Florida Entomologist (2014) 97, 277-280

Giulianne S. Calizotti and Antônio R. Panizzi (2014)
Behavior of first instar nymphs of Edessa meditabunda (F.) (Hemiptera: Pentatomidae) on the egg mass
Florida Entomologist 97 (1), 277-280
Abstract: Laboratory studies were conducted on the behavior and time budget of first instar nymphs of the brown-winged stink bug [Edessa meditabunda (F.) (Heteroptera: Pentatomidae)] from egg emergence to their final position adjacent to the egg shells (chorions). Results indicated that right after emergence the nymph stays on the top of each chorion for about 3 min; the mean number of chorions or eggs visited by each nymph was 7.8 before moving off the shells or eggs and positioning itself adjacent to them. The total time required for from emergence of each nymph to its final position adjacent to the chorions was ca. 25 min. All nymphs relocated from on top of the egg mass to a position in which they faced it. This behavior of moving on to the chorions or eggs and positioning adjacent to them is speculated to be related to possible acquisition of symbionts from the surfaces of the chorions and to the defense of the egg mass.
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Database assignments for author(s): Antônio R. Panizzi

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Edessa meditabunda	Soybean (Glycine max)	Brazil (south)
	Edessa meditabunda	Sunflower (Helianthus annuus)	Brazil (south)