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PLoS One

Title:		"Type and distribution of sensilla in the antennae of Euplatypus parallelus (F.) (Coleoptera: Curculionidea, Platypodinae)"
Author(s):		Lei G; Fu Y; Wu WJ;
Address:		"Laboratory of Insect Ecology, South China Agricultural University, Guangzhou, China. Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou, China"
Journal Title:		PLoS One
Year:		2020
Volume:		20201027
Issue:		10
Page Number:		e0241275 -
DOI:		10.1371/journal.pone.0241275
ISSN/ISBN:		1932-6203 (Electronic) 1932-6203 (Linking)
Abstract:		"Euplatypus parallelus (F.) (Coleoptera: Curculionidea) is the most destructive cosmopolitan insect pest of the Platypodinae. Pheromone-based luring agents are used currently in controlling bark beetle. Antennae are the primary insect organs sensing volatiles of host trees and pheromones of pioneer males. We studied the external morphology of antennae and the type, distribution, and the number of the beetle sensilla. Our results show E. parallelus have a geniculate antenna composed of 6 segments, namely the scape, 4-segmented funicle and club. Ninety-seven percent of the antennal sensors were distributed in the club, and 3% were distributed in the scape and funicle. 6 types of sensilla on the antennae were found, including sensilla trichodea (subtypes: STI, STII and STIII), sensilla basiconica (subtypes: SBI, SBII, SBIII and SBIV), sensilla chaetica (subtypes: SChI, SChII and SChIII), as well as sensilla coeloconica, sensilla campaniform and sensilla furcatea. There was no significant difference in the type, distribution and number of sensilla in males and females. No significant difference in the shape and distribution of antennae was found between sexes, but the length of antennae and the number of SChI, SChII, STI, SBI, SBIII and SBIV were significantly larger in females than males. We revealed the external cuticular structure of the antennae in E. parallelus, which can be used to guide future electrophysiological investigations to understand the ability of this beetle to detect semiochemicals"
Keywords:		Animals Arthropod Antennae/*anatomy & histology/ultrastructure Coleoptera/*anatomy & histology/ultrastructure Female Integumentary System/anatomy & histology Male Sensilla/*anatomy & histology/ultrastructure;
Notes:		"MedlineLei, Gaoke Fu, Yueguan Wu, Wei-Jian eng Research Support, Non-U.S. Gov't 2020/10/28 PLoS One. 2020 Oct 27; 15(10):e0241275. doi: 10.1371/journal.pone.0241275. eCollection 2020"