A REVISION OF THE NEARCTICAMELETUSMAYFLIES BASED ON ADULT MALES, WITH DESCRIPTIONS OF SEVEN NEW SPECIES (EPHEMEROPTERA: AMELETIDAE)

1996 ◽  
Vol 128 (2) ◽  
pp. 293-346 ◽  
Author(s):  
Jacek Zloty

AbstractA systematic revision of North American species of the genusAmeletus, excluding parthenogenetic species, is presented. Seven new species are described (A.andersoni,A.bellulus,A.doddsianus,A.edmundsi,A.majusculus,A.pritchardi, andA.tolae), separate keys are given to western and eastern species, annotated accounts of all 30 presently recognized bisexual species are provided, taxonomic characters are illustrated, and distribution data are presented for all species. The following nomenclatural changes are proposed:Ameletus aequivocusis considered a junior synonym ofA.sparsatus; A.alticolusandA.celeroidesjunior synonyms ofA.celer;A.connectinaandA.connectusjunior synonyms ofA.velox;A.facilisa junior synonym ofA.vancouverensis;A.montaa junior synonym ofA.similior;A.querulusa junior synonym ofA.shepherdi. The specific status ofA.tuberculatusis questioned and it is provisionally considered to be the same asA.celer.

1981 ◽  
Vol 113 (9) ◽  
pp. 801-806
Author(s):  
Henri Goulet

AbstractDiscovery of new external structures permit easier separation of species of Phymatocera for both sexes. A key is given and a phylogeny is reconstructed for all species. The name P. rusculla (MacGillivray) is a junior synonym of P. offensa (MacGillivray).


1992 ◽  
Vol 124 (6) ◽  
pp. 1063-1074 ◽  
Author(s):  
Glenn B. Wiggins ◽  
Robert W. Wisseman

AbstractThree new species are described in the caddisfly family Uenoidae: Neothremma prolata, from Hood River County, Oregon; Neothremma mucronata from Lassen County, California; and Farula constricta from Multnomah County, Oregon. Following examination of the holotypes of several species, misinterpretation of the male genitalia morphology of Farula wigginsi Denning is corrected, leading to the recognition of that name as a junior synonym of F. petersoni Denning. Interpretation of male genitalic morphology in the original description of F. geyseri Denning is revised. Phylogenetic relationships are inferred from male genitalic morphology for the species of Neothremma and Farula. Biogeographic patterns of the species in both genera are highly congruent with the phylogenies.


1988 ◽  
Vol 120 (4) ◽  
pp. 361-387 ◽  
Author(s):  
Y. Bousquet

AbstractThe genusDyschiriusincludes 56 North American species which are arranged in 13 species groups. Keys are provided for the species groups and the species. Four new species are described:D.sculptusBousquet (type locality: Pass-a-Grille Beach, Florida);D.ferrugineusBousquet (type locality: Goose Island State Park, Texas);D.larochelleiBousquet (type locality: 6 mi. S Lake Placid, Florida); andD.comatusBousquet (type locality: Highlands Hammock, Florida). Six species names are placed in synonymy for the first time. They are (with the junior synonym listed first):D.arizonicusVan Dyke 1943 =D.interiorFall 1922;D.duplicatesFall 1901 =D.affinisFall 1901;D.desertusFall 1925 =D.perversusFall 1922;D.subpunctatusHatch 1949 =D.sphaericollis(Say 1825);D.basalisLeConte 1857 andD.transmarinusMannerheim 1853 =D.integerLeConte 1851. The adult and larval character states of the genus are listed and comments are provided for each species group.


1972 ◽  
Vol 104 (10) ◽  
pp. 1643-1647
Author(s):  
C. D. Dondale ◽  
J. H. Redner

AbstractPerimones britteni (Jackson, 1913) is regarded as conspecific with, and therefore a junior synonym of, Minyriolus arenarius (Emerton, 1911). Hence, Perimones arenarius (Emerton) is Holarctic. Contrary to common usage, Walckenaera spiralis (Emerton, 1882) is not a synonym of W. vigilax (Blackwall, 1853), the former applying to a North American species and the latter to a European. Cochlembolus formicarius sp. n. is described from nests of the western thatching ant, Formica obscuripes Forel, in Washington State.


