Translator Disclaimer
20 June 2012 Descriptions of the Third Instars of Pristerophora picipennis (Solier) and Schizochelus modestus Philippi (Coleoptera: Scarabaeidae: Melolonthinae: Macrodactylini) from Southern Chile
A. Ernesto Cisternas, Ll. Roberto Carrillo
Author Affiliations +
Abstract

The third instars of Pristerophora picipennis (Solier) and Schizochelus modestus Philippi (Scarabaeidae: Melolonthinae: Macrodactylini) are described and illustrated. The descriptions are based on larvae reared from eggs laid by adults in the laboratory and on larvae collected in the field. These are the first descriptions of larvae of Macrodactylini that live and feed in the root zone of pastures in southern Chile. The larvae of the two species can be distinguished easily by the presence (S. modestus) or absence (P. picipennis) of palidia. Also, setae on the dorsum and the dorsal anal lobe are sickle-shaped in S. modestus and short, slender, straight, and acute in P. picipennis.

Se describen e ilustran las características del tercer estadio de Pristerophora picipennis (Solier) and Schizochelus modestus Philippi (Scarabaeidae: Melolonthinae: Macrodactylini). Las descripciones se basan en larvas criadas desde huevos puestos por adultos en el laboratorio y en larvas colectadas del suelo bajo praderas. Estas son las primeras descripciones de larvas de Macrodactylini que viven y se alimentan de la zona radicular en las praderas del sur de Chile. Las larvas de ambas especies pueden ser fácilmente separadas por la presencia (S. modestus) o ausencia (P. picipennis) de palidia. También, en S. modestus las setas del dorso y lóbulo anal dorsal presentan forma de hoz y en P. picipennis son cortas, delgadas, rectas y agudas.

A. Ernesto Cisternas and Ll. Roberto Carrillo "Descriptions of the Third Instars of Pristerophora picipennis (Solier) and Schizochelus modestus Philippi (Coleoptera: Scarabaeidae: Melolonthinae: Macrodactylini) from Southern Chile," The Coleopterists Bulletin 66(2), 131-138, (20 June 2012). https://doi.org/10.1649/072.066.0208
Received: 11 May 2010; Accepted: 21 March 2012; Published: 20 June 2012
JOURNAL ARTICLE
8 PAGES


Share
SHARE
KEYWORDS
morphology
pasture ecosystem
scarab beetles
white grubs
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top