Dasineura plicatrix (Diptera: Cecidomyiidae): a recent introduction into North America

2009 ◽  
Vol 141 (4) ◽  
pp. 397-400
Author(s):  
Bradley J. Sinclair ◽  
Jasbir Mann ◽  
Janice Elmhirst ◽  
Tammas Grogan ◽  
Caroline Ashekian ◽  
...  
Keyword(s):  
British Columbia ◽  
North America ◽  
Gall Midge ◽  
First Record ◽  
Red Raspberry ◽  
Recent Introduction ◽  
Rubus Laciniatus

AbstractThe first record of a European blackberry leaf gall midge, Dasineura plicatrix (Loew), is confirmed from North America. Specimens were reared from damaged leaves of blackberry, Rubus laciniatus Willd. (thornless variety ‘Chester’), and red raspberry, R. idaeus L. (variety ‘Cascade Delight’) (Rosaceae), in southwestern British Columbia. Photographs of the damage and illustrations of the male terminalia and female ovipositor are presented to assist future determinations.

scholarly journals Biotypic Diversity and Resistance to the Raspberry Aphid Amphorophora agathonica in Pacific Northwestern North America

2012 ◽  
Vol 137 (6) ◽  
pp. 445-451 ◽  
Author(s):  
Michael Dossett ◽  
Chaim Kempler
Keyword(s):  
British Columbia ◽  
North America ◽  
North American ◽  
Rubus Idaeus ◽  
Red Raspberry ◽  
Sources Of Resistance ◽  
Breeding Programs ◽  
Production Region ◽  
Northwestern North America ◽  
Amphorophora Agathonica

Resistance to colonization by the raspberry aphid (Amphorophora agathonica Hottes) has been an important objective in North American red raspberry (Rubus idaeus L.) breeding programs since the 1930s because of its effectiveness in controlling the spread of aphid-transmitted viruses in red raspberry. The most widely used source of resistance in North America has been the gene Ag1 from ‘Lloyd George’. The widespread use of Ag1 to control aphids led to the appearance of a resistance-breaking biotype in British Columbia, Canada, in 1990. Our objective was to identify biotypes of A. agathonica present in the commercial red raspberry production region of southwestern British Columbia and northwestern Washington and determine what sources of resistance may still be effective against this pest. We collected 12 aphid isolates and screened them against 15 raspberry cultivars and four selections. Although it has been widely believed that only two biotypes (regular and Ag1-breaking) of A. agathonica were present in the region, we identified six distinct biotypes and characterized them by their ability or inability to colonize a differential set of raspberry cultivars. This has confirmed the loss of previously recognized and unrecognized sources of resistance in some cultivars. The data also support the presence of a seventh biotype that has not yet been observed. In addition, we confirmed resistance from three sources of wild North American red raspberries that hold up to each of these biotypes. Our results will serve as a guide for future efforts to characterize the prevalence of different aphid biotypes in the region and the identification of new sources of resistance for breeding.

First record of the mite genus Denheyernaxoides Smiley (Acari: Bdelloidea: Cunaxidae) for North America and a redescription of D. americanus Rocha et al.

2019 ◽  
Vol 24 (3) ◽  
pp. 477
Author(s):  
Victoria Jean Nowell ◽  
Marla Dahlie Schwarzfeld
Keyword(s):  
British Columbia ◽  
Nova Scotia ◽  
North America ◽  
Cytochrome C ◽  
Cytochrome C Oxidase ◽  
New Records ◽  
First Record ◽  
Mitochondrial Cytochrome ◽  
World Species ◽  
Mite Genus

