scholarly journals Documentation and validation of chemosensory structures in antennae of Spodoptera litura (Fabricius) through Scanning Electron Microscope (SEM)

2019 ◽  
Author(s):  
R. Aruna ◽  
S. Jeyarani ◽  
S. Mohankumar ◽  
C. Durairaj
Keyword(s):  
Spodoptera Litura ◽  
Distal Portion ◽  
Apical Segment ◽  
Middle Region ◽  
Sensilla Basiconica ◽  
Male Antenna ◽  
Sensilla Trichodea ◽  
Sensillum Styloconicum ◽  
Typical Shape ◽  
Scanning Electron

The studies with SEM clearly depicted that the antenna of female was longer than male antenna. Five types of sensilla namely trichodea, chaetica, styloconica, coeloconica and auricillica, and scales were observed on the flagellum of both sexes. Sensilla trichodea were distributed randomly on all segments and were the most frequent type. Six sensilla chaetica were observed on each flagellar segment in both sexes, except in the apical segment. A sensillum styloconicum was always found at the upper-middle region of each flagellar subsegment. This sensillum had a smooth petiole and a conic extremity with one to three apical structures. Sensilla coeloconica were situated from middle to the distal portion of segment. Sensilla auricillica were found among the scales and had the typical shape of rabbit’s ear. Sensilla squamiformia were present on dorsal part of the antenna among scales. They were shorter and finer than scales and were embedded in a socket and point distally. Sensilla basiconica were smaller and least abundant of all sensilla.

Antennal Sensilla of Chrysis shanghalensis (Hymenoptera: Chrysididae), a Larval Ectoparasite of Monema flavescens (Lepidoptera: Limacodidae)

2021 ◽  
Vol 56 (1) ◽  
pp. 1-11
Author(s):  
Shu Z. Yang ◽  
Mei H. Yang ◽  
Yun Xu ◽  
Jin T. Zhang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Natural Enemy ◽  
Tree Species ◽  
External Morphology ◽  
Antennal Sensilla ◽  
Sensilla Basiconica ◽  
Sensilla Trichodea ◽  
Males And Females ◽  
Scanning Electron

Abstract Chrysis shanghalensis Smith (Hymenoptera: Chrysididae) is an ectoparasitoid and important natural enemy of Monema flavescens Walker (Lepidoptera: Limacodidae), a serious defoliator of a number of tree species. The external morphology of the antennal sensilla of this parasitoid was examined by scanning electron microscopy, and types and distribution of sensilla were recorded. The antennae of C. shanghalensis were geniculate in shape and composed of a scape with radicula, a pedicel, and a flagellum divided into 11 flagellomeres in males and females. Cuticular pore and 14 types of sensilla were identified on the antennae of both sexes. These included aporous Böhm's bristles, sensilla trichodea 1, 2, and 3 (nonporous), sensilla trichodea 4 (multiporous), two types of sensilla chaetica (nonporous), four morphological types of sensilla basiconica (multiporous), two morphological types of sensilla coeloconica (multiporous), and one type of sensillum campaniforme (nonporous).

scholarly journals Fine structure and distribution of antennal sensilla of stink bug Arma chinensis (Heteroptera: Pentatomidae)

2019 ◽  
Vol 25 (4) ◽  
pp. 186-198 ◽  
Author(s):  
Jian Zhang ◽  
Xiaojun Zhang ◽  
Chunyu Liu ◽  
Lipeng Meng ◽  
Yulin Zhou
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Distal Part ◽  
Antennal Sensilla ◽  
Stink Bug ◽  
Sensilla Basiconica ◽  
Sensilla Trichodea ◽  
Morphology And Structure ◽  
Heteroptera Pentatomidae ◽  
Scanning Electron

