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Leafcutter ant

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355: 253: 155: 31: 367: 199:. Because colonies with multiple queens over the lifespan of the colony have been found by a large number of investigators – by Weber 1937, Jonkman 1977, Huber 1907, Moser & Lewis 1981, Mariconi & Zamith 1963, Moser 1963, and Walter et al 1938 – it is believable that some colonies have multiple foundresses – termed 320:. Leaf cutter ants are sensitive enough to adapt to the fungi's reaction to different plant material, apparently detecting chemical signals from the fungus. If a particular type of leaf is toxic to the fungus, the colony will no longer collect it. The only two other groups of insects to use fungus-based agriculture are 140:
Next to humans, leafcutter ants form some of the largest and most complex animal societies on Earth. In a few years, the central mound of their underground nests can grow to more than 30 m (98 ft) across, with smaller radiating mounds extending out to a radius of 80 m (260 ft),
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Once on the ground, the female loses her wings and searches for a suitable underground lair in which to found her colony. The success rate of these young queens is very low, and only 2.5% will go on to establish a long-lived colony. To start her own fungus garden, the queen stores bits of the
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species, unusually for the Attine tribe, have an external waste heap. Waste transporters take the waste, which consists of used substrate and discarded fungus, to the waste heap. Once dropped off at the refuse dump, the heap workers organise the waste and constantly shuffle it around to aid
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Minors are slightly larger than minim workers, and are present in large numbers in and around foraging columns. These ants are the first line of defense and continuously patrol the surrounding terrain and vigorously attack any enemies that threaten the foraging lines. Head width is around
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Majors, the largest worker ants, act as soldiers, defending the nest from intruders, although recent evidence indicates majors participate in other activities, such as clearing the main foraging trails of large debris and carrying bulky items back to the nest. The largest soldiers
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Benjamin, RICHARD K.; Blackwell, MEREDITH; Chapela, IGNACIO H.; Humber, RICHARD A.; Jones, KEVIN G.; Klepzig, KIER D.; Lichtwardt, ROBERT W.; Malloch, DAVID; Noda, HIROAKI (2004-01-01), Mueller, GREGORY M.; Bills, GERALD F.; Foster, MERCEDES S. (eds.),
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threatens the ants' food source and thus is a constant danger to the ants. The waste transporters and waste-heap workers are the older, more dispensable leafcutter ants, ensuring the healthier and younger ants can work on the fungal garden. The
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and other micro-organisms. The most common known behaviors rely on workers reducing the number of fungal spores by grooming, or removing an infected piece of the fungus garden and throwing it away at the waste dump (described as weeding).
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The fungi used by the higher attine ants no longer produce spores. These ants fully domesticated their fungal partner 15 million years ago, a process that took 30 million years to complete. Their fungi produce nutritious and swollen
328:. The fungus cultivated by the adults is used to feed the ant larvae, and the adult ants feed on leaf sap. The fungus needs the ants to stay alive, and the larvae need the fungus to stay alive, so mutualism is obligatory. 374:
Leafcutter ants have very specific roles in taking care of the fungal garden and dumping the refuse. Waste management is a key role for each colony's longevity. The necrotrophic parasitic fungus
111:. Leafcutter ants can carry twenty times their body weight and cut and process fresh vegetation (leaves, flowers, and grasses) to serve as the nutritional substrate for their fungal cultivates. 1309:
Farji-Brener, Alejandro G. (2001). "Why are leaf-cutting ants more common in early secondary forests than in old-growth tropical forests? An evaluation of the palatable forage hypothesis".
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In some parts of their range, leafcutter ants can be a serious agricultural pest, defoliating crops and damaging roads and farmland with their nest-making activities. For example, some
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ants have four pairs and a rough exoskeleton. The exoskeleton itself is covered in a thin layer of mineral coating, composed of rhombohedral crystals that are generated by the ants.
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on crops has been demonstrated. Collecting the refuse from the nest and placing it over seedlings or around crops resulted in a deterrent effect over a period of 30 days.