Here we present the first records of Denheyernaxoides from North America: D. americanus, collected from coniferous litter, soil, and moss in Nova Scotia, Canada. These new records significantly expand the known distribution of the species. Denheyernaxoides americanus is redescribed to include Canadian specimens and to rectify discrepancies in the species’ description identified during examination of the holotype. The deutonymph of D. americanus is also described. Sequences, representing a 658 bp region of the mitochondrial cytochrome c oxidase subunit I (COI), were obtained from representative specimens collected in Canada. Comparison of these sequences with those from the Barcode of Life database (BOLD) suggests that a second species of Denheyernaxoides may occur in British Columbia, Canada. A revised key to world species of Denheyernaxoides is provided.

scholarly journals Distributional Status of an Introduced Land Snail Discus rotundatus (Rotund Disc, Mollusca: Discidae) in Canada

2016 ◽  
Vol 130 (3) ◽  
pp. 236
Author(s):  
Robert G Forsyth ◽  
John E Maunder ◽  
Donald F McAlpine ◽  
Ronald G Noseworthy
Keyword(s):  
British Columbia ◽  
Nova Scotia ◽  
North America ◽  
New Brunswick ◽  
First Record ◽  
Land Snail ◽  
Avalon Peninsula

First collected in North America in 1937 on the Avalon Peninsula of the Island of Newfoundland, the introduced, primarily European land snail, Discus rotundatus, has now been recorded from the Island of Newfoundland, Nova Scotia, New Brunswick, Quebec, Ontario, and British Columbia. We review all known records from Canada, demonstrate that D. rotundatus is more widespread than was previously recognized on the Island of Newfoundland, and report the first record from New Brunswick.

Ramellogammarus vancouverensis Bousfield (Amphipoda) as an intermediate host for salmonid parasites in British Columbia

1982 ◽  
Vol 60 (5) ◽  
pp. 1100-1104 ◽  
Author(s):  
L. Margolis ◽  
F. Moravec
Keyword(s):  
British Columbia ◽  
North America ◽  
Intermediate Host ◽  
First Record ◽  
Vancouver Island ◽  
Pacific Region ◽  
Salmonid Fishes ◽  
Swim Bladder ◽  
The Pacific ◽  
First Time

Larvae of the nematode Salvelinema walkeri (Ekbaum, 1935) and metacercariae of the trematode Crepidostomum metoecus (Braun, 1900) are recorded for the first time from the amphipod Ramellogammarus vancouverensis Bousfield, 1979 (Amphipoda: Gammaridae).The infected amphipods were collected from De Mamiel Creek, southwestern Vancouver Island, British Columbia. Brief descriptions are given of both parasites, which as adults live in salmonid fishes. This report provides the first record of an intermediate host for S. walkeri, a swim-bladder parasite of salmonids of the Pacific region of North America, and of an intermediate host of a Crepidostomum species in the Pacific region of Canada.

scholarly journals The first record of a trionychid turtle (Testudines: Trionychidae) from the Cretaceous of the Pacific Coast of North America

2018 ◽  
Vol 5 ◽  
Author(s):  
Matthew J. Vavrek ◽  
Donald B. Brinkman
Keyword(s):  
British Columbia ◽  
North America ◽  
Late Cretaceous ◽  
Rocky Mountains ◽  
Pacific Coast ◽  
First Record ◽  
Vancouver Island ◽  
The Pacific ◽  
Western Interior Basin ◽  
Cretaceous Deposits

Trionychid turtles were widespread throughout much of the Western Interior Basin of North America during the Cretaceous, represented by a wide variety of taxa. Despite their widespread abundance east of the Rocky Mountains, they have not previously been reported from Cretaceous deposits along the Pacific Coast of North America. We report here on an isolated trionychid costal from Vancouver Island, British Columbia. The fossil was recovered from the Late Cretaceous (Turonian to Maastrichtian) Nanaimo Group, on Vancouver Island, British Columbia. While the fossil is generically indeterminate, its presence adds an important datapoint in the biogeographic distribution of Trionychidae.  

