The lace bug Leptoypha mutica, a specialist on trees and shrubs of the Oleaceae, feeds mainly on ash, Fraxinus spp., and fringetree, Chionanthus virginicus. In July 1987 and 1988, nymphs and adults were observed on late lilac, Syringa villosa, in a landscape planting in northwestern Pennsylvania. Infested leaves showed chlorotic blotches, the damage concentrated around midribs and lateral veins. This is the first report of lilac serving as a host for a North American tingid

Wheeler, A. G, Jr.

English

Valparaiso University

The Great Lakes Entomologist Volume 22 Number 1 - Spring 1989 Number 1 - Spring 1989 Article 5 April 1989 Late Lilac, Syringa Villosa: New Host of the Lace Bug Leptoypha Mutica (Heteroptera: Tingidae) A. G. Wheeler Jr. Pennsylvania Department of Agriculture Follow this and additional works at: https://scholar.valpo.edu/tgle Part of the Entomology Commons Recommended Citation Wheeler, A. G. Jr. 1989. "Late Lilac, Syringa Villosa: New Host of the Lace Bug Leptoypha Mutica (Heteroptera: Tingidae)," The Great Lakes Entomologist, vol 22 (1) Available at: https://scholar.valpo.edu/tgle/vol22/iss1/5 This Peer-Review Article is brought to you for free and open access by the Department of Biology at ValpoScholar. It has been accepted for inclusion in The Great Lakes Entomologist by an authorized administrator of ValpoScholar. For more information, please contact a ValpoScholar staff member at scholar@valpo.edu. 1989 THE GREAT LAKES ENTOMOLOGIST 35 LATE LILAC, SYRINGA VILLOSA: NEW HOST OF THE LACE BUG LEPTOYPHA MUTICA (HETEROPTERA: TINGIDAE) A. G. Wheeler, Jr.' ABSTRACT The lace bug Leptoypha mutica, a specialist on trees and shrubs of the Oleaceae, feeds mainly on ash, Fr xinus spp., and fringetree, Chionanthus virginicus. In July 1987 and 1988, nymphs and adults were observed on late lilac, Syringa villosa, in a landscape planting in northwestern Pennsylvania. Infested leaves showed chlorotic blotches, the damage concentrated around midribs and lateral veins. This is the first report of lilac serving as a host for a North American tingid. Leptoypha mutica (Say) is an apparently bivoltine tingid that overwinters in the adult stage (Dickerson and Weiss 1916). Known from Quebec and Ontario south to Florida and west from North and South Dakota to Texas, this wide-ranging species also has been recorded from Socorro Island, Mexico (Drake and Ruboff 1965). It often is only locally abundant on shrubs and trees of the Oleaceae. Sometimes referred to as the fringetree lace bug (Blatchley 1926, Mead 1975, Beshear et al. 1976), L. mutica is an occasional pest of ornamental fringetree, Chionanthus virgillicus. In describing the immature stages of L. mutica, Dickerson and Weiss (1916) reported damage to nursery-grown fringetree in New Jersey. Foliage of infested plants showed the mottling or chlorosis typical of lace bug feeding and, in severe infestations, leaves turned yellowish brown and withered. Ash trees also serve as hosts (e.g., McAtee 1917, 1923, Bailey 1951, USDA 1963, Horn et al. 1979), with L. mutica specifically recorded from white ash, Fraxinus americana (Hussey 1922, Froeschner 1944). Several authors have noted an apparent preference for seedling or sapling ash (Hussey 1922, Bailey 1951, 1959, Horn et al. 1979). In Texas, Drake (1918) reported L. mutica from the oleaceous shrub swamp privet, Forestiera acuminata. Herein, I report an ornamental lilac as a new host of L. mutica. This is the first record of a North American lace bug developing