Sphaenothecus trilineatus
This record describes Sphaenothecus trilineatus (species). Recorded family: Cerambycidae. Recorded order: Coleoptera.
Identification and Appearance

This species was not recognized as part of the United States longhorn beetle fauna until reported from Brownsville by Chemsak and Noguera. They mention the single Texas record in a paragraph discussion but not in the Material Examined section of their paper. The specimen that is the basis for the record is present in the Essig Museum of Entomology (University of California–Berkeley) (C. B. Barr, pers. comm. to Riley & King, 2009). A second specimen labeled as being from Texas was seen during the preparation of this report (USNM collection). It is labeled Port la Vaca, at Brownsville, II-7-1968, J. B. Kee. Since there is no such location as Port la Vaca at Brownsville, but there is a Port Lavaca, Texas (Calhoun County), one can speculate that this specimen was perhaps intercepted in commerce and not collected in the field. This view is supported by the fact that the USNM Collection includes a great amount of insect material that was submitted by inspectors to the United States Department of Agriculture taxonomic service unit for identification. It seems highly unlikely that this specimen originated in Port Lavaca, Texas and was later intercepted at Brownsville, Texas. Texas initially considered this a SGCN, but it has been removed from the current list.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Chrysomeloidea
- Family
- Cerambycidae (Longhorn Beetles)
- Subfamily
- Cerambycinae
- Tribe
- Trachyderini
- Genus
- Sphaenothecus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
In w. Mexico, adults are common on flowers during the fall (J.E. Wappes, pers. comm. to Riley & King, 2009)
Geographic Range
southmost TX (Brownsville area, per single spmn coll'ed 1925 ) to Guatemala and Honduras - Map
Seasonal Activity
June (based on 1925 spmn)
Diet and Behavior
Diet: Host unknown
Additional species information
Species notes from the sources
Etymology: Sphaenothecus trilineatus Dupont 1838
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Sphaenothecus trilineatus. Species-specific details appear above.
Group overview
Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.
Ecological role of the group
Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.
Economic and practical significance of the group
Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.
Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.
Photos of Sphaenothecus trilineatus (2)
Photo credits: Contributed by Mike Quinn; Additional contributions by v belov
Frequently Asked Questions About Sphaenothecus trilineatus
What is Sphaenothecus trilineatus?
Sphaenothecus trilineatus is a species in the family Cerambycidae, within the order Coleoptera.
How big is Sphaenothecus trilineatus?
16-25 mm
Where is Sphaenothecus trilineatus found?
| Feature | Details |
|---|---|
| Habitat | In w. Mexico, adults are common on flowers during the fall (J.E. Wappes, pers. comm. to Riley & King, 2009) |
| Range | southmost TX (Brownsville area, per single spmn coll'ed 1925 ) to Guatemala and Honduras - Map |
What does Sphaenothecus trilineatus eat?
The diet of the Sphaenothecus trilineatus includes Host unknown.
When is Sphaenothecus trilineatus active?
Sphaenothecus trilineatus: seasonal activity - June (based on 1925 spmn).
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