Insecta Mundi, Volume 12 (1998)
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Prionus (Homaesthesis) simplex (Casey) was described (Casey, 1912:253) from one male specimen from Kansas with no further data. The specimen is in the United States National Museum and is illustrated by Chemsak (1996). Alexander (1958) reported P. simplex from two locations in Craig County, Oklahoma. Alexander's paper appears to be the basis for two localities shown in northeastern Oklahoma on the distribution maps given by Linsley (1962) and Chemsak (1996). The one locality shown in central Kansas on the map by Chemsak (1996) represents just a "state record" and not a specific collecting record (J. Beier!, Editor of Wolfs garden Books, pers. comm.)
Polyphylla aeolus La Rue, new species, is described from the Kelso Sand Dunes, Mojave Desert, San Bernardino County, California, U.S.A. Illustrations of dorsal habitus, significant morphological details, and adult genitalic forms are provided. A description of the type locality including geographical and ecological parameters is presented. Taxonomic problems within the genus and limitations of recently proposed methods of species identification are discussed. A modified key is provided to distinguish the new species. The heretofore undescribed females of Polyphylla anteronivea Hardy, P. mescalerensis Young, P. nubila Van Dyke, and P. pottsorum Hardy, are described. The larval host of P. erratica Hardy is reported, and the adult female is redescribed from pristine specimens. A dorsal habitus illustration of each female is provided. Bionomic and distributional data are presented for Polyphylla avittata Hardy, P. cavifrons LeConte, P. hirsuta Van Dyke, P. monahansensisHardy, P. petiti Guerin, P. stellata Young, andP. squamiventris Cazier.
The following 10 new species of biting midges are described and illustrated from Dominican amber: Culicoides (Oecacta) antilleanus, C. (0.) brodzinskyi, C. (0.) ambericus, C. (0.) hispanicolus, C. mammalicolus, Brachypogon (B.) american us, B. (Isohelea) dominicanus, B. (Isohelea) prominuloides, Stilobezzia (S.) antilleana and S. (Acanthohelea) dominicana. Two other species, in Nannohelea and Stilobezzia, are described but not named. Stilobezzia (Acanthohelea) wirthicola is a new name for Stilobezzia (A.) succinea Szadziewski from Miocene Saxonian amber, which is preoccupied by the extant Stilobezzia succinea Ingram and Macfie, from Argentina.
Potamobates sumaco new species is described from the Ecuadorian Amazon. Male and female genitalia differentiate P. sumaco from a similar parapatric species, P. williamsi Hungerford. Phylogenetic analysis indicates P. sumaco is closely related to the species of the P. tridentatus group which includes P. williamsi. A distribution map and revised key to Potamobates species are provided.
The Catalogue (Monne, 1993-1994) and Checklist (Monne and Giesbert, 1995) of the Cerambycidae and Disteniidae of the Western Hemisphere represents a necessary, and valuable tool since recompilation of Blackwelder (1946) was made. Species with references (omissions), and without them (new records) are given for some countries.
Acmaeodera tiquilia Westcott and Barr, new species, from Big Bend National Park, Texas is described, figured, and discussed in considerable detail, particularly in relation to the similar and partially sympatric A. recticollis Fall. A neotype is designated for A. quatuordecimspilota Obenberger and that species is synonymized with A. ornata (Fabricius). Additionally, A. gibbula gila Knull is synonymized with A. gibbula LeConte; A. nautica Van Dyke is synonymized with A. simulata Van Dyke.
The larva, pupa, male, and female of Simulium trombetense n. sp. are described and illustrated. This species was collected in the Brazilian Amazon region in the states of Amapa, Amazonas, Para, and Roraima near the edges ofthe crystalline basement-rock formation ofthe Pre-Cambrian Guiana Shield. Keys for larvae, pupae, males, and females of species in the Simulium perflauum Species-Group are presented, as well as new observations on adult, pupal, and larval characters. Evidence is given to support the species status of S. maroniense Floch and Abonnenc, previously considered synonymous with S. rorotaense Floch and Abonnenc.
The section Scelidites ofthe subtribe Luperina is diagnosed and described. A key is provided to separate the genera within this section. Cyphotarsis Jacoby is reduced to a junior synonym of Metacoryna Jacoby. Microscelida, new genus, is erected to include Agelastica viridis Jacoby, Luperus subcostatus Jacoby, Luperus subglabratus Jacoby, Scelidopsis violacea Jacoby, and seven newly described species. A key and diagnoses are provided to enable recognition of each species within this new genus. Scelidacne, new genus, is erected to include a single newly described species.
The genus Erlandia (Cerambycinae: Erlandiini) was described by Aurivillius in 1904, containing a single species, Erlandia inopinata, distributed in Bolivia, Argentina, and Paraguay. Anew species, E. megacephala, from Argentina is described, and illustrated here. A key and distribution map of both species are provided, with a generic diagnosis using characters of both species.
Megacyllene (Megacyllene) cryptofrasciata n. sp. from Argentina is described and illustrated. M. quinquefasciata (Melzer, 1931), and Megacyllene rotundicollis Zajciw, 1963 are transferred from the subgenus Megacyllene Casey 1912 to Sierracyllene Tippmann, 1960. Megacyllene (SierracylZene) tafivallensis n. sp. is described from northwestern Argentina. Dexithea spixii (Laporte & Gory, 1836), and Plagionotus latreillei (Laporte & Gory, 1836) are transferred to Megacyllene (sensu stricto), excluding Dexithea, and Plagionotus from the South American fauna of Clytini. Neoclytus famelicus (Burmeister, 1865) is synonymized with N. ypsilon Chevrolat, 1861. Additional new records of Clytini from Argentina, Paraguay, and Ecuador are also presented here. A key for subgenera and species of Megacyllene is included, with distribution maps for Argentina and nearby countries.