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Goes, A. C.; Barcoto, M. O.; Kooij, P. W.; Bueno, O. C.; & Rodrigues, A. (2020), "How do leaf-cutting ants recognize antagonistic microbes in their fungal crops?",
1072: 592: 1207: 409:). This mutualistic micro-organism lives in the metapleural glands of the ant. Actinomycetota are responsible for producing the majority of the world's 1362:
Ballari, S. A. & Farji-Brener, A. G. (2006), "Refuse dumps of the leaf-cutting ants as a deterrent for ant herbivory: does refuse age matter?",
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species are capable of defoliating an entire citrus tree in less than 24 hours. A promising approach to deterring attacks of the leafcutter ant
676: 1401: 1253: 922: 830: 792: 759: 560: 237:, four castes being present in established colonies—minims, minors, mediae, and majors. Majors are also known as soldiers or dinergates. 1176: 1011:
Zhang, M. M.; Poulsen, M. & Currie, C. R. (2007), "Symbiont recognition of mutualistic bacteria by Acromyrmex leaf-cutting ants",
1129:"Pathogenicity of Escovopsis weberi: The parasite of the attine ant-microbe symbiosis directly consumes the ant-cultivated fungus" 266:
Minims are the smallest workers, and tend to the growing brood or care for the fungus gardens. Head width is less than 1 mm.
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that lay eggs into the crevices of the worker ants' heads. Often, a minim will sit on a worker ant and ward off any attack.
296:, and different species of ants use different species of fungus, but all of the fungi the ants use are members of the family 876: 195:
in her infrabuccal pocket, which is located within her oral cavity. Colonies are generally founded by individual queens –
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was cultured, during colony foundation, in 6.6% of colonies. However, in one- to two-year-old colonies, almost 60% had
1428: 599: 342: 354: 300:. The ants actively cultivate their fungus, feeding it with freshly cut plant material and keeping it free from 976:
Bot, A. N. M.; Currie, C. R.; Hart, A. G. & Boomsma, J. J. (2001), "Waste Management in Leaf-cutting Ants",
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In addition to feeding the fungal garden with foraged food, mainly consisting of leaves, it is protected from
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Currie, C. R.; Mueller, U. G. & Malloch, D. (1999), "The agricultural pathology of ant fungus gardens",
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ants have much in common anatomically; however, the two can be identified by their external differences.
108: 902: 1462: 506: 183:(Spanish). Each female mates with multiple males to collect the 300 million sperm she needs to set up a 1205:
Currie, C. R.; & Stuart, A. E. (2001), "Weeding and grooming of pathogens in agriculture by ants",
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partner, a bacterium that grows on the ants and secretes chemicals; essentially, the ants use portable
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Mediae are the generalized foragers, which cut leaves and bring the leaf fragments back to the nest.
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taking up 30 to 600 m (320 to 6,460 sq ft) and containing eight million individuals.
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Nevertheless, leafcutter ants have many adaptive mechanisms to recognize and control infections by
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Hart, A. G. & Ratnieks, F. L. W. (2002), "Waste management in the leaf-cutting ant
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When the ants are out collecting leaves, they are at risk of attack by some species of
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Li, Hongjie & Sun, Chang-yu (2020), "Biomineral armor in leaf-cutter ants",
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Proceedings of the National Academy of Sciences of the United States of America
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is the most commonly documented fungi farmed by higher attine ant species.
1025: 485: 325: 192: 92: 84: 340:) that grow in bundles called staphylae, to specifically feed the ants. 1269: 1152: 677:"Diagnoses of the North American: Ant Genera (Hymenoptera: Formicidae)" 55: 1442: 1340: 747:
Extraordinary Animals: An Encyclopedia of Curious and Unusual Animals
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Hager, Felix A.; Kirchner, Lea; Kirchner, Wolfgang H. (2017-12-15).
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was the dead ants placed around the perimeter of the waste heap.
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Fire Ants and Leaf-cutting Ants : Biology and Management
464:(substrate-borne vibrations) to communicate with each other. 551:
Speight, Martin R.; Watt, Allan D.; Hunter, Mark D. (1999).
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Also, the wrong type of fungus can grow during cultivation.
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Lofgren, Clifford; Meer, Robert K. Vander, eds. (2018).