Scanning electron microscopy was used to examine the morphology, ultrastructure, and distribution of antennal sensilla of the stink bug Arma chinensis. Two types of sensilla trichodea (ST1–2), four types of sensilla basiconica (SB 1– 4), one type of sensilla chaetica (SCH), one type of sensilla cavity (SCA) and one type of sensilla coeloconica (SCO) were distinguished on the antennae in both sexes. ST1 and ST2 were absent from the scape and pedicel. SB1 were absent from the scape. SB2 were distributed throughout the antennae. SB3 were located on the second pedicel and the two flagellomeres. SB4 were absent from the second flagellomere. SCH was observed on the second pedicel and the two flagellomeres. SCA and SCO occurred only on the second flagellomere. SB1 clusters occurred on the distal part of the second flagellomere. We compared the morphology and structure of these sensilla to other Heteroptera and discuss their possible functions.

scholarly journals Scanning electron microscopy of the antennal sensilla in female Culicoides paraensis (Diptera: Ceratopogonidae)

1989 ◽  
Vol 84 (4) ◽  
pp. 463-469 ◽  
Author(s):  
M. L. Felippe-Bauer ◽  
P. G. Bauer ◽  
F. C. Silva Filho
Keyword(s):  
Electron Microscopy ◽  
Host Preference ◽  
Type I ◽  
Antennal Sensilla ◽  
Sense Organs ◽  
Biting Midges ◽  
Sensilla Basiconica ◽  
Sensilla Trichodea ◽  
Scanning Electron

We studied by sanning electron microscopy the number, types, structure and distribution of the antennal sensilla of the medical important ceratopogonid Culicoides paraensis (Goeldi). There are about 174 sense organs on the antenmal flagellum which are classified as sensilla chaetica; sharp-tipped and blunt-tipped (type I and II) sensilla trichodea; sensilla basiconica; sensilla coeloconica; sensilla ampullacea and styloconic-type sensilla. The role of antennal sensory organs are discussed regarding the host preference of the biting midges.

scholarly journals Morphology and Distribution of the Antennal Sensilla of Two Species, Megalurothrips usitatus and Thrips palmi (Thysanoptera: Thripidae)

Insects ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 251 ◽  
Author(s):  
Xiao-Shuang Wang ◽  
Ali Shaukat ◽  
Yun Han ◽  
Bo Yang ◽  
Liang-De Tang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Chemical Communication ◽  
Antennal Sensilla ◽  
Sensilla Basiconica ◽  
Sensilla Trichodea ◽  
Sensilla Styloconica ◽  
Thrips Palmi ◽  
Scanning Electron

The morphology and distribution of the antennal sensilla of Megalurothrips usitatus Bagnall and Thrips palmi Karny were examined using scanning electron microscopy (SEM). These are serious pests of various economically important crops, and their antennae are important in chemical communication. The antennae of both species consist of a scape, pedicel, and flagellum, but the flagellum of M. usitatus is made up of six sub-segments, whereas that of T. palmi consists of five sub-segments. Seven morphological sensilla types, including Böhm bristle (BB), sensilla campaniformia (Sca), three types of sensilla basiconica (Sb1, Sb2 and Sb3), two types of sensilla chaetica (Sch1 and Sch2), sensilla styloconica (Sst), sensilla trichodea (St), and sensilla cavity (Scav), were recorded in both species. The scape and pedicels exhibited Sch1, BB and Sca. The flagellum exhibited two types of Sch, three types of Sb, St, Sst and Scav. Based on these results, the putative function of the sensilla of M. usitatus and T. palmi are also discussed.

