Knowledge (XXG)

Epigyne

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273: 209: 225: 486: 43: 241: 257: 35: 687: 393: 375: 110: 140:. In this species, the plate is depressed or furrowed longitudinally, and the depressed area is divided by a ridge-like elevation, which divides the depression into two furrows or channels, each of which leads to the opening of the spermatheca of the corresponding side. This ridge-like elevation is called the 89:
of the male during copulation. The various specific forms of epigynes are correlated, in each case, with corresponding specific differences in the palpus of the male. This specialization prevents individuals of different species from mating. The epigyne covers or accompanies the openings of the
144:, as its function "seems clearly to be that of a guide to the male embolus, controlling the course of the latter and facilitating its entrance to the spermatheca." In many cases the guide extends laterally on each side at its posterior end. This is true to a slight extent in the epigyne of 198:), where the ovipositor consists of two finger-like projections: first, the more common one, the scape, which arises from the atriolum, and consequently in front of the opening of the oviduct; and second, one which arises behind the opening of the oviduct; this is termed the 65:. As the epigyne varies greatly in form in different species, even in closely related ones, it often provides the most distinctive characteristic for recognizing species. It consists of a small, hardened portion of the 134:. It consists of a nearly plain plate, with the openings of the spermathacae near the posterior lateral corners. A somewhat more complicated form is illustrated by the epigyne of 94:, which are pouches for receiving and retaining sperm. Frequently, the openings of the spermathecae are on the outer face of the epigyne and can be easily seen. 272: 183:. The basal plate of the epigyne which bears the scape, and which forms a porch or hood that covers the opening of the oviduct is called the 425: 208: 527: 179:. When there is a well-developed scape, the tip of it is usually more or less spoon-shaped. This part of the scape is termed the 641: 224: 485: 522: 240: 256: 475: 418: 46:
The internal anatomy of a spider, with the reproductive system (purple) reaching the exoskeleton at the epigyne
716: 215: 66: 465: 136: 171:, where there is developed an appendage which is usually soft and flexible, and which is termed the 156:, where the lateral expansions often conceal the openings of the spermathecae, as in the epigyne of 711: 450: 411: 397: 231: 460: 359: 247: 74: 70: 690: 349: 341: 42: 34: 202:. Each of these projections may be grooved on the side facing the oviduct, forming a tube. 651: 620: 494: 470: 455: 285: 263: 158: 130: 672: 537: 28: 705: 636: 560: 545: 517: 512: 502: 379: 363: 354: 27:
This article is about the Epigynum in spiders. For use of Epigynous in botany, see
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A still more complicated form of epigyne is found in some of the sheet weavers (
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Chamberlin, R. V. (1904). "Notes on Generic Characters in the Lycosidae".
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A more complicated form of epigyne is found in spiders of the genus
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This article incorporates text from this source, which is in the
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The primary function of the epigyne is to receive and direct the
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The external anatomy of a spider, with the epigyne labeled
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located on the underside of the abdomen, in front of the
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An example of a comparatively simple epigyne is that of
