Scanning electron microscopy of antennal sensilla of Megastigmus sichuanensis Doğanlar et Zheng (Hymenoptera: Torymidae)

Huang, Zong‐You; Liu, Junyan; Zhang, Yujing; Guo, Chunhui; Zhende, Yang; Lu, Wen; Zheng, Xia‐Lin

doi:10.1016/j.jcz.2017.11.009

Cited by 8 publications

(8 citation statements)

References 16 publications

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“…Generally, female parasitic wasps use antennal sensilla to locate host insects through herbivore‐induced plant odors, while male wasps may use them to locate females via sex pheromones (Bleeker, Smid, van Aelst, van Loon, & Vet, 2004). Therefore, sexual dimorphism in antennal sensilla in terms of color, number of flagellomeres, abundance and distribution has been reported in many parasites (Ahmed et al, 2013; Huang et al, 2017; Onagbola, Boina, Hermann, & Stelinski, 2009; Silva, Pereira, Spranghers, Zanuncio, & Serrao, 2016).…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure of antennal sensilla of Copidosomopsis nacoleiae (Eady) (Hymenoptera: Chalcidoidea: Encyrtidae), a parasitoid of Diaphania angustalis (Snellen) (Lepidoptera: Crambidae)

Zhang

Dong-yu

Chao

et al. 2021

Microscopy Res & Technique

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The antennal sensilla of Copidosomopsis nacoleiae (Eady) (Hymenoptera: Chalcidoidea: Encyrtidae) were observed under scanning and transmission electron microscopy in this study. The antennae of C. nacoleiae are geniculate, and the flagellum is composed of five subsegments in males and six in females. Six types of sensilla were observed, including sensilla trichodea, sensilla chaetica, sensilla basiconic capitate pegs, sensilla placodea, sensilla basiconica, and Böhm's bristles. Sensilla trichodea were evenly distributed throughout the antennae. Sensilla chaetica, sensilla basiconic capitate pegs and sensilla placodea were found on the flagellomeres. Sensilla basiconica were only found on the club, and Böhm's bristles were found on the radicle and the pedicel. Sensilla trichodea, sensilla placodea, sensilla chaetica, and sensilla basiconic capitate pegs were found to be the most common sensilla of the parasitoids in the superfamily Chalcidoidea. The external and internal characteristics, types, number, distribution, and dimensions of these sensilla are described, and their possible functions are discussed in accordance with host‐detection behavior. Future studies on the host location mechanisms of C. nacoleiae will be based upon these observations.

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Section: Introductionmentioning

confidence: 99%

Ultrastructure of antennal sensilla of Copidosomopsis nacoleiae (Eady) (Hymenoptera: Chalcidoidea: Encyrtidae), a parasitoid of Diaphania angustalis (Snellen) (Lepidoptera: Crambidae)

Zhang

Dong-yu

Chao

et al. 2021

Microscopy Res & Technique

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“…The antennae, as an essential part of the olfactory system in parasitic Hymenoptera, are involved in various sensitivities caused by physical and chemical stimuli, including physical/mechanical cues (e.g., host vibration), habitat searching, host discrimination, host detection, host acceptance, and oviposition by using different types of sensilla (Isidoro et al, 1996). Antennal sensilla have been investigated in some hymenopteran parasitoids, including Trichogrammatidae (Amornsak et al, 1998), Pteromalidae (Onagbola & Fadamiro, 2008), Braconidae (Ahmed et al, 2013), Aphelinidae (Zhang et al, 2014), Encyrtidae (Fortuna et al, 2015), Eulophidae (Zheng et al, 2016), and Torymidae (Huang et al, 2017). To better understand host-detection mechanisms of Q. mendeli adults, the external and internal morphology, types, number, distribution, length, and width of antennal sensilla were investigated.…”

