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The Genus Scelolyperus Crotch in North America (Coleoptera: Chrysomelidae: Galerucinae)

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The Genus Scelolyperus Crotch in North America (Coleoptera: Chrysomelidae: Galerucinae) University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida March 1996 The genus Scelolyperus Crotch in North America (Coleoptera: Chrysomelidae: Galerucinae) Shawn M. Clark West Virginia Department of Agriculture Follow this and additional works at: https://digitalcommons.unl.edu/insectamundi Part of the Entomology Commons Clark, Shawn M., "The genus Scelolyperus Crotch in North America (Coleoptera: Chrysomelidae: Galerucinae)" (1996). Insecta Mundi. 6. https://digitalcommons.unl.edu/insectamundi/6 This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. INSECTA MUNDI, Vol. 10, Nos. 1-4, March - December, 1996 261 The genus Scelolyperus Crotch in North America (Coleoptera: Chrysomelidae: Galerucinae) Shawn M. Clark Plant Industries Division West Virginia Department of Agriculture 1900 Kanawha Blvd., East Charleston, West Virginia 25305-0191 Abstraot: A key and diagnoses are provided for the North American species of Scelolypelwr Crotch. Descriptions are given for Scelolyperus pasadenae, new species &om California and Scelolyperua tetonenuis, new species &om Wyoming. Luperua morriaoni Jacoby is treated as a junior synonymof Luperus uaripes LeConte, Luperodes nigrovirescensFallis treated as a junior synonym of Luperus nigrocyaneua LeConte, and Scelolyperus chautauquua Wilcox is treated as a junior synonym of Scelolyperua liriophilua Wilcox, new synonymies. Luperus lecontii Crotchis transferred to Scelolyperua, new combination. Distributional and biological data are provided for each species. Introduction niques similar to those described by Smith (1979) In 1874, Crotch proposed the monotypic genus and Reid (1992). Scelolyperus to accommodate his new species S. tejonicus. He did not recognize that several other Genus Scelolyperus Crotch species already known at that time were congener- Scelolyperus Crotch, 1874:79 (Type: Scelolyperus tejoni- ic. Since then, several workershave addedinforma- cus Crotch, 1874, by monotypy); Horn, 1893:102; Arnett, 1962:912, 934; Wilcox, 1965:18, 19, 126. tion to this group, but it was not until 1965 that Eugalera Brancsik, 1899:103 (Type: Eugalera Reitteri Wilcox provided the critical interpretation that is Brancsik, 1899, by monotypy); Ogloblin, 1936:273; the basis of the current understanding of the group. Wilcox, 1973:461 (=Scelolyperus Crotch, 1874). Since his admirable treatment, two additional spe- cies were described by Hatch (1971). My investiga- Diagnosis. Scelolyperus belongs to the section tions have discovered two additional new species, Scelidites, a group of closely related genera in the as well as several other taxonomic changes dis- subtribe Luperina of the tribe Luperini. This sec- cussed in the treatment below. tion is usually recognizable by the presence of a In an effort to reduce the length of this paper, rectangular lobe at the apex of the male abdomen. detailed descriptions have not been included, ex- In North America, only three other groups of Gal- cept for new species. Likewise, data from material erucinae have similar lobes. The first of these, examined (at least from localities in the United Phyllobrotica (section Phyllobroticites) is unlike States where specimens are often abundant) are Scelidites in having an extremely narrow epipleu- usuallyreduced to county level distribution, months ron. The second, section Monoleptites, is unlike collected, and hosts mentioned. Previously pub- Scelidites in having a sclerotized operculum to the lishedlocality records are usually mentioned only3 aedeagal orifice and usually in having a very long they are considered authentic and if they extend basitarsus on the hind leg. The third, Pteleon (sec- distributions beyond those indicated by material tion Exosomites which may well be synonymous that I have personally examined. Most of the infor- with Scelidites), is represented in America by spe- mation in this paper has been condensed from cies with rather short antennae that reach only portions of an unpublished Ph.D. dissertation per- slightly beyond the humerus, antennomeres 2, 3, manently preserved at the Ohio State University and 4 being about equal in length. (Clark, 1987), and detailedinformation is therefore Scelolyperus has a basal bead on the pronotum not entirely inaccessible to future researchers. but lacks obvious antennal or elytral modifications Ihave given agreat dealof emphasis to the form in male. The elytra lack a conspicuous transverse of the aedeagi (a preliminary study indicated that impression at the basal third. The rectangular lobe the spermathecae were not very diagnostic). at the apex of the male abdomen is less than half as Aedeagal preparations were made following tech- long as broad. The longitudinal interantennal car- ina is well developed, and the antennal fossae are 262 Vol. 10, Nos. 1-4, March-December, 1996, INSECTA MUNDI separated by no more than twice the diameter of Key to New World Species of Scelolyperus each fossa. The eyes of most species are somewhat distant from the oralfossa, the genaebeing about as 1. Pronotum pale ................................................................ 