Scanning eletron microscopy of the first instar larvae of Sarcodexia lambens and Peckia chrysostoma (Diptera: Sarcophagidae)

Leite, Antônio Cesar Rios; Lopes, H. de Souza

doi:10.1590/s0074-02761989000800053

Cited by 9 publications

(7 citation statements)

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“…Trichtrid sensilla with three setae. observed on the thoracic segment of the parasitic first instar larvae of D.hominis, have also been recorded on the larvae of other muscoids (Lopes & Leite, 1'386: Leite & Lopes. 1989;Leite & Guevara, 1993).…”

Section: Discussionmentioning

confidence: 58%

Scanning electron microscopy studies on the first‐instar larva of Dermatobia hominis

Filippis

Leite

1997

Medical Vet Entomology

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First-instar larvae of Dermatobia hominis collected 1, 4 and 7 days after having penetrated experimentally infected rats, were studied by scanning electron microscope (SEM) observation. On the pseudocephalon there are basiconic and trichoid sensilla (antennal sensory complex), and basiconic, coeloconic and campaniform sensilla (maxillary sensory complex). The thoracic segments bear several rows of small, backwardly pointed, spines, and trichoid, campaniform, coeloconic and pit sensilla. The anterior spiracle is a minute opening. Both small and large spines directed posteriorly are on the first to fourth abdominal segments, which also bear coeloconic and companiform sensilla. These sensilla are present on the unarmed (fifth and sixth) and armed (seventh) abdominal segments. The seventh and the last (eight) abdominal segments have forwardly directed spines. Each spiracular plate has two spiracular openings and four spatulate-like structures called sun rays. The anus and the coeloconic sensilla are proeminent on the last segment. The results are compared with other parasitic dipteran larvae, and emphasize that the multiple types of sensilla on D.hominis larva may have importance in establishing the parasitic phase of the life cycle of this insect.

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Section: Discussionmentioning

confidence: 58%

Scanning electron microscopy studies on the first‐instar larva of Dermatobia hominis

Filippis

Leite

1997

Medical Vet Entomology

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“…At least the anterior and posterior spiracles and the cephalopharyngeal skeleton are described, drawn, or pictured for the third instar larvae of practically all species available in the literature. As regarding SEM descriptions, the sarcophagids have been barely and unevenly studied: the first instar larvae of about 70 European Miltogramminae species is known (Szpila, ; Szpila and Pape, , 2007, ); among the Paramachronychiinae, all the larval stages of Wohlfahrtia magnifica (Schiner, 1862) and first instar larvae of Sarcophila latifrons (Fallén, 1817) are known (Ruíz‐Martínez et al, ; Szpila, ); and from Sarcophaginae, the best studied genus is Sarcophaga , although several non‐Palaeartic species belonging to other genera have also been described (Leite and Lopes, ; Lopes and Leite, ; Mendoça et al, ). With regards to Sarcophaga , three species have been partially described (Aspoas, ), four species have descriptions of third instar larva stage alone (Kirk‐Spriggs, ; Pérez‐Moreno et al, ), and all the immature stages have been described for three more species (Awad et al, ; Draber‐Monko et al, ; Singh et al, ; Sukontason et al, , 2006; Suwannayod et al, ).…”

Section: Discussionmentioning

confidence: 99%

Micromorphology of immature stages of Sarcophaga (Liopygia) cultellataPandellé, 1896 (Diptera: Sarcophagidae), a forensically important fly

Ubero-Pascal

Paños

García

et al. 2014

Microscopy Res & Technique

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The Sarcophagidae are one of the most numerous groups of Diptera in the world, consisting of many species of forensic interest, whose immature stages are useful in the estimation of postmortem interval. The immature stages of some species of forensic importance still remain unknown or undescribed, like in the case of Sarcophaga (Liopygia) cultellata Pandellé, 1986, a species restricted to the Iberian Peninsula, south of France and north of Italy, which shares a ecological niche with species of the same subgenus, e.g., Sarcophaga (Liopygia) argyrostoma (Robineau-Desvoidy, 1830) and Sarcophaga (Liopygia) crassipalpis Macquart, 1839, making it necessary to lay the groundwork for a proper specific differentiation before it can be successfully applied in forensic practice. This study provides the first micromorphological description of all preimaginal stages of S. (L.) cultellata using light microscopy and scanning electron microscopy (SEM), the results of which allow the morphology of the main features to be followed during the immature life cycle. We propose a combination of features for distinguishing Liopygia from other sarcophagid subgenera, based on the current level of morphological knowledge of immature stages. S. (L.) cultellata can be differentiated from S. (L.) argyrostoma and S. (L.) crassipalpis in every immature stage by both light microscopy and SEM. The presence of tegumental warts and a fan-shaped anterior spiracle with a single row of 15-18 respiratory papillae allow distinguishing the third instar larvae of S. (L.) cultellata from other Sarcophaga species described hitherto by SEM. Identification keys based on light microscopy observations are provided, covering all the immature stages of Liopygia subgenus occurring in the Iberian Peninsula.

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“…Herein, we found longitudinal scars on mouthhooks only in second instar, while Leite and Lopes (1989) found them in first instar larvae (using SEM). In comparing P. (S.) lambens with other species in the genus, similarity is clear and immature stages are difficult to recognize for species.…”

Section: Discussionmentioning

confidence: 62%

Description of immature stages of the flesh flyPeckia(Sarcodexia)lambens(Wiedemann) (Diptera: Sarcophagidae) provides better resolution for taxonomy and forensics

et al. 2015

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The necrophagous and saprophagous flesh fly Peckia (Sarcodexia) lambens and other flesh flies are similar to one another in general external morphology. Owing to these similarities, larvae are often misidentified, which cause errors in forensic analysis. Here, to resolve these potential problems, we describe immature stages of Peckia (Sarcodexia) lambens using scanning and optical microscopy, in which we emphasize conspicuous characters for possible identification. The dorsal bridge reaches the parastomal bars in first instar larvae (in contrast with some other flesh flies). Additionally, in other larval stages, mouthhook shape, pseudocephalon, distribution of spines and the anal segment may be important characters to identify species. Figures are also included for characters clarification.

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Scanning eletron microscopy of the first instar larvae of Sarcodexia lambens and Peckia chrysostoma (Diptera: Sarcophagidae)

Abstract: The first instar larvae of Sarcodexia lambens (Wiedemann, 1830) and Peckia chrysostoma (Wiedemann, 1830) dissected from females reared in laboratory, are described under scanning electron microscope (SEM)

Cited by 9 publications

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Scanning electron microscopy studies on the first‐instar larva of Dermatobia hominis

Scanning electron microscopy studies on the first‐instar larva of Dermatobia hominis

Micromorphology of immature stages of Sarcophaga (Liopygia) cultellataPandellé, 1896 (Diptera: Sarcophagidae), a forensically important fly

Description of immature stages of the flesh flyPeckia(Sarcodexia)lambens(Wiedemann) (Diptera: Sarcophagidae) provides better resolution for taxonomy and forensics

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