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A taxonomic monograph of Nearctic Scolytus Geoffroy (Coleoptera, Curculionidae, Scolytinae).

Smith SM, Cognato AI - Zookeys (2014)

Bottom Line: Parsimony analyses of molecular and combined datasets provided mixed results while Bayesian analysis recovered most nodes with posterior probabilities >90%.Two species were reinstated: Scolytusfiskei Blackman, 1934 and Scolytussilvaticus Bright, 1972.A diagnosis, description, distribution, host records and images were provided for each species and a key is presented to all species.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Entomology, Michigan State University, Natural Science Building, room 243, 288 Farm Lane, East Lansing, MI 48824, United States of America.

ABSTRACT
The Nearctic bark beetle genus Scolytus Geoffroy was revised based in part on a molecular and morphological phylogeny. Monophyly of the native species was tested using mitochondrial (COI) and nuclear (28S, CAD, ArgK) genes and 43 morphological characters in parsimony and Bayesian phylogenetic analyses. Parsimony analyses of molecular and combined datasets provided mixed results while Bayesian analysis recovered most nodes with posterior probabilities >90%. Native hardwood- and conifer-feeding Scolytus species were recovered as paraphyletic. Native Nearctic species were recovered as paraphyletic with hardwood-feeding species sister to Palearctic hardwood-feeding species rather than to native conifer-feeding species. The Nearctic conifer-feeding species were monophyletic. Twenty-five species were recognized. Four new synonyms were discovered: Scolytuspraeceps LeConte, 1868 (= Scolytusabietis Blackman, 1934; = Scolytusopacus Blackman, 1934), Scolytusreflexus Blackman, 1934 (= Scolytusvirgatus Bright, 1972; = Scolytuswickhami Blackman, 1934). Two species were reinstated: Scolytusfiskei Blackman, 1934 and Scolytussilvaticus Bright, 1972. A diagnosis, description, distribution, host records and images were provided for each species and a key is presented to all species.

No MeSH data available.


Morphological phylogeny of Nearctic Scolytus. Phylogram of one of 1016 most parsimonious trees (L = 262, CI = 0.332, RI = 0.539) generated for 37 taxa with 43 characters from a heuristic search of 1000 stepwise random additions with TBR in PAUP*. Numbers above the node indicate bootstrap values (>50). Bremer support values are listed below the node. The Nearctic hardwood and conifer clades are indicated in blue and green respectively. Non-monophyletic species are indicated in purple. * denotes species exotic to the Nearctic.
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Figure 2: Morphological phylogeny of Nearctic Scolytus. Phylogram of one of 1016 most parsimonious trees (L = 262, CI = 0.332, RI = 0.539) generated for 37 taxa with 43 characters from a heuristic search of 1000 stepwise random additions with TBR in PAUP*. Numbers above the node indicate bootstrap values (>50). Bremer support values are listed below the node. The Nearctic hardwood and conifer clades are indicated in blue and green respectively. Non-monophyletic species are indicated in purple. * denotes species exotic to the Nearctic.

Mentions: Forty-three characters were used in this study (19 binary and 24 multistate). Ten morphological characters were coded from the head, two from the thorax, ten from the elytra, one from the metepimeron, and 17 from the venter. Three ecological characters were also coded. Consistency and retention index values from the morphological phylogeny (Fig. 2) and generated from MacClade are listed next to each character. Characters and states were scored as follows:


A taxonomic monograph of Nearctic Scolytus Geoffroy (Coleoptera, Curculionidae, Scolytinae).

Smith SM, Cognato AI - Zookeys (2014)

Morphological phylogeny of Nearctic Scolytus. Phylogram of one of 1016 most parsimonious trees (L = 262, CI = 0.332, RI = 0.539) generated for 37 taxa with 43 characters from a heuristic search of 1000 stepwise random additions with TBR in PAUP*. Numbers above the node indicate bootstrap values (>50). Bremer support values are listed below the node. The Nearctic hardwood and conifer clades are indicated in blue and green respectively. Non-monophyletic species are indicated in purple. * denotes species exotic to the Nearctic.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4233402&req=5

Figure 2: Morphological phylogeny of Nearctic Scolytus. Phylogram of one of 1016 most parsimonious trees (L = 262, CI = 0.332, RI = 0.539) generated for 37 taxa with 43 characters from a heuristic search of 1000 stepwise random additions with TBR in PAUP*. Numbers above the node indicate bootstrap values (>50). Bremer support values are listed below the node. The Nearctic hardwood and conifer clades are indicated in blue and green respectively. Non-monophyletic species are indicated in purple. * denotes species exotic to the Nearctic.
Mentions: Forty-three characters were used in this study (19 binary and 24 multistate). Ten morphological characters were coded from the head, two from the thorax, ten from the elytra, one from the metepimeron, and 17 from the venter. Three ecological characters were also coded. Consistency and retention index values from the morphological phylogeny (Fig. 2) and generated from MacClade are listed next to each character. Characters and states were scored as follows:

Bottom Line: Parsimony analyses of molecular and combined datasets provided mixed results while Bayesian analysis recovered most nodes with posterior probabilities >90%.Two species were reinstated: Scolytusfiskei Blackman, 1934 and Scolytussilvaticus Bright, 1972.A diagnosis, description, distribution, host records and images were provided for each species and a key is presented to all species.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Entomology, Michigan State University, Natural Science Building, room 243, 288 Farm Lane, East Lansing, MI 48824, United States of America.

ABSTRACT
The Nearctic bark beetle genus Scolytus Geoffroy was revised based in part on a molecular and morphological phylogeny. Monophyly of the native species was tested using mitochondrial (COI) and nuclear (28S, CAD, ArgK) genes and 43 morphological characters in parsimony and Bayesian phylogenetic analyses. Parsimony analyses of molecular and combined datasets provided mixed results while Bayesian analysis recovered most nodes with posterior probabilities >90%. Native hardwood- and conifer-feeding Scolytus species were recovered as paraphyletic. Native Nearctic species were recovered as paraphyletic with hardwood-feeding species sister to Palearctic hardwood-feeding species rather than to native conifer-feeding species. The Nearctic conifer-feeding species were monophyletic. Twenty-five species were recognized. Four new synonyms were discovered: Scolytuspraeceps LeConte, 1868 (= Scolytusabietis Blackman, 1934; = Scolytusopacus Blackman, 1934), Scolytusreflexus Blackman, 1934 (= Scolytusvirgatus Bright, 1972; = Scolytuswickhami Blackman, 1934). Two species were reinstated: Scolytusfiskei Blackman, 1934 and Scolytussilvaticus Bright, 1972. A diagnosis, description, distribution, host records and images were provided for each species and a key is presented to all species.

No MeSH data available.