The Mountain Forests of North America and Their Environments

1990 ◽  
pp. 47-86 ◽  
Author(s):  
W. D. Billings
Keyword(s):  
North America ◽  
Mountain Forests

Review of the Sogdini of North and Central America (Coleoptera: Leiodidae: Leiodinae) with descriptions of fourteen new species and three new genera

Zootaxa ◽  
2009 ◽  
Vol 2102 (1) ◽  
pp. 1-74 ◽  
Author(s):  
STEWART B. PECK ◽  
JOYCE COOK
Keyword(s):  
New Species ◽  
North America ◽  
Central America ◽  
New Genus ◽  
Valid Species ◽  
New Combinations ◽  
New Genera ◽  
Mountain Forests ◽  
Species Status ◽  
New Synonyms

This paper is a review and revision of the tribe Sogdini (Coleoptera: Leoididae: Leiodinae) of North and Central America. It covers the following genera: Triarthron Märkel, 1840, with one species; Hydnobius Schmidt, 1841, with seven species; Stereus Wollaston, 1857, new for North America, with one species; Sogda Lopatin, 1961, new for North America, with two species; Kalohydnobius new genus, with three species; Macrohydnobius new genus, with six species; and Platyhydnobius new genus, with eight species. The species are inhabitants of northern and mountain forests or sandy habitats. Larvae and adults probably feed on subterranean fungi. The following new synonyms are recognized: Triarthron pennsylvanicum Horn, 1883 = T. lecontei Horn, 1868; Hydnobius luggeri Hatch, 1927 = H. substriatus LeConte, 1863; Hydnobius lobatus Hatch, 1936 = H. longidens LeConte, 1879; Hydnobius longulus LeConte, 1879 = Sogda obtusa (LeConte,1879); Hydnobius femoratus Hatch, 1936 = Kalohydnobius strigilatus (Horn, 1880); and Hydnobius stacesmithi Hatch, 1957 = Macrohydnobius matthewsii (Crotch, 1874). Hydnobius kiseri Hatch, 1936 and H. longidens LeConte, 1879 are resurrected from synonymy to valid species status. The following new combinations are established: Sogda obtusa (LeConte, 1879), ex Hydnobius; Kalohydnobius strigilatus (Horn, 1880), ex Hydnobius; Macrohydnobius contortus (Hatch, 1957), ex Hydnobius; M. crestonensis (Hatch, 1957), ex Hydnobius; M. matthewsii (Crotch, 1874), ex Hydnobius; M. simulator (Brown, 1932), ex Hydnobius; Platyhydnobius arizonensis (Horn, 1885), ex Hydnobius; and P. validus (Brown1932), ex Hydnobius. Lectotypes are designated for Hydnobius substriatus LeConte, 1863; H. pumilus LeConte, 1879; H. obtusus LeConte, 1879; H. longulus LeConte, 1879; H. strigilatus Horn, 1880 and H. matthewsii Crotch, 1874. New species are Hydnobius acarinus, H. autumnalis, Stereus arenarius, Sogda enigma, Kalohydnobius californicus, K. dentatus, Macrohydnobius montanus, M. tibiocalcaris, Platyhydnobius andersoni, P. bicolor, P. calvario, P. howdenorum, P. latigra, and P. newtonorum.

scholarly journals Tree-related microhabitats are similar in mountain forests of Europe and North America and their occurrence may be explained by tree functional groups

Trees ◽  
2020 ◽  
Vol 34 (6) ◽  
pp. 1453-1466
Author(s):  
T. Asbeck ◽  
M. Basile ◽  
J. Stitt ◽  
J. Bauhus ◽  
I. Storch ◽  
...  
Keyword(s):  
North America ◽  
Functional Groups ◽  
Tree Species ◽  
Mountain Forests ◽  
Managed Forests ◽  
Site Factors ◽  
Future Studies ◽  
European Mountain

Abstract Key message Drivers of the abundance and richness of tree-related microhabitats are similar in mountain forests of Europe and North America and their occurrence may be explained by tree functional groups. Abstract A common approach to support forest-dwelling species in managed forests is to preserve valuable habitat trees. To assess the quality of habitat trees, a hierarchical typology of tree-related microhabitats (TreMs) is applied in the European context for inventory standardization. The first aim of this study was to evaluate whether it is possible to use this hierarchical typology as a standard protocol regardless of location, which is important for potentially standardizing future studies of TreMs, by testing whether the typology could be applied to the western North American mountain forests of Idaho. The second aim of the study was to analyse drivers that influence TreMs in forests of the region. Thirdly, we assessed whether the occurrence of TreMs could be explained by functional groups of trees across the western mountain forests of Idaho and Central European mountain forests, using TreM inventory data previously collected in the Black Forest, Germany. Abundance and richness of TreMs per tree were analyzed as a function of tree species, live status (dead vs. live trees), diameter at breast height (DBH), and site factors (latitude and altitude). Our results show that the TreM typology could be applied with slight modifications in the forests of Idaho. The abundance and richness of TreMs per tree increased with DBH. Snags offered more TreMs per tree than live trees. We were able to group tree species from the two continents in functional groups that were related to the occurrence of certain TreMs. Tree functional groups offer an opportunity to predict the role of certain tree species for habitat provision through TreMs. Combinations of trees from different functional groups could be used to optimize provisioning of TreMs within forest stands.

NEW SYNONYMY OF RHADIURGUS VARIABILIS (ZETTERSTEDT) (DIPTERA: ASILIDAE) WITH NOTES ON MORPHOLOGY, NATURAL HISTORY, AND GEOGRAPHICAL VARIATION

1993 ◽  
Vol 125 (2) ◽  
pp. 337-354
Author(s):  
Robert A. Cannings
Keyword(s):  
North America ◽  
Geographical Variation ◽  
Eastern Siberia ◽  
Mountain Forests ◽  
Ecological Data ◽  
Western Cordillera ◽  
Geographical Regions ◽  
Robber Flies ◽  
New Synonymy ◽  
Dark Body

AbstractRhadiurgus variabilis (Zetterstedt 1838), a robber fly described from Europe, and Nigrasilus nitidifacies Hine 1908, described from North America, are newly synonymized. Lectotypes are designated for Asilus variabilis Zetterstedt and N. nitidifacies Hine. Some new descriptive material, including measurements and colour data, is given for five geographical regions: Europe, Eastern Siberia, Alaska/Yukon, Western Cordillera, and Boreal North America. Illustrations of male and female genitalia are presented. The species’ range is clarified and ecological data are summarized. Rhadiurgus variabilis inhabits northern and mountain forests from Scotland eastward to Labrador; it is one of the world’s most northerly ranging robber flies. Variation in the species includes an increasing proportion of dark body setae in individuals from Eurasia eastward through North America.

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