A NOTE ON PELECINUS POLYTURATOR (HYMENOPTERA: PELECINIDAE), A PARASITE OF PHYLLOPHAGA ANXIA (COLEOPTERA: SCARABAEIDAE)

1980 ◽  
Vol 112 (2) ◽  
pp. 219-220 ◽  
Author(s):  
K.P. Lim ◽  
W.N. Yule ◽  
R.K. Stewart

The common June beetle, Phyllophaga anxia (LeConte), is an indigenous pest of agricultural crops in North America (Hammond 1948; Ritcher 1949). A bionomic study and survey for natural enemies of P. anxia was conducted in southern Quebec from 1975 to 1977. Pasture soils were searched for immature stages of P. anxia, and any natural enemies found in situ were collected. A prepupa and pupae of Pelecinus polyturator (Drury) were found in the pasture on several occasions. Previously, P. polyturator had been reported as a parasite of grubs of Phyllophaga spp. (Davis 1919; Petch and Hammond 1925, 1926; Brues 1928; Hammond 1944), and its distribution ranges from Canada to Argentina (Masner 1979).

EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
James P. Cuda ◽  
Patricia Prade ◽  
Carey R. Minteer-Killian

In the late 1970s, Brazilian peppertree, Schinus terebinthifolia Raddi (Sapindales: Anacardiaceae), was targeted for classical biological control in Florida because its invasive properties (see Host Plants) are consistent with escape from natural enemies (Williams 1954), and there are no native Schinus spp. in North America. The lack of native close relatives should minimize the risk of damage to non-target plants from introduced biological control agents (Pemberton 2000). [...]


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Peter Capainolo ◽  
Utku Perktaş ◽  
Mark D. E. Fellowes

Abstract Background Climate change due to anthropogenic global warming is the most important factor that will affect future range distribution of species and will shape future biogeographic patterns. While much effort has been expended in understanding how climate change will affect rare and declining species we have less of an understanding of the likely consequences for some abundant species. The Common Grackle (Quiscalus quiscula; Linnaeus 1758), though declining in portions of its range, is a widespread blackbird (Icteridae) species in North America east of the Rocky Mountains. This study examined how climate change might affect the future range distribution of Common Grackles. Methods We used the R package Wallace and six general climate models (ACCESS1-0, BCC-CSM1-1, CESM1-CAM5-1-FV2, CNRM-CM5, MIROC-ESM, and MPI-ESM-LR) available for the future (2070) to identify climatically suitable areas, with an ecological niche modelling approach that includes the use of environmental conditions. Results Future projections suggested a significant expansion from the current range into northern parts of North America and Alaska, even under more optimistic climate change scenarios. Additionally, there is evidence of possible future colonization of islands in the Caribbean as well as coastal regions in eastern Central America. The most important bioclimatic variables for model predictions were Annual Mean Temperature, Temperature Seasonality, Mean Temperature of Wettest Quarter and Annual Precipitation. Conclusions The results suggest that the Common Grackle could continue to expand its range in North America over the next 50 years. This research is important in helping us understand how climate change will affect future range patterns of widespread, common bird species.


2013 ◽  
Vol 92 (2-3) ◽  
pp. 145-152 ◽  
Author(s):  
E.W.A. Mulder ◽  
P. Formanoy ◽  
W.B. Gallagher ◽  
J.W.M. Jagt ◽  
A.S. Schulp

AbstractFour recently collected tooth crowns of the rare latest Cretaceous (late Maastrichtian) durophagous mosasaur Carinodens belgicus are discussed; the first record from the Atlantic coast of North America (Maryland), and three additional in situ examples from the Maastrichtian type area in the southeast Netherlands and northeast Belgium. Also presented are an updated overview of the material recorded to date, and a discussion of the palaeobiogeographical and palaeoenvironmental distribution of the genus. Towards the end of the Cretaceous, Carinodens appears to have been successful in exploiting the margins of both the proto-Atlantic Ocean and the Tethyan Realm.


Author(s):  
Peter A. Kopp

Hops, the cone of a climbing plant by the same name, are a key ingredient in beer. Brewers use hops to impart flavors and aroma in their malted concoctions, and they value the ingredient’s preservative properties. This chapter explains the global origins and botanical characteristics of the common hop, Humulus lupulus l., used in brewing. It then describes how brewing, and hop agriculture along with it, spread from Europe to temperate regions across the world. Hop growing reached North America along with the early English colonies and fared quite well. By 1800, New York and New England emerged as producers for the global economy.


Author(s):  
William M. Lewis

English is a subtle language with many words that offer fine shades of meaning, but it also can be blunt and unequivocal. Dictionaries were not made for words such as hairdo, ballpark, or pigpen. The law, however, as practiced by Americans, can mutate the meaning of even the humblest word. If the law concerns itself with pigpens, then we must know whether a pigpen still exists when the pigs are removed and, if so, for how long. We must know if a pen originally built for cattle can become a pigpen if occupied by pigs and if pigpens are the same in all parts of the nation. In short, we must have federal guidance, regional interpretations, legal specialists, and technical authorities on pigpens. So it is with wetlands. The chapters of this book will show how troublesome the definition of wetlands has become since the federal government began regulating them. In the meantime, it will suffice to define wetlands informally as those portions of a landscape that are not permanently inundated under deep water, but are still too wet most years to be used for the cultivation of upland crops such as corn or soybeans. Wetlands, in other words, coincide pretty well with the common conception of swamps, marshes, and bogs. Government has had its hand in wetlands for about 150 years. Between the 1850s and 1970s, the federal government was intent on eliminating wetlands. Since then, it has been equally intent on preserving them. An individual who behaved in this manner would seem at least irresponsible. Many critics of federal wetland policy have in fact given the government a sound thrashing for its inconsistency, but the shift from elimination to protection of wetlands has continued nevertheless. Blaming government is the duty of a free people, and also good sport. Even so, the obvious truth about wetland regulation is that government has merely reflected a change in public attitude toward wetlands. Most Americans now believe that wetlands should be saved throughout the nation, except possibly on their own property. Americans did not always feel this way. Most European colonists of North America came from homelands that were essentially tame.


Author(s):  
Patricia J. Vittum

This chapter describes two invasive crane fly species which are pests of turfgrass, particularly in the northwestern and northeastern United States, as well as southern British Columbia and the metropolitan Toronto area in Canada. The European crane fly and the common or marsh crane fly, order Diptera, family Tipulidae, subfamily Tipulinae, have elongated maxillary palpi that distinguish members of this subfamily from other subfamilies. Larvae of invasive crane flies are sometimes called leatherjackets, in part because the pupae are leathery in appearance. Invasive crane flies have a relatively limited distribution in North America, but can cause considerable damage on golf courses, lawns, athletic fields, and sod farms, as well as forage fields and hayfields. The chapter also looks at the frit fly, which belongs to the family Chloropidae.


Author(s):  
Patricia J. Vittum

This chapter looks at Hemipteran pests. Turfgrass-infesting chinch bugs are true bugs in the suborder Heteroptera, family Blissidae, subfamily Blissinae, originally known as the “chinch bug family.” The family Blissidae has about 50 genera and 400 species, fewer than 10 of which are economically important to humans. Four genera are found in North America, including 30 species that attack grasses and sedges, but only the genus Blissus contains serious turfgrass pests. Adult chinch bugs in the family Blissidae are elongate, usually four times as long as broad. Short-winged (brachypterous) and long-winged (macropterous) forms exist in numerous species. The chapter then considers the Blissus chinch bugs, the hairy chinch bug, the southern chinch bug, the western chinch bug, and the common chinch bug.


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