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|original_description_author=Omodeo
 
|original_description_author=Omodeo
 
|original_description_year=1987
 
|original_description_year=1987
|synonym_01=Pelodrilus carnivorus
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|synonym_01=Metataxis carnivorus
|synonym_reference_01=nomen nudum, Omodeo, 1958
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|synonym_reference_01=Omodeo, 1987: 9; Non ''Haplotaxis carnivorus'' Omodeo, 1958: 9.
|short_description=Body slender, slightly prismatic. Adult specimens are 56 and 58 mm long and 0.8 mm thick (1 mm at the cilitellum). Segments without evident secondary annulation to about 120. No cutaneous pigment, body wall transparent. Prostomium zygolobous, semicircular. No dorsal pores; nephridial pores perhaps on the lateral line. Male and females pores not perceptible by external inspection, but paired at 11/12 and 12/13 respectively, near the setal line ab. Three spermathecal pores along the middle dorsal line at 6/7, 7/8, 8/9. Two pairs of ventral setae on all segments (peristomium excepted), the dorsal setae disappear from XL onward.
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|external_characteristics=Body slender, slightly prismatic. Adult specimens are 56 and 58 mm long and 0.8 mm thick (1 mm at the cilitellum). Segments without evident secondary annulation to about 120. No cutaneous pigment, body wall transparent. Prostomium zygolobous, semicircular. No dorsal pores. Nephridial pores maybe on the lateral line. Male and females pores not perceptible externally, but paired at 11/12 and 12/13 respectively, near the setal line ab. Three spermathecal pores along the middle dorsal line at 6/7, 7/8, 8/9. Two pairs of ventral setae on all segments (peristomium excepted), the dorsal setae disappear from segment 40 onward.
Internal morphology: No gizzard, no typhlosole, no calciferous glands; septal glands in IV, V. Septa thin, the anterior ones funnel-shaped. Circulatory apparatus greatly developed in the cephalic segments; in each segment from I to XIII there are paired convoluted transverse commissures connecting the dorsal and the ventral vessel. These commissures are similar to those of ''[[Haplotaxis villiersi]]'' but their form is altered by the extrusion of the pharynx; in the following segments commissures are straight. Holonephridia begin in XVI or XVII, covered by vesicular peritoneal cells. The setae ab of XI-XV are implanted in small glandular pads. There is a single pair of testes situated in the fore part of XI and a single pair of seminal vesicles derived from XI-XII, which penetrates the ovarian sacs, filling them almost completely. Ciliated seminiferous funnels are situated in the ventral lip of sperm sacs. There is a single pair of ovaries in the front part of XIII followed by a pair of long ovarian sacs derived from XIII-XIV. The left ovarian sac in the dissected adult specimen reaches XXVI, and the right one reaches XXX. The bigger ovarian eggs measure about 250 x 170 x 100 um, the eggs contained in the bottom of ovarian sacs, rich in yolk, are spherical with a diameter of 350 um and are yellow in color. Female funnels were not observed. In a young specimen there was a pair of rudimentary gonads (ovotestis ?) in XII. The unpaired spermathecal pores open in 6/7 - 8/9 along the dorso-median line: the duct is short with thin walls, the ampulla is pyriform, transversely enlarged. The anterior spermatheca is bilobed and smaller, the posterior is bigger, they no longer contain sperms, in adult specimens.
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|internal_characteristics=No gizzard, no typhlosole, no calciferous glands. Septal glands in 4, 5. Septa thin, the anterior ones funnel-shaped. Holonephridia begin in 16 or 17, covered by vesicular peritoneal cells. The setae ab of 11-15 are implanted in small glandular pads. There is a single pair of testes situated in the fore part of 11 and a single pair of seminal vesicles derived from 11-12, which penetrates the ovarian sacs, filling them almost completely. Ciliated seminiferous funnels are situated in the ventral lip of sperm sacs. There is a single pair of ovaries in the front part of 13 followed by a pair of long ovarian sacs derived from 13-14. Left ovarian sacs reach 26-30. Unpaired spermathecal pores open in 6/7-8/9 along the dorso-median line. Ampulla pyriform. Anterior spermatheca bilobed and smaller. The posterior one is bigger.
 
|climate_01=Tropical
 
|climate_01=Tropical
 
}}
 
}}

Latest revision as of 19:07, 13 May 2016

General data Thematic references Distribution references
Metataxis carnivorus   (Omodeo, 1987)
Taxonomy
Family: Haplotaxidae     Genus: Metataxis
Synonyms: Metataxis carnivorus Omodeo, 1987: 9; Non Haplotaxis carnivorus Omodeo, 1958: 9.
Short description
External characteristics
Body slender, slightly prismatic. Adult specimens are 56 and 58 mm long and 0.8 mm thick (1 mm at the cilitellum). Segments without evident secondary annulation to about 120. No cutaneous pigment, body wall transparent. Prostomium zygolobous, semicircular. No dorsal pores. Nephridial pores maybe on the lateral line. Male and females pores not perceptible externally, but paired at 11/12 and 12/13 respectively, near the setal line ab. Three spermathecal pores along the middle dorsal line at 6/7, 7/8, 8/9. Two pairs of ventral setae on all segments (peristomium excepted), the dorsal setae disappear from segment 40 onward.
Internal characteristics
No gizzard, no typhlosole, no calciferous glands. Septal glands in 4, 5. Septa thin, the anterior ones funnel-shaped. Holonephridia begin in 16 or 17, covered by vesicular peritoneal cells. The setae ab of 11-15 are implanted in small glandular pads. There is a single pair of testes situated in the fore part of 11 and a single pair of seminal vesicles derived from 11-12, which penetrates the ovarian sacs, filling them almost completely. Ciliated seminiferous funnels are situated in the ventral lip of sperm sacs. There is a single pair of ovaries in the front part of 13 followed by a pair of long ovarian sacs derived from 13-14. Left ovarian sacs reach 26-30. Unpaired spermathecal pores open in 6/7-8/9 along the dorso-median line. Ampulla pyriform. Anterior spermatheca bilobed and smaller. The posterior one is bigger.
Distribution
Geographical origin: N/A
Distribution status: N/A
Present in: Guinea, Imprecise locations,
► See also distribution references
Biology-Ecology
Ecological category: N/A
Climatic zone: Tropical
Habitat: N/A
Micro-habitat: N/A

General data Thematic references Distribution references