l.!ay 1988 UARYLAND ENTOMOLoGIST Vot . 3 ( 2 ) Voh-rre 3 1988 [funber 2 CONTENTS Morgan, N. O. Tabanid (Diptera) survey at five horge farms in Maryland, 1984.. 25-29 Staines, C. L. The Dryopidae (Coleoptera) of Maryland .....30-32 Staines, C. L. & S. L. Staines. Observatlons on, new adult host plants for, CalllrhopaIus (Pseudoceorhlnus) blfasclatus (RoeIofs) (Coleoptera: Curculionidae), with a revlew of host plants . .33-39 Stevenson, H. c. AII flve species of Metaxaglaea (Lepldoptera: Noctuidae, Cul I i inae ) at a single site in Tidelrater Maryland ...40-41 Staines, C. L. The Noteridae (Coleoptera) of Maryland EUPHYDRYAS " " '42-45 Stevenson, H. G. Dasychlra atrlvenosa (PaIm) (Lepldoptera: m Lynantriidae) in Tidewater Maryland..... ....46 Platt, A. P. Northern records of Papi.Ilo (HeracIldes) creEphontes (Cramer) (Lepidoptera: Papilionidae) in the midwestern United states .....47-5I Book Review- Handbook of insect rearlng, E. J. cerberg......52 Stevenson, H. c. Xestla bolllt (Grote) (Lepidoptera: Noctuidae, Noctuinae) in Tidewater Maryland..........53-54 iL Book Review- Insects, thelr blology and cultural hlstory, E. J- cerberg ....54 Editoral PoIicy of the Maryland Entomologist. , . .55-56 Editori.al .........29 Literature Notices . .29, 4L issued 20 May 1988 MARYLAND ENTOMOLOGIST MARYLAND ENTOMOLOGIST 3(2) t25-29 (1988) ICAL SOCIETY MARYLAID ENTOTOLG Iabanicl (Diptera) Survey at Five Horse Farms in Maryland, Executlve Conmlttee u 1 984 I Neal O. llorgan Austln P. Platt, Presldent Livestock Phll lp J. Kean, Vlce Presldent Insects Laboratory, USDA; ARS, Beltsvi11e, MD 20705 Robln G. Todd, Secretary-Treasurer Robert S. Bryant, Hlstorlan Abstract Thomas E. l{al lenmaler, Phaeton Edltor As parts of a potomac C. L. Stalnes, Jr., Journal Edltor - Horse Fever Vector investiga_ tion, 1984, the Tabanidae in Montgomery County, Mary1and, vrere.surveyed by.using Member at Largc modified New Jeisey box traps. Seven spgci,es of Tabanidae were coltected and i-dentifiedi chrysops univittatus, Elmbonitra lasiophthalma, fabanui iineofa, t. ' Davld Fl alm qulnqueyittatus, T. sinilis, T. stygiua, and I. trimacuratus. Almost 90* of the hoise ities corlected quinquevittatus. were T. The purpose of the lrhryland Entonol oglccl Soclety, whlch was formed 1 November 1971, ls to prmote the sclence of entomology ln all A_survey was conducted (Diptera) Its branches; to prwlde a meetlng place professlonal and amateur . of the Tabanidae for associated with the horse farms of northwestern Monlgomery entomologlsts resldlng ln ihryland and the Dlstrlct of Columbla; to County, an area with a recent potomac lssue perlodlcal and other publlcatlons deallng entmology and to history of Horse Fever rlth (PHF). Since 1981 more than 400 horses in Maryland have been facll ltate the exchange of ldeas and lnformatlon through lfs meetlngs diagnosed as having the disease. Although and publ lcatlons. the-etiological agent has been established as Erlichia iisticci. Holl_and l4ambershlp ln the Soclel"y ls open to al I persons lnterested ln (Ho11and, et. al., 1985). haenatophagus the study of entomology. members recelve the ltryland arthropods have not All Journal, been identified as positive vectois iHolland, 6t. a:..r I985; Ertmloglsf, and monthly netvsl etter, Phaeton. lnstltutlons may Roh1, 1985). The 1984 tabanid survey was iniended to subscrlbe to the lbryland Ertmloglst but may not become members. collect live representative species of potential vectors Prospectlve members should send to the Treasurer full dues for the from horse farms within the pHF endemic area, and preserve current year, fogether wlth thelr ful I name, address, telephone them