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Winged females and males leave their respective nests
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concentrations than the shade-tolerant species that
808: 806: 804: 618:"Major evolutionary transitions in ant agriculture" 776: 909:, Burlington: Academic Press, pp. 395–433, 865:For Leaf-Cutter Ants, Farm Life Isn't So Simple 783:, The American Philosophical Society, pp.  460:Leafcutter ants use chemical communication and 903:"Insect- and Other Arthropod-Associated Fungi" 221:In leafcutter colonies, ants are divided into 312:relationship is further augmented by another 125:ants have three pairs of spines and a smooth 8: 1208:Proceedings of the Royal Society of London B 1127:Reynolds, H. T. & Currie, C. R. (2004), 163:, queen with larvae and workers on substrate 388:decomposition. A compelling observation of 1285: 1228: 1189: 1103: 1093: 1024: 960: 717: 707: 651: 641: 575: 573: 476:, likely due to higher concentrations of 145:The lifecycle of a leafcutter ant colony 543: 27:Any of 47 species of leaf-chewing ants 1443:The Lurker's Guide to Leafcutter Ants 1408:. Bristol Zoo Gardens. Archived from 1364:The Netherlands Entomological Society 854:Crop Domestication Is a Balancing Act 616:Schultz, T. R.; Brady, S. G. (2008). 579: 7: 1177:Frontiers in Ecology and Evolution 555:. Blackwell Science. p. 156. 25: 1333:10.1034/j.1600-0706.2001.920120.x 1376:10.1111/j.1570-8703.2006.00475.x 915:10.1016/b978-012509551-8/50021-0 399:by the antibiotic secretions of 292:Their societies are based on an 150:Reproduction and colony founding 1425:"Ancient Farmers of the Amazon" 241:ants are more polymorphic than 978:Ethology Ecology and Evolution 675:Hedlund, Kye S. (March 2005). 444:growing in the fungal garden. 1: 990:10.1080/08927014.2001.9522772 370:Leafcutter ant in Costa Rica 129:on the upper surface of the 779:Gardening Ants, The Attines 750:, Greenwood Press, p.  343:Leucoagaricus gongylophorus 1494: 709:10.1038/s41467-020-19566-3 233:exhibit a high degree of 496:Interactions with humans 1191:10.3389/fevo.2020.00095 1095:10.1073/pnas.96.14.7998 962:10.1093/beheco/13.2.224 775:Weber, Neal A. (1972), 643:10.1073/pnas.0711024105 520:List of leafcutter ants 472:Leafcutter ants prefer 191:parental fungus garden 1221:10.1098/rspb.2001.1605 371: 363: 262: 164: 109:southern United States 44: 1026:10.1038/ismej.2007.41 907:Biodiversity of Fungi 881:www.sciencedirect.com 696:Nature Communications 605:on February 23, 2018. 507:Acromyrmex lobicornis 482:secondary metabolites 478:pioneer plant species 369: 357: 255: 157: 62:belonging to the two 33: 1321:Nordic Society Oikos 744:Piper, Ross (2007), 294:ant–fungus mutualism 288:Ant–fungus mutualism 1215:(1471): 1033–1039, 1086:1999PNAS...96.7998C 825:. pp. xv+435. 683:on August 24, 2007. 634:2008PNAS..105.5435S 207:confirmed only for 107:, and parts of the 89:fungus-growing ants 83:. These species of 77:, within the tribe 1402:"Leaf-cutter ant ( 1270:10.1242/bio.029587 949:Behavioral Ecology 553:Ecology of Insects 474:disturbed habitats 372: 364: 263: 165: 45: 1431:Evolution Library 1264:(12): 1949–1952. 1080:(14): 7998–8002, 1049:"Leafcutter Ants" 924:978-0-12-509551-8 832:978-0-429-03826-6 794:978-0-87169-092-0 761:978-0-313-33922-6 628:(14): 5435–5440. 582:, pp. 11–13. 