HomeGuideID RequestRecentFrassForumsDonateHelp

Clickable Guide

Calendar

Upcoming Events

Registration is open for the 2024 BugGuide gathering in Idaho July 24-27

Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Previous events

TaxonomyBrowse

Info

ImagesLinksBooksData

Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » True Bugs, Cicadas, Hoppers, Aphids and Allies (Hemiptera) » True Bugs (Heteroptera) » Pentatomomorpha » Pentatomoidea » Stink Bugs (Pentatomidae) » Predatory Stink Bugs (Asopinae) » Alcaeorrhynchus » Giant Strong-nosed Stink Bug (Alcaeorrhynchus grandis)

Species Alcaeorrhynchus grandis - Giant Strong-nosed Stink Bug

Classification · Explanation of Names · Size · Identification · Range · Habitat · Food · See Also · Internet References · Works Cited

a predatory stink bug - Alcaeorrhynchus grandis

Alcaeorrhynchus grandis (Dallas) - Alcaeorrhynchus grandis

Large Podisus? - Alcaeorrhynchus grandis

Alcaeorrhynchus grandis nymph and adult ? - Alcaeorrhynchus grandis

Podisus sagitta? - Alcaeorrhynchus grandis

Alcaeorrhynchus grandis from Nebraska - Alcaeorrhynchus grandis

Classification

Kingdom Animalia (Animals)

Phylum Arthropoda (Arthropods)

Subphylum Hexapoda (Hexapods)

Class Insecta (Insects)

Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)

Suborder Heteroptera (True Bugs)

Infraorder Pentatomomorpha

Superfamily Pentatomoidea

Family Pentatomidae (Stink Bugs)

Subfamily Asopinae (Predatory Stink Bugs)

Genus Alcaeorrhynchus

Species grandis (Giant Strong-nosed Stink Bug)

Explanation of Names

Alcaeorrhynchus grandis (Dallas 1851)

Size

♂ 16‒21 mm, ♀ 18‒25 mm

Identification

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.(1)

Range

se US (NC‒FL‒TX) to Argentina(2)(3)

Habitat

on soybean, eggplant, and shrubs near streams & marshes(4)

Food

See Also

First instar is hard to distinguish from that of Euthyrhynchus floridanus: both have a blue-black head and thorax and red abdomen with dark central and lateral rows of dark-colored plates, but egg masses differ: in E. floridanus, it's loosely oval and contain 20‒90 eggs; in A. grandis, 100‒200 eggs in multiple rows.(1)

Internet References

Fact sheet (Richman & Mead 2014)(1)

Works Cited

1.	University of Florida: Featured Creatures

2.	Catalog of the Heteroptera, or True Bugs of Canada and the Continental United States Thomas J. Henry, Richard C. Froeschner. 1988. Brill Academic Publishers.

3.	The Pentatomidae, or stink bugs, of Kansas with a key to species (Hemiptera: Heteroptera) Packauskas R.J. 2012. Great Lakes Entomologist 45: 210-219.

4.	American Insects: A Handbook of the Insects of America North of Mexico Ross H. Arnett. 2000. CRC Press.

Contributed by Hannah Nendick-Mason on 7 October, 2005 - 7:31am
Additional contributions by Chuck Entz, Andrew Meeds, Mike Quinn, v belov
Last updated 5 December, 2023 - 11:37pm

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2024 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Printer Friendly Version