2 long as the terminalpalpomere ofthe maxilla. This - Pronotum black, dark brown, metallic green, metallic combination of characters willdistinguish this from blue, or metallic purple ................................... 16 other New World genera of Scelidites. All known species of Scelolyperus have entirely dark (either 2(l).Length 4.7-7.0 mm .................................................... 3 - Length 3.0-4.7 mm ....................................................... 9 black or metallic) elytra. Additional discussion and a key to genera will be provided in forthcoming 3(2). Aedeagus pointed or rounded at apex, asymmetri- papers in which twonew genera are describedfrom cal (figs. 4c-d); hind tibia of male straight ..... 4 Mexico. -Aedeagus broadly truncate at apex, symmetrical (figs. Non-metallic species of Scelolyperus from the 3b, 4i-m); hind tibia of male curved or straight westernU.S.A arefrequently confusedwithPseudo- luperus longulus (LeConte), but that species has genae that are only about half as long as the 4(3).Tibiae of male with terminal spurs; length 2.9-4.7 terminal article of the maxillary palp. Metallic mm; British Columbia, California, and Arizona ............................................. torquotus (LeConte) species from western states are sometimes con- -Tibiae of male lacking terminal spurs; length 5.9-7.0 fused with various species of Phyllobrotica, but mm; California ................. flavicollis (LeConte) that genus lacks a well-developed epipleuron. In southeastern areas of the U.S.A, Scelolyperus is 5(3).Posterior tibia of male strongly curved, with a often confused with Lysathia ludoviciana (Fall), a prominent tooth on inner side at basal 113 (fig. flea beetle that has comparatively widely separated 3d); terminal abdominal tergite not produced; front coxae. terminal spurs present on middle tibiae, absent Comments. In spite of the difficulty in charac- from front and hind tibiae; length 5.0 mm; terizing this genus, the species that are included California ................................. .tejonicue Crotch - Posterior tibia without tooth ................................... 6 are rather homogeneous in form and fit well togeth- er. 6(5).Terminal abdominal tergite of male strongly pro- This is the only genus of Scelidites that has duced (fig. 3g); hind tibia of male arcuate; representatives in the Old World (Asia) aswell as in length 4.5-6.0 mm; California ............................. the Western Hemisphere. Having examined Asian .................................................. megalurus Wilcox specimens of S. altaicus (Mannerheim), I concur - Terminal abdominal tergite of male not produced ... 7 with Wilcox (1965) that this species does belong in Scelolyperus. Only one other Old World species, S. 7(6).Hind tibiae with apical spurs; inner side of hind tibia sericeus (Jacobson), is currently classified in the of male evenly pubescent, without glabrous area ............................................................................... 8 genus (Wilcox, 1973), but I have not examined - Hind tibiae of male lacking apical spurs; inner side of specimens. Perhaps several of the Old World spe- hind tibia of most males with a broad, glabrous, cies now included in Luperus or similar genera margined channel; elytra dark blue, bluish properly belong in Scelolyperus also, but I have not green, or purple; pronotum black; apical and fully investigated this possibility. My treatment of basal margins of pronotum may be dark brown this genus is restricted to those species occurring in (variation in color indicates that specimens the Western Hemisphere. They are foundin Cana- may occur with pale pronotum); length 5.5-6.0 da and the U. S.A., and in nearby areas of northern mm; California ........................ .curvipee Wilcox Mexico. 8(7). Hind tibia arcuate in male (fig. 38); ventral side of The following key is a modification of that apex of aedeagus with two long longitudinal provided by Wilcox (1965). Most species are best carinae and two short longitudinal carinae (fig. recognized by male characters, and the key will 4j); length 5.3-5.9 mm; California ....................
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