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Curious Oviposition Behavior in Phyllium westwoodii (Phasmatodea: Phylliidae): Preliminary Observations.

Arai M, Yago M - J. Insect Sci. (2015)

Bottom Line: We report that in a leaf insect, Phyllium westwoodii Wood-Mason (Phasmatodea: Phylliidae), two differing apertures can be used for oviposition, the color of eggs being affected by which aperture is used.Eggs which are forcibly propelled from the internal space within the valvulae of the abdomen are brown, whereas white eggs emerge slowly from the opening between the eighth sternite and the valvulae, and are deposited close to the ventral surface of the female.This unusual oviposition system does not appear to have been previously reported in phasmatids or in other insects.

View Article: PubMed Central - PubMed

Affiliation: Shirayuri Gakuen Junior High School, 2-4-1 Kudanshita, Chiyoda-ku, Tokyo 102-0073, Japan.

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Genitalia and ovipositor of the female (lateral view). (a) anterior valvula; (b) posterior valvula; (c) eighth sternite (subgenital plate); (d) opening of oviduct; (e) oviduct; (f) bursa copulatrix; (g) spermatheca; (h) accessory gland; (i) wide invagination (fertilization pocket sensu Kalusche [1972] shown in Matsuda [1976]); (j), gut (proctodaeum).
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iev111-F5: Genitalia and ovipositor of the female (lateral view). (a) anterior valvula; (b) posterior valvula; (c) eighth sternite (subgenital plate); (d) opening of oviduct; (e) oviduct; (f) bursa copulatrix; (g) spermatheca; (h) accessory gland; (i) wide invagination (fertilization pocket sensu Kalusche [1972] shown in Matsuda [1976]); (j), gut (proctodaeum).

Mentions: The anatomy of the female genitalia was further examined (Fig. 5). The oviduct opened just above the middle of the eighth sternite, behind which the white eggs were laid. The large bursa copulatrix, which functions as a reservoir for the spermatophore, was located above the oviduct, and opened above the aperture of the oviduct. A pair of the spermathecae was attached above the bursa near its opening. A pair of slender accessory glands also arose from beneath the bursa near its opening. However, no duct was present in the internal space within the valvulae where brown eggs emerged, although a wide membranous invagination existed there.Fig. 5.


Curious Oviposition Behavior in Phyllium westwoodii (Phasmatodea: Phylliidae): Preliminary Observations.

Arai M, Yago M - J. Insect Sci. (2015)

Genitalia and ovipositor of the female (lateral view). (a) anterior valvula; (b) posterior valvula; (c) eighth sternite (subgenital plate); (d) opening of oviduct; (e) oviduct; (f) bursa copulatrix; (g) spermatheca; (h) accessory gland; (i) wide invagination (fertilization pocket sensu Kalusche [1972] shown in Matsuda [1976]); (j), gut (proctodaeum).
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4664942&req=5

iev111-F5: Genitalia and ovipositor of the female (lateral view). (a) anterior valvula; (b) posterior valvula; (c) eighth sternite (subgenital plate); (d) opening of oviduct; (e) oviduct; (f) bursa copulatrix; (g) spermatheca; (h) accessory gland; (i) wide invagination (fertilization pocket sensu Kalusche [1972] shown in Matsuda [1976]); (j), gut (proctodaeum).
Mentions: The anatomy of the female genitalia was further examined (Fig. 5). The oviduct opened just above the middle of the eighth sternite, behind which the white eggs were laid. The large bursa copulatrix, which functions as a reservoir for the spermatophore, was located above the oviduct, and opened above the aperture of the oviduct. A pair of the spermathecae was attached above the bursa near its opening. A pair of slender accessory glands also arose from beneath the bursa near its opening. However, no duct was present in the internal space within the valvulae where brown eggs emerged, although a wide membranous invagination existed there.Fig. 5.

Bottom Line: We report that in a leaf insect, Phyllium westwoodii Wood-Mason (Phasmatodea: Phylliidae), two differing apertures can be used for oviposition, the color of eggs being affected by which aperture is used.Eggs which are forcibly propelled from the internal space within the valvulae of the abdomen are brown, whereas white eggs emerge slowly from the opening between the eighth sternite and the valvulae, and are deposited close to the ventral surface of the female.This unusual oviposition system does not appear to have been previously reported in phasmatids or in other insects.

View Article: PubMed Central - PubMed

Affiliation: Shirayuri Gakuen Junior High School, 2-4-1 Kudanshita, Chiyoda-ku, Tokyo 102-0073, Japan.

Show MeSH
Related in: MedlinePlus