Bulletin of Zoological Nomenclature 143 DORALIS LEACH, 1827 (INSECTA, HEMIPTERA) : PROPOSED SUP-PRESSION UNDER THE PLENARY POWERS. Z.N.(S.) 583 By W. E. China {Assistant Secretary, International Commission on Zoological Nomenclature) The present application, first submitted to the Commission office on 23 June 1951 by Dr. F. C. Hottes (Grand Jimction, Colorado, U.S.A.) is concerned with the prevention of the resuscitation of an aphid generic name after a long period of disuse, and with the placing of this name and another, invaUd, name, Pharalis Leach, 1827, on the Official Index of Rejected and InvaUd Generic Names in Zoology. 2. In 1827, Leach (in Risso, Hist. nat. princip. Prod. Europ. mdrid. 5 : 217-218), pubUshed a hst of twenty-four scientific names of Aphids together with their vernacular names. No descriptions were given except for the last species in the list, Eriosoma oleae L.-R. (presumably an abbreviation of Leach-Risso) which, in spite of the description, has remained unidentified up to the present time. The majority of the aphid names were those of well-known species and were attributed to the correct authors but one was an Aleyrodid, Aleyrodes chelidonii Latreille. Included in the list were nine species, attributed to Leach, most of which appear to be the well-known names of Linnaeus, 1758, Fabricius, 1775, and Scopoh, 1763. However, there is no evidence to show that these names were not intended as new, since in the case of the remaining fifteen species in the Ust the correct names of the earher authors were given by Leach. Two new generic names were introduced into the hst by Leach, Doralis with four species : D. pini Leach, D. dauci Fabr., D. ulmi Leach, and D. rumicis Leach ; and Pharalis with six species : P. cerasi Leach, P. absinthii Leach, P. salicis Leach, P. vitis Leach, P. populi Leach, and P. tanaceti Leach. If, as it must be assumed, the Leach species are new species, then they are nomina nuda and cannot be used as representing " indications " for the generic names. Pharalis is thus an xmavailable name without descrip-tion or indication of any kind. Doralis is an available name, since among the nomina nuda included is a single described and known species, dauci Fabricius {Aphis dauci Fabricius, Syst. Ent., 1775 : 737). 3. For many years these two generic names, introduced by Leach, were considered by aphidologists as unavailable because of the manner of their publication, but in 1930, Borner {Arch. f. Kktssif. und phylog. Ent. 1(2) : 161, 163) resuscitated them. Borner considered that the specific names attributed to Leach were those of Linnaeus, 1758, Fabricius, 1775, and Scopoli, 1763. He therefore regarded both Doralis Leach and Pharalis Leach as vahd genera, and designated the tjrpe-species of Doralis as Aphis rumicis Linnaeus, 1758, and of Pharalis as Aphis tanaceti Linnaeus, 1758. The type-species of Doralis Leach, however, must be Aphis dauci Fabricius, 1775, since from the evidence available it is the only described species originally included in the genus. Bomer's type-selection of rumicis is therefore invahd. Bull. zool. NomencL, Vol. 18, Part 2. April 1961.
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