4 MISC. PUBLICATION 341, U. S. DEPT. OF AGRICULTURE 
GENERIC NAMES IN THE PANTOMORUS-NAUPACTUS 
COMPLEX 
The latest world catalog of beetles* lists four genonyms in the 
synonymy of Nawpactus and six in the synonymy of Pantomorus; in 
addition there are two previously uncataloged generic names to be 
considered. Of these 12 names, 2 are here revived for subgenera of 
Pantomorus and doubtless some of the others will later come into use. 
It seems desirable, therefore, to examine all these names and to indicate 
which ones appear nomenclatorially available. 
ALCEIS Billberg, 1820 
Alceis Billberg, 1820, Enumeratio Insectorum, p. 45. Monobasic. Type, Curculio 
longimanus F., 1775; type locality, Brazil. Genus not described by Billberg, 
but the name established by its association with a described species. The 
type species has the humeri subobsolete, and is undoubtedly flightless, though 
the hind wing is almost as long as an elytron—that is, nearly midway between 
the rudimentary and the macropterous wing forms. 
Iphius Schoenherr, 1823, Isis von Oken, column 1140. Monobasiec. Type, Curculio 
tongimanus F. Iphius is thus an absolute synonym of Alceis Billberg. 
Leptocerus Germar, 1824, Insectorum Species Novae, v. 1, p. 417. (Homonym of 
Leptocerus Miiller, 1817). Germar referred several species, including 
(rivulosus F.) =rivulosus Oliv. and longimanus F. to his Leptocerus. Schoen- 
herr, 1826 (Curculionidum Dispositio Methodica, pp. 104-107) cites “Iphius 
nob. olim’’ in the synonymy of Leptocerus Germar, divides the latter into 
<hree “stirpes” plus the subgenus Plectrophorus, and makes longimanus F. 
the type of stirps 1. To fix the status of Leptocerus definitely, Curculio 
longimanus F. is hereby designated type of Leptocerus Germar (not Lep- 
tocerus Miller), which thus becomes an absolute synonym of Alceis Billberg. 
NAUPACTUS Dejean, 1821 
Naupactus Megerle, Dejean, 1821, Catalogue de la Collection de Coléoptéres, 
p. 94. Genotype, Curculio (rivulosus F. 1792) =rivulosus Oliv., 1790, desig- 
nated by Champion, 1911, Biologia Centrali-Americana, v. 4, pt. 3, p. 232. 
This genus, not known from the United States, will include various winged 
species from Mexico and southward. Dejean refers the genus to Megerle 
and assigns to it rivulosus F. and several other species, not including 
longimanus F. Pending examination of Megerle’s papers (which apparently 
are not available in the United States) Nawpactus is here credited to Dejean, 
1821. Both Olivier, 1790 (Encyclopédie Mee odta te Viewioy. 0 O45) .) rene: 
Fabricius, 1792 (Entomologia Systematica, v. 1, pt. 2, p. 477), erroneously 
record “Indes orientales” as the habitat of rivulosus. The species is 
South American and is so recorded by Germar, 1824 (Insectorum Species 
Novae, vy. 1, p. 419) and by later writers. MHeller’s 1921 designation of 
(“longimanus Schonh.”’)=longimanus F. as type of Naupactus (An. Soe. 
Cient. Argentina 91: 20) is apparently invalid and also is antedated by 
Champion’s designation. 
Archopactus Heller, 1921, An. Soc. Cient. Argentina 91: 20. Genotype, by 
original designation (‘‘Leptocerus rivulosus Germ.”)=Naupactus rivulosus 
(Oliv.). Archopactus is thus an absolute synonym of Naupactus. 
PANTOMORUS Schoenherr, 1839 
Pantomorus Schoenherr, 1839, Genera et Species Curculionidum, v. 5, p. 942. 
Monobasic. Type, P. albosignatus Boh. ibid., p. 943; type locality, Mexico. 
Of the type species the author has examined about 100 specimens, all of 
them apparently females. As interpreted in this publication, Pantomorus 
sens. str. does not occur in the United States. The approximately two 
dozen species of Pantomorus sens. lat. from Mexico and Central America 
* DALLA TORRE, K. W. VON, and EMDEN, M., VAN, and EMDEN, F., vAN. CuURCULIONIDAR, 
BRACHYDERINAB I, In Schenkling Ss. , Coleopterorum Catalogus, pt. 147, 132 pp. 1936. 
