Texas Walkingstick Information

Return to Texas Entomology - Compiled by Mike Quinn

Order Phasmida - Four North American Families (north of Mexico)

Earlier taxonomy lumped all the above families under Phasmatidae, Suborder Phasmatodea, Order Orthoptera. 

Worldwide there are 2500 to 3000 stick species, most are of tropical distribution.

Texas Taxa:

Family Heteronemiidae
        Diapheromera arizonensis        Arizona Walkingstick
        Diapheromera covillea             Coville's Walkingstick
        Diapheromera tamaulipensis    Tamaulipas Walkingstick
        Diapheromera femorata           Common or Northern Walkingstick
        Diapheromera persimilis          Similar Walkingstick
        Diapheromera tamaulipensis   Tamaulipas Walkingstick
        Diapheromera torquata           Twisted Walkingstick
        Diapheromera velii                   Prairie Walkingstick
        Megaphasma denticrus            Giant Walkingstick
        Parabacillus coloradus            Colorado Short-horned Walkingstick
        Parabacillus hesperus              Western Short-horned Walkingstick
        Pseudosermyle straminea
        Pseudosermyle strigata
        Sermyle mexicana  

Family Pseudophasmatidae 
        Anisomorpha buprestoides    Southern Two-striped Walkingstick, or "Spitting Devil"
        Anisomorpha ferruginea       Northern Two-striped Walkingstick, or "Prairie Alligator"

Source: Arment, 2005. Note, Texas Walkingstick diversity second only to that of California.

HOAX Email?

Back in 2003 there was email circulating about a Walkingstick that caused temporary blindness to the owner's pet dog, "Megan". This email had the air of an urban legend, i.e. no names, dates or specific locations are given. 

I received different versions of this email with the subject: "FW: Safety Notice - Nasty Bug", four times in August of 2003. (Later versions were titled: "FW: Safety Notice - Nasty Walkingstick Bug".)

Some versions of the email had added text suggesting that a nameless entomologist at Texas A&M identified the insect. Other versions included an incident with a Walkingstick in a Florida nursery.

The text suggested either Anisomorpha buprestoides or Anisomorpha monstrosa induced temporary blindness. 

Please note that A. monstrosa is a Central American species and has not been documented along the Gulf Coast as the email suggests.

The two of the attached photos (including the one labeled "nasty walking stick1.jpg") circulating with this email are the same images as the first two stick photos posted HERE. The image of the thin walkingstick on the branch is also posted (and correctly identified)  HERE 

Despite the email's misidentified photos and the lack of specifics, the following two native U.S. species are in fact of some medical importance:

Family Pseudophasmatidae - Striped Walkingsticks

	Anisomorpha buprestoides	Southern Two-striped Walkingstick	39-77 mm.	E. Texas to Florida to s.e. Georgia
	Anisomorpha ferruginea	Northern Two-striped Walkingstick	30-36 mm.	E. Texas to Florida to Virginia to Illinois

EA Paysse MD, et al. 2001. Ocular Injury from the Venom of the Southern Walkingstick. Ophthalmology 108: 190-191.

Durden, C. 1999. Learn About ...Texas Insects. Texas Parks & Wildlife Press, Austin. 60 pp.

Anisomorpha ferruginea - The 'Prairie Alligator' "may be found walking on trees and on the sides of houses in fall and winter. Mating pairs of large females and tiny males may stay coupled for several days. When disturbed, they spray an acrid fluid from glands behind the head. Be careful, they aim for the eyes." 

Also, see other references that discuss the medical importance of walkingsticks.

Husbandry 

Stick-insects - Care Sheet - Amateur Entomologists - UK

Longest

One Texas species, the Giant Walkingstick (Megaphasma dentricus) grows to almost 7 inches long, the longest insect in the United States!

Defoliation?

Family Heteronemiidae - Common Walkingsticks

Diapheromera femorata

Common Walkingstick

68-101 mm.

Maine and southern Canada to Florida and Arizona

This is the only U.S. species that occasionally becomes abundant enough to damage plants.

"Sometimes occurs in tremendous numbers, defoliating oaks and other trees and shrubs. Usually abundant only every other year in a given locality. In a heavy infestation eggs and fecal pellets are dropped to the ground in great numbers, producing a pattering sound, like rain, accompanied by a peculiar seething sound of thousands of jaws chewing the leaves." (Helfer, 1953)

Stick Insect Bibliography with an emphasis on their medical aspects:

Albert, R.O. 1947. Another case of injury to the human eye by the Walking Stick, Anisomorpha (Phasmidae). Entomological News 58(3):57-59.

