Tuesday 18 June
Chiriquita shadowdamsel (Palaemnema chiriquita)
Chiriquita shadowdamsel fact file
- Find out more
- Print factsheet
Chiriquita shadowdamsel description
This rare damselfly can be recognised by its dark brown to black overall colouring, and the contrasting colour of its thorax, which is shiny green-black at the front and greenish-yellow at the sides. Yellow-tan marks also appear at the start of each segment of the long slender abdomen, giving a distinctive banded appearance. In addition, males have extensive blue colouration on the top of abdominal segments eight and nine, appearing as a blue tip to the abdomen (2) (3).Top
Chiriquita shadowdamsel biology
Very little is known about the Chiriquita shadowdamsel’s reproductive biology, life history patterns or feeding behaviour. Nevertheless, there are general biological characteristics of dragonflies and damselflies (Odonata) that are likely to apply here. Odonata species start their life as aquatic larvae or nymphs, before passing through a series of developmental stages or ‘stadia’ during which they must undergo several moults as they grow (4). The larval period in Palaemnema probably lasts one year (2). Before the final moult (emergence), metamorphosis occurs in which the larvae transform into the adult form. After emergence, adults undergo a pre-reproductive phase known as the maturation period, and this is when individuals normally develop their full adult colour. Odonata usually feed on flying insects, but are generalised, opportunistic feeders, and will often congregate around abundant prey sources such as swarms of termites or near beehives (4).
There is often fierce competition between males for access to reproductive females. Although females typically begin to lay eggs in the water immediately after copulation, often guarded by their mate, they can store live sperm in their body for days (4). In shadowdamsels (Palaemnema), pairs often concentrate at suitable oviposition sites, and males may guard females after copulation to prevent other males from mating with them (2).Top
Chiriquita shadowdamsel rangeTop
Chiriquita shadowdamsel habitatTop
Chiriquita shadowdamsel status
Classified as Endangered (EN) on the IUCN Red List 2006 (1).Top
Chiriquita shadowdamsel threatsTop
Chiriquita shadowdamsel conservation
The Chiriquita shadowdamsel is found within the Parque Nacional Braulio Carrillo, where it receives some degree of protection. However, there is an urgent need for field surveys to search for other subpopulations and to determine the availability of suitable habitat (forested streams) in the general area (1).Top
Authenticated (05/07/2006) by Dr. Dennis Paulson, Director Emeritus, Slater Museum of Natural History.
- A species or taxonomic group that is only found in one particular country or geographic area.
- Stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
- An abrupt physical change from the larval to the adult form.
- Stage of insect development, similar in appearance to the adult but sexually immature and without wings. The adult form is reached via a series of moults and the wings develop externally as the nymph grows.
- Egg-laying in insects.
- Part of the body located near the head in animals. In insects, the three segments between the head and the abdomen, each of which has a pair of legs. In vertebrates the thorax contains the heart and the lungs.
- IUCN Red List (June, 2006)
- Paulson, D. (2006) Pers. comm.
- Calvert, P.P. (1931) The generic characters and the species of Palaemnema (Odonata: Agrionidae). Trans. Am. Ent. Soc, 57: 1 - 111.
- O’Toole, C. (2002) The New Encyclopedia of Insects and Their Allies. Oxford University Press, Oxford.
MyARKive offers the scrapbook feature to signed-up members, allowing you to organize your favourite ARKive images and videos and share them with friends.
Terms and Conditions of Use of Materials
Copyright in this website and materials contained on this website (Material) belongs to Wildscreen or its licensors.
Visitors to this website (End Users) are entitled to:
- view the contents of, and Material on, the website;
- download and retain copies of the Material on their personal systems in digital form in low resolution for their own personal use;
- teachers, lecturers and students may incorporate the Material in their educational material (including, but not limited to, their lesson plans, presentations, worksheets and projects) in hard copy and digital format for use within a registered educational establishment, provided that the integrity of the Material is maintained and that copyright ownership and authorship is appropriately acknowledged by the End User.
End Users shall not copy or otherwise extract, alter or manipulate Material other than as permitted in these Terms and Conditions of Use of Materials.
Additional use of flagged material
Green flagged material
Certain Material on this website (Licence 4 Material) displays a green flag next to the Material and is available for not-for-profit conservation or educational use. This material may be used by End Users, who are individuals or organisations that are in our opinion not-for-profit, for their not-for-profit conservation or not-for-profit educational purposes. Low resolution, watermarked images may be copied from this website by such End Users for such purposes. If you require high resolution or non-watermarked versions of the Material, please contact Wildscreen with details of your proposed use.
Creative commons material
Certain Material on this website has been licensed to Wildscreen under a Creative Commons Licence. These images are clearly marked with the Creative Commons buttons and may be used by End Users only in the way allowed by the specific Creative Commons Licence under which they have been submitted. Please see http://creativecommons.org for details.
Any other use
Please contact the copyright owners directly (copyright and contact details are shown for each media item) to negotiate terms and conditions for any use of Material other than those expressly permitted above. Please note that many of the contributors to ARKive are commercial operators and may request a fee for such use.
Save as permitted above, no person or organisation is permitted to incorporate any copyright material from this website into any other work or publication in any format (this includes but is not limited to: websites, Apps, CDs, DVDs, intranets, extranets, signage, digital communications or on printed materials for external or other distribution). Use of the Material for promotional, administrative or for-profit purposes is not permitted.