Observations on the metathoracic scent gland system of the backswimmer, Notonecta glauca L. (Heteroptera: Notonectidae)

2009 ◽  
Vol 48 (2) ◽  
pp. 223-227
Author(s):  
B.W. STADDON ◽  
M.J. THORNE
Keyword(s):  
Scent Gland ◽  
Metathoracic Scent Gland ◽  
Gland System

The Scent Glands and Their Chemicals in the Aposematic Cotton Harlequin Bug, Tectocoris-Diophthalmus (Heteroptera, Scutelleridae)

1987 ◽  
Vol 35 (3) ◽  
pp. 227 ◽  
Author(s):  
BW Staddon ◽  
MJ Thorne ◽  
DW Knight
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Investigation ◽  
Gas Chromatography Mass Spectrometry ◽  
Scent Glands ◽  
Scent Gland ◽  
Metathoracic Scent Gland ◽  
Developmental Fate ◽  
Dorsal Gland ◽  
Gland System

In describing differences in morphology, developmental fate and secretion composition in the scent glands of the cotton harlequin bug Tectocoris diophthalmus we have sought to extend comparative knowledge of the scent gland system in the pentatomoid families within the Hemiptera-Heteroptera. Chemical investigation of the secretions was undertaken by coupled gas chromatography-mass spectrometry (GC-MS). The following volatiles were detected: 2-hexenal, 2-hexenyl acetate and 2- octenyl acetate from the metathoracic scent gland (an adult gland); nonanal from the abdominal dorsal first gland (the divided dorsal gland) in the adults; 2-hexenal, 2-octenal, 4-oxohex-2-enal, dodecane and tridecane from the abdominal dorsal second and third glands (the undivided dorsal glands) in fifth-instar nymphs. Secretory units are sparse, opener muscles absent, and secretion scarcely, if at all, present in the second and third dorsal abdominal scent glands in the adults. T. diophthalmus is an addition to the small but growing list of pentatomoids in which biochemical divergence of the abdominal dorsal first gland from the abdominal dorsal second and third glands has been reported. The metathoracic scent gland in T. diophthalmus is comparatively small, as it is in many other aposematic species within the Hemiptera-Heteroptera.

Antennal and Behavioral Responses of Lygus lineolaris (Palisot de Beauvois) (Heteroptera: Miridae) to Metathoracic Scent Gland Compounds

2007 ◽  
Vol 42 (1) ◽  
pp. 92-104 ◽  
Author(s):  
Qing-He Zhang ◽  
Kamlesh R. Chauhan ◽  
Aijun Zhang ◽  
Gordon L. Snodgrass ◽  
Joseph C. Dickens ◽  
...  
Keyword(s):  
Field Experiments ◽  
Virgin Female ◽  
Behavioral Activity ◽  
Lygus Lineolaris ◽  
Scent Gland ◽  
Tarnished Plant Bug ◽  
Hexyl Butyrate ◽  
Metathoracic Scent Gland ◽  
Negative Effect ◽  
Number Of Males

Hexyl and (E)-2-hexenyl butyrates and (E)-4-oxo-2-hexenal are major components of the metathoracic scent gland (MSG) secretion and aeration samples of many plant bugs (Miridae), including the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois). Laboratory and field experiments were performed (1) to determine the extent to which MSG-produced compounds are detected by antennae of L. lineolaris males and females, and (2) to elucidate the behavioral activity associated with the antennally active MSG compounds. The three major MSG-produced compounds elicited strong antennal responses by both sexes. In Y-track olfactometer tests, attraction of males to virgin females was significantly reduced when a dispenser loaded with hexyl butyrate was placed with the virgin females. Hexyl butyrate tested alone against a blank control significantly repelled males. In the field, ternary and partial binary combinations of these three EAD-active compounds failed to attract either sex, whereas virgin females attracted a significant number of males. However, addition of hexyl butyrate and/or (E)-2-hexenyl butyrate to virgin female-baited traps significantly reduced the number of males caught compared with the level of the blank control traps. This might be due either to a negative effect on pheromone release by the females or direct repellency of males, or both. These MSG compounds may be useful for mating disruption and other pest management tactics against economically important plant bugs.

The genus Plinthisus Stephens in the Australian Region (Hemiptera: Lygaeidae)

1977 ◽  
Vol 8 (2) ◽  
pp. 109-152 ◽  
Author(s):  
James A. Slater ◽  
Merrill H. Sweet
Keyword(s):  
New Species ◽  
New Zealand ◽  
Host Plant ◽  
South American ◽  
Key To Species ◽  
Scent Gland ◽  
Australian Region ◽  
Metathoracic Scent Gland ◽  
Ecological Habitats ◽  
Host Plant Relationships

AbstractFifteen species of Plinthisus are reported from Australia, all of them previously undescribed. The new species are: P. woodwardi, P. australiensis, P. tasmaniensis, P. kangarooensis, P. acrocephalus, P. nudus, P. sericeus, P. platycephalus, P. mullewa, P. dampieris, P. reticulatus, P. tindalís, P. flíndersi, P. bassianus and P. grossi. P. woodwardi is also reported from New Zealand. The species are segregated into five groups. Their distributions within Australia and relationships to Oriental, African and South American taxa are discussed. A key to species is included. Plinthisus tineoides (Distant), an Oriental species, is redescribed and Locutius atratus Distant, 1918 and Locutius pallescens Distant, 1918 placed as junior synonyms. The ecological habitats and host plant relationships of P. australiensis, P. nudus, P. bassianus and P. grossi are discussed. Descriptions of nymphs are given for P. woodwardi, P. australiensis and P. grossi. Sixty figures are included illustrating dorsal views, spermatheca, metathoracic scent gland areas, eggs, wings, aedeagus, sperm reservoirs, parameres and abdominal details.

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