Scanning Electron Microscopy of antennal sensilla of the Japanese tusser, Antheraea vamamai

1990 ◽  
Vol 48 (3) ◽  
pp. 488-489
Author(s):  
Hong Jian ◽  
Hu Cui ◽  
Ye Congyin ◽  
Gao Qikang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Antennal Sensilla ◽  
Male And Female ◽  
Sensilla Trichodea ◽  
Sensillum Trichodeum ◽  
Sensillum Styloconicum ◽  
Scanning Electron

Antennal surface structure of the Japanese tusser, Antheraea yamamai was observed by scanning electron microscope. The antennae of male and female were bipectinate with scape, pedicel and 33--37 flagellar segments. There were two pairs of equal long branch on eacli flagellar segment of male (Fig.1), but a pair of longer and a pair of shorter on female's (Fig.2).Seven types of sensillum, namely sensillum trichodeum, sensillum cheaticum, sensillum coeloconicum, sensillum campaniformlum, sensillum styloconicum, Bohm's bristle and sensillum squamiformium wer found on the antenna both of male and female. The sensillum trichodeum could be subdivided into long and short according to the shape and surface substructure. The long sensillum trichodeum had a diameter of 4.8μm at its base. It was reratively stright and slightly curved at the tip (Fig.3). The short sensillum trichodeum was 2.5--3.6 μm in diameter at the base. It was shorter, strongly bend down near its base and run parallel with the surface of the antenna (Fig.4). The surface of long and short sensilla trichodea were covered with annular ridges (Fig.5).

scholarly journals The variability of antennal sensilla in Naucoridae (Heteroptera: Nepomorpha)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Agnieszka Nowińska ◽  
Jolanta Brożek
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Morphological Diversity ◽  
Antennal Sensilla ◽  
Sensilla Basiconica ◽  
Sensilla Trichodea ◽  
Sensory Modalities ◽  
Terrestrial Insects ◽  
Scanning Electron

AbstractThe morphology and distribution of sensilla on the surface of the antennae of the naucorids’ species were studied via scanning electron microscopy. Eleven types of sensilla were identified regarding specific sensory modalities, based on their cuticular morphology. Cuticle morphology identifies five types of sensilla trichodea, four types of sensilla basiconica, one type of sensillum coeloconicum and sensillum ampullaceum. Three new types of mechanosensitive sensilla were found. Moreover, the morphological diversity between the antennae allowed the distinction of ten different antennal types that correspond to different sensillar sets. The sensilla found in Naucoridae share similarities with the sensilla of other nepomorphan taxa, as well as of terrestrial insects. However, no sensillar synapomorphy was found between Naucoridae and Aphelocheiridae.

scholarly journals Morphology of the Antennal Sensilla of Notonectoidea and Comparison of Evolutionary Changes in Sensilla Types and Distribution in Infraorder Nepomorpha (Insecta: Heteroptera)

Insects ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1121
Author(s):  
Agnieszka Nowińska ◽  
Jolanta Brożek
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Antennal Sensilla ◽  
Bootstrap Analysis ◽  
Sensilla Basiconica ◽  
Sensilla Trichodea ◽  
Evolutionary Changes ◽  
Sensory Structures ◽  
Scanning Electron

This article introduces the results of a study of three families of Nepomorpha and is the last part of a series of studies that sums up our work on the morphologies of the antennal sensory structures in this taxon. The morphologies and distribution of the sensilla in the families Notonectidae, Pleidae and Helotrephidae were studied under a scanning electron microscope. Six main types (sensilla trichodea, chaetica, campaniformia, basiconica, ampullacea and coeloconica) and ten subtypes (five subtypes of sensilla trichodea and five subtypes of sensilla basiconica) were described. The results were compared with other studies on the antennal sensilla of Nepomorpha in order to assess evolutionary changes within the infraorder. With the use of cladistics analysis, the monophyly of the families Nepidae, Micronectidae, Corixidae and Gelastocoridae was supported. On the other hand, the occurrence of some clades forming superfamilies was weakly supported by bootstrap analysis. These results, supported by presence of the numerous autapomorphies, suggest that antennal sensilla evolved within inner groups.

