Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

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

National Moth Week was July 23-31, 2022! See moth submissions.

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

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Species Zelus luridus

Assassin Bug - Zelus luridus Assassin Bug Nymph with Male Midge Prey - Zelus luridus Insect on web - Zelus luridus sundew assassin bug nymph - Zelus luridus Assassin bug nymph - Zelus luridus Pennsylvania Assassin - Zelus luridus Assassin bug? - Zelus luridus Zelus sp. - Zelus luridus
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 Cimicomorpha
Family Reduviidae (Assassin Bugs)
Subfamily Harpactorinae
Tribe Harpactorini
Genus Zelus
Species luridus (Zelus luridus)
Synonyms and other taxonomic changes
erroneously treated under the name Z. exsanguis in(1)
Explanation of Names
Zelus luridus Stål 1862
luridus 'sallow, ghastly'
12.4-18 mm(2)

The base color of Z. luridus is apple green, and markings on the back may be very dark or rather light. The legs sometimes have dark or red bands on the distal ends of the femurs, but these can often be so light as to be almost invisible. When I've seen mating pairs, the males tend to be the darker ones, with the more pronounced red leg bands. The best feature for recognition is the pair of delicate spines on the rear corners of the pronotum, which are rather long on the light colored individuals and shorter on the dark. (3)
e NA to Rockies (QC-FL to MB-WY-se.AZ); Mexico(2)
Life Cycle
1. Eggs. 2. Newly hatched nymphs. 3. First instar nymphs. 4. Older nymph. 5. Adult

The final molt to adult (photo series):
The most common Zelus in the east
Works Cited
1.How to Know the True Bugs
Slater, James A., and Baranowski, Richard M. 1978. Wm. C. Brown Company.
2.Genus Zelus Fabricius in the United States, Canada, and Northern Mexico (Hemiptera: Reduviidae)
Hart E.R. 1986. Ann. Ent. Soc. Am. 79: 535-548.
3.Austin bug collection