Pharaxonotha portophylla (Coleoptera

Erotylidae), new species and pollinator of Zamia (Zamiaceae) in Puerto Rico

Nico Franz, Paul E. Skelley

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Pharaxonotha portophylla, new species (Insecta: Coleoptera: Erotylidae: Pharaxonothinae), is described based on individuals collected on the cones of native populations of Zamia amblyphyllidia D. W. Stevenson and Z. portoricensis Urban (Cycadales: Zamiaceae) in the Puerto Rican Cambalache and Susúa Commonwealth Forests, respectively. The new species is a member of a complex centered around P. floridana (Casey), and may be distinguished from other Pharaxonotha species by the following traits: head lacking supraocular striae, with coarse punctation; pronotum slightly transverse, anterolateral edges weakly projected and angulate; protibia narrowly triangularly widened toward apex; elytra with an anterior marginal line, elytral punctures coarse, not impressed, elytral striae not grooved, and elytral intervals plane. Pharaxonotha portophylla is the second species in this genus reported for the Caribbean region, raising the number of known Pharaxonotha species to 13 worldwide. Samples of insect visitors on Zamia cones of either gender and at various stages of anthesis strongly suggest that P. portophylla is the primary and sole pollinator of these cycad species at the two locations. The abundance of adult individuals was much lower on the receptive megastrobili than on the pollen-releasing microstrobili which produced similar attracting odors. Larval development was restricted to the microstrobili, possibly indicating the presence of defensive metabolites in the megastrobili and a reproductive interaction with "pollination by deceit".

Original languageEnglish (US)
Pages (from-to)321-333
Number of pages13
JournalCaribbean Journal of Science
Volume44
Issue number3
StatePublished - 2008
Externally publishedYes

Fingerprint

Strobilanthes
Erotylidae
Zamia
Zamiaceae
seed cones
Puerto Rico
pollinating insects
Cycadales
Coleoptera
Cycadopsida
new species
Insecta
larval development
pollination
odors
pollen
metabolites
flowering
insects
gender

Keywords

  • Cycad pollination
  • Insect systematics
  • Pharaxonothinae
  • Pollinator reproduction

ASJC Scopus subject areas

  • General

Cite this

Pharaxonotha portophylla (Coleoptera : Erotylidae), new species and pollinator of Zamia (Zamiaceae) in Puerto Rico. / Franz, Nico; Skelley, Paul E.

In: Caribbean Journal of Science, Vol. 44, No. 3, 2008, p. 321-333.

Research output: Contribution to journalArticle

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