危害云杉的卷蛾三新种

THREE NEW SPECIES OF TORTRICIDS ON PICEA

青海云杉是甘肃省祁连山林区的主要树种,曾遭受多种害虫侵害,经作者研究发现其中有卷蛾三新种,本文对它们进行比较详尽的新种记述。

In Mt. Qilinn District, Gansu Province, pure and mixed forests are made up by the peculiar tree, Picea crassifolia, which are mainly distributed in the north-west of China. There are many unknown serious pests on this tree, among which, three new species of tortricids have been described in this paper.All the specimens, including the types of new species are kept in the Institute of Zoology, Academia Sinica.1.Archips crassifolianus Liu, sp. nov.Forewing: Male 9~10mm, female 8-11 mm long; 3~4 mm wide. Labial palpus 1.5 times longer than diameter of the eye. Dorsal of head, thorax yellowish brown, abdomen lighter. Ground color of forewing pale yellowish brown; basal patch, median fascia and subapical blotch of male dark ochreous brown; female with reddish brown reticulation or strigulation. Costal fold of male narrow. Hindwing: male greyish brown; female pale yellow. Male genitalia: uncus and arm of gnathos long and slender; transtilla like a twisted transverse band; sacculus broad, near the end provided with a tumour-like protuberance. Aedeagus slender and long, slightly curved, hooked terminally; with 2 lancet-shaped cornuti. Female genitalia: Papilla analis stout, right angle shaped; ostium and antrum make up funnelshaped; only half portion of ductus bursae near bursae copulatrix with cestum; single signum large.Holotype( ): Gansu Province (Wuwei, Mt. Qilian, 16.VI.1987, Yu Jihe). Allotype( ): Gansu Province (Wuwei, Mt. Qilian, 24.VI.1986, He Changn-ian). Paratypes (2 ,2 ): Gansu Province (Wuwei, Mt. Qilian, VI. 1987, Yu Jihe & He Changnian).This species is closely allied to A. oporanus, A. similis with antigeny, but differs from the latter in forewing pattern with brown color; sacculus of male genitalia broad and near the end with a tumour-like protuberance; ostium and antrum make up a funnel-shaped part in female genitalia.2.Pandemis piceacola Liu, sp. nov.Forewing: Male 8mm, female 10mm long; male 3mm, female 4mm wide. Labial palpus 2 times longer than diameter of the eye. Antenna and head greyish brown, without incisure of pedicellus. Forewing rectangular, costa strongly curved basally. Thorax and forewing orange brown, without basal patch, median fascia and subapical blotch. Hindwing dark greyish brown, with paler fringes. Male genitalia: Uncus broad, rectangular; socii elongate, drooping; transtilla with broad, lateral process; valve round; base of sacculus triangular, elongated terminally; ncdeagus extremely straight in apical 2/3, with 2 cornuti. Female genitalia: Papilla analis long, anterior and posterior apophysis equal in length; funnel-shaped part of stcrigma narrow; antrum distinct; single signum short, capitulum and sclerite well developed.Holotype( ): Gansu Province (Gulang, Mt. Changling, 5.VII.1981, Yu Jihe). Allotype( ): Gansu Province (Wuwei, Mt. Qilian, 20 .VI.1987, He Changnian). Paratype. locality, date and collector same as allotype.Differences between this species and the other species of this genus are: forewing without any pattern, costal fold absent; antenna without incisure of pedicellus; base of sacculus triangular in male genitalia. 3. Paracroesia picevora Liu, sp. nov.Forewing: 6.5mm long, 2.0mm wide. Eyes black. Labial pulpus 1.6 times longer than diameter of the eye. Head and antenna greyish brown, thorax yellowish brown. Forewing pale yellowish brown, with dark yellow, brown, black and white blotch. Hindwing greyish brown with paler fringes. Male genitalia: Tegumen broad; socii well developed; tuba anal is very broad, membranous, except thin median stripe; transtilla long and slender; valve short, base broad, with crescent shaped ampulla; sacculus sclerotized, expanded terminally with numerous spines; cucullus prolonged, tongue-like, membranous. Aedeagus short, stout, pointed terminally, with 2 cornuti. Female genitalia: Papilla analis stout; anterior and posterior apophysis equal in length; ductus bursae slightly sclerotized; single signum plate-shaped, folded longitudinally.Holotype: Gansu Province (Tianzhu, 28.VI.1988, Yu Jihe). Allotype : Gansu Province (Tianzhu, 30.VI.1988, He Cha