Zootaxa ◽  
2011 ◽  
Vol 2983 (1) ◽  
pp. 39 ◽  
Author(s):  
IVAN L. F. MAGALHÃES ◽  
ADALBERTO J. SANTOS

In this paper, M. yanomami n. sp., from Brazilian Amazonia, Chaetacis bandeirante n. sp., from Central Brazil, and the males of M. gaujoni Simon, 1897 and M. ruschii (Mello-Leitão, 1945) n. comb. , respectively from Ecuador and Brazil, are described and illustrated for the first time. An ontogenetic series of the last development stages of both sexes of Micrathena excavata (C. L. Koch, 1836) is illustrated and briefly described. Adult females are larger and have longer legs and larger abdomens than adult males. Probably females undergo at least one additional moult before adulthood, compared to males. Micrathena ornata Mello-Leitão, 1932 is considered a junior synonym of M. plana (C. L. Koch, 1836), and M. mastonota Mello-Leitão 1940 is synonymized with M. horrida (Taczanowski, 1873). Acrosoma ruschii Mello-Leitão, 1945 is revalidated, transferred to Micrathena and considered a senior synonym of M. cicuta Gonzaga & Santos, 2004. Chaetacis necopinata (Chickering, 1960) is recorded for Brazil for the first time. Chaetacis incisa (Walckenaer, 1841) is considered a nomen dubium.


1965 ◽  
Vol 97 (2) ◽  
pp. 193-198 ◽  
Author(s):  
G. R. Hopping

AbstractGroup VII of North American Ips contains I. thomasi, new species, I. borealis Swaine and I. swainei R. Hopping. They are less than 4.0 mm. long and females have the front of the head or at least the vertex smooth and shining, impunctate, or with very fine sparse punctures; males are more coarsely granulate-punctate on the frons. The species are described and a key is given. All breed in Picea in Canada and northern United States.


1991 ◽  
Vol 123 (3) ◽  
pp. 501-558 ◽  
Author(s):  
Ian M. Smith

AbstractMorphological, life history, and distributional data are presented for North American species of the subgenus Stygomomonia (sensu stricto) Szalay, 1943. Adults of the seven previously recognized species are redescribed, and deutonymphs of five of these species are described for the first time. Two species, S. (s.s.) neomexicana Cook and S. (s.s.) occidentalis Cook are substantially revised on the basis of an examination of the types and extensive series of newly collected specimens. Three new species are described, S. (s.s.) californiensis on the basis of deutonymphs and adults, and S. (s.s.) imamurai and S. (s.s.) cooki on the basis of adults. A new diagnosis of the subgenus is proposed and discussed, the relationships of the various species are discussed, and a key to deutonymphs and adults of North American species is presented. New distributional data are presented for all species, and dispersal patterns from Pleistocene refugia are discussed.


Author(s):  
Mary L. Cole

Chondrocyclus Ancey, 1898 is a genus of nine species of African operculate land snails restricted to indigenous forest and mesic thicket. Worn specimens (i.e., without a periostracum or operculum), on which some species descriptions and records were based, appear to be indistinguishable morphologically. A comprehensive revision of Chondrocyclus s.l. is provided here based on comparative morphological examinations of the shell, protoconch, periostracum, operculum, radula and penis, and on mitochondrial genes cytochrome c oxidase subunit I and 16S rRNA. Two genus-level lineages are recognised, Chondrocyclus s.s. and Afrocyclus gen. nov. Revised species descriptions are given for seven species. Two species, C. meredithae Bruggen, 1983 and C. chirindae Bruggen, 1986 both from north of South Africa, are removed from Chondrocyclus. Twelve new species are described: C. herberti sp. nov., C. silvicolus sp. nov., C. amathole sp. nov., C. pondoensis sp. nov., C. devilliersi sp. nov., C. pulcherrimus sp. nov., C. cooperae sp. nov., C. langebergensis sp. nov., C. kevincolei sp. nov., A. oxygala gen. et sp. nov., A. potteri gen. et sp. nov. and A. bhaca gen. et sp. nov. This is the first detailed systematic revision of an Afrotropical cyclophorid group to include morphological and molecular data. This study complements research on other taxa of low-vagility forest-dwelling habitat specialists by providing comparative distribution data for an independent, widespread group. Such evidence is urgently needed for conservation of South Africa’s threatened forest biome.


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