A new species of Larix (Pinaceae) from the early tertiary of Axel Heiberg Island, Arctic Canada

1991 ◽  
Vol 70 (1-2) ◽  
pp. 89-111 ◽  
Author(s):  
Ben A. LePage ◽  
James F. Basinger
Zootaxa ◽  
2005 ◽  
Vol 897 (1) ◽  
pp. 1
Author(s):  
Carl-Axel Gertsson ◽  
Chris Hodgson

The adult females of four new mealybug species are described from Greenland (Atrococcus groenlandensis, Chorizococcus multiporus and Trionymus bocheri and T. elymus) and a key is provided for all mealybug species known from Greenland; a new species of Coccidae is also described from Greenland (Pulvinaria glacialis). In addition, the adult females of the mealybug Atrococcus altoarcticus Richards and the soft scale Pulvinaria ellesmerensis Richards from arctic Canada are redescribed and compared with their close relatives from Greenland.


1955 ◽  
Vol 87 (1) ◽  
pp. 45-46 ◽  
Author(s):  
G. E. Shewell

Black, uniformly dark brown- or grey-pollinose. Thorax obscurely quadrivittate. Legs short-haired. Wings milk-white in both sexes.Head black; frons and occiput, viewed from above, velvety with dark-brown tinge; bristles and hairs fine, black, the former about as long as third antennal segment less style. Antenna black, slightly shorter than head; style about half as long as third segment. Palpus and proboscis black.


1990 ◽  
Vol 64 (3) ◽  
pp. 373-376 ◽  
Author(s):  
William. J. Zinsmeister ◽  
Jeffrey D. Stilwell

A new species of the late Mesozoic–Cenozoic family Ringiculidae (Ringicula (Ringicula) cockburnensis n. sp.) is described from basal glauconitic beds of late Eocene age of Cockburn Island, Antarctica, and is the first reported occurrence of the family Ringiculidae from the continent of Antarctica. Ringicula (R.) cockburnensis n. sp. most closely resembles R. castigata from the middle Oligocene Duntroonian Stage of New Zealand and provides further support for the strong provinciality (Weddellian Province) that existed along the southern margin of the Pacific during the Late Cretaceous and early Tertiary.


1961 ◽  
Vol 93 (7) ◽  
pp. 497-501 ◽  
Author(s):  
W. R. Richards

This paper includes descriptions of a new species of Iziphya Nevsky and one of Euschizaphis Hille Ris Lambers. The former genus is well represented in North America, but Euschizaphis, which is best known for its association with the Juncaginaceae, has not been previously recorded from the western hemisphere.Iziphya punctatella, new speciesApterous Viviparous Female.–Colour when alive: Ground colour of head and body yellow with black spots around the bases of most of the setae (Fig. 4). Antennae dark except for the basal half of segment III which is yellow; apex of rostrum dark; legs black except apical two-thirds of tibiae which are colourless. Colour when macerated: Essentially as when alive, but yellow areas colourless or nearly so.


2009 ◽  
Vol 46 (7) ◽  
pp. 557-570 ◽  
Author(s):  
Alison M. Murray ◽  
Stephen L. Cumbaa ◽  
C. Richard Harington ◽  
Gerald R. Smith ◽  
Natalia Rybczynski

Percid remains from Pliocene deposits on Ellesmere Island, Arctic Canada, are identified as a species of Sander , similar to the walleye and sauger of North America and the pike–perch of Europe and western Asia. They are named as a new species, Sander teneri . These remains are the most northerly percid elements found to date and suggest the palaeoenvironment was significantly warmer in the Pliocene than it is currently. The fossil remains show the presence in North America of the family Percidae as well as the genus Sander prior to the Pleistocene, indicating a previously proposed Pleistocene immigration from Europe or Asia can be discounted. These fossils contradict an earlier hypothesis that percids, in particular Sander, crossed from Eurasia to North America in the Pleistocene; instead, the fossils show percids were already in the area by the Pliocene.


1990 ◽  
Vol 68 (2) ◽  
pp. 389-390 ◽  
Author(s):  
William B. Muchmore

Many terrestrial arthropods have been reported from arctic regions of North America, but until now, no named pseudoscorpion has been recorded north of latitude 62°. A new species, Wyochernes arcticus, is described from the Yukon Territory at 69°10′N.


1990 ◽  
Vol 122 (1) ◽  
pp. 15-20 ◽  
Author(s):  
James T. Troubridge ◽  
Kenelm W. Philip

AbstractA new species, Colias johanseni, is described. This species has male androconia similar to Colias meadii Edwards, 1871, and many palaearctic, neotropical, and ethiopian species, but the wing pattern is generally similar to that of Colias hecla Lefèbvre, 1836. Thus far, it has been found only on dry tundra at Bernard Harbour, N.W.T., Canada.


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