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A key to the adult Costa Rican "helicopter" damselflies (Odonata Pseudostigmatidae) with notes on their phenology and life zone preferences
Department of Applied Science, Mid Sweden University, Härnösand, Sweden & Escuela de Biología, Universidad de Costa Rica, San José, Costa Rica & Department of Ecumenical Research, Sabanilla, Costa Rica.
Halmstad University, School of Business, Engineering and Science, The Rydberg Laboratory for Applied Sciences (RLAS). Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden.ORCID iD: 0000-0002-7840-6460
2001 (English)In: Revista de biologia tropical, ISSN 0034-7744, E-ISSN 2215-2075, Vol. 49, no 3-4, p. 1037-1056Article in journal (Refereed) Published
Abstract [en]

We present a key to the Costa Rican species of Pseudostigmatidae, comprising three genera with the following species: Megaloprepus caerulatus, Mecistogaster linearis, M. modesta, M. ornata and Pseudostigma aberrans. Pseudostigma accedens, which may occur in the region, is also included. For each species we give a brief account of morphology, phenology and life zone preferences, including distributional maps based on more than 270 records. These are not all of the known specimens from the area, but a high enough number to give a relatively good picture of the distribution and status of the species. We found M. caerulatus to be active during the first half of the year in seasonal, tropical semi-dry lowland forest and tropical moist forest at mid-elevation, but like M. linearis, M. caerulatus was active all year round in non-seasonal, tropical wet lowland forest and tropical moist forest at mid-elevation. Mecistogaster modesta also flew year round in non-seasonal, tropical wet lowland forest and tropical moist evergreen forest at mid-elevation, and likewise in seasonal and non-seasonal, tropical premontane moist forest. Only a few findings, however, have been made of M. modesta in seasonal, tropical semi-dry deciduous forest and seasonal, tropical moist evergreen forest. Mecistogaster ornata was missing entirely from non-seasonal, tropical wet lowland forest and non-seasonal, tropical moist forest at mid-elevation, while this species was active year round in seasonal, tropical dry lowland forest and tropical semi-dry forest, as well as in seasonal, tropical moist evergreen forest and tropical premontane moist forest, both at mid-elevation. Pseudostigma aberrans has so far been found too few times in Costa Rica for any indication of flight time preference.

Place, publisher, year, edition, pages
San José: Editorial de la Universidad de Costa Rica, 2001. Vol. 49, no 3-4, p. 1037-1056
Keywords [en]
animal, article, classification, Costa Rica, female, histology, insect, male, physiology, season, weather, Animals, Costa Rica, Female, Insects, Male, Seasons, Weather
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Zoology
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URN: urn:nbn:se:hh:diva-39357ISI: 000176106300024PubMedID: 12189786Scopus ID: 2-s2.0-0035453267OAI: oai:DiVA.org:hh-39357DiVA, id: diva2:1315661
Available from: 2019-05-14 Created: 2019-05-14 Last updated: 2019-05-14Bibliographically approved

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Sahlén, Göran

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