scholarly journals Naturalization and spread of the alien species Ozognathus cornutus (LeConte, 1859) (Coleoptera: Ptinidae: Ernobiinae) in Italy

2021 ◽  
Author(s):  
Giuliano Cerasa ◽  
Gabriella Lo Verde

AbstractOzognathus cornutus (LeConte, 1859) (Coleoptera: Ptinidae: Ernobiinae), species native to North America, is a saproxylophagous species and is known to feed on decaying tissues within conspicuous galls and on vegetal decaying organic material such as dried fruits or small wood shavings and insect excrements in galleries made by other woodboring species. A few years after the first record in 2011, its naturalization in Italy is here reported. The insect was found as successor in galls of Psectrosema tamaricis (Diptera Cecidomyiidae), Plagiotrochus gallaeramulorum, Andricus multiplicatus and Synophrus politus (Hymenoptera Cynipidae). The galls seem to have played an important ecological role in speeding up the naturalization process. The lowest proportion of galls used by O. cornutus was recorded for P. tamaricis (23%), the only host belonging to Cecidomyiidae, while the percentages recorded for the other host species, all Cynipidae forming galls on oaks, were higher: 43.6%, 61.1% and 76.9% in A multiplicatus, S. politus and P. gallaeramulorum, respectively. Although O. cornutus is able to exploit other substrates like dried fruits and vegetables, for which it could represent a potential pest, it prefers to live as a successor in woody and conspicuous galls, which thus can represent a sort of natural barrier limiting the possible damages to other substrates.

1999 ◽  
Vol 36 (8) ◽  
pp. 1257-1266 ◽  
Author(s):  
Corwin Sullivan ◽  
Robert R Reisz

Isolated skeletal elements of the amphibian genus Seymouria were recently discovered at the Richards Spur locality near Fort Sill, Oklahoma, a prolific source of Early Permian tetrapod remains. Five of the seven described bones are of juvenile size and include three neural arches, a humerus, and a femur, whereas the other two are partial vertebrae, apparently adult. All seven are morphologically similar to equivalent skeletal elements in Seymouria specimens previously collected in Europe and North America, apart from features reflecting the early developmental stage of the juvenile bones. The femur and humerus are clearly distinct from those of other seymouriamorphs such as Ariekanerpeton and Kotlassia. The rarity of Seymouria at the Richards Spur locality implies that it was not a regular component of the fauna, and it is also associated with the less markedly terrestrial assemblage that consistently occurs at localities in the southwestern United States. However, its skeletal morphology and occurrence at terrestrial localities such as Richards Spur imply a primarily terrestrial, rather than an amphibious, mode of life. Conflicting biostratigraphic correlations imply that the exact age of the Richards Spur deposits is uncertain, and equivalence to the Arroyo Formation of Texas may be erroneous.


1966 ◽  
Vol 98 (5) ◽  
pp. 527-544 ◽  
Author(s):  
J. F. McAlpine ◽  
J. E. H. Martin

AbstractThe systematic relationships of Sciadoceridae and of the other families of the superfamily Phoroidea, i.e., Platypezidae, Ironomyiidae and Phoridae, are reviewed. A new family, Ironomyiidae, is proposed for Ironomyia nigromaculata White from Tasmania. Two fossil flies in Canadian (Cretaceous) amber, representing two new genera and species of Sciadoceridae, are described and figured. These constitute the first record of the family in North America. The supposed phylogenies of the families of the Phoroidea and of the genera and species of Sciadoceridae are outlined; the evolution and biogeography of the latter family is treated in detail. Keys to the families of the Phoroidea and to the genera and species of Sciadoceridae are provided.


1998 ◽  
Vol 130 (6) ◽  
pp. 905-906 ◽  
Author(s):  
P. Katsoyannos ◽  
M.T. Aliniazee

The parasitic tachinid fly Strongygaster triangulifera (Loew) is widely distributed in North America (Stone et al. 1965). It parasitizes several Coleoptera and sometimes species of other orders such as Lepidoptera, Dermaptera, and Hemiptera (Sabrosky and Braun 1970). Existing records of S. triangulifera found in coccinellid hosts are from eastern North America. One describes low parasitization levels (<1%) in two indigenous species, Coccinella trifasciata perplexa Mulsant and Coleomegilla maculata lengi Timberlake, in Ontario, Canada (Smith 1960). The other existing record describes fluctuating parasitization levels (3.0–31.1% in 1993 and 0–6.5% in 1994) in the exotic species Harmonia axyridis (Pallas) in North Carolina and Virginia (Nalepa et al. 1996).