Bedford, G.O. 1978. Biology and ecology of the Phasmatodea. Annual Review of Entomology 23:125-49.

Blatchley, W.S. 1920. Orthoptera of northeastern North America. Nature Publishing Company, Indianapolis.

Bradley, J.C., and B.S. Galil. 1977. The taxonomic arrangement of the Phasmatodea with keys to the subfamilies and tribes. Proceeding of the Entomolgical Society of Washington 79(2):176-208.

Caudell, A.N. 1903. The Phasmidae, walking sticks of the United States. Proceedings of the U.S. National Museum 26:863-886.

Chow, Y.S. & Y.M. Lin. 1986. Actinidine, a defensive secretion of the stick insect, Megacrania alpheus Westwood (Orthoptera: Phasmatidae). Journal of Entomological Science 21:97-101.

Davidson, B.S., T. Eisner, & J. Meinwald. 1991. 3,4 Didehydro-â,â,-caroten-2-one, a new carotinoid from the eggs of a stick insect Anisomorpha buperestoides. Tetrahedron Letters 32:5651-5654.

Dziezye, J. 1992. Insect defensive spray-induced keratitis in a dog. Journal of the American Veterinary Medical Association 200:1969.

Durden, C. 1999. Learn About ...Texas Insects. Texas Parks & Wildlife Press, Austin. 60 pp.

Eisner, T. 1965. Defensive spray of a phasmid insect. Science 148:966-968.

Eisner, T., R.C. Morgan, A.B. Attygalle, S.R. Smedley, K.B. Herath, J. Meinwald. 1997. Defensive Production of Quinoline by a Phasmid Insect (Oreophoetes peruana).  Journal of Experimental Biology 200(19):2493-2500.

Giese, R.L. & Knauer, K.H. 1977. Ecology of the walkingstick. Forestry Science 23:45-63.

Hatch, R.L., S.D. Lamsens, J.E. Perchalski. 1993. Chemical conjunctivitis caused by spray of A. buprestoides Two-striped walkingstick. Journal of the Florida Medical Association 80:758-759.

Hebard, M. 1943. The Dermaptera, and Orthopterous families Blattidae, Mantidae, and Phasmidae of Texas. Transactions of the American Entomological Society 68:239-310.

Helfer, J.R. 1953. How to know the grasshoppers, cockroaches, and their allies. William C. Brown Co. Publishers, Dubuque, IA. 353 pp.

Hetrick, L. A. 1949. Field notes on a color variant of the two-striped walkingstick, Anisomorpha buprestoides (Stoll). Florida Entomologist 32(2):74-77.

Hetrick L.A. 1949. The oviposition of the two-striped walking-stick, Anisomorpha buprestoides (Stoll). Proceedings of the Entomological Society of Washington 51:103-104.

Littig, K.S. 1942. External Anatomy of the Florida Walking Stick Anisomorpha buprestoides Stoll. The Florida Entomologist 25(3):33-41.

Meinwald, J., Chadha, M.S., Hurst, J.J. & Eisner, T. 1962. Defense mechanisms of arthropods. IX. Anisomorphal, the secretion of a phasmid insect. Tetrahedron Letters 1:29-33.

Moxey, C.F. 1971. Notes on the Phasmatodea of the West Indies: two new genera. Psyche 78(1/2):67-83.

Moxey, C.F. 1972. The stick-insects (Phasmatodea) of the West Indies: Their systematics and biology. Unpublished thesis, Harvard University, Cambridge, Massachusetts.  211 pp

Patrock R.W. 1988. Provisional Checklist of Phasmatodea (Phasmids, Mantids, and Cockroaches) of Brackenridge Field Laboratory.

Paysse, E.A., S. Holder & D.K. Coats. 2001. Ocular Injury from the Venom of the Southern Walkingstick. Ophthalmology 108:190-191. (Synopsis)

Thomas, M. C.  Sept/Oct 2001. The Twostriped Walkingstick, Anisomorpha buprestoides (Stoll) (Phasmatodea: Pseudophasmatidae). Florida Department of Agriculture & Consumer Services, Division of Plant Industry. Entomology Circular No. 408, pg 1-4.

Wilkins, O.P. & O.P. Breland. 1951. Notes on the giant walking stick, Megaphasma deticrus (Stål) (Orthoptera: Phasmatidae). Texas Journal of Science 3:305-310.

30 May 2008 © Mike Quinn / mike.quinn@tpwd.state.tx.us / Texas Entomology