Ultrastructural analysis of the antennae of <i>Hemilucilia segmentaria</i> (Diptera: Calliphoridae), a blowfly of forensic importance

Hemilucilia segmentaria (Fabricius, 1805) is a Neotropical blowfly species of forensic importance, with necrophagous and asynanthropic habits. In this study, the antennal ultrastructure of H. segmentaria was examined using scanning electron microscopy. The three antennal segments are covered by microtrichia. Sensilla chaetica were detected only on the scape and pedicel. Setiferous plaques and a pedicellar button were observed on the pedicel. Four types of sensilla were found on the postpedicel, including s. trichoidea, s. basiconica (subtype I, II and III), s. coeloconica subtype I, and sensory pits with s. coeloconica subtype II. This is the first time that the fine structure of the antennae of H. segmentaria was studied. Our results constitute a solid base for research on comparative and functional morphology in H. segmentaria and other blowflies.

Keywords:
Fine structure; Necrophagous fly; Sensilla; Scanning electron microscopy

Authorship

Deivys Moises Alvarez-Garcia ³3E-mail: deivysalvarez@gmail.com

conceptualization

writing - review & editing

investigation

visualization

writing - original draft

discussion of the results

reviewed and approved the final version

Universidad de Sucre (UNISUCRE), Grupo de Investigación en Zoología y Ecología. Sincelejo, Sucre, Colombia.Universidad de SucreColombiaSincelejo, Sucre, ColombiaUniversidad de Sucre (UNISUCRE), Grupo de Investigación en Zoología y Ecología. Sincelejo, Sucre, Colombia.

Universidade de São Paulo (USP), Instituto de Biociências (IB-USP), Departamento de Zoologia. São Paulo, SP, Brasil.Universidade de São PauloBrasilSão Paulo, SP, BrasilUniversidade de São Paulo (USP), Instituto de Biociências (IB-USP), Departamento de Zoologia. São Paulo, SP, Brasil.

http://orcid.org/0000-0002-7545-5638

María Paula Sierra-Juez ⁴4E-mail: mpaulasierra1998@gmail.com

investigation

visualization

writing - original draft

discussion of the results

reviewed and approved the final version

http://orcid.org/0000-0002-4516-1727

Dimas Kenji Sakamoto ⁵5E-mail: dimassakamoto@gmail.com

investigation

visualization

writing - original draft

discussion of the results

reviewed and approved the final version

http://orcid.org/0000-0003-0852-9577

Silvio Shigueo Nihei ⁶6E-mail: silvionihei@gmail.com

investigation

visualization

writing - original draft

discussion of the results

reviewed and approved the final version

http://orcid.org/0000-0002-6887-6282

³E-mail: deivysalvarez@gmail.com

⁴E-mail: mpaulasierra1998@gmail.com

⁵E-mail: dimassakamoto@gmail.com

⁶E-mail: silvionihei@gmail.com

Edited by:

Kirstern Lica Follmann Haseyama

CONFLICTS OF INTEREST:

Authors declare there are no conflicts of interest.

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Figures

Figures (2)

Thumbnail

Figure 1
Antennal ultrastructure of Hemilucilia segmentaria (Fabricius). (A) General view of antenna. The upper box shows the basal region of arista. The lower box shows three sensory pits on the postpedicel. (B) Detail of scape and pedicel in lateral view. The four arrows on the pedicel show the location of setiferous plaques (detail in box). (C) Posterior view of the pedicel showing the pedicellar cone and distal articular surface. Box D corresponds to Fig. 1D. The star indicates the location of the pedicellar button. (D) Detail of microtrichia on the distal articular surface. (E) Pedicellar button. (F) Detail of surface of postpedicel showing different types of sensilla and microtrichia. Abbreviations: Ar = Arista; Ba-I, Ba-II and Ba-III = sensilla basiconica subtype I, I and III, respectively; Br = bristles or setae; Co = sensilla coeloconica; Mt = microtrichia; Pc = pedicellar cone; Pd = pedicel; Pp = postpedicel; Sc = scape; Tr = sensilla trichoidea. Scale bars (µm): A = 100 (upper and lower box = 10), B = 100 (box = 12.5); C = 20; D = 10; E = 1; F = 10.

Thumbnail

Figure 2
Detail of sensilla on the postpedicel of Hemilucilia segmentaria (Fabricius). (A) Sensilla trichoidea (Tr) and sensilla basiconica subtype II (Ba-II). (B) Basal region of sensilla trichoidea, some pores are indicated by arrows. (C) Sensilla basiconica subtype I (Ba-I). (D) Sensilla basiconica subtype III (Ba-III). (E) Sensilla coeloconica subtype I (Co-I). (F) Sensory pit with sensilla coeloconica subtype II (Co-II). Scale bars (µm): A, C, D, E = 1; B = 200; F = 2.

Figure 1 Antennal ultrastructure of Hemilucilia segmentaria (Fabricius). (A) General view of antenna. The upper box shows the basal region of arista. The lower box shows three sensory pits on the postpedicel. (B) Detail of scape and pedicel in lateral view. The four arrows on the pedicel show the location of setiferous plaques (detail in box). (C) Posterior view of the pedicel showing the pedicellar cone and distal articular surface. Box D corresponds to Fig. 1D. The star indicates the location of the pedicellar button. (D) Detail of microtrichia on the distal articular surface. (E) Pedicellar button. (F) Detail of surface of postpedicel showing different types of sensilla and microtrichia. Abbreviations: Ar = Arista; Ba-I, Ba-II and Ba-III = sensilla basiconica subtype I, I and III, respectively; Br = bristles or setae; Co = sensilla coeloconica; Mt = microtrichia; Pc = pedicellar cone; Pd = pedicel; Pp = postpedicel; Sc = scape; Tr = sensilla trichoidea. Scale bars (µm): A = 100 (upper and lower box = 10), B = 100 (box = 12.5); C = 20; D = 10; E = 1; F = 10.

Figure 2 Detail of sensilla on the postpedicel of Hemilucilia segmentaria (Fabricius). (A) Sensilla trichoidea (Tr) and sensilla basiconica subtype II (Ba-II). (B) Basal region of sensilla trichoidea, some pores are indicated by arrows. (C) Sensilla basiconica subtype I (Ba-I). (D) Sensilla basiconica subtype III (Ba-III). (E) Sensilla coeloconica subtype I (Co-I). (F) Sensory pit with sensilla coeloconica subtype II (Co-II). Scale bars (µm): A, C, D, E = 1; B = 200; F = 2.

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Ultrastructural analysis of the antennae of <i>Hemilucilia segmentaria</i> (Diptera: Calliphoridae), a blowfly of forensic importance

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[1] ³E-mail: deivysalvarez@gmail.com