The spores of Dryopteris filix-mas and related taxa in North America

1974 ◽  
Vol 52 (8) ◽  
pp. 1923-1926 ◽  
Author(s):  
D. M. Britton ◽  
A. C. Jermy
Keyword(s):  
North America ◽  
Electron Micrographs ◽  
North American ◽  
Scanning Electron Micrographs ◽  
Spore Morphology ◽  
European Species ◽  
Scanning Electron

Scanning electron micrographs of spores of Dryopteris filix-mas (L.) Schott, D. abbreviata (DC.) Newman, D. caucasica Fraser-Jenkins & Corley, D. arguta (Kaulf.) Watt, D. marginalis (L.) Gray, and D. fragrans (L.) Schott var. remotiuscula Komarov are presented. North American D. filix-mas is compared with the European species and the origin of this tetraploid is discussed using the available evidence from spore morphology, cytogenetics, and chromatography.

LARVAL SKETCHES OF SOME MICROLEPIDOPTERA, CHIEFLY NORTH AMERICAN

1972 ◽  
Vol 104 (S88) ◽  
pp. 7-83 ◽  
Author(s):  
Margaret Rae MacKay
Keyword(s):  
Electron Micrographs ◽  
North American ◽  
Scanning Electron Micrographs ◽  
Structural Details ◽  
Scanning Electron

AbstractPresented here, with notes, are 55 plates of illustrations: 48 are larval sketches representing 48 species in 18 families of Microlepidoptera; the remaining seven are scanning electron micrographs of larvae of three of the families, Lyonetiidae, Bucculatrigidae, and Stigmellidae. The illustrations suggest interesting affinities in some instances, are useful as identification aids, and show structural details not hitherto observed or recognized as important taxonomically.

NEW SPECIES OF CARDIASTETHUS FIEBER AND MELANOCORIS CHAMPION, AND NEW RECORDS OF EUROPEAN ACOMPOCORIS REUTER AND TEMNOSTETHUS FIEBER IN CANADA (HETEROPTERA: ANTHOCORIDAE)

1977 ◽  
Vol 109 (2) ◽  
pp. 243-248 ◽  
Author(s):  
Leonard A. Kelton
Keyword(s):  
United States ◽  
New Species ◽  
North America ◽  
Electron Micrographs ◽  
New Records ◽  
Western United States ◽  
Scanning Electron Micrographs ◽  
First Time ◽  
Scanning Electron ◽  
Male Genital

AbstractCardiastethus borealis n. sp. is described from Canada, and Melanocoris longirostris n. sp. from Canada and western United States. Two species described from Europe, Acompocoris pygmaeus (Fallen) and Temnostethus gracilis Horvath, are recorded for the first time from North America. Adults and male genital claspers are illustrated and scanning electron micrographs of their osteolar canals are included.

scholarly journals The eriophyid mite Aculops ailanthi Lin, Jin, & Kuang, 1997 (Acariformes: Prostigmata: Eriophyidae) from tree-of-heaven in the United States – new state records and morphological observations

Acarologia ◽  
2021 ◽  
Vol 61 (1) ◽  
pp. 121-127
Author(s):  
Michael J. Skvarla ◽  
Ron Ochoa ◽  
Andrew Ulsamer ◽  
James Amrine
Keyword(s):  
United States ◽  
North America ◽  
Electron Micrographs ◽  
The United States ◽  
Ailanthus Altissima ◽  
Scanning Electron Micrographs ◽  
Tree Of Heaven ◽  
And Control ◽  
Scanning Electron ◽  
Female Genital

We report Aculops ailanthi Lin, Jin, and Kuang, 1997 (Acariformes: Trombidiformes: Prostigmata: Eriophyidae) from Pennsylvania and West Virginia, USA; present the first scanning electron micrographs of the species in North America and discuss morphological observations that clarify features observed in slide-mounted specimens, such as the number ridges on female genital flaps; and briefly discuss symptoms and control of an A. ailanthi infestation on greenhouse-grown tree-of-heaven, Ailanthus altissima (Mill.) Swingle (Sapindales: Simaroubaceae).

