2001: The Coleopterists Bulletin 55(1): 50.

Among carabid larvae, those of the genus Cymbionotum Baudi, 1864, the sole member of the tribe Cymbionotini, have long been desired for morphological study. During an expedition to Turkmenia in 1996, I collected all three species known from the region, namely C. pictulum H. Bates, 1874, C. semelederi (Chaudoir, 1861) and C. transcaspicum Semenov, 1890. Adult beetles were placed in plastic containers with soil for subsequent rearing of larvae. About ten days later I discovered nine apparently first-instar larvae in the box containing the C. pictulum adults. Six larvae were transferred into ethanol, and the remaining three were kept for the subsequent instars. The live larvae were provided with a wide variety of food items, however they refused to eat and soon died. Next year I went again to Turkmenia and kept two Cymbionotum species to rear their larvae, however no larvae were obtained.

The six preserved larvae from 1996 were recently described (V.V. Grebennikov & Y. Bousquet 1999, Advances in Carabidology. Papers dedicated to the memory of Dr. Prof. O.L. Kryzhanovskij. Krasnodar, MUISO Publishers, 109-114Grebennikov & Bousquet, 1999). While the manuscript was in press, Professor Inessa Kh. Sharova called my attention to the fact that the drawings of the larvae that we believed to be those of Cymbinotum pictulum resembled those of the first-instar larva of Lebia scapularis (Fourcroy, 1785). Immature stages of this latter species were first described by Silvestri (F. Silvestri 1904, Redia 2:68-841904) and his drawings were reproduced in Sharova’s monograph (I.Kh. Sharova 1958, Uchenye zapiski Moskovskogo Gosudarstvennogo Pedagogicheskogo Instituta Imeni Lenina 124:1-165 (in Russian)1958). The more detailed drawings and description of first-instar larvae of L. chlorocephala (Hoffmannsegg, 1803) provided by Arndt (E. Arndt 1991, Die Larven der Käfer Mitteleuropas. Band 1: Adephaga. (B. Klausnitzer, editor). Goecke & Evers, Krefeld 45-1411991) convinced me that the "Cymbionotum pictulum" larvae are in fact those of Lebia sp. It seems highly unlikely to believe the described larvae might belong to any carabid taxa but Lebia, because they have all peculiar features of the latter genus drawn in details by Arndt (1991). An effort was made to withdraw the paper from print, but it was too late. I feel it is my duty to report this misfortunate fact as soon as possible. Apparently, Lebia eggs were unwittllingly brought into the rearing container with the soil. It seems to be a rather rare case since during two field seasons in Turkmenia I collected about one hundred Cymbionotum adult specimens and only two adult specimens of the genus Lebia. In conclusion I will repeat van Emden’s words that "… even breeding may result in misidentification… " (F.I. Emden, van 1942, Transactions of the Royal Entomological Society of London 92(1):1-991941: 80). Cymbionotum larvae are still unknown.

Vasily V. Grebennikov, Department of Epidemiology, Rostov Research Institute for Plague Control, Maksim Gorky str., 117, Rostov-on-Don, 344007, Russia.

Last updated: March 20, 2001
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