Texas Beetle Information

Return to Texas Entomology - Compiled by Mike Quinn

Thin-lined Passionvine Beetle

Disonycha stenosticha Schaeffer 1931

Family Chrysomelidae, Subfamily Galerucinae, Tribe Alticini


Bentsen-RGV State Park
Mission, Hidalgo County, Texas 
July 12, 2008 (Jan Dauphin)


Sabal Palm Audubon Center
Brownsville, Cameron County, Texas 
October 13-14, 1988 (E. G. Riley)

Specimen curated in the TAMUIC


Most records from the Brownsville/Palm Grove area of Cameron Co., Texas except the following:

Texas, Cameron Co., Los Fresnos, VI-13-1969, Board & Hafernik
Texas, Hidalgo Co., Mission, July 12, 2008, J. Dauphin & M. B Stowe
Texas, San Patricio Co., Lake Corpus Christi State Park, VI-17-1969, Robert L. Heitzman
Mexico, Tamaulipas, 7 km SSE Gomez Farias, Bocatoma, V-27-28-1978, E. G. Riley

Type Locality:

Charles Schaeffer collected the type specimen in "Brownsville," Cameron Co., Texas on January 17, 1923. (Schaeffer 1931) This specimen is at the Smithsonian.

Larval Hosts

Clark et al. (2004) report, "We have collected adults of this species, and larvae presumably belonging to this species, from Passiflora filipes Benth. (Passifloraceae) in southern Texas."

Richardson (1995) reports P. filipes from "Cameron [county] (the only Texas locality) and south. Palm groves, thickets. All seasons." Native Plant Project reports its native range as limited to resaca woodlands in southern Cameron County. Likewise, the USDA PLANTS Database shows the U.S. range of Passiflora filipes Benth. - Slender Passionflower as limited to Cameron County.

Similar Species

Disonycha is comprised of 145 described species and is restricted to the New World. (Arnett et al. 2002)
    There are 36 species of Disonycha recognized north of Mexico. (Arnett et al. 2002)
        Twenty-one species occur in Texas (Riley et al. 2003)

Etymology: Disonycha stenosticha Schaeffer 

dis (G). Separate, apart; double, two
nyc, -t, -ti, -to (G). Night
sten, -o (G). Narrow
stict, -o (G). Punctured, dappled 

Biography: Charles Frederick August Schaeffer (1860-1934)

Burke, H.R. 2004. Notable Weevil Specialists of the Past. Curculio, 49: 5-7.

"His favorite collecting site in the Lower Rio Grande Valley was the Esperanza Ranch located a few miles east of Brownsville, TX. Many species of Coleoptera, as well as members of other orders, have the Esperanza Ranch site as their type locality. Unfortunately, this entomologically important site of original dense shrubs and woods along the Resaca de la Palma has succumbed to urbanization and exists no more as a viable biological entity."


Arnett, R.H., Jr., M.C. Thomas, P.E. Skelley & J.H. Frank. (editors). 2002. American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea. CRC Press LLC, Boca Raton, FL. xiv + 861 pp.

Blake, D.H. 1933. Revision of the Beetles of the Genus Disonycha Occurring in America North of Mexico . Proc. USNM, 82 Art. 28: 1-66.

Blake, D.H. [1955]1957. Revision of the vittate species of the chrysomelid beetle genus Disonycha from the Americas south of the United States. Proceedings of the United States National Museum 104(3338): 1-86.

Borror, D.J. 1960. Dictionary of Word Roots and Combining Forms. National Press Books, Palo Alto. v + 134 pp.

Burke, H.R. 2004. Notable Weevil Specialists of the Past. Curculio, 49: 5-7.

Clark, S.M., D.G. LeDoux, T.N. Seeno, E.G. Riley, A.J. Gilbert & J.M. Sullivan. 2004. Host plants of leaf beetle species occurring in the United States and Canada (Coleoptera: Megalopodidae, Orsodacnidae, Chrysomelidae exclusive of Bruchinae). Coleopterists Society, Special Publication no. 2. 476 pp.

Davis, W.T. 1942. In memory of Charles Schaeffer. Compiled from memoranda found among the papers of the late Charles W. Leng. Journal of the New York Entomological Society, 50: 209-210.

Osborn, H. 1946. Charles F. A. Schaeffer (1960-1934) Pp. 109-110. In: Fragments of Entomological History, Part II (privately published). Columbus, Ohio.

Richardson, A. 1995. Plants of the Rio Grande Delta. [revised edition of "Plants of Southmost. Texas"]. University of Texas Press, Austin. x + 332 pp., 224 color photos.

Riley, E.G., S.M. Clark, & T.N. Seeno. 2003. Catalog of the leaf beetles of America north of Mexico (Coleoptera: Megalopodidae, Orsodacnidae and Chrysomelidae, excluding Bruchinae). Coleopterists Society, Special Publication no. 1. 290 pp.

Schaeffer, C. 1931. New species of Disonycha and notes (Coleoptera: Chrysomelidae). Journal of the New York Entomological Society 39: 279-285.

Tropicos.org. Missouri Botanical Garden. 21 Aug 2008 <http://www.tropicos.org/Name/24200159>.

08 Dec 2008   Mike Quinn / Texas Entomology / Texas Beetle Information