A revision of the genus Pachyrhinus Schӧnherr 1823 (Coleoptera: Curculionidae, Entiminae) in the Nearctic Region

Zootaxa ◽  
2021 ◽  
Vol 4999 (6) ◽  
pp. 501-533
Author(s):  
JOSEPH BENZEL ◽  
DONALD E. BRIGHT
Keyword(s):  
North America ◽  
Electron Micrographs ◽  
North American Species ◽  
Scanning Electron Micrographs ◽  
Scale Morphology ◽  
Diagnostic Characters ◽  
The North ◽  
Pinus Spp ◽  
Nearctic Region ◽  
Scanning Electron

The North American species of the broad-nosed weevil genus Pachyrhinus Schönherr 1823 (Coleoptera: Curculionidae, Entiminae) are revised. Three species of Pachyrhinus are here recognized in North America: P. elegans (Couper 1865), P. californicus (Horn 1876), and P. cinereus (Casey 1888). Pachyrhinus lateralis (Casey 1888) and P. miscix (Fall 1901) are here designated as synonyms of P. elegans. Pachyrhinus crassicornis (Casey 1888) and P. albidus (Fall 1901) are here designated synonyms of P. cinereus (Casey 1888) The previously proposed synonymy of P. ferrugineus (Casey 1888) with P. californicus was confirmed. This revision includes detailed images of diagnostic characters as well as scanning electron micrographs of scale morphology for all species. A key to the Nearctic species of Pachyrhinus is provided. All Nearctic species of Pachyrhinus are considered minor pests of Pinus spp. [Pinaceae].

Illustrated key to genera and catalogue of Mymaridae (Hymenoptera) in America north of Mexico

Zootaxa ◽  
2020 ◽  
Vol 4773 (1) ◽  
pp. 1-411 ◽  
Author(s):  
JOHN T. HUBER ◽  
JENNIFER D. READ ◽  
SERGUEI V. TRIAPITSYN
Keyword(s):  
New Species ◽  
Electron Micrographs ◽  
North American ◽  
Valid Species ◽  
Scanning Electron Micrographs ◽  
Undescribed Species ◽  
Identification Keys ◽  
The North ◽  
Three New Species ◽  
Scanning Electron

Identification keys for females, and for males where known, to the 39 genera and 11 subgenera of Mymaridae in America north of Mexico are given. The genera are illustrated with over 1010 photographs and/or scanning electron micrographs. The 202 currently named and valid species reported from America north of Mexico are catalogued. Reliable host records are reported for 16 genera and almost 90 species from rearings in the region. The five genera represented by more than one subgenus in the region are: Anagrus Haliday, Anaphes Haliday, Erythmelus Enock, Kalopolynema Ogloblin, and Polynema Haliday. Five other genera are represented only by unnamed and possibly undescribed species. About 1000 literature references, mainly the North American ones, are listed. Three new species are described: Callodicopus floridanus Huber, sp. n., Neostethynium americanum Huber, sp. n., and Stephanocampta xanthogaster Huber, sp. n. Cosmocomoidea marilandica (Girault), stat. rev., is placed in synonymy under C. dolichocerus (Ashmead). Platypatasson Ogloblin is given subgeneric status as Platystethynium (Platypatasson Ogloblin), stat. rev. Corrections and additions to the mymarid fauna of Mexico by Guzmán-Larralde et al. (2017) are also given. 

