http://www.collembola.org/publicat/catenazz.htm - Last updated on 2004.11.19 by Frans Janssens
Checklist of the Collembola: A new species of the genus Paraxenylla (Collembola: Hypogastruridae) from Paracas Bay, Peru., in print.

José G. Palacios-Vargas, Laboratorio de Ecologia y Sistemática de Microartrópodos, Departamento de Biologia, Facultad de Ciensas, Universidad Nacional Autónoma de México, México D.F.
Frans Janssens, Department of Biology, University of Antwerp (RUCA), Antwerp, B-2020, Belgium

Abstract

Coming soon...

Keywords: Collembola, Hypogastruridae, Paraxenylla, Peru

Under construction. Contineously being revised.

Introduction

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Materials and Methods

Specimens have been collected using ... In the laboratory, the contents was treated with ..., and the collected specimens were preserved in ethanol 70%???.

The specimens were previewed using a stereomicroscope (magnification max. 50x). Given following characters: unguiculus absent, anal spines absent, and eyes 5 + 5, the specimens appeared to be close to Xenylla. The sharply pointed mucrodens indicated Paraxenylla. A broad lamella on the mucro suggested an aquatic habitat.

All specimens were mounted in a drop of Hoyer medium on standard object slides, and covered with a square cover glass of 18x18 mm. After drying for a week at room temperature, the cover glasses were 'ringed' with transparant nail polish to seal the Hoyer medium.

Final determination was done using a binocular phase-contrast compound microscope at 10x100 magnification with immersion oil.

The genus level identification is based on Bellinger & al. (1999-2004). The species level identification is based on ... The nomenclature is based on Bellinger, Christiansen & Janssens (1996-2004).

Paraxenylla speciesnovumperuensis Palacios-Vargas & Janssens new species

Type material. Collembolans were collected by Dr Alessandro Catenazzi from the Paracas Bay, Paracas National Reserve, Department Ica, Peru, coordinates 13°50'50" S and 76°17'07" W on May 9, 2003. The specimens were collected from washed ashore green algae (Ulva sp.) on a shelly beach.
The holotype has been deposited in the LESM collection of the Universidad Nacional Autónoma de México, México, and the paratypes in the RUCA collection of the University of Antwerp, Belgium. Other material in the private collection of Dr Catennazi.

Legend of the columns
 1Provence
 2Station (for more details see above)
 3UTM (10 x 10 km)
 4Date (year - month - day)
 5Number of specimens (adult, exemplaires, female, juvenile, male)
 6Name of legit
 7Name of determinator
 8Collection(s) where the specimens are deposited

Inventory

Familia Hypogastruridae Börner, 1906

Paraxenylla speciesnovumperuensis

   Ica  on washed ashore Ulva ?    2003-04-09 ?e        Catenazzi A            Palacios-Vargas & al.  Catenazzi A @FIU
   Ica  on washed ashore Ulva ?    2003-04-09 5a        Catenazzi A            Palacios-Vargas & al.  Janssens F @RUCA
   Ica  on washed ashore Ulva ?    2003-04-09 5a        Catenazzi A            Palacios-Vargas & al.  Janssens F @RUCA
   Ica  on washed ashore Ulva ?    2003-04-09 6a        Catenazzi A            Palacios-Vargas & al.  Janssens F @RUCA
   Ica  on washed ashore Ulva ?    2003-04-09 4a        Catenazzi A            Palacios-Vargas & al.  Janssens F @RUCA
   Ica  on washed ashore Ulva ?    2003-04-09 2a        Catenazzi A            Palacios-Vargas & al.  Janssens F @RUCA
   Ica  on washed ashore Ulva ?    2003-04-09 1a4j      Catenazzi A            Palacios-Vargas & al.  Janssens F @RUCA
   Ica  on washed ashore Ulva ?    2003-04-09 3a        Catenazzi A            Palacios-Vargas & al.  Janssens F @RUCA
   Ica  on washed ashore Ulva ?    2003-04-09 5e        Catenazzi A            Palacios-Vargas & al.  Palacios-Vargas GJ @UNAM

Description. Coming soon...

Derivatio nominis. Coming soon...

Biology. Coming soon...

Discussion

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Key to the species of Paraxenylla

Acknowledgements

We would like to thank Dr Alessandro Catenazzi, Department of Biological Sciences, Florida International University, Miami, USA, for sending the specimens for identification.

References