562:978-0-86542-745-7 16:(Redirected from 1485: 1439: 1437: 1436: 1420: 1418: 1417: 1388: 1386: 1359: 1353: 1352: 1306: 1300: 1299: 1289: 1249: 1243: 1241: 1232: 1202: 1196: 1194: 1193: 1171: 1165: 1163: 1124: 1118: 1116: 1107: 1097: 1067: 1061: 1060: 1055:, archived from 1053:Lincoln Park Zoo 1045: 1039: 1037: 1028: 1013:The ISME Journal 1008: 1002: 1000: 973: 967: 965: 964: 940: 934: 933: 932: 931: 897: 891: 890: 888: 887: 873: 867: 862: 856: 851: 845: 844: 810: 799: 797: 782: 772: 766: 764: 741: 732: 730: 721: 711: 691: 685: 684: 679:. Archived from 672: 666: 665: 655: 645: 613: 607: 606: 604: 598:. Archived from 597: 593:"Leafcutter Ant" 589: 583: 577: 568: 566: 548: 350:Waste management 322:ambrosia beetles 270:1.8–2.2 mm. 217:Colony hierarchy 213:by Vinson 1985. 179:(Portuguese) or 171:and engage in a 58:of leaf-chewing 54:, are any of 47 52:non-generic name 21: 18:Leaf-cutter ants 1493: 1492: 1488: 1487: 1486: 1484: 1483: 1482: 1448: 1447: 1434: 1432: 1423: 1415: 1413: 1404:Atta cephalotes 1400: 1397: 1392: 1391: 1361: 1360: 1356: 1308: 1307: 1303: 1251: 1250: 1246: 1204: 1203: 1199: 1173: 1172: 1168: 1145:10.2307/3762079 1126: 1125: 1121: 1069: 1068: 1064: 1047: 1046: 1042: 1010: 1009: 1005: 975: 974: 970: 942: 941: 937: 929: 927: 925: 899: 898: 894: 885: 883: 875: 874: 870: 863: 859: 852: 848: 833: 812: 811: 802: 795: 774: 773: 769: 762: 743: 742: 735: 693: 692: 688: 674: 673: 669: 615: 614: 610: 602: 595: 591: 590: 586: 578: 571: 563: 550: 549: 545: 540: 516: 498: 490:will come later 470: 458: 419: 352: 290: 259:Atta cephalotes 256:Leafcutter ant 219: 203:. Pleometrosis 152: 147: 101:Central America 48:Leafcutter ants 36:Atta cephalotes 28: 23: 22: 15: 12: 11: 5: 1491: 1489: 1481: 1480: 1475: 1470: 1465: 1460: 1450: 1449: 1446: 1445: 1440: 1421: 1396: 1395:External links 1393: 1390: 1389: 1370:(3): 215–219, 1354: 1301: 1244: 1197: 1166: 1139:(5): 955–959, 1119: 1062: 1040: 1019:(4): 313–320, 1003: 984:(3): 225–237, 968: 955:(2): 224–231, 945:Atta colombica 935: 923: 892: 868: 857: 846: 831: 800: 793: 767: 760: 733: 686: 667: 608: 584: 569: 561: 542: 541: 539: 536: 535: 534: 529: 522: 515: 512: 497: 494: 469: 466: 457: 454: 418: 415: 406:Pseudonocardia 401:Actinomycetota 384:Atta colombica 360:Atta colombica 351: 348: 318:antimicrobials 289: 286: 285: 284: 280:Atta laevigata 274: 271: 267: 218: 215: 173:nuptial flight 160:Atta colombica 151: 148: 146: 143: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1490: 1479: 1476: 1474: 1471: 1469: 1466: 1464: 1461: 1459: 1456: 1455: 1453: 1444: 1441: 1430: 1426: 1422: 1412:on 2010-03-27 1411: 1407: 1405: 1399: 1398: 1394: 1385: 1381: 1377: 1373: 1369: 1365: 1358: 1355: 1350: 1346: 1342: 1338: 1334: 1330: 1326: 1322: 1318: 1314: 1313: 1305: 1302: 1297: 1293: 1288: 1283: 1279: 1275: 1271: 1267: 1263: 1259: 1255: 1248: 1245: 1240: 1236: 1231: 1226: 1222: 1218: 1214: 1210: 1209: 1201: 1198: 1192: 1187: 1183: 1179: 1178: 1170: 1167: 1162: 1158: 1154: 1150: 1146: 1142: 1138: 1134: 1130: 1123: 1120: 1115: 1111: 1106: 1101: 1096: 1091: 1087: 1083: 1079: 1075: 1074: 1066: 1063: 1059:on 2008-05-16 1058: 1054: 1050: 1044: 1041: 1036: 1032: 1027: 1022: 1018: 1014: 1007: 1004: 999: 995: 991: 987: 983: 979: 972: 969: 963: 958: 954: 950: 946: 939: 936: 926: 920: 916: 912: 908: 904: 896: 893: 882: 878: 872: 869: 866: 861: 858: 855: 