Limits...
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.


Galleries of conifer-feeding Scolytus, from Edson 1967.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4233402&req=5

Figure 24: Galleries of conifer-feeding Scolytus, from Edson 1967.

Mentions: The conifer clade (1.7–5.9 mm) (Scolytusaztecus, Scolytusdentatus, Scolytusfiskei, Scolytushermosus, Scolytuslaricis, Scolytusmonticolae, Scolytusmundus, Scolytusobelus, Scolytusoregoni, Scolytuspiceae, Scolytuspraeceps, Scolytusreflexus, Scolytusrobustus, Scolytussilvaticus, Scolytussubscaber, Scolytustsugae, Scolytusunispinosus, and Scolytusventralis) is monophyletic. The sexual dimorphism exhibited by species in the clade follows the general pattern outlined above except for the shape of the frons, which is quite variable. In some species, the frons is convex in both sexes with the female frons more strongly convex than that of the male (Scolytushermosus, Scolytusobelus, Scolytuspraeceps, and Scolytussubscaber). Scolytuslaricis males have a flattened and impressed frons when viewed from a lateral profile and that of the female is convex. In the remaining species, the male frons appears flattened when viewed from a lateral profile. Galleries of the conifer clade are in Figures 24 and 25.


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

Smith SM, Cognato AI - Zookeys (2014)

Galleries of conifer-feeding Scolytus, from Edson 1967.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

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

Figure 24: Galleries of conifer-feeding Scolytus, from Edson 1967.
Mentions: The conifer clade (1.7–5.9 mm) (Scolytusaztecus, Scolytusdentatus, Scolytusfiskei, Scolytushermosus, Scolytuslaricis, Scolytusmonticolae, Scolytusmundus, Scolytusobelus, Scolytusoregoni, Scolytuspiceae, Scolytuspraeceps, Scolytusreflexus, Scolytusrobustus, Scolytussilvaticus, Scolytussubscaber, Scolytustsugae, Scolytusunispinosus, and Scolytusventralis) is monophyletic. The sexual dimorphism exhibited by species in the clade follows the general pattern outlined above except for the shape of the frons, which is quite variable. In some species, the frons is convex in both sexes with the female frons more strongly convex than that of the male (Scolytushermosus, Scolytusobelus, Scolytuspraeceps, and Scolytussubscaber). Scolytuslaricis males have a flattened and impressed frons when viewed from a lateral profile and that of the female is convex. In the remaining species, the male frons appears flattened when viewed from a lateral profile. Galleries of the conifer clade are in Figures 24 and 25.

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.