1992 ◽  
Vol 6 ◽  
pp. 305-305
Author(s):  
Mahito Watabe

The late Miocene Chinese hipparions are morphologically diversified showing similarity to both western Old World's and North American forms. Two Chinese taxa that are phylogenetically related to western Old World's forms are Hipparion fossatum (= H. forstende) from Baode (Shanxi) and H. hippidiodus from Qingyang (Gansu) and Baode. The former is related to H. mediterraneum and the latter to H. urmiense - platygenys from the Turolian localities in the western Old World. H. fossatum and H. hippidiodus are associated with the “dorcadoides” (open-land) and “mixed” faunas in northern China. Hipparion fossatum that is characterized by POF located close to the orbit co-occurs with large and morphologically specialized form, H. dermatorhinum in Baode (Loc.30). H. hippidiodus with reduced POF is discovered with smaller H. coelophyes in Loc. 43, 44 (Baode) and Loc. 115 (Gansu).The hipparions associated with the “gaudryi” (forest) fauna are characterized by well defined and small POF located far from the orbit. Those forms are: H. platyodus from Loc. 70; H. ptychodus from Loc. 73; H. tylodus from Hsi-Liang in Yushe - Wuxiang basins; and H. sefvei from Loc. 12 at Xin-an in Henan province. H. coelophyes from Baode (Loc.43 & 44) and Qingyang (Loc. 115) also show similar facial morphology to the these forms, although it has small size and shallow POF. Those forms are similar in facial and dental morphology to Hipparion sensu stricto and some species of Cormohipparion in North America.The assemblages of Chinese hipparions are composed of two groups whose members are phylogenetically similar to the forms from both western part of Eurasia and North America. The “gaudryi” fauna is considered younger than the other two on the basis of faunal analyses. The similarity in hipparionine taxonomy between northern China and North America in the latest Miocene is an evidences for possible faunal interchange(s) occurred during that period, as suggested by taxonomic analyses on carnivores and proboscideans in eastern half of Eurasia and North America.


1987 ◽  
Vol 58 (4) ◽  
pp. 119-124 ◽  
Author(s):  
Gail M. Atkinson ◽  
David M. Boore

Abstract A stochastic model of ground motion has been used as a basis for comparison of data and theoretically-predicted relations between mN (commonly denoted by mbLg) and moment magnitude for eastern North America (ENA) earthquakes. mN magnitudes are recomputed for several historical ENA earthquakes, to ensure consistency of definition and provide a meaningful data set. We show that by itself the magnitude relation cannot be used as a discriminant between two specific spectral scaling relations, one with constant stress and the other with stress increasing with seismic moment, that have been proposed for ENA earthquakes.


1980 ◽  
Vol 112 (S112) ◽  
pp. 1-92 ◽  
Author(s):  
D.D. Munroe ◽  
Ray F. Smith

AbstractThe systematics of Acalymma sensu stricto of North America including Mexico are revised. Acalymma sensu stricto is defined and distinguished from the other species groups of Acalymma. Sixteen species are discussed including four new species: A. blomorum, A. palomarense, A. invenustum, and A. luridifrons all from Mexico. Three new subspecies of A. blandulum (LeConte) are described: blandulum (LeConte) new status, nigriventre, and yucatanense. Acalymma coruscum costaricense Bechyné is placed as a synonym of A. innubum (Fabricius). Keys are presented to all species and subspecies. Habitus and male genitalia drawings are given for all species and distribution maps are given where appropriate.


1987 ◽  
Vol 119 (1) ◽  
pp. 103-103
Author(s):  
S. Koponen ◽  
M.S. Wasbauer

Anoplius tenuicornis (Tournier) is a holarctic species with a broad distribution both in Europe (Wolf 1967) and North America (Wasbauer and Kimsey 1985). Despite the widespread occurrence of the species, individuals are not frequently encountered, so it is not surprising that biological information on it has not been available for North America and very little for Europe. Richards and Hamm (1939) gave two fragmentary reports of some significance on A. tenuicornis in England, reported as A. piliventris (Morawitz). In one case, cocoons of the wasp were found in dead thistle stems. In the other, an old burrow of Ectemnius continuus (Fabricius) (Sphecidae) (reported as Solenius) in rotten wood contained a series of wasp cocoons and fragments of clubionid spiders, the presumed prey.


1996 ◽  
Vol 1996 ◽  
pp. 125-125
Author(s):  
Duncan Pullar

Simplifying rations and using home grown ingredients can reduce costs of production and, provided productivity is maintained, increase profit. The objective of this experiment was to determine the performance of weaned suckled bull calves on a ration containing field beans (vicia faba), rolled barley, molasses and vitamins and minerals; the ad libitum straw intake was also examined.Twelve Limousin x (Hereford x Friesian) bull calves, 9 months old, were individually fed through two Callan-Broadbent doors, one for the concentrate ration and the other for chopped straw. Wood shavings were used for bedding. The two treatments, fed ad libitumfor 63 days were, barley/ rapeseed meal (B/RSM) and barley/ beans (B/E) and contained 153 ± 5.0 and 166 ± 8.4 g/kg DM CP and 12.6 ± 0.16 and 12.9 ± 0.17 MJ ME/ kg DM respectively.


Episteme ◽  
2021 ◽  
pp. 1-13
Author(s):  
Barry Allen

Abstract Indigenous cultures of North America confronted a problem of knowledge different from that of canonical European philosophy. The European problem is to identify and overcome obstacles to the perfection of knowledge as science, while the Indigenous problem is to conserve a legacy of practice fused with a territory. Complicating the difference is that one of these traditions violently colonized the other, and with colonization the Indigenous problem changes. The old problem of inter-generational stability cannot be separated from the post-colonial problem of sovereignty in the land where the knowledge makes sense. I differentiate the question of the value of knowledge (Part 1), and its content (Part 2). The qualities these epistemologies favor define what I call ceremonial knowledge, that is, knowledge that sustains a ceremonial community. The question of content considers the interdisciplinary research of Indigenous and Traditional Ecological Knowledge, as well as the issue of epistemic decolonization.


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