Giant Strong-nosed Stink Bug
Alcaeorrhynchus grandis
This record describes Alcaeorrhynchus grandis (species). Recorded family: Pentatomidae. Recorded order: Hemiptera.
Identification and Appearance

Large, flat, speckled brown, with a short stabbing beak; can be distinguished from Podisus by larger size (>15 mm; Podisus adults reach only 14 mm) and by the double-pointed humeral spines. Instars III‒V are blue-black with red keels on the pronotum; instar V also has reddish bars.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
- Suborder
- Heteroptera
- Superfamily
- Pentatomoidea
- Family
- Pentatomidae (Stink Bugs)
- Subfamily
- Asopinae
- Genus
- Alcaeorrhynchus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
on soybean, eggplant, and shrubs near streams & marshes ( 4 )
Geographic Range
se US (NC‒FL‒TX) to Argentina
Additional species information
Species notes from the sources
Etymology: Alcaeorrhynchus grandis (Dallas 1851)
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Alcaeorrhynchus grandis. Species-specific details appear above.
Group overview
Hemiptera (true bugs) includes over 80,000 described species across cicadas, aphids, leafhoppers, shield bugs, and bed bugs. Aphids alone cost global agriculture an estimated $2.5 billion annually in crop losses.
Ecological role of the group
Many Hemiptera are essential food sources for birds and predatory insects. Cicadas provide massive nutrient pulses during emergence events - a single Brood X emergence can involve trillions of individuals across 15 states.
Economic and practical significance of the group
The brown marmorated stink bug (Halyomorpha halys) caused $37 million in apple crop losses in a single year in the U.S. Mid-Atlantic region. Bed bug infestations in the U.S. increased by 500% between 2001-2010, costing the hotel industry hundreds of millions annually.
Recorded sources for this group: USDA, EPA, University research. Imported estimates may describe particular regions or reporting periods.
Photos of Giant Strong-nosed Stink Bug (5)
Photo credits: Contributed by Hannah Nendick-Mason; Additional contributions by Chuck Entz , Andrew Meeds , Mike Quinn , v belov
Frequently Asked Questions About Giant Strong-nosed Stink Bug
What is Giant Strong-nosed Stink Bug?
Giant Strong-nosed Stink Bug (Alcaeorrhynchus grandis) is a species in the family Pentatomidae, within the order Hemiptera.
How big is Giant Strong-nosed Stink Bug?
♂ 16‒21 mm, ♀ 18‒25 mm
How do you identify Giant Strong-nosed Stink Bug?
Large, flat, speckled brown, with a short stabbing beak; can be distinguished from Podisus by larger size (>15 mm; Podisus adults reach only 14 mm) and by the double-pointed humeral spines. Instars III‒V are blue-black with red keels on the pronotum; instar V also has reddish bars.
Where is Giant Strong-nosed Stink Bug found?
| Feature | Details |
|---|---|
| Habitat | on soybean, eggplant, and shrubs near streams & marshes ( 4 ) |
| Range | se US (NC‒FL‒TX) to Argentina |
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