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Anchylorhynchus

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into the developing fruit. After entering the fruit, larvae molt and start consuming plant tissues, causing abortion of developing fruits. First- and second instar larvae attack and consume other larvae upon encountering them. Later instars avoid other larvae and are not aggressive. Starting on the second instar, larvae acquire the grub-like, cylindrical and C-shaped body characteristic of other Curculionidae. The mandible also changes its shape, becoming triangular and broad, adapted to crush plant tissues.
54: 33: 450:, but this is still unconfirmed. Adults use their rostrum to open male flowers and feed on pollen. While resting, they remain in the branches of the inflorescence or hidden at its base. Unlike most Curculionidae, females do not use the rostrum to drill an oviposition hole in plant tissues. Instead, they lay eggs directly between petals and sepals of female flowers. 405: 369:
are unique in Curculionidae due to their falcate mandibles (usually found in insects that feed on other insects). Additionally, they are flattened dorso-ventrally, living between sepals and petals of female palm flowers. After hatching, larvae migrate to the base of the female flower, drilling a hole
258:. The antennal funicle (segments excluding the first and the club) has only six segments, as opposed to seven segments in other genera. The antennae are inserted at the apex of the rostrum in both sexes, while it is inserted closer to the base in most other Curculionidae (at least in females). 345: 410: 406: 407: 249:
by a number of features. The body is round, convex, and densely covered by scales varying from yellow to black. The rostrum is flattened dorso-verntrally at the apex, and exhibits 2-7 longitudinal grooves from the base of the
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De Medeiros, Bruno A. S.; Vanin, Sergio A. (31 August 2020). "Systematic revision and morphological phylogenetic analysis of Anchylorhynchus Schoenherr, 1836 (Coleoptera, Curculionidae: Derelomini)".
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De Medeiros, Bruno A. S.; Vanin, Sergio A. (31 August 2020). "Systematic revision and morphological phylogenetic analysis of Anchylorhynchus Schoenherr, 1836 (Coleoptera, Curculionidae: Derelomini)".
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AnĂĄlise filogenĂ©tica e revisĂŁo sistemĂĄtica do gĂȘnero Anchylorhynchus Schoenherr, 1836 (Curculionidae : Derelomini), com o uso de caracteres morfolĂłgicos contĂ­nuos e discretos
349: 479:). He observed that adults fed on pollen and conjectured that larvae might feed on flowers, even though he never observed them. More recently, the full life cycle of 325: 408: 1299: 388: 376: 1273: 995:"Curculio Curculis lupus: biology, behavior and morphology of immatures of the cannibal weevil Anchylorhynchus eriospathae G. G. Bondar, 1943" 310: 348: 295: 1345: 963:
Vaurie, Patricia (1954). "Revision of the genera Anchylorhynchus and Petalochilus of the Petalochilinae (Coleoptera, Curculionidae)".
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go through 4 stages (instars) before molting into a pupa. The most distinctive stage is the first instar. First-instar larvae of
53: 811: 695: 533: 1247: 274: 1304: 949: 1116:"Interactions of the Cerrado Palms Butia paraguayensis and Syagrus petraea with Parasitic and Pollinating Insects" 965: 1115: 159: 1067:"EcologĂ­a de la polinizaciĂłn de tres especies de Oenocarpus (Arecaceae) simpĂĄtricas en la Amazonia colombiana" 142: 1340: 1200: 943: 289:. The shape and degree of retraction varies between species, but these segments are always flat in males. 1252: 483:
has been described, showing that larvae feed on developing seeds and adults on pollen. Also, species of
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de Medeiros, Bruno Augusto Souza; BenĂĄ, Daniela de CĂĄssia; Vanin, Sergio Antonio (31 July 2014).
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have an unusual morphology, being specialized on killing other larvae infesting the palm fruits.
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made most of the subsequent observations, recording host plants for many species. He considered
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The following list shows all valid species, with recognized synonyms shown indented:
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Silberbauer-Gottsberger, Ilse; Vanin, SĂ©rgio Antonio; Gottsberger, Gerhard (2013).
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NĂșñez-Avellaneda, Luis Alberto; Isaza, Carolina; Galeano, Gloria (2015).
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visit male and female flowers of several palm species in the genera
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Faust, Johannes (1894). "Russelkafer der alten und neuen Welt".
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distributed from Panama to Argentina. Members of the genus are
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Vanin, Sergio A.; BenĂĄ, Daniela C.; Chamorro, M. Lourdes.
