【摘要】 <正> 1963年5—6月间在海南岛尖峯岭采得的绒额鳾,经对比研究后,认为是一个新亚种,取名为: 尖峯绒额鳾Sitta frontalis chienfengensis,新亚种 模式标本 正模标本(登记号码43264)与副模标本(登记号码43267)均为雄性成鸟,由丁文宁、王子玉等同志在尖峯岭(海拔750—800米),分别于1963年5月29日和6月7日采得,现收藏于北京中国科学院动物研究所鸟类标本室。更多还原

【Abstract】 In a zoological expedition to Hainan during May and June, 1963, a number of thevelvet-fronted Nuthatches (Sitta frontalis) were collected from Chien-feng-ling (尖峯岭).They are considered as belonging to a new subspecies, which we propose to name as: Sitta frontalis chienfangensis, subsp. nov. Types Holotype (registry number: 43264) and paratype (registry number: 43267),both adult males, collected at Chien-feng-ling (alt. 750--800 m), Hainan, on May 29 andJune 7, 1963 respectively, by Tng Wen-ning and Wang Tze-yu. Diagnosis Differing from Sitta frontalis solangiae of northern Vietnam in havingthe upperparts more greyish-blue, the underparts also much paler in colour, the culmenlonger, the blackish tip of the upper bill more conspicuous (occupying about one-thirdof the total length of the bill), and the white terminal spots of the rectrices less developed,being mostly confined to the outermost 3 pairs. In S. f. solangiae, the culmen shorter(measuring only 13 mm), and the upper bill only slightly tipped with black; the whitespots of the rectrices better developed, appearing on all of the lateral rectrices (5 pairs). S. f. fortior of southern Vietnam distinguishable in having the underparts suffusedwith violet and in being larger in size, with the wings measuring 83 mm in length. The Philippine forms (S. f. oenochlamys and other subspecies) separable by a narrowwhite loral band and by a white spot at the base of the lower mandible; S. f. oenochlamysfurther distinguished by its deep vinaceous rufous underparts. S. f. frontalis from the southern part of Yunnan, China, readily distinguishable fromthe present subspecies by the bill being red in fresh specimens, the culmen shorter(10 13--14 mm, generally under 14 mm), and the upperparts purplish-blue insteadof greyish-blue of this subspecies. Description of Type (Adult male): Forehead, lore, supercilium, and upper cheekvelvet-black; the remaining upperparts including exposed parts of wings greyish-blue, thecrown and hind neck suffused with purplish, and the interscapular region tinged withlilac-rufous; primary coverts black, externally edged with greyish-blue; primaries blackwith a concealed white spot at the base; 3rd to 5th primaries externally edged with sky-blue at the middle part, the other primaries further inwards slightly edged with greyish-blue near the tip of the outer web; secondaries also black, edged along the entire outeredge with greyish-blue; tertiaries almost entirely greyish-blue; central rectrices same asback; outer rectrices mostly black, with the tips turned greyish; the black portion exter-nally edged with greyish-blue or with grey, as in the case of the ultimate pair; the greytips of the outer 3 pairs of rectrices spotted with white along the edge of the inner web,the white spot decreasing in size from the outermost rectrices inwards. Ear coverts and sides of neck lilac-rufous; lower cheek, chin, and throat white; underparts below breastfulvous-rufous, somewhat deepening posteriorly; under-coverts of wings black; axillariesrufous-white. The female differs in having no black supercilium and cheeks! Iris yellow-brown; bill yellow, tip of the upper bill turned blackish-brown; tarsusgrey-brown. * Measurements are in mm, and weight in g. Discussion The velvet-fronted nuthatch (Sitta frontalis) has apparently two types:red-billed and yellow-billed. The red-billed forms are S. f. frontalis (Ceylon, India,Pakistan, Burma, Thailand, S. Yunnan in China, Sumatra and Java in Indonesia), ?S. f.saturatior (S. Malay Pena.), S. f. corallipes (Borneo), and S. f. palawana (Palawan inPhilippines), while the yellow-billed forms include S. f. solangiae (N. Vietnam), S. f. fortior(S. Vietnam), S. f. chienfengensis (Hainan, China), S. f. oenochlamys (Philippines: Gui-maras, lowlands of Luzon, Panay), S. f. mesoleuca (highlands of Luzon, Philippines), andS. f. lilacea (Philippines: Basilan, Leyte, Samar, Mandanao). Subspecies reported fromthe highlands of Mindanao (S. f. apo), Negros (S. f. insignis), and Cebu (S. f. cebuensis)are doubtedly distinct from S. f. lilacea (Delacour a更多还原