ColeopteraCerambycidae – Longhorn Beetles

Sphaenothecus trilineatus

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

Identification and Appearance

Sphaenothecus trilineatus - Sphaenothecus trilineatus
Contributed by Mike Quinn; Additional contributions by v belov

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.

Explore Coleoptera families and species →

Photos of Sphaenothecus trilineatus (2)

Sphaenothecus trilineatus - photo 1
Contributed by Mike Quinn; Additional contributions by v belov
Sphaenothecus trilineatus - photo 2
Contributed by Mike Quinn; Additional contributions by v belov

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?
FeatureDetails
HabitatIn w. Mexico, adults are common on flowers during the fall (J.E. Wappes, pers. comm. to Riley & King, 2009)
Rangesouthmost 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).

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Mike Quinn; Additional contributions by v belov. Contributors retain copyright over their individual contributions.