on a species of Syringa.Leptoypha mutica on Lilac On 30 July 1987, my attention was drawn to chlorotic areas on leaves of late lilac, Syringa villosa, growing on the campus of Alliance College, Cambridge Springs, in Crawford Co., Pennsylvania. Lilacs may be infested by privet thrips, Dendrothrips ornatus (Jablonowski), which impart a grayish or silvery cast to the foliage (e.g., Schread 1969), but pale, discolored areas characteristic of injury inflicted by mesophyll-feeding mites, leafhoppers, or plant bugs are unusual on leaves of Syringa spp. The insect causing foliar chlorosis on late lilac, a Chinese shrub (Everett 1982), proved to be L. mutica. Four adults were collected on one large plant (about 3 m high), and severallate-instar nymphs IBureau of Plant Industry, Pennsylvania Department of Agriculture, Harrisburg, PA 17110 1Wheeler: Late Lilac, Syringa Villosa: New Host of the Lace Bug LPublished by ValpoScholar, 198936 THE GREAT LAKES ENTOMOLOGIST Vol. 22, No.1 Fig. 1. Chlorosis on leaf of lale lilac, Syringa vil/osa, caused by th feeding of Leptoypha mutica. were found on lower leaf surfaees. Cast skins and black spots of excrement also were present on abaxial surfaces. The infestation was restricted to only a few leaves, as Horn et al. (1979) noted for L. mutica on ash in North Carolina. Chlorosis on infested leaves was mainly adjacent to the midrib and lateral veins (Fig. 1). In 1988, L. mutica was found to have colonized the same late lilac by 20 July. Observations at Alliance College showed that four f five additional S. villosa plants in separate areas of the campus had chlorotic foliage. Sevcn adults and about that many fourth and fifth instars were collected; additional adults and nymphs were seen. As many as eight exuviae were present on an infested leaf. Nymphs and adults also were observed on seedling lilacs growing heneath a large S. villosa. 2The Great Lakes Entomologist, Vol. 22, No. 1 [1989], Art. 5https://scholar.valpo.edu/tgle/vol22/iss1/51989 THE GREAT LAKES ENTOMOLOGIST 	 37 No lace bugs were found on large green ash, F. pennsylvanica, trees growing on campus or on volunteer ash adjacent to infested lilacs; in some cases, branches of volunteer ash intertwined with lilac branehes. Only one leaf of a seedling ash growing under a lilae showed possible laee bug injury, but no tingids or nymphal exuviae were found on the lower surface. DISCUSSION Lilacs are not known to serve a host plants of North American Tingidae. Drake and Ruhoff's (1965) catalog of world lace bugs does not list any species from Syringa, but L. capitata (Jakolev) has now been recorded from S. reticulata Rara in Japan (Tomokuni 1987). Whether L. mutica infests late lilac at other localities and whether other Syringa spp. will be included in its range of oleaceous hosts await further observations. Bailey (1951) remarked that specimens from fringetree showed "constant differences" and cited a personal communication from R. I. Sailer; these differences, however, were not described .. The question of possible host-induced variation-color ranges from light brown to black, and hemelytral markings are variable-therefore deserves study. It has been suggested that L. mutica might be a composite of sibling taxa (Slater and Baranowski 1978). Although this is possible, it appears that th observed differences in coloration and markings represent intraspecific variation within a lace bug that feeds on several genera of the Oleaceae. ACKNOWLEDGMENTS I thank R. C. Froeschner (Department of Entomology, Smithsonian Institution, Washington, D.C.) for eonfirming the identification of L. mutica, H. G. Wolff (BPI, PDA) for assistance in the field, J. F. Stimmel (BPI,PDA) for the photograph used in Fig. 1, W. L. Mountain (BPI,PDA) for identifying the host plant, and T. J. Henry (Systematic Entomology Laboratory, USDA, clo U. S. National Museum of Natural History, Washington) and K. Valley (BPI,PDA) for helpful comments on the manuscript. LITERATURE CITED Bailey, N. S. 1951. The Tingoidea of New England and their biology. Entomo!' Amer. 31:1-140. Bailey, N. S. 1959. Additions to the bioecology of the New England Tingidae and Piesmidae (Heteroptera). Psyche 66:63-69. Beshear, R. J., H. H. Tippins, and J. P. Howell 1976. The lace bugs (Tingidae) of Georgia. Georgia Agric. Exp. Stn. Res. Bull. 188. 29 pp. Blatchley, W. S. 1926. Heteroplera or true bugs of eastern North America, with especial reference to the faunas of Indiana and Florida. Nature Pub!. Co., Indianapolis. 1116 pp. Dickerson, E. L. and H. B. Weiss. 1916. Notes on Leptoypha mutica Say (Hemip.). Entomo!. News 27:308-310. Drake, C. J. 1918. Notes on North American Tingidae (Hem.-Het.). Bull. Brooklyn Entomo!. Soc. 13:86-88. Drake, C. J. and F. A. Ruhoff. 1965. Lacebugs of the world: a catalog (Hemiptera: Tingidae). U. S. Natl. Mus. Bull. 243. 634 pp. Everett, T. H. 1982. The New York Botanical Garden illustrated encyclopedia f horticulture. Vo!. 10 Ste-Zy. Garland Pub!., New York. pp. 3225-360J. Froeschner, 	 R. C. 1944. Contributions to a synopsis of the Hemiptera of Missouri, Pt. Ill. Lygaeidae, Pyrrhocoridae, Piesmidae, Tingidae, Enicocephalidae, Phymatidae, Ploiariidae, Redu­viidae, Nabidae. Amer, MidI. Nat. 31:638-683. 3Wheeler: Late Lilac, Syringa Villosa: New Host of the Lace Bug LPublished by ValpoScholar, 198938 THE GREAT LAKES ENTOMOLOGIST Vol. 22, No.1 Hom, K, F.• C. O. Wright, and M. H. Farrier. 1979. The lace bugs (Hemiptera: Tingidae) of North Carolina and their hosts. North Carolina Agric. Exp. Stn. Tech. Bull. 257. 22 pp. Hussey, R. F. 1922. Hemiptera from Berrien Connty, Michigan. Occas. Pap. Mus. Zoo!. Univ. Michigan 118:1-39. McAtee, W. L 1917. Key to the Nearctic species of Leptoypha and Leptostyla (Heteroptera Tingidae). Bull. Brooklyn Entomo!. Soc. 12:55-64. McAtee, W. L. 1923. Tingitoidea of the vicinity of Washington, D. C. (Heteroptera.). Proc. Entomo!. Soc. Wash. 25:143-151. Mead, F. W. 1975. The fringetree lace bug, Leptoypha mutica (Say) (Hemiptera: Tingidae). Florida Dep. Consum. Serv., Div. Plant Ind. Entomo!. Circ. 161. 2 pp. Schread, C. 1969. Privet thrips. Connecticut Agric. Exp. Stn. Circ. 230. 4 pp. Slater, J. A. and R. M. Baranowski. 1978. How to know the true bugs (Hemiptera-Heteroptera). Wm. C. Brown, Dubuque, Iowa. 256 pp. Tomokuni, M. 1987. The Tingidae of Hokkaido, Japan (Insecta, Heteroptera) [in Japanese. English summary]. Mem. Nat!. Sci. Mus., Tokyo 20:115-122. USDA. 1963. A lace bug (Leptoypha mutica). Coop. Econ. Insect Rep. 13(32):924. 4The Great Lakes Entomologist, Vol. 22, No. 1 [1989], Art. 5https://scholar.valpo.edu/tgle/vol22/iss1/5

Late Lilac, \u3ci\u3eSyringa Villosa\u3c/i\u3e: New Host of the Lace Bug \u3ci\u3eLeptoypha Mutica\u3c/i\u3e (Heteroptera: Tingidae)

https://scholar.valpo.edu/cgi/viewcontent.cgi?article=1662&amp;context=tgle

Late Lilac, \u3ci\u3eSyringa Villosa\u3c/i\u3e: New Host of the Lace Bug \u3ci\u3eLeptoypha Mutica\u3c/i\u3e (Heteroptera: Tingidae)

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