Angela ROGGERO, Claudia TOCCO, Claudia PALESTRINI

Description of the larval instars of Amidorus immaturus (Mulsant, 1842)(Coleoptera: Scarabaeoidea: Aphodiidae)

The morphology of the 1st and 2nd larval instars of A. immaturus (Mulsant, 1842) is described and illustrated here for the first time, with an emphasis on the cephalic capsule, head appendages, legs, and last abdominal segments. The cephalic capsule size was employed to determine the larval instar, while the genital disc was employed to assess the sex of the larvae. The growth and sex ratio of A. immaturus were analyzed.

Anahtar Kelimeler:

Key words: Dung beetles, Aphodiinae, Amidorus immaturus, larval instar, larval sex

Description of the larval instars of Amidorus immaturus (Mulsant, 1842)(Coleoptera: Scarabaeoidea: Aphodiidae)

Keywords:

Key words: Dung beetles, Aphodiinae, Amidorus immaturus, larval instar, larval sex,

PDF

___

Brooks, W.K. 1886. Report on the Stomatopoda collected by H.M.S. Challenger during the years 1873-76. Zoology Part XLV. In: Report of the Scientific Results of the Voyage of the H.M.S. Challenger during the Years 1873–76. H.M. Stationery Office, London (partim).
Daly, H.V. 1985. Insect morphometrics. Annu. Rev. Entomol. 30: 415–438.
Dellacasa, G. 1983. Sistematica e nomenclatura degli Aphodiini italiani (Coleoptera Scarabaeidae: Aphodiinae). Museo Regionale di Scienze Naturali di Torino.
Dellacasa, G., Bordat, P. and Dellacasa, M. 2001. A revisional essay of world genus-group taxa of Aphodiinae (Coleoptera Aphodiidae). Mem. Soc. Entomol. It. 79(2000): 1–482.
Dellacasa, G. and Dellacasa, M. 2006. Fauna d’Italia. XLI. Coleoptera. Aphodiidae, Aphodiinae. Calderini, Bologna.
Dellacasa, G., Dellacasa, M. and Mann, D.J. 2010. The morphology of the labrum (epipharynx, ikrioma and aboral surface) of adult Aphodiini (Coleoptera: Scarabaeidae: Aphodiinae) and the implications for systematics. Insecta Mundi 132: 1–21.
Dyar, H.G. 1890. The number of molts of lepidopterous larvae. Psyche 5: 420–422.
Hutchinson, J.M.C., McNamara, J.M., Houston, A.J. and Vollrath, F. 19 Dyar’s Rule and the Investment Principle: optimal moulting strategies if feeding rate is size-dependent and growth is discontinuous. Phil. Trans. R. Soc. B 352: 113–138. Jay-Robert, P., Lobo, J.M. and Lumaret, J.P. 1997. Altitudinal turnover and species richness variation in European montane dung beetles assemblages. Arctic Alpine Res. 29: 196–205.
Martínez, I.M. and Lumaret, J.P. 2003. Dimorfismo sexual en larvas de Scarabaeoidea (Coleoptera). In: Monografías Tercer Milenio Vol. 3. Escarabeidos de Latinoamérica: Estado de conocimiento (Eds. G. Onore, P. Reyes-Castillo, M. Zunino). SEA, Zaragoza, pp.15–18.
Martínez, I.M. and Lumaret, J.P. 2005. Structure of the terminal ampulla in male larvae of Canthon cyanellus LeConte (Coleoptera: Scarabaeidae: Scarabaeinae). Coleopts. Bull. 59: 35–
Moczek, A.P. and Nijhout, H.F. 2002. A method for sexing final instar larvae of the genus Onthophagus Latreille (Coleoptera: Scarabaeidae). Coleopts. Bull. 56: 279–284.
Nicolas, J.L. and Riboulet, R. 1967. Les Aphodius Ill. français du groupe obscurus (F.). Le cas d’immaturus Muls. (Col. Scarabaeidae). Bull. Mens. Soc. Linn. Lyon 36: 113–117.
Palestrini, C., Roggero, A. and Barbero, E. 2008a. The morphology of preimaginal stages of Agoliinus satyrus (Reitter, 1892) (Coleoptera: Aphodiidae: Aphodiini), with notes on reproductive biology. Rev. Suisse Zool. 115: 565–573.
Palestrini, C., Roggero, A., Gorret, R., Tocco, C., Negro, M. and Barbero, E. 2008b. Scarabaeoidea coprofaga della Val Veny e della Val Ferret (Valle d’Aosta, Italia). Rev. Val. Hist. Nat. 61– 62: 241–253.
Palestrini, C., Roggero, A., Rolando, A. and Tocco, C. 2009. Morfometria larvale in Amidorus obscurus (F.) e A. immaturus (Mulsant) (Coleoptera, Aphodiidae). Atti 70° Convegno dell’U.Z.I., Rapallo (GE) 21-24.9.2009. Boll. Mus. Ist. Biol. Univ. Genova 71: 174.
Paulian, R. and Baraud, J. 1982. Lucanoidea et Scarabaeoidea. Faune des coléoptères de France, 2nd ed. Lechevalier, Paris.
Piau, O., Lumaret, J.P. and De Stordeur, E. 1999. Diversité et divergence de l’ADN mitochondrial d’Aphodius obscurus et Aphodius immaturus de France (Coleoptera: Aphodiidae). Ann. Soc. Entomol. France 35 (Suppl.): 117–123.
Stern, D.L. and Emlen, D.J. 1999. The developmental basis for allometry in insects. Development 126: 1091–1101.
Tagliaferri, F. 2000. Una specie nuova per la fauna italiana: Aphodius (Amidorus) immaturus. Riv. Piem. St. Nat. 21: 239–243.
Tarasov, S.I. 2008. A revision of Aphodius Illiger, 1798 subgenus Amidorus Mulsant et Rey, 1870 with description of the new subgenus Chittius (Coleoptera: Scarabaeidae). Russ. Entomol. J. 17: 177–192.
Tocco, C., Roggero, A., Rolando, A. and Palestrini, C. 2011. Interspecific shape divergence in Aphodiini dung beetles: the case of Amidorus obscurus and A. immaturus. Org. Divers. Evol. 11: 263–273