Description and Phylogeny of Staminodeus, a New Genus of Derelomini (Coleoptera: Curculionidae) Associated with Cyclanthaceae

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Abstract

Staminodeus, new genus, is described for seven species: S. inermis, new species, from Panama; S. curvitibialis, new species, from Colombia and Venezuela; S. denticulatus, new species, from Costa Rica and Panama; S. bispinosus, new species, from Panama; S. forcipis, new species, from Costa Rica; S. dilatatus, new species, from Panama; and S. vectoris, new species, from Costa Rica and Panama. Staminodeus is placed in Derelomini, and is characterized by the putative synapomorphies: carinate rostrum, male with prothoracic leg ventrally denticulate (excepting S. inermis) as well as median lobe internally with complex structures, and female with frontal spine. All species are hypothesized to be associated with the staminodes of the inflorescences of Cyclanthaceae. Field observations on the reproductive behavior of S. vectoris at La Selva, Costa Rica, indicate that the protibia in males is used to displace competitors, whereas the spine in females was used as a point of support while transporting the detached staminodes to oviposition sites on the forest floor. A cladistic analysis with Notolomus basalis LeConte, Perelleschus carludovicae (Günther), and Systenotelus costaricensis Anderson & Gómez as outgroup taxa hypothesizes the phylogenetic relationships (S. inermis, ((S. curvitibialis, S. denticulatus), ((S. bispinosus, S. forcipis), (S. dilatatus, S. vectoris)))).

Original languageEnglish (US)
Pages (from-to)411-432
Number of pages22
JournalColeopterists Bulletin
Volume55
Issue number4
StatePublished - Dec 2001
Externally publishedYes

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Cyclanthaceae
Curculionidae
new genus
Panama
Coleoptera
new species
phylogeny
Costa Rica
oviposition sites
reproductive behavior
forest litter
Venezuela
Colombia
legs
inflorescences

ASJC Scopus subject areas

  • Insect Science

Cite this

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title = "Description and Phylogeny of Staminodeus, a New Genus of Derelomini (Coleoptera: Curculionidae) Associated with Cyclanthaceae",
abstract = "Staminodeus, new genus, is described for seven species: S. inermis, new species, from Panama; S. curvitibialis, new species, from Colombia and Venezuela; S. denticulatus, new species, from Costa Rica and Panama; S. bispinosus, new species, from Panama; S. forcipis, new species, from Costa Rica; S. dilatatus, new species, from Panama; and S. vectoris, new species, from Costa Rica and Panama. Staminodeus is placed in Derelomini, and is characterized by the putative synapomorphies: carinate rostrum, male with prothoracic leg ventrally denticulate (excepting S. inermis) as well as median lobe internally with complex structures, and female with frontal spine. All species are hypothesized to be associated with the staminodes of the inflorescences of Cyclanthaceae. Field observations on the reproductive behavior of S. vectoris at La Selva, Costa Rica, indicate that the protibia in males is used to displace competitors, whereas the spine in females was used as a point of support while transporting the detached staminodes to oviposition sites on the forest floor. A cladistic analysis with Notolomus basalis LeConte, Perelleschus carludovicae (G{\"u}nther), and Systenotelus costaricensis Anderson & G{\'o}mez as outgroup taxa hypothesizes the phylogenetic relationships (S. inermis, ((S. curvitibialis, S. denticulatus), ((S. bispinosus, S. forcipis), (S. dilatatus, S. vectoris)))).",
author = "Nico Franz",
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T1 - Description and Phylogeny of Staminodeus, a New Genus of Derelomini (Coleoptera

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N2 - Staminodeus, new genus, is described for seven species: S. inermis, new species, from Panama; S. curvitibialis, new species, from Colombia and Venezuela; S. denticulatus, new species, from Costa Rica and Panama; S. bispinosus, new species, from Panama; S. forcipis, new species, from Costa Rica; S. dilatatus, new species, from Panama; and S. vectoris, new species, from Costa Rica and Panama. Staminodeus is placed in Derelomini, and is characterized by the putative synapomorphies: carinate rostrum, male with prothoracic leg ventrally denticulate (excepting S. inermis) as well as median lobe internally with complex structures, and female with frontal spine. All species are hypothesized to be associated with the staminodes of the inflorescences of Cyclanthaceae. Field observations on the reproductive behavior of S. vectoris at La Selva, Costa Rica, indicate that the protibia in males is used to displace competitors, whereas the spine in females was used as a point of support while transporting the detached staminodes to oviposition sites on the forest floor. A cladistic analysis with Notolomus basalis LeConte, Perelleschus carludovicae (Günther), and Systenotelus costaricensis Anderson & Gómez as outgroup taxa hypothesizes the phylogenetic relationships (S. inermis, ((S. curvitibialis, S. denticulatus), ((S. bispinosus, S. forcipis), (S. dilatatus, S. vectoris)))).

AB - Staminodeus, new genus, is described for seven species: S. inermis, new species, from Panama; S. curvitibialis, new species, from Colombia and Venezuela; S. denticulatus, new species, from Costa Rica and Panama; S. bispinosus, new species, from Panama; S. forcipis, new species, from Costa Rica; S. dilatatus, new species, from Panama; and S. vectoris, new species, from Costa Rica and Panama. Staminodeus is placed in Derelomini, and is characterized by the putative synapomorphies: carinate rostrum, male with prothoracic leg ventrally denticulate (excepting S. inermis) as well as median lobe internally with complex structures, and female with frontal spine. All species are hypothesized to be associated with the staminodes of the inflorescences of Cyclanthaceae. Field observations on the reproductive behavior of S. vectoris at La Selva, Costa Rica, indicate that the protibia in males is used to displace competitors, whereas the spine in females was used as a point of support while transporting the detached staminodes to oviposition sites on the forest floor. A cladistic analysis with Notolomus basalis LeConte, Perelleschus carludovicae (Günther), and Systenotelus costaricensis Anderson & Gómez as outgroup taxa hypothesizes the phylogenetic relationships (S. inermis, ((S. curvitibialis, S. denticulatus), ((S. bispinosus, S. forcipis), (S. dilatatus, S. vectoris)))).

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