262:
198:
214:
475:
32:
230:
246:
24:
676:
382:
364:
99:
129:. 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
78:
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
133:, 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
187:), 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
54:. 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
123:. 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
83:, 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.
261:
172:. 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
414:
197:
516:
168:. 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
630:
213:
474:
511:
229:
245:
464:
407:
35:
The internal anatomy of a spider, with the reproductive system (purple) reaching the exoskeleton at the epigyne
705:
204:
55:
454:
125:
160:, where there is developed an appendage which is usually soft and flexible, and which is termed the
145:, where the lateral expansions often conceal the openings of the spermathecae, as in the epigyne of
700:
439:
400:
386:
220:
449:
348:
236:
63:
59:
679:
338:
330:
31:
23:
191:. Each of these projections may be grooved on the side facing the oviduct, forming a tube.
640:
609:
483:
459:
444:
274:
252:
147:
119:
661:
526:
17:
694:
625:
549:
534:
506:
501:
491:
368:
352:
343:
16:
This article is about the
Epigynum in spiders. For use of Epigynous in botany, see
635:
599:
589:
579:
544:
431:
180:
179:
A still more complicated form of epigyne is found in some of the sheet weavers (
80:
656:
559:
554:
496:
87:
604:
564:
539:
184:
141:
381:
321:
Chamberlin, R. V. (1904). "Notes on
Generic Characters in the Lycosidae".
594:
584:
135:
75:
574:
334:
268:
156:
98:
423:
51:
154:
A more complicated form of epigyne is found in spiders of the genus
30:
22:
367:
This article incorporates text from this source, which is in the
74:
The primary function of the epigyne is to receive and direct the
396:
392:
27:
The external anatomy of a spider, with the epigyne labeled
58:
located on the underside of the abdomen, in front of the
117:
An example of a comparatively simple epigyne is that of
649:
618:
525:
482:
430:
310:. Doubleday, Page & Company. pp. 129–132.
139:, but more markedly so in that of many species of
408:
86:A secondary function of the epigyne is as an
8:
50:is the external genital structure of female
39:External genital structure of female spiders
415:
401:
393:
301:
299:
297:
295:
293:
291:
342:
97:
287:
193:
102:Three different types of epigyne: (a)
7:
14:
675:
674:
473:
380:
362:
260:
244:
228:
212:
196:
306:Comstock, John Henry (1920) .
1:
512:List of families of spiders
722:
15:
670:
471:
517:Lists of spider species
344:2027/hvd.32044107169518
329:(5): 145–148, 173–178.
205:Paraphidippus aurantius
371:: The Spider Book
114:
36:
28:
323:Canadian Entomologist
101:
34:
26:
389:at Wikimedia Commons
126:Trabeops aurantiacus
108:Trabeops aurantiacus
631:Cultural depictions
221:Hakka himeshimensis
183:) and orb weavers (
94:Differences in form
335:10.4039/Ent36145-5
115:
37:
29:
688:
687:
619:Human interaction
385:Media related to
237:Colonus puerperus
64:epigastric plates
60:epigastric furrow
713:
678:
677:
477:
417:
410:
403:
394:
384:
366:
365:
357:
356:
346:
318:
312:
311:
303:
264:
248:
232:
216:
200:
62:and between the
721:
720:
716:
715:
