Ultrastructure of the labial tip sensilla of the tarnished plant bug, Lygus lineolaris (P. de Beauvois) (Hemiptera : Miridae)

Hatfield, L. D.; Frazier, James L.

doi:10.1016/0020-7322(80)90036-7

Cited by 31 publications

(39 citation statements)

References 6 publications

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“…These transverse bars are separated from each other by slightly sclerotized membranes in which the sense organs are located [10, 13, 14]. In particular, in the heteropterans the tips of the labium (two lateral lobes) have gustative sensilla, frequently the contact chemoreceptive sensilla, and rarely also the olfactive, hygro-, and thermoreceptive sensilla as well as the tactile sensilla [1, 15, 16]. Several types of these sensilla on the labial tip have been described in many species of the Pentatomomorpha [17–23], the Nepomorpha [1, 24] and the Gerromorpha [Brożek and Zettel, in prep].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis and Systematic Mapping of the Labial Sensilla in the Nepomorpha (Heteroptera: Insecta)

Brożek

2013

The Scientific World Journal

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The present study provides new data concerning the morphology and distribution of the labial sensilla of 55 species of 12 nepomorphan families (Heteroptera: Nepomorpha) using the scanning electron microscope. On the labial tip, three morphologically distinct types of chemosensilla have been identified: two types of papillae sensilla and one type of peg-in-pit sensilla. Twenty-one morphologically distinct types of the mechanosensilla as well as two types of the trichoid sensilla (contact-chemoreceptive sensillum) have been identified on all labial segments in representatives of subfamilies. In Nepomorpha, morphological ground plan of the labial sensory structures is represented by an apical sensory field with 10–13 pairs of papillae sensilla and the peg-in-pit ones placed more laterally; numerous trichoid sensilla are placed on the IV segment; the chaetica sensilla are present and placed in groups or rows distributed along the labium near the labial groove on the dorsal side, and also several chaetica sensilla are unevenly scattered on the surface of that segment; the cupola and peg sensilla are numerous and evenly scattered on the fourth labial segment; the prioprerecptive sensilla, one pair is positioned on the dorsal side and on the fourth segment of the labium. The new apomorphical characters have been established for the labial sensilla in the Nepomorpha.

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Section: Introductionmentioning

confidence: 99%

Comparative Analysis and Systematic Mapping of the Labial Sensilla in the Nepomorpha (Heteroptera: Insecta)

Brożek

2013

The Scientific World Journal

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“…Hemipterans may detect subtle changes in the chemical or physiological makeup of prey (Cohen 1995), using sensory setae on their labial tip that serve as chemoreceptors (Hatfield & Frazier 1980). Furthermore, saliva secreted by hemipterans during feeding is almost immediately reingested and exposed to gustatory receptors (Miles 1972).…”

Section: Discussionmentioning

confidence: 99%

Prey selection byDicyphus hesperusof infected or parasitized greenhouse whitefly

Labbé

Cloutier

Brodeur

2006

Biocontrol Science and Technology

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The development of effective biological control programs in which predators are integrated with other natural enemies such as parasitoids and entomopathogens requires an understanding of their interactions. In this study we examined the extent to which the omnivorous mirid bug Dicyphus hesperus , an effective biological control agent of greenhouse whiteflies, accepts prey that are either parasitized by the specialist whitefly parasitoid, Encarsia formosa or infected by the generalist fungal entomopathogen, Beauveria bassiana . In non-choice laboratory experiments, we measured how parasitism and infection of greenhouse whitefly, Trialeurodes vaporariorum , as related to parasitoid age and course of fungal infection, might alter the probability of feeding by second instar or adult female predators. Predation by D. hesperus was similar for parasitized and unparasitized whiteflies, regardless of parasitoid age. However, predators generally avoided feeding on infected whiteflies, particularly when infection was manifested through the presence of oosporein or hyphae on the surface of prey.

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“…10.7 B, p. 52), is identical to the elongated placoid sensillum of Mesoveliidae and Hebridae, and is thus presumed to have an olfactory function. In contrast, placoid or other olfactory sensilla have not been found in Nepomorpha (Cobben, 1978;Brożek, 2008Brożek, , 2013 and in species of Pentatomidae and Miridae (Avé et al, 1978;Hatfield & Frazier, 1980;Rani & Madhavenda, 1995).…”

Section: Morphological Characteristics and Presumed Function Of The Lmentioning

confidence: 99%

“…There are only sensory structures on the tips of the lateral lobes (Cobben, 1978;Hatfield & Frazier, 1980).…”

Section: Introductionmentioning

confidence: 99%

A comparison of the external morphology and functions of labial tip sensilla in semiaquatic bugs (Hemiptera: Heteroptera: Gerromorpha)

Brożek¹,

Zettel²

2014

Eur. J. Entomol.

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Abstract. The present study provides new data on the morphology and distribution of the labial tip sensilla of 41 species of 20 gerromorphan (sub)families (Heteroptera: Gerromorpha) obtained using a scanning electron microscope. There are eleven morphologically distinct types of sensilla on the tip of the labium: four types of basiconic uniporous sensilla, two types of plate sensilla, one type of peg uniporous sensilla, peg-in-pit sensilla, dome-shaped sensilla, placoid multiporous sensilla and elongated placoid multiporous subapical sensilla. Based on their external structure, it is likely that these sensilla are thermo-hygrosensitive, chemosensitive and mechanochemosensitive. There are three different designs of sensilla in the Gerromorpha: the basic design occurs in Mesoveliidae and Hebridae; the intermediate one is typical of Hydrometridae and Hermatobatidae, and the most specialized design in Macroveliidae, Veliidae and Gerridae. No new synapomorphies for Gerromorpha were identified in terms of the labial tip sensilla, multi-peg structures and shape of the labial tip, but eleven new diagnostic characters are recorded for clades currently recognized in this infraorder. One synapomorphy is recorded for Hydrometridae + Hermatobatidae + Macroveliidae + Veliidae + Gerridae; five for Macroveliidae + Veliidae + Gerridae; one for Veliidae + Gerridae; and one for Gerridae alone. Within Gerridae, one possible autapomorphy is recorded for Trepobatinae, and two possible autapomorphies for Rhagadotarsinae. We also record a possible autapomorphy for Cylindrostethinae, which indicates that this taxon is monophyletic, as is indicated by other morphological characters. Finally, we record one putative diagnostic character for Macroveliidae + Veliidae, two families that are otherwise not considered sister groups. This new set of characters based on features of the mouthparts of gerromorphan bugs might provide new insights into the cladogenesis of the infraorder.

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Ultrastructure of the labial tip sensilla of the tarnished plant bug, Lygus lineolaris (P. de Beauvois) (Hemiptera : Miridae)

Cited by 31 publications

References 6 publications

Comparative Analysis and Systematic Mapping of the Labial Sensilla in the Nepomorpha (Heteroptera: Insecta)

Comparative Analysis and Systematic Mapping of the Labial Sensilla in the Nepomorpha (Heteroptera: Insecta)

Prey selection byDicyphus hesperusof infected or parasitized greenhouse whitefly

A comparison of the external morphology and functions of labial tip sensilla in semiaquatic bugs (Hemiptera: Heteroptera: Gerromorpha)

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