The Cheilanthes hirta complex and allied species (Adiantaceae/Pteri­daceae) in southern Africa

Bothalia ◽  
1988 ◽  
Vol 18 (1) ◽  
pp. 57-77 ◽  
Author(s):  
W. B. G. Jacobsen ◽  
N. H. G Jacobson
Keyword(s):  
Geographical Distribution ◽  
Electron Micrographs ◽  
Southern Africa ◽  
Scanning Electron Micrographs ◽  
Spore Morphology ◽  
Line Drawings ◽  
New Varieties ◽  
New Form ◽  
Distribution And Ecology ◽  
Scanning Electron

The very variable complex of plants until now ascribed to Cheilanthes hirta Swartz, together with some derived or allied species, is investigated. The type of the species as established by N. C. Anthony (1984), is accepted. Three new varieties are distinguished: Cheilanthes hirta Swartz var. brevipilosa W. N. Jacobsen, var. inferacampestris W. N.Jacobsen and var. nemorosa W. N. Jacobsen. One new form of Cheilanthes hirta var. brevipilosa W. N. Jacobsen is recognized: forma waterbergensis W. N. Jacobsen. Var.  laxa Kunze (1836) is given the new status of forma:  Chei­lanthes hirta var. brevipilosa W. N. Jacobsen forma laxa (Kunze) W. N. Jacobsen. Three allied species are discussed and included in the key to all taxa mentioned. Taxa are described and information given includes notes on distribution and ecology. Special attention is paid to spore morphology. Most taxa are illustrated by a habit photo, and all by line drawings and scanning electron micrographs (SEM) of the spores. Possible evolutionary conclusions, particularly on the nature of the spores and on frond dimensions in relation to geographical distribution and climate are discussed.

Pollen morphology in the genus Myriophyllum (Haloragaceae)

1978 ◽  
Vol 56 (8) ◽  
pp. 976-982 ◽  
Author(s):  
S. G. Aiken
Keyword(s):  
Electron Micrographs ◽  
North American ◽  
Pollen Morphology ◽  
North American Species ◽  
Pollen Size ◽  
Scanning Electron Micrographs ◽  
Pollen Maturation ◽  
Pore Number ◽  
Scanning Electron ◽  
Made In

Pollen size and aperture number are reported for nine North American species of Myriophyllum. For seven of these, scanning electron micrographs are provided. The wall sculpture of M. alterniflorum is microrugulate and that of eight other species is microverrucate. In M. exalbescens and M. tenellum, microvermcae develop late in pollen maturation. Myriophyllum farwellii, a species that flowers underwater, has asymmetrically arranged pores and variation in pore number. An estimated 90% of M. farwellii pollen, from collections made in 1975 and 1976, had collapsed: the apparently sterile grains suggest that this species is at least partly apomictic. A pollen key to the species is provided.

scholarly journals Highly disjunct and highly infected millipedes – a new cave-dwelling species of Chiraziulus (Diplopoda: Spirostreptida: Cambalidae) from Iran and notes on Laboulbeniales ectoparasites

2015 ◽  
Author(s):  
Ana Sofia P.S. Reboleira ◽  
Mohamad Javad Malek Hosseini ◽  
Saber Sadeghi ◽  
Henrik Enghoff
Keyword(s):  
North America ◽  
East Asia ◽  
Electron Micrographs ◽  
Type Species ◽  
Intraspecific Variability ◽  
Type Material ◽  
Scanning Electron Micrographs ◽  
Monotypic Genus ◽  
First Time ◽  
Scanning Electron

Chiraziulus is a highly disjunct, hitherto monotypic genus of cambalid millipedes, geographically isolated in Iran by more than 7000 km from its presumed closest relatives in East Asia and North America. Recent fieldwork in caves of Iran has provided several specimens of this genus, allowing the description of Chiraziulus troglopersicus sp. nov. The intraspecific variability of the type species, C. kaiseri Mauriès, 1983, is illustrated with scanning electron micrographs. Chiraziulus is characterized by exceedingly long microtrichose gonopod flagella which from their insertion points on the posterior face of the anterior gonopod coxites first point distad instead of basad or basad-posteriad as in most other flagelliferous Cambalidea (and Julida), then traverse a groove on the mesal surface of the anterior gonopod coxites, making a full (360°) loop. The same feature is also illustrated for the first time in the genus Cambala. The patterns and prevalence of the infection with a species of ectoparasitic fungus of the genus Rickia (order Laboulbeniales) in the type material of C. kaiseri is described. An updated review of the cave-adapted fauna of Iran is given.

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