714:
712:
711:
710:
691:
690:
689:
684:
666:
662:Web decorations
645:
641:Spider fighting
614:
610:Urticating hair
560:Cheliceral fang
521:
478:
469:
426:
421:
377:
363:
360:
320:
319:
315:
308:The Spider Book
305:
304:
289:
285:
278:
275:Isopeda villosa
265:
256:
253:Hentzia chekika
249:
240:
233:
224:
217:
208:
201:
148:Geolycosa pikei
120:Pirata montanus
112:Geolycosa pikei
104:Pirata montanus
96:
72:
40:
21:
12:
11:
5:
719:
717:
709:
708:
706:Spider anatomy
703:
693:
692:
686:
685:
683:
682:
671:
668:
667:
665:
664:
659:
653:
651:
647:
646:
644:
643:
638:
633:
628:
622:
620:
616:
615:
613:
612:
607:
602:
597:
592:
587:
582:
577:
572:
567:
562:
557:
552:
547:
542:
537:
531:
529:
523:
522:
520:
519:
514:
509:
504:
499:
494:
488:
486:
480:
479:
472:
470:
468:
467:
462:
460:Classification
457:
452:
447:
442:
436:
434:
428:
427:
422:
420:
419:
412:
405:
397:
391:
390:
376:
375:External links
373:
359:
358:
313:
286:
284:
281:
280:
279:
272:sp., probably
266:
259:
257:
250:
243:
241:
234:
227:
225:
218:
211:
209:
202:
195:
95:
92:
71:
68:
38:
18:Ovary (botany)
13:
10:
9:
6:
4:
3:
2:
718:
707:
704:
702:
699:
698:
696:
681:
673:
672:
669:
663:
660:
658:
655:
654:
652:
648:
642:
639:
637:
634:
632:
629:
627:
626:Arachnophobia
624:
623:
621:
617:
611:
608:
606:
603:
601:
598:
596:
593:
591:
588:
586:
583:
581:
578:
576:
573:
571:
568:
566:
563:
561:
558:
556:
553:
551:
550:Cephalothorax
548:
546:
543:
541:
538:
536:
535:Arthropod leg
533:
532:
530:
528:
524:
518:
515:
513:
510:
508:
507:Opisthothelae
505:
503:
502:Mygalomorphae
500:
498:
495:
493:
492:Araneomorphae
490:
489:
487:
485:
481:
476:
466:
463:
461:
458:
456:
453:
451:
448:
446:
443:
441:
438:
437:
435:
433:
429:
425:
418:
413:
411:
406:
404:
399:
398:
395:
388:
383:
379:
378:
374:
372:
370:
369:public domain
354:
350:
345:
340:
336:
332:
328:
324:
317:
314:
309:
302:
300:
298:
296:
294:
292:
288:
282:
277:
276:
271:
270:
263:
258:
255:
254:
247:
242:
239:
238:
231:
226:
223:
222:
215:
210:
207:
206:
199:
194:
192:
190:
186:
182:
177:
175:
171:
167:
163:
159:
158:
152:
150:
149:
144:
143:
138:
137:
132:
128:
127:
122:
121:
113:
109:
105:
100:
93:
91:
89:
84:
82:
77:
69:
67:
65:
61:
57:
53:
49:
45:
33:
25:
19:
569:
361:
326:
322:
316:
307:
273:
267:
251:
235:
219:
203:
188:
178:
173:
169:
165:
161:
155:
153:
146:
140:
134:
130:
124:
118:
116:
111:
107:
103:
85:
81:spermathecae
76:palpal organ
73:
47:
43:
41:
636:Spider bite
590:Palpal bulb
580:Opisthosoma
545:Calamistrum
450:Cannibalism
432:Arachnology
181:Linyphiidae
56:exoskeleton
701:Sex organs
695:Categories
657:Spider web
555:Chelicerae
497:Mesothelae
440:Ballooning
283:References
166:ovipositor
88:ovipositor
605:Spinneret
565:Cribellum
540:Book lung
455:Evolution
185:Araneidae
142:Geolycosa
70:Functions
680:Category
595:Scopulae
585:Pedipalp
484:Taxonomy
465:Glossary
445:Behavior
353:86615684
174:atriolum
170:cochlear
136:Trabeops
48:epigynum
575:Exuviae
570:Epigyne
527:Anatomy
424:Spiders
387:Epigyne
269:Isopeda
189:parmula
157:Araneus
52:spiders
44:epigyne
351:
110:, (c)
106:, (b)
349:S2CID
162:scape
131:guide
650:Webs
600:Silk
42:The
339:hdl
331:doi
164:or
46:or
697::
347:.
337:.
327:36
325:.
290:^
176:.
151:.
90:.
66:.
416:e
409:t
402:v
355:.
341::
333::
20:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.