The systematic status and geographical distribution of<i>Camisia segnis</i>(Acari : Oribatida)

André, H. M.; Lebrun, P.; Leroy, Suzanne A.G.

doi:10.1080/01647958408683369

Cited by 8 publications

(2 citation statements)

References 4 publications

(3 reference statements)

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“…While T. cf. trimaculatus is known to dwell in this habitat (Strenzke 1952;Pschorn-Walcher & Gunhold 1957), C. segnis is usually found in corticolous lichens (Lebrun 1976;André et al 1984). Scutovertex cf.…”

Section: Nematodesmentioning

confidence: 99%

The influence of air pollution on moss-dwelling animals: 1. Methodology and composition of flora and fauna

Steiner¹

1994

Revue Suisse De Zoologie.

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Section: Nematodesmentioning

confidence: 99%

The influence of air pollution on moss-dwelling animals: 1. Methodology and composition of flora and fauna

Steiner¹

1994

Revue Suisse De Zoologie.

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“…The remaining are direct feeders of eastern hemlock but were found not to be impacted by the imidacloprid treatments, but will likely be impacted by the effects of the elongated hemlock scale and A. tsugae as they move into these areas. 1 Distributions are from (Jacot 1936, Meinander 1974, Andre et al 1984, Drooz 1985, Hart 1986, Mockford 1993, Stelzl and Devetak 1999, Hébert et al 2003, Frederick and Gering 2006 Keywords: Eastern hemlock, hemlock woolly adelgid, arthropods, invasive species, dependent species Introduced species can and do have a devastating effect on resident organisms (Wagner 2007). The hemlock woolly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae) and the elongated hemlock scale, Fiorinia externa Ferris (Hemiptera: Diaspididae) are two of these threats.…”

Section: Discussionmentioning

confidence: 99%

Temporal and Spatial Distribution of Imidacloprid and the Arthropod Fauna Associated with Eastern Hemlock, Tsuga canadensis (L.) Carr

Turcotte¹

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Eastern hemlock, Tsuga canadensis (L.) Carr (Pinales: Pinaceae), is an important component of both the urban and forest landscape of the eastern United States. Eastern hemlock has been heavily impacted by the introduction of the hemlock woolly adelgid, Adelges tsugae (Annand) (Hemiptera: Adelgidae). Two goals of this research were (1) to determine the effect of treatment timing (spring versus fall) and application method (tree injection versus soil injection) on the spatial and temporal distribution of imidacloprid the primary insecticide used to treat A. tsugae and (2) to assess the impact of application method and timing of imidacloprid treatments on the arthropods associated with eastern hemlock. The results of this study showed that xylem fluid concentrations of imidacloprid were significantly (P < 0.05) higher for spring applications than for fall applications, and for trunk injections than soil injections in the first year post treatment. A diverse group of arthropods, making up 393 species, were collected by branch beating the lower crowns of TABLE OF CONTENTS

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Revision of the oribatid mite genus Austronothrus Hammer (Acari:Oribatida):sexual dimorphism and a re-evaluation of the phylogenetic relationships of the family Crotoniidae

Colloff

Cameron

2009

Invert. Systematics

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The Gondwanan relict oribatid mite family Crotoniidae contains the genera Austronothrus Hammer, 1966, Crotonia Thorell, 1876 and Holonothrus Wallwork, 1963. This family is of considerable interest biogeographically and also because the members of the family may have re-evolved sexuality from thelytokous parthenogenetic ancestors. Crotonia and Holonothrus are speciose and widely distributed whereas Austronothrus is obscure, hitherto monospecific and known only from New Zealand. We revise Austronothrus and compare it with its better-known congeners. Two new species of Austronothrus are described from New Zealand, namely A. clarki, sp. nov., and A. flagellatus, sp. nov. The only previously known species, Austronothrus curviseta Hammer, 1966, is redescribed and the genus is redefined. The presence of male specimens of all species confirmed Austronothrus as a sexual genus, like its congeners. Secondary sexual characteristics within Austronothrus and Crotonia include significant differences in body size and proportion, as well as the lengths and shapes of various setae, predominantly those of the notogastral region. Because these characters are frequently used by taxonomists to separate and define species within the Crotoniidae, it is important that the sex of adult specimens be determined to avoid describing conspecific males and females as separate species. A phylogenetic analysis based on morphological characters shows the crotoniid genera nested within the Camisiidae, with Camisia von Heyden, 1826 basal to the crotoniid clade of Austronothrus, Holonothrus and Crotonia, and with a clade of Platynothrus Berlese, 1913, Heminothrus Berlese, 1913 and Paracamisia Olszanowski & Norton, 2002 (Camisiidae) forming the sister clade of Camisia + Crotoniidae. Thus, Camisiidae is paraphyletic with respect to Crotoniidae. The family Crotoniidae is revised in light of the cladistic analysis, and relegated to subfamily rank. Three subfamilies are defined within the Camisiidae : Crotoniinae (containing Crotonia, Austronothrus and Holonothrus), Camisiinae (containing Camisia) and Heminothridae, subfam. nov. (containing Heminothrus, Platynothrus and Neonothrus Forsslund, 1955). Nothrus maximus Trägårdh, 1901 belongs to the genus Platynothrus and is recombined.

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The systematic status and geographical distribution ofCamisia segnis(Acari : Oribatida)

Abstract: The systematic status of Camisia segnis, an arboricolous oribatid mite (Acari), and it world distribution are critically reviewed. A new subspecies, C. segnis segnoides, is described.

Cited by 8 publications

References 4 publications

The influence of air pollution on moss-dwelling animals: 1. Methodology and composition of flora and fauna

The influence of air pollution on moss-dwelling animals: 1. Methodology and composition of flora and fauna

Temporal and Spatial Distribution of Imidacloprid and the Arthropod Fauna Associated with Eastern Hemlock, Tsuga canadensis (L.) Carr

Revision of the oribatid mite genus Austronothrus Hammer (Acari:Oribatida):sexual dimorphism and a re-evaluation of the phylogenetic relationships of the family Crotoniidae

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