Morphology and histology of the antenna of the male eastern spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae)

1973 ◽  
Vol 51 (4) ◽  
pp. 443-448 ◽  
Author(s):  
P. J. Albert ◽  
W. D. Seabrook
Keyword(s):  
Electron Microscopy ◽  
Choristoneura Fumiferana ◽  
Spruce Budworm ◽  
Histological Techniques ◽  
Male Antenna ◽  
Sensilla Trichodea ◽  
Female Antenna ◽  
Eastern Spruce Budworm ◽  
Sensilla Styloconica ◽  
Scanning Electron

The number and distribution and the morphology of the various receptors on the male antenna of the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae), are described, using histological techniques and scanning electron microscopy. Receptors described include Böhm bristles, four types of sensilla trichodea, sensilla chaetica, sensilla coeloconica, and sensilla styloconica. Except for the sensilla chaetica, generally more receptors are found on the male than on the female antenna.

scholarly journals Two New Species of the Mite Genus Stereotydeus Berlese, 1901 (Prostigmata: Penthalodidae) from Victoria Land, and a Key for Identification of Antarctic and Sub-Antarctic Species

Taxonomy ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 116-141
Author(s):  
Claudia Brunetti ◽  
Henk Siepel ◽  
Pietro Paolo Fanciulli ◽  
Francesco Nardi ◽  
Peter Convey ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mite Species ◽  
Apical Segment ◽  
Antarctic Species ◽  
Victoria Land ◽  
Continental Antarctica ◽  
Two New Species ◽  
Mite Genus ◽  
Scanning Electron

Two new mite species belonging to the genus Stereotydeus Berlese, 1901 were discovered from locations along the coast of Victoria Land, continental Antarctica. Previous records of this genus in the area under study only reported the presence of S. belli and S. mollis. Although those studies included no morphological analyses, it has since been assumed that only these species were present within the area. Specimens of S. ineffabilis sp. nov. and S. nunatakis sp. nov. were obtained, sometimes in sympatry, from four different localities in Central and South Victoria Land and are here described and illustrated using optical and scanning electron microscopy (SEM) techniques. Features useful for identification of the two new Stereotydeus species include the size of the specimens, the length of the apical segment of pedipalps, the presence/absence of division of the femora, the position of solenidia, the shape and disposition of the rhagidiform organs on the tarsi, the shape of the apical setae of the tarsi, the numbers of aggenital setae and the position of the anal opening. A key to 14 of the 15 currently described Antarctic and sub-Antarctic Stereotydeus species is provided.

scholarly journals Comparative Study of Antennal Sensilla of Corixidae and Micronectidae (Hemiptera: Heteroptera: Nepomorpha: Corixoidea)

Insects ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 734
Author(s):  
Agnieszka Nowińska ◽  
Ping-ping Chen ◽  
Jolanta Brożek
Keyword(s):  
Electron Microscope ◽  
Morphological Characters ◽  
Systematic Position ◽  
Antennal Sensilla ◽  
The Third ◽  
Sensilla Trichodea ◽  
The Family ◽  
Distributional Patterns ◽  
Scanning Electron ◽  
Eleven Species

The goal of this study was to analyze the types and distributional patterns of sensilla in Corixoidea, which is part of the approach to the phylogeny study of Nepomorpha, based on the morphological characters of sensilla. This paper presents the results of the study, with the use of a scanning electron microscope (SEM), on the antennae of species from the families Corixidae and Micronectidae. The antennal sensilla of eleven species from Corixidae and two species from Micronectidae were studied. Five main types of sensilla with several subtypes of sensilla trichodea were found and described. The study has shown that the family Corixidae has a strong uniformity when it comes to antennal sensilla (similar patterns of sensilla trichodea and basiconica), and a similarity to the types and distributions of sensilla in two species of the family Micronectidae. However, significant differences between the families were also discovered (differences in sensilla presence on the first and second antennomeres, lack of sensilla coeloconica on the third antennomere in Micronectidae), which leads to a supportive conclusion of the systematic position of Micronectidae as a family.

Sign in / Sign up

Export Citation Format

Share Document