Comparative study of the stridulatorium sulcus, buccula and rostrum of nymphs of Triatoma klugi Carcavallo et al, Triatoma vandae Carcavallo et al and Triatoma williami Galvão et al (Hemiptera: Reduviidae)

Silva, Maria B A; Jurberg, José; Galvão, Cléber; Barbosa, Helene Santos

doi:10.1590/s1519-566x2010000100006

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…For classification of sensilla, the systems of Shields [31] were used in addition to the more specialized nomenclature from other studies [8,32,33,34]. The terminology of mouthparts is adapted from that of Spangenberg et al [35].…”

Section: Methodsmentioning

confidence: 99%

Fine Morphology of the Mouthparts in Cheilocapsus nigrescens (Hemiptera: Heteroptera: Miridae) Reflects Adaptation for Phytophagous Habits

Wang

Dai

2019

Insects

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To obtain a better understanding of feeding adaptations, the fine structure of the mouthparts in adults of Cheilocapsus nigrescens Liu and Wang, including the sculpture and interlocking mechanisms of the stylets and distribution and abundance of sensilla located on the labium, were studied using scanning electron microscopy. The mouthparts are similar to those of previously studied mirid species in most aspects and composed of a cone-shaped labrum, a tube-like, four-segmented labium with a deep groove on the anterior side, and a stylet fascicle consisting of two mandibular and two maxillary stylets. Each mandibular stylet tip has about 6–8 indistinctive notches, which help in penetrating the leaf surface. A series of transverse squamous textures are present on the adaxial surface of the mandibular stylets. The maxillary stylets interlock to form a food canal and a salivary canal, equipped with an external longitudinal process that engages grooves in the mandibular stylets. Three kinds of sensilla, including four types of sensilla basiconica (I, II, III, and IV), four types of sensilla trichodea (I, II, III, and IV), and one type of sensillum campaniformium, occur at different locations on the labium. Among them, sensilla trichodea I and II are the most abundant; sensilla basiconica II occurs between the first segment and second segment, and between the third and fourth segment. The tripartite apex of the labium consists of two lateral lobes and an apical plate. Each lateral lobe possesses a field of 11 sensilla basiconica IV and 1 sensillum trichodeum IV. The morphology of the mouthparts and the distribution of sensilla located on the labium in C. nigrescens are discussed with respect to their possible taxonomic and functional significance. In particular, the indistinct notches of the mandibular stylet and smooth inner surface of the right maxillary stylets are suited primarily for phytophagy.

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Section: Methodsmentioning

confidence: 99%

Fine Morphology of the Mouthparts in Cheilocapsus nigrescens (Hemiptera: Heteroptera: Miridae) Reflects Adaptation for Phytophagous Habits

Wang

Dai

2019

Insects

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“…This structure was appropriate to separating the species of T. maculata and T. pseudomaculata [33]. In a study of the T. williami and T. klugi , nymphs of 3rd instar differ on ornamentation and quantity of rifts in the internal central area of the stridulatory sulcus [32]. In our studies, the stridulatory sulcus can also be used to separate T. carcavalloi, T. circummaculata , and T. rubrovaria species.…”

Section: Resultsmentioning

confidence: 98%

Characterization of the Buccula, Rostrum, Stridulatory Sulcus, Scutellum, and External Female Genitalia ofTriatoma carcavalloi(Jurberg, Rocha & Lent, 1998),Triatoma circummaculata(Stål, 1859), andTriatoma rubrovaria(Blanchard, 1843) (Hemiptera, Reduviidae, Triatominae)

Almeida

Freitas

Oliveira

et al. 2019

Journal of Parasitology Research

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In Brazil, Triatoma rubrovaria (Blanchard, 1843) is the most important species in epidemiological terms in the State of Rio Grande do Sul, due to its wide geographical distribution in this state, followed by T. carcavalloi (Jurberg, Rocha & Lent, 1998) and T. circummaculata (Stål, 1859). Structural analysis of the ventral region of the head (rostrum and buccula), thorax (stridulatorium sulcus and scutellum), and external female genitalia of adults of T. rubrovaria, T. carcavalloi, and T. circummaculata is described here. Scutellum, head, rostrum, and part of the thorax (prosternum) containing the stridulatory sulcus, in both male and female, and the sixth abdominal segment of the female, containing the external genitalia, were processed for scanning electron microscopy studies as routine. Morphological differences in the analyzed structures for all the three Triatoma species studied were detected under scanning electron microscopy. This study confirms the grouping of the T. rubrovaria, T. carcavalloi, and T. circummaculata in ‘T. rubrovaria subcomplex’ by their morphological similarities.

