|
''Yersinella raymondi'' is a species of 'katydids crickets' belonging to the family Tettigoniidae subfamily Tettigoniinae. The scientific name ''Yersinella'' comes from the name of the entomologist who has described the species in 1860. ==Description== It is rather small species, the adults grow up to long, while females reach a maximum of , including the relatively conspicuous curved ovipositor (about ). They can be encountered from July through September mainly on shrubs and on low herbaceous plants or soil, rather than in tall grasses. As a matter of fact they live in hilly and mountainous areas, in the margins of forests and woodlands, as well in open areas with plenty of vegetation. The basic coloration of the body is usually brown or gray-brown. On the sides of the body runs a broad, dark gray or dark brown band, while the top of the body is light gray-colored or light brown, with two longitudinal brown lines. The compound eyes are dark brown. Antennae are longer than the body. The pronotum is flattened and extended to the rear and its lateral margins are whitish or yellowish. The abdomen is long and thick. The legs are brown, have darker areas on their knees and short thin spines on the lower parts of all pairs. The cerci of the males are slightly flattened and have no inner tooth. Because of their small size and the barely visible wings often ''Yersinella raymondi'' is wrongly confused with a nymph of other grasshoppers, as well with ''Rhacocleis germanica'', but it can be easily distinguished by the mentioned flat ends of the cerci typical of males and by the clear stripe on its back, contrasting with the sides of the body. These crickets mainly feed on small invertebrates and on vegetable foods. Their nymphs are easily found in the litter. This species is a good index of the state of the forests, being quite sensitive to the environmental modifications. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yersinella raymondi」の詳細全文を読む スポンサード リンク
|