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Some Malformations of the Aedeagus and cases of probable Parasitic Castration in Coleoptera of the Family Anobiidae

Published online by Cambridge University Press:  06 April 2009

Hugh Scott
Hugh Scott
Affiliation:
Curator in Entomology in the University Museum of Zoology, Cambridge.
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Extract

A Large part of an account of the Anobiid beetles of the Seychelles Islands by the present writer, recently published (1924), consists of a description of a complex of species of small and obscure insects which it was extremely difficult to unravel. For these beetles, which vary in length between 1·6 and 2·6 mm., a new genus, Nesotheca, was erected. It was found that this genus has representatives in the Oriental Region, though the species of it which occur in the Seychelles are almost certainly endemic to those islands. Owing to the external characters being in many cases very inconstant, it proved impossible to discriminate between the various species at all satisfactorily by these characters alone, and therefore recourse was had to an examination of the genital armature, or aedeagus, of the males. This organ presents in the genus Nesotheca a remarkable series of quite distinct and constant forms, so that specimens which are almost, or entirely, indistinguishable externally, fall into quite clearly demarcated species when the aedeagus is used as a criterion. That the organ exhibits a quite different form in each of the ten species described can be seen by glancing at the figures in the paper to which reference has been made.

Type
Research Article
Information
Parasitology , Volume 17 , Issue 2 , May 1925 , pp. 176 - 186
Copyright
Copyright © Cambridge University Press 1925

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References

Arrow, G. J. (1917). Fauna of British India: Coleoptera Lamellicornia, Part II (Rutelinae, Desmonycinae, and Euchirinae).Google Scholar
Bateson, W. (1894). Materials for the Study of Variation, treated with especial regard to discontinuity in the origin of species.Google Scholar
Beffa, G. Della (1910). Casi di teratologia in alcune specie di Coleotteri. Riv. Col. Ital. VIII. pp. 129–148, Pl II a.Google Scholar
Berlese, A. (1906). Sopra una anomalia negli organi sessuali esterni feminei di Locusta viridissima. Redia, III. pp. 305–314.Google Scholar
Chapman, T. A. (1910). Teratological Specimens. Proc. Ent. Soc. London, p. lxi, Pl A.Google Scholar
Chinaglia, L. (1910). Coleotteri con anomalie di struttura. Riv. Col. Ital. VIII. pp. 1–8, 25–39, Pl I a.Google Scholar
Chinaglia, L. (1911–1912). Le più importanti anomalie dei Coleotteri descritte finora in Italia. Riv. Col. Ital. IX. pp. 212–227, op. cit. X. pp. 3–28.Google Scholar
Crawley, W. C. and Baylis, H. A. (1921). Mermis parasitic on ants of the genus Lasius. Journ. R. Micr. Soc. pp. 353–372.Google Scholar
Curti, M. (1913). Revision der paläarktischen Arten der Gattung Cetonia, s.str. Ent. Mitteilungen, II. pp. 340–346, 361–373, Pls. IV, V.Google Scholar
Fuchs, G. (1915). Die Naturgeschichte der Nematoden und einiger anderer Parasiten (1) des Ips typographic, L., (2) des Hylobius abietis, L. Zool. Jahrb., Abt. Syst. XXXVIII. pp. 109–222, Pls. XVII–XXI.Google Scholar
Giard, A. (1889). Sur la Castration Parasitaire des Typhlocyba par une larve d'Hyménoptère (Aphelopus melaleucus, Dalm.) et par une larve de Diptère (Ateleneura spuria, Meig.). C.R. Ac. Sci. CIX. pp. 708–710 (re-published in the collected “Oeuvres Diverses” of Giard, I, Biol. Générate, p. 305, 1911).Google Scholar
Glaser, W. R. and Wilcox, A. M. (1918). On the occurrence of a Mermis epidemic amongst grasshoppers. Psyche (Boston), XXV. pp. 12–15.Google Scholar
Krausse, A. (1915). Eigenartige Missbildungen am Abdomen einer Anoxia, sardoa, M. (Col.). Zool. Anz. XLV. pp. 529–530.Google Scholar
Mocquerys, E. (1857–1865). Recueil des Coléoptères anormaux (this work appeared in 8 fascicules, and was reprinted in 1880, rearranged, by the Soc. Amis Sci. Nat. Rouen).Google Scholar
Pérez, J. (1886). Des efiets du Parasitisme des Stylops sur les Apiaires du Genre Andrena. Actes Soc. Linn. Bordeaux, XL. pp. 21–60, Pls. I, II.Google Scholar
Pierce, W. Dwight (1909). A monographic revision of the twisted winged insects comprising the Order Strepsiptera, Kirby. Smithsonian Inst., U.S. Nat. Mus., Bull. 66, pp. i–xii, 1–232, Pls. I–XV.Google Scholar
Scott, Hugh (1924). Coleoptera: Ptinidae and Anobiidae of the Seychelles. Ann. Mag. Nat. Hist. (9) XIV. pp. 345–426.CrossRefGoogle Scholar
Sharp, D. and Muir, F. (1912). The comparative anatomy of the male genital tube in Coleoptera. Trans. Ent. Soc. London, pp. 477–642, Pls. XLII–LXXVIII.Google Scholar
Smith, G. and Hamm, A. H. (1914). Studies in the experimental analysis of sex. Part II, On Stylops and Stylopization. Q. J. Micr. Sci. 60, pp. 435–461, Pls. XXXII–XXXV.Google Scholar
Vaulx, R. de la (1922). La Castration Parasitaire des Arthropodes. Rev. gén. Sci. (Paris), XXXIII pp. 131, 132.Google Scholar
Wheeler, W. M. (1910). Ants: their structure, development and behavior. New York (Columbia Univ. Biol. Series, IX.).Google Scholar