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“…63 Morphology and key (MO and MEV) Galíndez-Girón et al 35 Triatoma tibiamaculata Abdominal structures of 5-instar nymphs Rosa & Barata, 44 Triatoma vandae Description of nymphs (MO) and visualization of structures using SEM. Silva et al 72 Comparative study of the stridulatorium sulcus, buccula and rostrum of nymphs Silva et al 67 Triatoma vitticeps Antenna morphometry and morphology Rosa et al 45 Morphology compared to other Reduviidae Weirauch 73 Triatoma williami Description of nymphs (MO) and visualization of structures using SEM. Silva et al 72 Comparative study of the stridulatorium sulcus, buccula and rostrum of nymphs Silva et al 67 Morphology and key (MO and SEM) Galíndez-Girón et al 35 Diverse species Some structures and key for Triatominae (MO and SEM) Galíndez-Girón et al 35 …”

Section: Resultsmentioning

confidence: 99%

Checklist and phenetics studies of nymphs of two species of triatomines: Triatoma lenti Sherlock & Serafim, 1967 and Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira, Barata, 2002 (Hemiptera: Reduviidae: Triatominae)

Rosseto

Paiva

Belintani

et al. 2021

Rev. Soc. Bras. Med. Trop.

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INTRODUCTION: Triatoma lenti and Triatoma sherlocki are endemic species of the State of Bahia, located in northeastern Brazil, where they have records of domiciliation in the human environment. In view of the epidemiological aspect and taxonomic importance of these species for the systematics of the Triatoma genus, a study was carried out with nymphs of all five instars. METHODS An extensive review of studies on nymphs from the subfamily Triatominae is presented. Morphology was studied using a scanning electron microscope and morphometric analyses. RESULTS: The morphological study allowed us to characterize and discriminate species by means of scanning electron microscope of the last abdominal segment. In addition, the results show morphometric variability, with the total size of the head that best discriminates the species. CONCLUSIONS: Studies on nymphs are fundamental to the ecosystem; however, the literature on the immature forms of certain groups is scarce, difficult to use, or nonexistent. Therefore, this study includes morphological and morphometric data of the nymphal instars of T. lenti and T. sherlocki , corroborating the specific taxonomy of these species.

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Comparative study of the stridulatorium sulcus, buccula and rostrum of nymphs of Triatoma klugi Carcavallo et al, Triatoma vandae Carcavallo et al and Triatoma williami Galvão et al (Hemiptera: Reduviidae)

Cited by 5 publications

References 5 publications

Fine Morphology of the Mouthparts in Cheilocapsus nigrescens (Hemiptera: Heteroptera: Miridae) Reflects Adaptation for Phytophagous Habits

Fine Morphology of the Mouthparts in Cheilocapsus nigrescens (Hemiptera: Heteroptera: Miridae) Reflects Adaptation for Phytophagous Habits

Characterization of the Buccula, Rostrum, Stridulatory Sulcus, Scutellum, and External Female Genitalia ofTriatoma carcavalloi(Jurberg, Rocha & Lent, 1998),Triatoma circummaculata(Stål, 1859), andTriatoma rubrovaria(Blanchard, 1843) (Hemiptera, Reduviidae, Triatominae)

Checklist and phenetics studies of nymphs of two species of triatomines: Triatoma lenti Sherlock & Serafim, 1967 and Triatoma sherlocki Papa, Jurberg, Carcavallo, Cerqueira, Barata, 2002 (Hemiptera: Reduviidae: Triatominae)

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