scholarly journals Ultrastructure of Antennal Sensilla in Adults of Dioryctria rubella Hampson (Lepidoptera: Pyralidae)

Insects ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 821
Author(s):  
Jin Xu ◽  
Caiping Deng ◽  
Wenfeng Lu ◽  
Sanan Wu
Keyword(s):  
Essential Role ◽  
Biological Function ◽  
Environmental Cues ◽  
Antennal Sensilla ◽  
Functional Studies ◽  
Sensilla Trichodea ◽  
Plant Chemical ◽  
Lepidoptera Pyralidae ◽  
Solid Foundation ◽  
Scanning Electron

Antennal sensilla play an essential role in insect life because they receive environmental cues. Dioryctria rubella is an important pine pest in China, but information on the morphology and distribution of its sensilla is limited. To elucidate the mechanism of insect-plant chemical communication, we examined the insect antennae and sensilla by scanning electron microscopy. The results showed that the antennae of D. rubella were filiform and consisted of a basal scape, a pedicel, and a flagellum with tapered flagellomeres. We identified seven types of sensilla, including trichodea, coeloconica, auricillica, basiconica, styloconica (two subtypes), Böhm’s bristles, and squamiformia, all of which were distributed on the antennae of both sexes. Nevertheless, some sensilla exhibited various degrees of sexual dimorphism; for instance, sensilla trichodea, squamiformia, and basiconica were more abundant in males than in females. Many pores were observed on the surface of the cuticular wall in sensilla trichodea and auricillica, and their biological function may be related to olfaction. This study presented a thorough inventory of sensilla on the antennae of D. rubella and laid a solid foundation for future functional studies.

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.

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.

scholarly journals Estudo comparativo das sensilas antenais de operárias de Melipona scutellaris (Hymenoptera: Apidae) de diferentes altitudes

2013 ◽  
Vol 6 (1) ◽  
pp. 64-67 ◽  
Author(s):  
Marcília Aparecida Nascimento ◽  
Tânia Maria Fernandes Salomão ◽  
Gustavo Martins
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Geographic Location ◽  
Dorsal Surface ◽  
Sem Analysis ◽  
Antennal Sensilla ◽  
Sensilla Trichodea ◽  
Different Populations ◽  
Different Altitudes ◽  
Scanning Electron

Sensilas são estruturas sensoriais presentes nas antenas dos insetos e são responsáveis pela higro- quimio-, termo- e mecanorrecepção. No presente trabalho, as sensilas presentes nos três flagelômeros (F) mais distais de Melipona scutellaris Latreille (Hymenopera: Apidae) coletadas em diferentes altitudes (200 e acima de 900m) foram avaliadas qualitativamente e quantitativamente. A identificação, contagem e medição das sensilas foram feitas a partir de imagens da superfície dorsal das antenas que foram obtidas com o auxílio de microscópio eletrônico de varredura. Foram observadas as sensilas placoide, basicônica, celocônica, ampulácea, campaniforme e tricoide reta e curvada. Comparativamente, o grupo localizado a 200m de altitude possui sensilas tricoides retas em maior quantidade nos três flagelômeros, enquanto que o grupo de altitudes acima de 900m apresentou maior quantidade de sensilas tricoides curvadas no F9, sendo as mesmas maiores para o F10. Essas diferenças foram discutidas em função da localização geográfica dos diferentes grupos aqui estudados. Os resultados da investigação da estrutura antenal de M. scutellaris contribuem para um melhor entendimento da biologia dessa espécie. A Comparative Study of the Antennal Sensilla of Melipona scutellaris Latreille (Hymenoptera: Apidae) Workers From Different Altitudes Abstract. The sensilla are sensitive structures located in different insect parts including antennae. They are responsible for the hygro- chemo-, thermo- and mechanoreception. In the present work the antennal topography of two different populations of Melipona scutellaris Latreille (Hymenopera: Apidae) from different altitudes (200 and above 900m) were studied considering the last three distal antennal flagelomers (F). Images of the antennal surface were obtained with the aid of the scanning electron microscope (SEM). The SEM analysis showed that the sensilla placodea, basiconic, coeloconic, ampullacea, campaniform and trichodea are present in the dorsal surface of the M. scutellaris antennae. The number of sensilla trichodea of the straight subtype is greater in the last three flagelomers in individuals of 200m altitude, while individuals located above 900m altitude has a greater number of sensilla trichodea of the subtype curved in the F9 and they have greater length in individuals of 900m altitude only in the F10. These differences were discussed according to the geographic location of the different groups studied here. This work represents the first assessment to antennal structure of M. scutellaris and contributes to a better understanding of the biology of this species.

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 Insect evolution toward aquatic habitats; reassessment of antennal sensilla in the water bug families Ochteridae, Gelastocoridae and Aphelocheiridae (Hemiptera: Heteroptera: Nepomorpha)

2020 ◽  
Vol 89 (4) ◽  
pp. 412-433 ◽  
Author(s):  
Agnieszka Nowińska ◽  
Jolanta Brożek
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electron Microscope ◽  
Comparative Morphology ◽  
Antennal Sensilla ◽  
Aquatic Habitats ◽  
Sensilla Trichodea ◽  
The One ◽  
Water Bugs ◽  
Scanning Electron

The first comparative morphology study on antennal sensilla of Ochteridae, Gelastocoridae and Aphelocheiridae, carried out with the use of a scanning electron microscope, is provided. Our research hypothesis was: the antennal sensilla of the studied families reflect their different adaptations for use in aquatic habitats, while maintaining a common set of sensilla similar to other water bugs (Nepomorpha). Therefore, the number and placement of antennal sensilla of several species in the mentioned families were studied using scanning electron microscopy. Nine main types of mechano- chemo- and thermo-hygroreceptive sensilla were confirmed on their surface, including sensilla trichodea, chaetica, club-like, campaniformia, basiconica, coeloconica, plate-like, ampullacea and sensilla placodea multilobated. While seven of these were already documented in other species, two of them (sensilla plate-like and placodea multilobated) were yet to be documented on the antennae of Nepomorpha. All families display differences in the shape and length of antennae as well as among sensilla types. These findings support our hypothesis regarding differences in sensillar structures among families adapted differently to suitable niches. Differences between these families and previously studied nepomorphan taxa (Nepoidea) were also documented. However, the general set of sensilla observed on the antennae of the studied species is very similar to the one documented in Nepoidea. Therefore, we confirmed our assumptions regarding similarities in antennal sensilla between the studied families and other nepomorphan insects.

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.

Sign in / Sign up

Export Citation Format

Share Document