Ophioxenos lampetrae sp. nov. (Digenea: Paramphistomidae) from ammocoetes of the western brook lamprey (Lampetra richardsoni Vladykov and Follett) in British Columbia, with comments on lamprey host–parasite relationships

1982 ◽  
Vol 60 (10) ◽  
pp. 2514-2520
Author(s):  
M. Beverley-Burton ◽  
L. Margolis
Keyword(s):  
British Columbia ◽  
North America ◽  
Definitive Host ◽  
First Record ◽  
Garter Snakes ◽  
Brook Lamprey ◽  
Host Parasite ◽  
Anterior Extent

Ophioxenos lampetrae sp. nov. (Digenea: Paramphistomidae) from the intestine of ammocoetes of the western brook lamprey (Lampetra richardsoni) in British Columbia, Canada, is described. It is distinguished from other members of the genus, O. dienteros and O. singularis (parasites of reptiles, primarily garter snakes, and amphibians in North America), by having relatively few vitelline folicles of limited anterior extent and a voluminous uterus filling most available intercaecal space. This appears to be the first record of a digenean utilizing a petromyzontid as a definitive host. Some aspects of lamprey host–parasite relationships are discussed.

Lachnellula flavovirens. [Descriptions of Fungi and Bacteria].

2005 ◽  
Author(s):  
D. W. Minter
Keyword(s):  
British Columbia ◽  
Czech Republic ◽  
North America ◽  
Geographical Distribution ◽  
Gall Midge ◽  
Larix Decidua ◽  
Pinus Mugo ◽  
Causal Organism ◽  
The Czech Republic

Abstract A description is provided for Lachnellula flavovirens. This species is generally regarded as a saprobe in Europe, with most observations of it as fruitbodies erumpent from the bark of dead twigs and small branches, although pathogenicity has been demonstrated on Pinus. In the Czech Republic it has been associated with the gall midge Thecodiplosis brachyntera and the needle-inhabiting fungus Lophodermella sulcigena on Pinus mugo. In North America it has been reported as a causal organism of topkill canker in Larix. Information is included on the disease caused by the organism, its transmission, physiological specialization, geographical distribution (Canada (British Columbia), USA (Colorado, Montana), Czech Republic, (?)Estonia, Finland, France and Switzerland) and hosts (Juniperus sp., Larix decidua, Picea spp. and Pinus spp.).

FIRST RECORD OF THE DANDELION LEAF-GALL MIDGE, CYSTIPHORA TARAXACI (KIEFFER, 1888) (DIPTERA: CECIDOMYIIDAE), IN NORTH AMERICA

1993 ◽  
Vol 125 (5) ◽  
pp. 913-918
Author(s):  
D.P. Peschken ◽  
R.J. Gagné ◽  
K.C. Sawchyn
Keyword(s):  
North America ◽  
Gall Midge ◽  
First Record ◽  
Taraxacum Officinale ◽  
North Central

AbstractThe discovery of the European dandelion leaf-gall midge, Cystiphora taraxaci (Kieffer, 1888) (Diptera: Cecidomyiidae), in north-central Saskatchewan, Canada, on dandelion, Taraxacum officinale Weber (Asteraceae), is reported. This is the first record of this insect in North America. Cystiphora taraxaci is similar to Cystiphora canadensis Felt which produces galls on rattlesnake-root, Prenanthes spp., and is known only from females. Separation of the two species was achieved by demonstrating that C. taraxaci produced galls on dandelion but not on Prenanthes spp. The identity of C. taraxaci was confirmed by comparison of specimens collected in Saskatchewan with those in Europe. In Saskatchewan, C. taraxaci occurs over at least 12 000 km2 and is parasitized by Aprostocetus sp. near atticus Graham and Crysonotomyia spp. (Hymenoptera: Eulophidae).

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
Keyword(s):  
North America ◽  
Fruits And Vegetables ◽  
First Record ◽  
The Other ◽  
Ecological Role ◽  
Dried Fruits ◽  
Wood Shavings ◽  
Potential Pest ◽  
Small Wood ◽  
Natural Barrier

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.

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