660: 629: 536: 493: 441: 321:. Doubleday, Page & Company. pp. 129–132. 150:, but more markedly so in that of many species of 419: 97:A secondary function of the epigyne is as an 8: 61:is the external genital structure of female 50:External genital structure of female spiders 426: 412: 404: 312: 310: 308: 306: 304: 302: 353: 108: 298: 204: 113:Three different types of epigyne: (a) 7: 25: 686: 685: 484: 391: 373: 271: 255: 239: 223: 207: 317:Comstock, John Henry (1920) . 1: 523:List of families of spiders 733: 26: 681: 482: 528:Lists of spider species 355:2027/hvd.32044107169518 340:(5): 145–148, 173–178. 216:Paraphidippus aurantius 382:: The Spider Book 125: 47: 39: 334:Canadian Entomologist 112: 45: 37: 400:at Wikimedia Commons 137:Trabeops aurantiacus 119:Trabeops aurantiacus 642:Cultural depictions 232:Hakka himeshimensis 194:) and orb weavers ( 105:Differences in form 346:10.4039/Ent36145-5 126: 48: 40: 699: 698: 630:Human interaction 396:Media related to 248:Colonus puerperus 75:epigastric plates 71:epigastric furrow 18:Epigynum (spider) 16:(Redirected from 724: 689: 688: 488: 428: 421: 414: 405: 395: 377: 376: 368: 367: 357: 329: 323: 322: 314: 275: 259: 243: 227: 211: 73:and between the 21: 732: 731: 727: 726: 725: 723: 722: 721: 702: 701: 700: 695: 677: 673:Web decorations 656: 652:Spider fighting 625: 621:Urticating hair 571:Cheliceral fang 532: 489: 480: 437: 432: 388: 374: 371: 331: 330: 326: 319:The Spider Book 316: 315: 300: 296: 289: 286:Isopeda villosa 276: 267: 264:Hentzia chekika 260: 251: 244: 235: 228: 219: 212: 159:Geolycosa pikei 131:Pirata montanus 123:Geolycosa pikei 115:Pirata montanus 107: 83: 51: 32: 23: 22: 15: 12: 11: 5: 730: 728: 720: 719: 717:Spider anatomy 714: 704: 703: 697: 696: 694: 693: 682: 679: 678: 676: 675: 670: 664: 662: 658: 657: 655: 654: 649: 644: 639: 633: 631: 627: 626: 624: 623: 618: 613: 608: 603: 598: 593: 588: 583: 578: 573: 568: 563: 558: 553: 548: 542: 540: 534: 533: 531: 530: 525: 520: 515: 510: 505: 499: 497: 491: 490: 483: 481: 479: 478: 473: 471:Classification 468: 463: 458: 453: 447: 445: 439: 438: 433: 431: 430: 423: 416: 408: 402: 401: 387: 386:External links 384: 370: 369: 324: 297: 295: 292: 291: 290: 283:sp., probably 277: 270: 268: 261: 254: 252: 245: 238: 236: 229: 222: 220: 213: 206: 106: 103: 82: 79: 49: 29:Ovary (botany) 24: 14: 13: 10: 9: 6: 4: 3: 2: 729: 718: 715: 713: 710: 709: 707: 692: 684: 683: 680: 674: 671: 669: 666: 665: 663: 659: 653: 650: 648: 645: 643: 640: 638: 637:Arachnophobia 635: 634: 632: 628: 622: 619: 617: 614: 612: 609: 607: 604: 602: 599: 597: 594: 592: 589: 587: 584: 582: 579: 577: 574: 572: 569: 567: 564: 562: 561:Cephalothorax 559: 557: 554: 552: 549: 547: 546:Arthropod leg 544: 543: 541: 539: 535: 529: 526: 524: 521: 519: 518:Opisthothelae 516: 514: 513:Mygalomorphae 511: 509: 506: 504: 503:Araneomorphae 501: 500: 498: 496: 492: 487: 477: 474: 472: 469: 467: 464: 462: 459: 457: 454: 452: 449: 448: 446: 444: 440: 436: 429: 424: 422: 417: 415: 410: 409: 406: 399: 394: 390: 389: 385: 383: 381: 380:public domain 365: 361: 356: 351: 347: 343: 339: 335: 328: 325: 320: 313: 311: 309: 307: 305: 303: 299: 293: 288: 287: 282: 281: 274: 269: 266: 265: 258: 253: 250: 249: 242: 237: 234: 233: 226: 221: 218: 217: 210: 205: 203: 201: 197: 193: 188: 186: 182: 178: 174: 170: 169: 163: 161: 160: 155: 154: 149: 148: 143: 139: 138: 133: 132: 124: 120: 116: 111: 104: 102: 100: 95: 93: 88: 80: 78: 76: 72: 68: 64: 60: 56: 44: 36: 30: 19: 580: 372: 337: 333: 327: 318: 284: 278: 262: 246: 230: 214: 199: 189: 184: 180: 176: 172: 166: 164: 157: 151: 145: 141: 135: 129: 127: 122: 118: 114: 96: 92:spermathecae 87:palpal organ 84: 58: 54: 52: 647:Spider bite 601:Palpal bulb 591:Opisthosoma 556:Calamistrum 461:Cannibalism 443:Arachnology 192:Linyphiidae 67:exoskeleton 712:Sex organs 706:Categories 668:Spider web 566:Chelicerae 508:Mesothelae 451:Ballooning 294:References 177:ovipositor 99:ovipositor 616:Spinneret 576:Cribellum 551:Book lung 466:Evolution 196:Araneidae 153:Geolycosa 81:Functions 691:Category 606:Scopulae 596:Pedipalp 495:Taxonomy 476:Glossary 456:Behavior 364:86615684 185:atriolum 181:cochlear 147:Trabeops 59:epigynum 586:Exuviae 581:Epigyne 538:Anatomy 435:Spiders 398:Epigyne 280:Isopeda 200:parmula 168:Araneus 63:spiders 55:epigyne 362:  121:, (c) 117:, (b) 360:S2CID 173:scape 142:guide 661:Webs 611:Silk 53:The 350:hdl 342:doi 175:or 57:or 708:: 358:. 348:. 338:36 336:. 301:^ 187:. 162:. 101:. 77:. 427:e 420:t 413:v 366:. 352:: 344:: 31:. 20:)

Index

Epigynum (spider)
Ovary (botany)


spiders
exoskeleton
epigastric furrow
epigastric plates
palpal organ
spermathecae
ovipositor

Pirata montanus
Trabeops aurantiacus
Trabeops
Geolycosa
Geolycosa pikei
Araneus
Linyphiidae
Araneidae
Paraphidippus aurantius
Paraphidippus aurantius
Hakka himeshimensis
Hakka himeshimensis
Colonus puerperus
Colonus puerperus
Hentzia chekika
Hentzia chekika
Isopeda sp., probably Isopeda villosa
Isopeda

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