital aperture genital opening genus glands groove groups hairs hind legs host Hypopus hypostome infested insects Ixodes joint of leg joint of palpus known Koch Laelaps lamellæ larva larvæ last joint leaves male mammals mandibles median Mégnin molt moss mouth nymph nymphal Oribatidæ Original Oudemans pair of legs palpi palpus parasitic Parasitidæ pedicellate peritreme posterior rostrum scale insects separated short side skin slender sometimes species occur spines spiracles stage sternal plate stout suckers surface tarsi tarsus Tetranychus ticks Trombidium Trouessart Tyroglyphus Uropoda usually venter ventral shield vulva