Showing papers by "Sichuan University published in 1979"
07 Dec 1979
TL;DR: The earthworm fauna of Mt. Omei had been investigated by Gates (1935),and Chen (1931, 1936, 1946), and in the spring of 1963, a survey and collected a number of species, of which three are considered as new to science.
Abstract: The earthworm fauna of Mt Omei had been investigated by Gates (1935),and Chen (1931, 1936, 1946) In the spring of 1963, we made another survey andcollected a number of species, of which three are considered as new to science Typespecimens are deposited in the Department of Biology, Sichuan University1 Pheretima exilens Zhong et Ma, sp nov Type 68mm long, 35mm wide, 97 segments 1/2 epilobus 1st dorsal pore in12/13 Color greyish in formalin Clitellum entire, with setae ventrally Setae fine and close, evenly distributed, 50/III, 64/VII, 64/IX, 54/XX, 11 be-tween pores Male pores on ventro-lateral side of xviii, each on flat-topped papilla and a si-milar one nearby, also on xvii and xiv postsetally in line vith pore (fig 1A)Spermathecal pores 4 pairs, intersegmental in 5/6--8/9, a pair of papillae postsetalon VIII Septa 8/9, 9/10 absent Caeca simple Testis sacs all small and widely placedSeminal vesicle elongate, 15 mm with dorsal lobe Prostates rarely developed, con-fined in xviii, xix, if present Accessory glands racemose with short ductule Sper-mathecae all vestigial (fig 1 B) except in one case where the crooked seminal cham-ber is present (fig 1 C) Type: A31 (2a); Apr 21, 1963; Mt Omei Remarks The present species is similar to Ph exilis in the shape of diverticu-lum and the arrangemeat of papillae, but may be distinguished from the latter bythe presence of four pairs of spermathecal pores on 5/6--8/9 (Ph exilis has only twopairs on 5/6--6/7) 2 Pheretima contingens Zhong et Ma, sp nov Type 64mm long, 3mm wide, segments 89 Prostomium 1/2 epilobous 1st dor-sal pore in 11/12 Color greyish dorsally Clitellum with setal pits only Setae fine, close, even on anterior ventrum, 50/V, 56/VII, 58/IX, 55/XX; for-mula: 22(VI), 24(VII), 14(XVIII) Male pores on ventro-lateral side of xviii, each on a round porophore closely con-nected before and behind with a pear-shaped gland-pad (fig 2A) Spermathecalpores 3 pairs, intersegmental in 6/7---8/9, ca half of body circumference No papil-la Speta 8/9, 9/10 absent Caeca palmate with 6--7 pointed pouches directed dor-sally, ventral 3 longest Testis sacs small, ventral, each pair close but not communicated Spermathecalampulla ovoid, diverticulum shorter than main pouch with a round seminal chamber(fig 2B) Type: A9 (4a); April 18, 1936; Mt Omei Remarks It is similar to Ph szechuancnsis, but setae on anterior ventrum fineand close, seminal chamber round, and size smaller3 Pheretima daulis Zhong et Ma, sp nov Body 49--93 mm long, 25--35 mm wide, 61--105 segments (type: 75, 33, 87)Prostomium 1/2 epilobous 1st dorsal pore in 4/5, occasionally in 11/12 or 12/13Color light brownish No setae on clitellum Setae fine, close, even on anterior ventrum, 34/40/V, 36-48/VII, 40-44/XX;formula: 22--26(VII), 11--14(XVIII) [type: 38/V, 42/VI, 44/XX; 22 (VI), 24(VIII), 13 (XVIII)] Male pores each on round or ellipsoid tubercle at ventro-lateral side of xviii,two gland-pads placed in front and behind of the porophore A pair of papillaepostsetally on xvii (fig, 3A) Spermathecal pores 3 pairs, intersegmental in 6/7-8/9, ca 1/2 of body circumference apart Septa: 8/9 thin, 9/10 absent Caeca with 4-5 small finger-shaped pouches onposterior dorsal half (fig 3B) Testis-sace as transverse bands, anterior pair slightly V-shaped Seminal vesicleslarge, rough on surface, no dorsal lobe; Prostate and accessory glands as usual Sper-mathecal ampulla ca 2mm long, diverticullum shorter, with ental club-shaped cham-ber (fig 3C) Type: A71 (3a); 2 May, 1963; Mt Omei Remarks It is similar in many respects to Ph szechuanensis, but differs fromthe latter by its first dorsal pore in 4/5, two gland-pads in front of and behind poro-phore, and also in the shape of the caeca
4 citations