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Glycyphagus Michaeli
''Glycyphagus'' is a genus of Astigmatina in the family Glycyphagidae. Description In adults of ''Glycyphagus'', the prodorsum lacks external vertical setae ''ve''. The internal vertical setae ''vi'' are long and barbed, and located posterior to the anterior margin of the propodosoma. The scapular setae ''si'' and ''se'' are arranged in a trapezoid or rectangle shape. In some species, there is a prodorsal sclerotization called a crista metopica. Some of the dorsal setae are long and heavily barbed. On the ventral side of the body, the subcapitulum has a distinct pattern of ventral ridges, and near the posterior margin of the body is the anus. The tibiae of the first two leg pairs have two ventral setae each. The tarsal claws are simple and small. Members of subgenus ''Lepidoglyphus'' have subtarsal scales on the legs. Females usually have a short external copulatory tube at the posterior end of the body. Males lack paranal suckers or tarsal suckers on the fourth leg pair. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astigmatina
Astigmatina is a clade of mites in the order Sarcoptiformes. Astigmata has been ranked as an order or suborder in the past, but was lowered to the unranked clade Astigmatina of the clade Desmonomatides (synonym Desmonomata) in the order. Astigmatina is now made up of the two groups Acaridia and Psoroptidia, which have been suborders of the order Astigmata in the past. Astigmatina contains about 10 superfamilies and 76 families under Acaridia and Psoroptidia. Description Astigmatan mites are usually soft-bodied and white to brownish in colour (rarely tan and well-sclerotised), and range from 0.15 to 2.00 mm in length. They lack stigmatal openings (thus the name of the clade), peritremes or prodorsal sensilla. The gnathosoma (mouthparts) is usually exposed. They have a pair of chelicerae that are 2-segmented and usually chelate-dentate in shape (whip-like in Histiostomatidae). Opisthosomal glands are present and usually well-developed. Some features vary depending on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
