A new genus and twenty new species of Australian jumping plant-lice (Psylloidea: Triozidae) from Eremophila and Myoporum (Scrophulariaceae: Myoporeae)

Taylor, Gary S.; Fagan‐Jeffries, Erinn P.; Austin, A. D.

doi:10.11646/zootaxa.4073.1.1

Cited by 27 publications

(30 citation statements)

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“…Despite distinct regional structure in the genetic variation of Trioza urticae , overall genetic divergence, particularly considering the extremely large geographic range, is relatively small (<3%) and is well within intraspecific divergence reported for other psyllid taxa [Percy 2003, Taylor et al 2016]. We therefore consider the observed variation in Trioza urticae to be typical and not suggestive of reproductive isolation indicative of incipient species divergence.…”

Section: Discussionsupporting

confidence: 48%

“…One study, using the small tortoiseshell butterfly ( Aglais urticae L.), found high levels of gene flow and little or no population or geographic structure across the Palaearctic [Vandewoestijne et al 2004], which the authors attributed to rapid population expansion facilitated by the ubiquitous and widespread distribution of the host. The relatively typical overall genetic divergence in Trioza urticae compared to other psyllid systems [Percy 2003, Taylor et al 2016] suggests that range expansions are also facilitated by the abundant frequency and breadth of host distribution, but these are apparently more limited and less rapid than in the small tortoiseshell butterfly. Although the host plants were also sampled during collection of the nettle psyllids for this study, the observed morphological and cytological diversity in the nettle samples is complex [Cronk et al 2016] and there are no obvious or clear associative patterns with the structure of variation in the nettle psyllid.…”

Section: Discussionmentioning

confidence: 99%

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Salix transect of Europe: structured genetic variation and isolation-by-distance in the nettle psyllid, Trioza urticae (Psylloidea, Hemiptera), from Greece to Arctic Norway

Wonglersak¹,

Cronk²,

Percy³

2017

BDJ

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BackgroundThe common nettle (Urtica dioica L.) is co-associated with willows (Salix spp.) in riparian habitats across Europe. We sampled the widespread nettle psyllid, Trioza urticae (Linné, 1758), from Urtica in willow habitats on a megatransect of Europe from the Aegean to the Arctic Ocean. The aim of this study was to use an unusually widespread insect to assess the influence of geographic distances and natural geographic barriers on patterns of genetic variation and haplotype distribution.New informationPhylogeographic analysis using DNA sequences of two mtDNA regions, COI and cytB, shows that T. urticae specimens are organized into four regional groups (southern, central, northern and arctic). These groups are supported by both phylogenetic analysis (four geographically-based clades) and network analysis (four major haplotype groups). The boundary between southern and central groups corresponds to the Carpathian Mountains and the boundary between the central and northern groups corresponds to the Gulf of Finland. Overall these groups form a latitudinal cline in genetic diversity, which decreases with increasing latitude.

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Section: Discussionsupporting

confidence: 48%

Section: Discussionmentioning

confidence: 99%

Salix transect of Europe: structured genetic variation and isolation-by-distance in the nettle psyllid, Trioza urticae (Psylloidea, Hemiptera), from Greece to Arctic Norway

Wonglersak¹,

Cronk²,

Percy³

2017

BDJ

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“…Percy (2003) found that intra-specific mitochondrial divergence varied between 1 and 10% for psyllid species collected on different islands, but was restricted to an upper limit of 3% for continental species. Taylor et al (2016) identified a 5-6% divergence as the threshold that best matched morphological and ecological The lower level corresponds to the tree species the insects were collected from. The second level corresponds to the Mycopsylla spp.…”

Section: Discussionmentioning

confidence: 99%

Diversity and specificity of sap‐feeding herbivores and their parasitoids on Australian fig trees

Fromont

DeGabriel

Riegler

et al. 2016

Insect Conserv Diversity

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The ecology, diversity, and parasitoid complex of plant–sap feeding insects of the family Homotomidae (Hemiptera: Psylloidea) specialised on fig trees (Ficus) have so far received little research attention. They are ecologically important, however, as occasional outbreaks of the homotomid Mycopsylla fici may cause complete defoliation of its host plant, the Moreton Bay fig (Ficus macrophylla). Mycopsylla proxima, the only other species reported from Australia, feeds on F. rubiginosa without any recorded outbreaks. We searched for homotomids and their parasitoids on eight Ficus species on the east coast of Australia, Lord Howe Island (LHI), and in Auckland, New Zealand, and detected them on three Ficus species. Using mitochondrial and nuclear DNA sequences, we delimited three Mycopsylla species, including a putative new species on F. watkinsiana. We also characterised six (including one previously described) parasitoid species of the genus Psyllaephagus (Hymenoptera: Encyrtidae) based on congruent morphological characters and molecular data. Each of the homotomid species was highly host specific to a single fig species, whereas parasitoid species varied in host specificity: three host specific to M. fici and three host generalists. Geographic distribution varied among parasitoid species; e.g. one host‐specific species was found on both the mainland and LHI, but a second species only on LHI. Our study revealed previously unrecognised diversity in fig homotomids and especially in their parasitoids. The herbivores and parasitoids showed contrasting patterns of host specificity. Interestingly, M. fici, the only outbreak species, had the highest diversity of associated parasitoid species and was the only species with host‐specific parasitoids.

