黒島のアブに寄生する Erythraeidae の 1 新種について

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In September, 1952, K. Kitahara collected two larvae of Erythraeidae which lived on the horse-fly in Kuroshima, Kagoshima Prefecture, Japan and he described them in 1953. The authors made a cross examination and corrected the errors. Leptus kuroshimaensis n. sp. Description of Larva (Type) : (The value of various measuring described formerly in 1953). Colour in life red. Body ovoid. Dorsal scutum pentagonal; its anterior margin and its posterior point slightly concave. Anterior part of shield is not thin and carries the slender sensillary setae which is finely ciliated on the terminal 1/3; the posterior sensillary setae which is finely ciliated on the terminal half arise at the posterior angle of the shield; 2 pairs of non-sensillary setae, slightly club-liked in shape, short and stiffly ciliated. Eye : 1+1, on a level with the posterior end of the shield. The forms of 60 dorsal setae are similar with scutal non-sensillary ones. Venter : a pair of setae, with many ciliations, between coxae I, II and III, respectively; between coxae II and III a pair of setae. Ventral surface has not urstigmen and anus. Gnathosoma : the terminal half of mandible is very narrow, its tip with very small claw; gnathosomal dorsal surface without galea-setae; hypostom has a pair of anterior very short spine-like setae and a pair of posterior long non-ciliated setae; palpal femur, genu, tibia, tarsus with 1, 1, 3, 8 setae, respectively; palpal claw strong and simple (no accessory teeth). Legs long and thin, with 7 segments : each coxa with one seta, slightly tapering. Each trochanter with one seta. Tarsi long; empodium falciform and simple, most long and thin, overreaching the lateral claws; anterior claw fairly strong, falciform, without ciliations; posterior claw fairly strong, with slightly curved shaft, tapering, with a number of ventral ciliations. Tarsi I and II with one spur on the dorsum, respectively. Tarsus I, tibia I, genu I, tarsus II, tibia II, genu II, tarsus III, tibia III provided with 2, 2, 1, 1, 2, 1 1, 1, non-ciliated simple setae, respectively. Discussion : a) This species very resembles to genus Achorolophus Oudemans, but is easily distinguished from followings : (1) by the galea of the latter dorsally with setae, (2) the hypostom of the latter with a pair of setae except for Ach. lomani (but Ach. lomani with triangular scutum, its posterior angle pointed) and (3) in what the latter has a anus. b) This species also looks like Leptus anomalus Southcott but is easily distinguished from the latter in the following character : (1) the dorsal scutum pentagonal, its anterior part being not thin and more concave than the latter. (2) between coxae II are only a pair of satae. (3) anterior hypostomal setae non-ciliated, spine-like. (4) gnathosoma without galea-setae. (5) palpal genu has only one seta. (6) posterior claw has only ventral ciliations, without dorsal ones. c) Leptus kyushuensis Ishii which seems almost equal to this species differs considerably from followings : (1) in having the wide branched terminal to the posterior claw, (2) 7 setae to the palpal tarsus and (3) in what all tarsal setae are ciliated except for one spur.
日本衛生動物学会の論文
1958-08-10

黒島のアブに寄生する Erythraeidae の 1 新種について

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