摘要
本文报道了发现于贵州的远盲属和腔蚓属蚯蚓三个新种,即雅致远盲蚓Amyntas eleganus sp.nov,大突远盲蚓Amynthas megapapillatus sp.nov.和贵州腔蚓Metaphire guizhouense sp.nov.前两个新种的模式标本采于贵州省梵净山,后一个新种的模式标本采于贵州省雷公山。
1. Amynthas eleganus sp. nov. (figs. 1-3) Length 75-123mm, diameter 3.5-4.0mm, segments 81-107 (holotype: 123mm long, 4.0mm wide, 101 segs.) Prostomium 1/3 epilobous. Clitellum red-brown, with setae on ventral side. Setae fine , their numbers: 22-34/Ⅲ, 33-42/Ⅴ, 32-46/ⅤⅢ, 42-48/ⅩⅩ, 42-50/ⅩⅩⅤ; 16-19(Ⅷ) between spermathecal pores and 7-10(ⅩⅧ) between male pores [holotype: 22/Ⅲ, 33/Ⅴ, 32/Ⅷ, 45/ⅩⅩ, 49/ⅩⅩⅤ; 16(Ⅷ); 8 (ⅤⅧ)]. Male pores on ventro-lateral sides of ⅩⅧ, each on a small round papilla, other three genital papillae close to porophore. Spermathecal pores one pair in 7/8, about 4/9 of circumference ventrally apart. There are two pairs of papillae on ventral side of Ⅹ and Ⅺ or four pairs on Ⅸ-Ⅻ. Septa 8/9 and 9/10 lacking, rather thin. Caeca compound, with 5-9 long finger-shaped pounches on ventral side, in ⅩⅩⅦ-ⅩⅦ. Testis sacs two pairs in Ⅹ and Ⅺ, communicated. Seminal vesicles in Ⅺ and Ⅻ, well developed. Prostate glands large in ⅩⅦ-ⅩⅩ. There are a group of small accessory glands in this region, each with a small stalk. Spermathecae in Ⅷ, ampulla heart-shaped. Diverticullum longer than the main part, terminal half part twisted. Having accessory glands in this region. Holotype and 5 paratypes were collected from Mt. Fanjin (27°49'N, 108°46'E), Guizhou, China in June 1, 1985 and May 28-31, 1985. The new species is similar to Amynthas palmosa (Chen 1946), but differs from the latter by the following characters: (1) Male pore on a smll papilla with other three papillae close to it; (2) Caeca compound, but not in palmate; (3) Diverticullum longer than the main part, terminal half part in weak or closed zigzag fashion; (4) Accessory glands well developed, each with a small stalk. 2. Amynthas megapapillatus sp. nov. (figs. Ⅰ-4-8) Length 84-167mm, diameter 3.5-4.0mm, segments 76-103 (holotype: 167mm long, 4.0mm wide, 103 segs.). Prostomium 1/3 epilobous. First dorsal pore in 12/13. Clitellum in ⅩⅣ-ⅩⅥ, without setae on it. Setae fine, their numbers: 34-36/Ⅲ, 32-42/Ⅴ, 42-46/Ⅷ, 48-54/ⅩⅩ, 43-52/ⅩⅩⅤ; 10-14(Ⅷ) between spermathecal pores and 9-12(ⅩⅧ) between male pores [holotype: 34/Ⅲ, 32/Ⅴ, 42/Ⅷ, 54/ⅩⅩ, 52/ⅩⅩⅤ; 14(Ⅷ); 12 (ⅩⅧ)]. Male pores on the ventro-lateral sides of ⅩⅧ, each on the lateral part of a large papilla which extends to 3/4 ⅩⅦ and 1/4 ⅪⅩ, about 2/5 of circumference ventrally apart. Spermathecal pores one pair in 7/8, about 3/8 of circumference ventrally apart. Septa 8/9 and 9/10 lacking, rather thin. Caeca compound in ⅩⅩⅦⅩⅩⅡ, with 8-9 finger-shaped pounches on the ventral side. Testis sacs two pairs in Ⅹ and Ⅺ, communicated. Seminal vesicles well developed. Prostate glands very large. Accessory glands in ⅩⅦ-ⅪⅩ, sessile. Spermathecae one pair in Ⅷ-Ⅹ, ampulla long sac-shaped, about 8mm long. Diverticullum short and small, about 1/6 of the main part. Holotype and 4 paratypes were collected from Mt. Fanjin (27°49′N, 108°46′E), Guizhou, China in May 26-30, 1985. The new species is similar to Amynthas palmosa (Chen 1946), but differs from the latter by the following characters: (1) Male pore on the lateral part of a very large papilla which extends to 3/4 ⅩⅦ and 1/4 ⅪⅩ; (2) Caeca compound, not in palmate, with 8-9 long finger-shaped pounches on the ventral side. 3. Metaphire guizhouense sp. nov. (figs. 9-12) Large-sized worm. Length 132-282mm, diameter 6-8mm, segments 98-145 (holotype: 238mm long, 7mm wide, 126 segs.). Prostomium 1/3 epilobous. Clitellum brown, without setae on it. Setae enlarged with equal distribution. Their numbers: 34-42/Ⅲ, 40-54/Ⅴ, 50-62/Ⅷ, 60-72/ⅩⅩ, 66-72/ⅩⅩⅤ; 24-29(Ⅷ) between spermathecal pores and 6-10(ⅩⅧ) between male pores [holotype: 37/Ⅲ, 48/Ⅴ, 60/Ⅷ, 66/ⅩⅩ, 70/ⅩⅩⅤ; 28(Ⅷ); 8(ⅩⅧ)]. Male pores about 1/3 of circumference ventrally apart, each situated in a large and deep copulatory pounch which is on the ventro-lateral sides of ⅩⅧ. There are 2-3 papillae close to each pore ventrally in the pounch. In some specimens the copulatory pounch is in version. Sper- mathecal pores two pairs in 7/8 and 8/9. Septa 8/9 present, thin, 9/10 absent. Caeca simple. Testis sacs in Ⅹ and Ⅺ, communicated. Seminal vesicles large, in Ⅺ and Ⅻ. Prostate glands developed, in ⅩⅥ-ⅩⅪ. Spermathecal ampulla heart-shaped, large, about 7-8mm long. Diverticullum slightly shorter than the main part, terminal half or 2/3 part in 'Z'-shape twisted. Accessory glands sessile. Holotype and 9 paratypes were collected from Mt. Leigong (26°23′N, 108°14′E), Leishan County, Guizhou, China in May 10, 1988. The new species is similar to Metaphire leonoris (Chen 1946), but differs from the latter by the present of septa 8/9 and the rather large body and the shape of the copulatory pounch. All the type specimens are deposited in Institute of Biology, Guizhou Academy of Sciences.
出处
《贵州科学》
1991年第3期220-223,T001,共5页
Guizhou Science
关键词
寡毛纲
巨蚓科
雅致远盲蚓
腔蚓属
Oligochaeta
Megascolecidae
Amynthas Metaphire
new species
Guizhou
