Ambrysus lunatus
This record describes Ambrysus lunatus (species). Recorded family: Naucoridae. Recorded order: Hemiptera.
Identification and Appearance

Usinger (1946) states: This species is quite distinct from any species known to me. Color pattern distinct, the coria each with a conspicuous anteriorly divergent vitta from middle of anterior margin. (Usinger, 1946) In the series of paratypes, the Ft. Stockton series in particular is very much paler than the others. In some cases a submarginal pale area extends posteriorly from the apical margin of the embolium, adding to the distinctive coloration of this species. Also the brown discal spot of scutellum may be divided longitudinally at middle. (Usinger, 1946) Type Locality: Tom Greene county, Texas, July 15, 1928, R. H. Beamer collector
Wikipedia reference for Ambrysus lunatus: https://en.wikipedia.org/wiki/Ambrysus_lunatus.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
- Suborder
- Heteroptera
- Family
- Naucoridae (Creeping Water Bugs)
- Genus
- Ambrysus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
NM to Brazos R., TX / Mex. - Map
Additional species information
Species notes from the sources
Etymology: Ambrysus lunatus Usinger 1946
About True Bugs, Cicadas, Hoppers, Aphids and Allies: the wider group
Order-level background for Hemiptera, the group containing Ambrysus lunatus. 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 Ambrysus lunatus (3)
Photo credits: Contributed by Mike Quinn
Frequently Asked Questions About Ambrysus lunatus
What is Ambrysus lunatus?
Ambrysus lunatus is a species in the family Naucoridae, within the order Hemiptera.
How big is Ambrysus lunatus?
| Feature | Details |
|---|---|
| Size | Male |
| Length | 10.8 mm Female |
| Length | 12 mm (Usinger, 1946) |
How do you identify Ambrysus lunatus?
Usinger (1946) states: This species is quite distinct from any species known to me. Color pattern distinct, the coria each with a conspicuous anteriorly divergent vitta from middle of anterior margin. (Usinger, 1946) In the series of paratypes, the Ft. Stockton series in particular is very much paler than the others. In some cases a submarginal pale area extends posteriorly from the apical margin of the embolium, adding to the distinctive coloration of this species. Also the brown discal spot of scutellum may be divided longitudinally at middle. (Usinger, 1946)
Where is Ambrysus lunatus found?
Range: NM to Brazos R., TX / Mex. - Map
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