Spore morphology and taxonomy of Isoetes in northeastern North America

1983 ◽  
Vol 61 (12) ◽  
pp. 3140-3163 ◽  
Author(s):  
L. Kott ◽  
D. M. Britton
Keyword(s):  
North America ◽  
Spore Morphology ◽  
Key To Species ◽  
Northeastern North America ◽  
Spore Size ◽  
Distribution Maps

Taxonomy of Isoetes L. largely rests on megaspore and microspore wall ornamentation and spore size. These characters have been reevaluated and the range of their variability is described (SEM photographs). Eight species of Isoetes are recognized for northeastern North America: I. macrospora, I. hieroglyphica, I. tuckermanii, I. riparia, I. acadiensis, I. echinospora, I. eatonii, and I. engelmannii. Each species is provided with a revised list of synonyms, description, ecological notes, representative specimens, and distribution maps. A key to species is provided.

scholarly journals Review of the genus Ceraturgus Wiedemann (Diptera: Asilidae) in North America north of Mexico

Zootaxa ◽  
2008 ◽  
Vol 1766 (1) ◽  
pp. 1 ◽  
Author(s):  
JEFFREY K. BARNES
Keyword(s):  
United States ◽  
North America ◽  
Type Species ◽  
Eastern United States ◽  
Key To Species ◽  
Distribution Maps ◽  
Species Descriptions ◽  
New Synonymy ◽  
North America North

The species of Ceraturgus occurring in the eastern United States and Canada are reviewed. A key to species, descriptions, illustrations of wings and some genitalic features, and distribution maps are presented. Ceraturgus fasciatus is resurrected from synonymy with Ceraturgus cruciatus, and Ceraturgus mabelae is reduced to synonymy with Ceraturgus nigripes (new synonymy). Ceraturgopsis is resurrected, assigned subgeneric rank, and Ceraturgus cornutus is fixed as type species. This work is dedicated to the memory of one of America’s foremost asilidologists, Joseph Wilcox.

scholarly journals Revision of Lineostethus (Heteroptera: Pentatomidae: Discocephalini)

2018 ◽  
Vol 35 ◽  
pp. 1-24
Author(s):  
Thereza de Almeida Garbelotto ◽  
Ana Paula Leite Kochenborger ◽  
Luiz Alexandre Campos
Keyword(s):  
New Species ◽  
Costa Rica ◽  
North America ◽  
Central America ◽  
Genital Morphology ◽  
Key To Species ◽  
Distribution Maps ◽  
Heteroptera Pentatomidae ◽  
Generic Description ◽  
Holotype Male

LineostethusRuckes, 1966 has four species,L.clypeatus(Stål, 1862),L.graziaeHildebrand & Becker, 1982,L.marginellus(Stål, 1872), andL.tenebricornis(Ruckes, 1957); mostly restricted to Central America, but with distribution records in the southern North America.Lineostethusis one of the discocephaline genera with discoid head. The last review of the genus, from the 1980’s, focused on the genital morphology and failed to provide updated descriptions or a key to species. We had access to material from different collections, including several specimens representing new species ofLineostethus, and males ofL.marginelluswhich shows important variations in genital morphology. Here we update the generic description ofLineostethusand its known species and describe the new speciesLineostethusacuminatussp. nov. (holotype male in DZUP: Costa Rica, Guanacaste),Lineostethusauritussp. nov. (holotype male in AMNH: Mexico, Oaxaca),Lineostethusotarussp. nov. (holotype male in AMNH: Mexico, Michoacán) andLineostethussinuosussp. nov. (holotype male in DZUP: Mexico, Yucatán). Additionally, we provide identification keys and distribution maps.

REVISION OF THE MACROPSINI AND NEOPSINI OF THE NEW-WORLD (RHYNCHOTA: HOMOPTERA: CICADELLIDAE), WITH NOTES ON INTERSEX MORPHOLOGY

1983 ◽  
Vol 115 (S123) ◽  
pp. 5-223 ◽  
Author(s):  
K. G. A. Hamilton
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
New World ◽  
Morphological Data ◽  
Western Canada ◽  
Northeastern North America ◽  
Distribution Maps ◽  
Polymorphic Species ◽  
Northwestern North America

AbstractThe Neopsini encompasses two genera, both exclusively Neotropical: Neopsis Oman (5 species) and Nollia n. gen. (2 species). Neopsis amazonica n. sp., Neopsis tumidifrons n. sp., Neopsis magna n. sp. (Brazil), and Nollia rustica n. sp. (Chile) are described, and the genera and species of the Neopsini are keyed.The New-World Macropsini encompasses five genera: Pediopsis Burmeister (1 species), Pediopsoides Matsumura (2 species), Reticopsis Hamilton (2 species), Macropsis Lewis (55 species), and Oncopsis Burmeister (36 species). Biological and morphological data are used to define the species in this taxonomically difficult tribe, with the result that 45 new species are described: Macropsis acapulco, M. dimorpha, M. igniscutellata, M. mexicana, M. oncopsimilis, and M. zebra from Mexico; Macropsis aureocephala, M. californiensis, M. ferrax, M. inversalis, M. palustris, M. pulchra, Oncopsis arizona, O. aureostria, and Reticopsis udrobates from southern California and Arizona; Oncopsis insignifica, O. mica, and O. tangenta from Utah; Macropsis borealis, M. rufescens, Oncopsis albicollis, O. incidens, O. interior, O. juno, O. marilynae, O. monticola, and O. tenuifoliae from northwestern North America; Macropsis dixiensis and O. infumata from southeastern North America; Macropsis decisa, M. jocosa, M. microceps, M. tunicata, M. xena, Oncopsis citrella, O. concurrens, O. dentata, O. deluda, O. prolixa, O. quebecensis, and O. vartyi from northeastern North America; and Macropsis deviridis, Oncopsis citra, O. crispae, and O. prairiana from Canada. Five new subspecies are described: O. cinctifrons kootenensis, O. prairiana ferrosus, and O. prairiana occidentalis, all from southern British Columbia; Oncopsis nigrinasi florida from Florida; and Macropsis deviridis alberta from western Canada. Five new synonymies are created. Keys to all taxa, host associations, and distribution maps are provided and the colour phases of the various polymorphic species are analyzed.The morphology and significance of intersex individuals of Oncopsis spp. are discussed.

FABRIC OF THE LITHOSPHERE IN NORTHEASTERN NORTH AMERICA

2019 ◽  
Author(s):  
Yiran Li ◽  
◽  
Vadim Levin ◽  
Zhenxin Xie
Keyword(s):  
North America ◽  
Northeastern North America
Sign in / Sign up

Export Citation Format

Share Document