850: 847: 842: 838: 834: 828: 824: 820: 816: 809: 807: 805: 801: 796: 790: 786: 781: 780: 771: 768: 763: 757: 753: 749: 748: 740: 738: 734: 729: 725: 720: 715: 710: 705: 701: 697: 690: 687: 682: 678: 671: 668: 663: 659: 654: 649: 644: 639: 635: 631: 627: 623: 619: 612: 609: 601: 594: 588: 585: 581: 576: 574: 570: 564: 558: 554: 547: 544: 537: 533: 530: 528: 527: 523: 521: 518: 517: 513: 511: 509: 508: 503: 495: 493: 491: 487: 483: 479: 475: 467: 465: 463: 456:Communication 455: 453: 450: 445: 443: 439: 435: 430: 428: 424: 416: 414: 412: 408: 407: 402: 398: 393: 391: 386: 385: 379: 378: 368: 361: 356: 349: 347: 345: 344: 339: 335: 329: 327: 323: 319: 315: 311: 307: 303: 299: 295: 287: 282: 281: 275: 272: 268: 265: 264: 261: 260: 254: 250: 248: 244: 240: 236: 232: 228: 224: 216: 214: 212: 211: 206: 202: 198: 197:haplometrosis 194: 188: 186: 182: 181:vuelo nupcial 178: 175:known as the 174: 170: 162: 161: 156: 149: 144: 142: 138: 136: 132: 128: 124: 120: 116: 112: 110: 106: 102: 98: 94: 90: 86: 82: 81: 76: 75: 70: 69: 65: 61: 57: 53: 49: 42: 38: 37: 32: 19: 1463:Atta (genus) 1433:. 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This 193:mycelium 169:en masse 133:, while 91:are all 85:tropical 1287:5769659 1230:1088705 1153:3762079 1082:Bibcode 719:7686325 653:2291119 630:Bibcode 413:today. 403:(genus 362:at work 177:revoada 93:endemic 56:species 1382:  1347:  1294:  1284:  1276:  1237:  1227:  1159:  1151:  1112:  1102:  1033:  996:  921:  839:  829:  791:  785:14, 34 758:  726:  716:  660:  650:  559:  336:tips ( 334:hyphal 223:castes 185:colony 131:thorax 105:Mexico 80:Attini 64:genera 1380:S2CID 1325:Wiley 1319:(1). 1312:Oikos 1149:JSTOR 1105:22176 994:S2CID 603:(PDF) 596:(PDF) 306:molds 302:pests 97:South 1458:Ants 1345:ISSN 1292:PMID 1274:ISSN 1235:PMID 1157:PMID 1110:PMID 1073:PNAS 1031:PMID 919:ISBN 837:OCLC 827:ISBN 789:ISBN 756:ISBN 724:PMID 658:PMID 557:ISBN 502:Atta 324:and 304:and 239:Atta 231:Atta 229:and 123:Atta 119:Atta 117:and 99:and 71:and 68:Atta 60:ants 50:, a 1429:PBS 1372:doi 1368:121 1337:hdl 1329:doi 1282:PMC 1266:doi 1225:PMC 1217:doi 1213:268 1186:doi 1141:doi 1100:PMC 1090:doi 1021:doi 986:doi 957:doi 947:", 911:doi 752:298 714:PMC 704:doi 648:PMC 638:doi 626:105 95:to 1454:: 1427:. 1406:)" 1378:, 1366:, 1343:. 1335:. 1317:92 1315:. 1290:. 1280:. 1272:. 1260:. 1256:. 1233:, 1223:, 1211:, 1180:, 1155:, 1147:, 1137:96 1135:, 1131:, 1108:, 1098:, 1088:, 1078:96 1076:, 1051:, 1029:, 1015:, 992:, 982:13 980:, 953:13 951:, 917:, 905:, 879:. 835:. 821:: 817:. 803:^ 787:, 754:, 736:^ 722:, 712:, 700:11 698:, 656:. 646:. 636:. 624:. 620:. 572:^ 492:. 425:, 249:. 205:is 187:. 103:, 87:, 39:, 1438:. 1419:. 1387:. 1374:: 1351:. 1339:: 1331:: 1323:( 1298:. 1268:: 1262:6 1242:. 1219:: 1195:. 1188:: 1182:8 1164:. 1143:: 1117:. 1092:: 1084:: 1038:. 1023:: 1017:1 1001:. 988:: 966:. 959:: 913:: 889:. 843:. 798:. 765:. 731:. 706:: 664:. 640:: 632:: 567:. 565:. 277:( 20:)

Index

Leaf-cutter ants

Atta cephalotes
Wilhelma Zoo
non-generic name
species
ants
genera
Atta
Acromyrmex
Attini
tropical
fungus-growing ants
endemic
South
Central America
Mexico
southern United States
exoskeleton
thorax

Atta colombica
nuptial flight
colony
mycelium
haplometrosis
pleometrosis
Atta texana
castes
polymorphism

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