1207: 465:from specimens collected from palms in Argentina. 988: 986: 984: 937: 935: 487:have been shown to be important pollinators of 453:The first observation about natural history of 919:"CatĂĄlogo TaxonĂŽmico da Fauna do Brasil. PNUD" 8: 1195: 473:to be a pest of the palm known as licuri ( 31: 20: 1131: 1082: 1020: 1010: 704:de Medeiros & NĂșñez-Avellaneda, 2013 670:de Medeiros & NĂșñez-Avellaneda, 2013 624:de Medeiros & NĂșñez-Avellaneda, 2013 519:There are currently 25 valid species of 273:, and/or denser and longer hairs in the 245:can be readily distinguished from other 226:feeding on developing fruits. The first 866: 372: 291: 192:. It currently includes 25 described 7: 1133:10.13102/sociobiology.v60i3.306-316 948:(Master's thesis) (in Portuguese). 14: 942:de Medeiros, Bruno A. S. (2011). 818:Anchylorhynchus mutabilis connata 1047:Stettiner Entomologische Zeitung 387: 375: 324: 309: 294: 52: 796:Valente & de Medeiros, 2013 622:Anchylorhynchus centrosquamatus 564:Anchylorhynchus gottsbergerorum 628:Anchylorhynchus chrysomeloides 340:Larval morphology and behavior 1: 718:Anchylorhynchus trapezicollis 668:Anchylorhynchus luteobrunneus 1071:Revista de BiologĂ­a Tropical 785:Anchylorhynchus tricarinatus 736:Anchylorhynchus botryophorae 683:Anchylorhynchus multisquamis 840:Anchylorhynchus nigripennis 831:Anchylorhynchus vittipennis 774:Anchylorhynchus pictipennis 765:Anchylorhynchus hatschbachi 756:Anchylorhynchus eriospathae 747:Anchylorhynchus tremolerasi 604:Anchylorhynchus burmeisteri 584:Anchylorhynchus leiospathae 558:Anchylorhynchus bicarinatus 414:Oviposition on palm flowers 1367: 800:Anchylorhynchus variabilis 549:Anchylorhynchus amazonicus 160:Anchylorhynchus variabilis 1346:Beetles described in 1836 1169:10.11646/zootaxa.4839.1.1 966:American Museum Novitates 950:Universidade de SĂŁo Paulo 888:10.11646/zootaxa.4839.1.1 809:Anchylorhynchus mutabilis 702:Anchylorhynchus pinocchio 444:might be associated with 157: 150: 49:Scientific classification 47: 39: 30: 23: 1351:Beetles of South America 1084:10.15517/rbt.v63i1.13030 849:Anchylorhynchus lineatus 648:Anchylorhynchus imitator 531:Anchylorhynchus aegrotus 218:, with adults living in 1163:(1): zootaxa.4839.1.1. 882:(1): zootaxa.4839.1.1. 674:Anchylorhynchus minimus 658:Anchylorhynchus latipes 613:Anchylorhynchus camposi 575:Anchylorhynchus bicolor 540:Anchylorhynchus albidus 442:Anchylorhynchus minimus 400:Interaction with plants 200:of palms in the genera 794:Anchylorhynchus vanini 708:Anchylorhynchus rectus 693:Anchylorhynchus parcus 638:Anchylorhynchus goiano 415: 358: 331:Color polymorphism in 727:Anchylorhynchus bleyi 595:Anchylorhynchus bucki 413: 353: 184:belonging the family 254:to the insertion of 504:Butia paraguayensis 495:Oenocarpus balickii 394:Fourth-instar larva 710:de Medeiros & 685:de Medeiros & 660:de Medeiros & 650:de Medeiros & 640:de Medeiros & 630:de Medeiros & 509:Syagrus loefgrenii 416: 382:First-instar larva 359: 267:sexually dimorphic 1328: 1327: 1313:Open Tree of Life 1201:Taxon identifiers 1012:10.7717/peerj.502 490:Oenocarpus bataua 457:was published by 411: 351: 319:, female, ventral 173: 172: 146: 1358: 1321: 1320: 1308: 1307: 1295: 1294: 1282: 1281: 1269: 1268: 1256: 1255: 1243: 1242: 1241: 1228: 1227: 1226: 1196: 1189: 1188: 1152: 1146: 1145: 1135: 1111: 1105: 1104: 1086: 1062: 1056: 1055: 1041: 1035: 1034: 1024: 1014: 990: 979: 978: 960: 954: 953: 939: 930: 929: 927: 925: 914: 908: 907: 871: 499:Oenocarpus minor 476:Syagrus coronata 471:A. trapezicollis 461:, who described 412: 391: 379: 352: 328: 313: 304:, female, dorsal 298: 238:Adult morphology 141: 57: 56: 35: 21: 16:Genus of beetles 1366: 1365: 1361: 1360: 1359: 1357: 1356: 1355: 1331: 1330: 1329: 1324: 1316: 1311: 1303: 1298: 1290: 1285: 1277: 1272: 1264: 1259: 1251: 1246: 1239:Anchylorhynchus 1237: 1236: 1231: 1222: 1221: 1216: 1209:Anchylorhynchus 1203: 1193: 1192: 1154: 1153: 1149: 1113: 1112: 1108: 1064: 1063: 1059: 1043: 1042: 1038: 992: 991: 982: 962: 961: 957: 941: 940: 933: 923: 921: 916: 915: 911: 873: 872: 868: 863: 521:Anchylorhynchus 517: 485:Anchylorhynchus 467:GregĂłrio Bondar 455:Anchylorhynchus 420:Anchylorhynchus 404: 402: 395: 392: 383: 380: 367:Anchylorhynchus 363:Anchylorhynchus 356:Anchylorhynchus 354:Cannibalism in 344: 342: 335: 329: 320: 314: 305: 299: 263:Anchylorhynchus 243:Anchylorhynchus 240: 232:Anchylorhynchus 177:Anchylorhynchus 169: 163: 140: 137:Anchylorhynchus 51: 25:Anchylorhynchus 17: 12: 11: 5: 1364: 1362: 1354: 1353: 1348: 1343: 1333: 1332: 1326: 1325: 1323: 1322: 1309: 1296: 1283: 1270: 1257: 1244: 1229: 1213: 1211: 1205: 1204: 1199: 1191: 1190: 1147: 1126:(3): 306–316. 1106: 1073:(in Spanish). 1057: 1036: 980: 969:(1651): 1–58. 955: 931: 909: 865: 864: 862: 859: 858: 857: 856: 855: 846: 828: 827: 826: 825: 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Index


Scientific classification
Edit this classification
Eukaryota
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Derelomini
Anchylorhynchus
Schönherr
Type species
Anchylorhynchus variabilis
Gyllenhal
weevils
Curculionidae
Curculioninae
species
pollinators
Syagrus
Oenocarpus
Butia
inflorescences
larvae
instar
Derelomini
rostrum
antennae
sexually dimorphic

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