Section: Introductionmentioning

confidence: 99%

Ultrastructure of Female Antennal Sensilla of an Endoparasitoid Wasp,Quadrastichus mendeliKim & La Salle (Hymenoptera: Eulophidae: Tetrastichinae)

et al. 2018

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The antennal sensilla of female Quadrastichus mendeli Kim & La Salle (Hymenoptera: Eulophidae: Tetrastichinae) were observed with scanning and transmission electron microscopy in this study. The antenna of Q. mendeli was geniculate, and the flagellum was composed of seven subsegments. Six distinct types of sensory receptors were observed, including sensilla basiconic capitate peg, sensilla böhm, sensilla chaetica, sensilla campaniformia, sensilla placodea and sensilla trichodea. Sensilla basiconic capitate pegs were found on the flagellomeres, and Böhm sensilla were found on the basal part of scape and the pedicel. Two morphological subtypes of sensilla chaetica were found on the antennae, and sensilla campaniformia were only found on the pedicel. Sensilla placodea were divided into two morphological subtypes that were found on the flagellomeres. Sensilla trichodea were found on the 2nd-6th flagellomere. By comparison to existing antennal sensilla, it was found that sensilla basiconic capitate peg, sensilla chaetica, sensilla placodea and sensilla trichodea were the most common sensilla of the parasitoids of Eulophidae. The external and internal morphology, types, number, distribution, length, and width of these sensilla were described, and their possible functions are discussed in conjunction with the host-detection behavior. Future studies on the host location mechanisms in Q. mendeli will be facilitated by these observations.

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“…Megastigmus sichuanensis Doğanlar & Zheng was described in 2017 (Doğanlar et al ., 2017; Huang et al ., 2017). Nuclear 28S DNA and mitochondrial COI DNA sequences obtained from specimens provided by our colleagues in China fully matched M. zvimendeli (fig.…”

Section: Resultsmentioning

confidence: 99%

“…Because the name M. zvimendeli has been cited in publications regarding the species' use in biocontrol (Dittrich-Schröder et al, 2014;Bush et al, 2017;Mendel et al, 2017) Megastigmus sichuanensis Doğanlar & Zheng was described in 2017 (Doğanlar et al, 2017;Huang et al, 2017). Nuclear 28S DNA and mitochondrial COI DNA sequences obtained from specimens provided by our colleagues in China fully matched M. zvimendeli ( fig.…”

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confidence: 90%

Multivariate ratio analysis and DNA markers reveal a new Australian species and three synonymies in eucalypt-gall-associatedMegastigmus(Hymenoptera: Megastigmidae)

Nahrung

Morgan

et al. 2020

Bull. Entomol. Res.

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The genus Megastigmus Dalman, 1820 (Hymenoptera: Megastigmidae) contains potential biocontrol agents of the invasive eucalypt galling chalcid Leptocybe spp. (Hymenoptera: Eulophidae), with several species reported in various parts of the world. Species discrimination is challenging due to intraspecific morphological variation, difficulty in measuring sizes of body parts, and the lack of information regarding the global distribution of parasitic Megastigmus. We used two species commonly associated with Leptocybe in its native range to review taxonomic methods and determine the most reliable morphological characters in species delimitation. We examined size variation of body characters, and conducted species discrimination using multivariate ratio analysis, mitochondrial Cytochrome c oxidase subunit 1 (COI) and nuclear 28S rDNA (28S) sequences. Morphological traits were effective in species delimitation yet revealed high variation in several characters employed in current keys. Knowledge generated on morphology and DNA justified the description of a new species, M. manonae, sp. n., the first record of M. pretorianensis in Australia, and revised diagnostic characters for M. zvimendeli. Based on these diagnostic characters and molecular data, we synonymize three species (M. judikingae, syn. n., from Australia, M. sichuanensis, syn. n., from China and M. icipeensis, syn. n., from Kenya) with M. zvimendeli. Our findings highlight the importance of molecular markers in assisting taxonomic decision-making and the need for coordinated work in identifying Megastigmus associated with Leptocybe spp.

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Scanning electron microscopy of antennal sensilla of Megastigmus sichuanensis Doğanlar et Zheng (Hymenoptera: Torymidae)

Cited by 8 publications

References 16 publications

Ultrastructure of antennal sensilla of Copidosomopsis nacoleiae (Eady) (Hymenoptera: Chalcidoidea: Encyrtidae), a parasitoid of Diaphania angustalis (Snellen) (Lepidoptera: Crambidae)

Ultrastructure of antennal sensilla of Copidosomopsis nacoleiae (Eady) (Hymenoptera: Chalcidoidea: Encyrtidae), a parasitoid of Diaphania angustalis (Snellen) (Lepidoptera: Crambidae)

Ultrastructure of Female Antennal Sensilla of an Endoparasitoid Wasp,Quadrastichus mendeliKim & La Salle (Hymenoptera: Eulophidae: Tetrastichinae)

Multivariate ratio analysis and DNA markers reveal a new Australian species and three synonymies in eucalypt-gall-associatedMegastigmus(Hymenoptera: Megastigmidae)

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