Species Trigonoscutoides texanus

Classification · Other Common Names · Explanation of Names · Numbers · Range · Habitat · Season · Food · Remarks · See Also · Print References · Works Cited

Trigonoscutoides texanus O'Brien - Trigonoscutoides texanus

Classification

Kingdom Animalia (Animals)

Phylum Arthropoda (Arthropods)

Subphylum Hexapoda (Hexapods)

Class Insecta (Insects)

Order Coleoptera (Beetles)

Suborder Polyphaga

No Taxon (Series Cucujiformia)

Superfamily Curculionoidea

Family Curculionidae (Snout and Bark Beetles)

Subfamily Entiminae (Broad-nosed Weevils)

Tribe Tanymecini

Genus Trigonoscutoides

Species texanus (Trigonoscutoides texanus)

Other Common Names

Harvard Sand Oak Weevil

Explanation of Names

Trigonoscutoides texanus O'Brien, 1977

Numbers

montypic genus (1)

Range

Endemic to sand dune area near Monahans in Ward County, TX - Map (O'Brien 1977)(2)

Habitat

O'Brien (1977) collected a long series at several localities by sifting sand under shin oak (Quercus sp.). Weevils were 3" to 12" below the surface only in areas were shin oak grew. Weevils also collected at night walking on sand surface and feeding on the shin oak (O'Brien 1977)

Season

Mar-July (3), frequent collecting trips in the summer, fall, and winter were all unsuccessful. (O'Brien 1977)

Food

adults coll'ed on and under Harvard oak (Quercus havardii) (1)

Remarks

Texas consideres this to be a SGCN (4)

See Also

O'Brien (1977) compared the adults with Trigonoscuta and Miloderoides. The adult characters shared by Trigonoscutoides and Trigonoscuta are probably due to convergence, since the members of both genera burrow in sand. The new genus has numerous characters that distinguish it from Trignoscuta, indicating at most a distant relationship.

Print References

O'Brien, C.W. 1977. Trigonoscutoides texanus (New Genus, New Species) from Texas Sand Dunes (Tanymecinae: Curculionidae: Coleoptera). The Coleopterists Bulletin 31(2): 155-158. (JSTOR)

Works Cited

1.	American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.

2.	Global Biodiversity Information Facility (GBIF)

3.	Surveys and habitat assessment of endemic insects at the Monahans Dune System, Final report prepared for the TPWD. Longing, S., S. Discua and J. Cokendolpher. 2014. Texas Tech University, Lubbock. 38 pp.

4.	Texas "Species of Greatest Conservation Need" (SGCN) - TPWD

Contributed by Mike Quinn on 23 October, 2009 - 9:11am
Last updated 2 February, 2024 - 3:03pm

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