File:1937 Smithsonian miscellaneous collections Snodgrass 1936 p24 Fig. 07.jpg
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English: Fig. 7.—Pycnogonida: position of the genital openings. A, Chaetonymphon spinosum, female, ventral view of body and bases of legs,with four pairs of gonopores (Gprs) on the second leg segments. B, same, baseof leg, anterior view, showing position of gonopore. C, same, mesal view ofgonopore. bl, leg-bearing body lobe; Chi, chelicera; Fm, femur; Gpr, Gprs, gonopore,gonopores; iL, first leg; 2L-5L, ambulatory legs; Mth, mouth; Pat, patella;Pdp, pedipalp; Prb, proboscis; i, 2, 3, three small proximal leg segments. The writer has been unable to find any information on the mode oforigin of the genital ducts in the Pycnogonida, but since the segmentof the genital openings is not fixed in the arthropods generally thereis no reason why a condition of multiple openings might not be asecondary development. It should be observed, furthermore, thatthe position of the pycnogonid gonopores on the second segments ofthe legs does not conform with that of the genital apertures in otherarthropods havi |
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| Source | https://www.flickr.com/photos/internetarchivebookimages/14783046745/ |
| Author | Internet Archive Book Images |
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14783046745. It was reviewed on 25 June 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-zero. |
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