The Metathoracic Scent Gland of the Leaf-Footed Bug, Leptoglossus zonatus
نویسندگان
چکیده
The metathoracic scent gland of 25-day-old adults of both sexes of the leaf-footed bug, Leptoglossus zonatus (Dallas) (Heteroptera: Coreidae), are described based on optical microscopy analysis. No sexual dimorphism was observed in the glandular composition of this species. The gland is located in the anteroventral corner of the metathoracic pleura between the middle and posterior coxal pits. The opening to the outside of the gland is very wide and permanently open as it lacks a protective membrane. In the internal part, there is a pair of metathoracic glands that consist of piles of intertwined and occasionally bifurcated cellular tubes or columns. These glands discharge their pheromonal contents into the reservoir through a narrow cuticular tube. The reservoir connects with the vestibule via two opposite and assembled cuticular folds that can separate muscularly in order to allow the flow of liquid away from the insect. The external part consists of an ostiole from which the pheromone is emitted. The ostiole is surrounded by a peritreme, a structure that aids optimum pheromone dispersion. The described gland is of the omphalien type.
منابع مشابه
Evaluation of damage to satsuma mandarin (Citrus unshiu) by the leaffooted bug, Leptoglossus zonatus (Hemiptera: Coreidae)
Satsuma mandarin, Citrus unshiu Marcovitch, has been grown for over a century in the Gulf Coast region of the United States (English and Turnipseed 1940). However, the last decade has recorded a major increase in the production of this crop in southern Alabama, fuelled by improved production and tree protection methods and strong industry and state support (Campbell et al. 2004). Studies have i...
متن کاملOn the Suggestion That the Secretion from the Metathoracic Scent Glands of a Surface-dwelling Aquatic Insect, Gerris Najas (de Geer), (heteroptera; Gerridae) Has a Waterproofing Function
The ventral surface of the pond skater, Gerris najas, is covered with a hair pile extremely resistant to water penetration. It is possible that the hydrofuge properties of the hair pile are maintained by an oil released from glands opening out on to the general body surface. Holdgate (1955) has reported findings indicating that many surface-dwelling and surface-breathing aquatic insects activel...
متن کاملA REVISION OF THE TRIBE AELIINI (HEMIPTERA: PENTATOMIDAE: PENTATOMINAE) FROM THE INDO-PAKISTAN REGION
Five genera and ten species of the tribe Aeliini Still from the Indo-Pakistan region are keyed, compared to their closest allies and their geographical distribution given. A description of all the above genera and species of Adria St?l and Bonacialus Distant has been given. These species, including two new species of Adria, are described with special reference to their metathoracic scent ...
متن کاملHost preference and development of Leptoglossus zonatus (Hemiptera: Coreidae) on satsuma mandarin.
Leptoglossus zonatus (Dallas) (Hemiptera: Coreidae) has recently emerged as a key pest of satsuma mandarin, Citrus unshiu Marcovitch, and other fruit crops in the Gulf Coast region of the United States. Studies were conducted under laboratory conditions (25 +/- 2 degrees C, 50 +/- 10% RH, and a photoperiod of 14:10 [L:D] h) to investigate host preference and suitability of satsuma fruit as host...
متن کاملA new genus and species of Micropterous Blissidae (Hemiptera: Heteroptera: Lygaeoidea) from Ecuador.
The new genus Barrerablissus and the new species B. strigosus are described from Napo Province, Ecuador. A key to the known genera of the Western Hemisphere Blissidae with apterous or micropterous condition is included. Dorsal and ventral view and digital photographs of head, pronotum, scutellum, metathoracic scent gland auricle and male genital capsule are added.
متن کامل