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“…Of the Psylloidea, the family Triozidae feed on by far the greatest number of plant families (see Hollis, 1984;Ouvrard et al, 2015;Ouvrard, 2019), although certain composite lineages within often show radiations on discrete plant genera and plant families, e.g., Casuarinicola on Casuarina (Taylor et al, 2010), Acanthocasuarina on Allocasuarina (Casuarinaceae) (Taylor et al, 2011), Myotrioza on Eremophila and Myoporum (Scrophulariaceae) (Taylor et al, 2016) and Pariaconus on Metrosideros (Myrtaceae) (Percy, 2017). Based on the land mass, the Australian triozid fauna is considered depauperate, with 59 described species in seven genera from nine plant families of which the genus Trioza comprises just 10 species (Taylor et al, 2016). Contrastingly, the New Zealand triozid fauna comprises 60 species in five putative genera (i.e., two undescribed) from at least 15 plant families of which the genus Trioza comprises 56 putative species (of these 23 taxa are undescribed) (Martoni et al, 2016(Martoni et al, , 2018).…”

Section: Introductionmentioning

confidence: 99%

Case of mistaken identity: resolving the taxonomy between Trioza eugeniae Froggatt and T. adventicia Tuthill (Psylloidea: Triozidae)

Taylor

Martoni

2019

Bull. Entomol. Res.

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The ‘Eugenia psyllid’ or ‘Lilly pilly psyllid’, widely recognized in Australia and in the USA as Trioza eugeniae Froggatt (Hemiptera: Triozidae), is not T. eugeniae, but rather T. adventicia Tuthill. In this study we assessed morphological comparisons of materials from throughout the native and introduced ranges and re-examined original descriptions of both taxa, together with Froggatt's type specimens of T. eugeniae. Furthermore, through DNA barcoding analyses, we confirmed the validity of both T. adventicia and T. eugeniae as separate species. We re-described both species to include additional characters not previously included and designated a lectotype for T. eugeniae. T. eugeniae has smaller fore wings that are slightly more elongate. These lack infuscation around veins R and R1, vein Rs is relatively longer, meeting the costa closer to the wing apex; with certain veins bearing long, fine divergent setae, a character not previously described. It has consistently three inner and one outer metatibial spurs. The male parameres appear narrowly pyriform with a weak dorsolateral lobe and weakly sclerotized apices. T. adventicia has larger fore wings that are slightly more ovate with dark infuscation around veins R and R1; vein Rs is relatively shorter, meeting the costa further from the wing apex, with veins lacking long, fine divergent setae. The usual configuration of two inner and one outer metatibial spurs, previously used to separate the two species, appears inconsistent. The male parameres appear a little more broadly pyriform with slightly more sclerotized apices. T. eugeniae refers to a distinct species which has a restricted distribution only in its native range in southern subcoastal New South Wales, Australia. T. adventicia refers to a separate species, with a natural distribution in eastern subcoastal Australia, but has been introduced widely in southern Australia, to New Zealand and the USA. This study elucidates a long history of misidentification of T. eugeniae in the nursery industry and in almost 30 years of literature on its biological control in the USA. Regardless, the biological control program, unknowingly, targeted the correct species of psyllid, T. adventicia, in its foreign exploration and importation of the appropriate parasitoid as a biocontrol agent in the USA. Despite being firmly entrenched in both the nursery trade and scientific literature, the name T. eugeniae is misapplied. While the acceptance of the valid name, T. adventicia, might be regarded as both problematic and protracted, this is the correct taxonomical attribution.

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A new genus and twenty new species of Australian jumping plant-lice (Psylloidea: Triozidae) from Eremophila and Myoporum (Scrophulariaceae: Myoporeae)

Cited by 27 publications

References 0 publications

Salix transect of Europe: structured genetic variation and isolation-by-distance in the nettle psyllid, Trioza urticae (Psylloidea, Hemiptera), from Greece to Arctic Norway

Salix transect of Europe: structured genetic variation and isolation-by-distance in the nettle psyllid, Trioza urticae (Psylloidea, Hemiptera), from Greece to Arctic Norway

Diversity and specificity of sap‐feeding herbivores and their parasitoids on Australian fig trees

Case of mistaken identity: resolving the taxonomy between Trioza eugeniae Froggatt and T. adventicia Tuthill (Psylloidea: Triozidae)

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