by quick-freezing pHF number, and speclal entomologlcal Intarests. for subsequent palhogen examinations. This report concefns only the sp6cies survey. Actlve members- annual dues $5.00 Junlor members- annual dues $5.00 Materials and Methods lnstltutlonal subscrl ptlons- $6.00 Five horse farms were selected on the basis of !3yi"S a history of pHF or being adjacent to such a farm. Send remlttances, payable to i4aryland Entqnologlcal Soclety, A11 cooperating farms had and address changes to: Robln,G. Todd, 8420 I'hyreado Court, horses in-stables as well as in corrals and pastures. A1l" of the farms were within 9.5 km Baltlmore, W 21201. of the Potomac River (Fig. 1), in gently rolling terrain, and each had 1 or more intermittent streams. faims 1, 3, Back lssues of th6 ttryland Entmtoglsrt and recent lssues and 4 were equestrian schools of Piaeton are avallable, to members, frcrn the Treasurer. and boarded several privaiely owned horses. Farms 2 and 5_ were primarily horse Breeding' Phaeton ls $0.25 per number and the liryland Ertmloglsf, ls $1.25 farms. The stables and coPy. corrals were very clean, free of Per litter and each farm had several cats aid dogs, secondary hosts.for haematophagus Diptera. The modifi6d'New Jersey The l,bryland Entomol oglcal Soclety Is a non-prof It, sclentlf lc trap (Morgan & Lee, 1977) was organlzatlon. l,lgetlngs are held on the thlrd Frlday of every month the collecting device. Two were placed on each farm. At 4 farms (*1-4, the traps were (frm October to l.by) af 8:00 p. m., ln lecture hall f120 of the located 30-50 m apart, outside of l.4aryland Baltlmore County. of, but near corral oi Blol oglcal Sclences Bulldlng, Unlverslty pasture fences, and anchored to wooden stakes driven into the ground. At farm 5, for aesthetic purposes t.he traps were placed within an empty pasture. Unfoitunately, midway through the survey season several mares with foais were 26 27 placed In that pasture and that part of the survey was rapldly termlnated. The mares demol lshed the traps and the remnants uere removed on July 11. The survey was begun ltiay 29 ( f lrst col I ec+ I on date June 5) and ended September 12, 1984. 0nly I lve fl les uere col lected reekly from the traps by uslng the posltlve phototactlc response of the fl les to transfer them to smal l, more transportabl e cages. 0ne cage measurl ng 26x26x26 cm, 4 sldes of 12 mesh alumlnum screen, t of solld metal, and I contalnlng a sl ldlng metal panel of clean glass, was used to col lect the fl les from both traps at a farm. A corner of the box trap top screen was secured to the box by 20 cm strlps of Velcro o to create a resealabte openlng In the screen. The cage uas placed over the Montgomery County openl ng, the gl ass panel t,as opened hal f-w?y, a sheet of ri ii black cloth ras draped over the remalnder of the box top, t and the posltlve phototactlc reactlon of the trapped fl les q l caused them to fly Into the smal I cage. The transfer of flles to the small cage was accompllshed ln <1 mlnute. By thls method only I lve fl les uere col lected for the subseguent pathogen examl natlons. Cl osl ng the gl ass panel and the box trap top openlng and removal of the cloth readled the trap for more captors. Fl Ies so col lected, and transferred to the laboratory, survlved >24 hr. rhen a source of sugar-wafer was aval I abl e. The fl Ies were ldentlfled uslng Thompson (1967), whlch I lsts 48 specles of Tabanldae col lected ln Montgomery County, and Pechuman (197 2' . Resul ts and Dl scussl on Durlng the May 29-September 12, 1984 perlod, 7 specles of tabanlds pl us the Muscldae, Stotoxys calcltrans (1.) were col lected ln the modlfled New Jersey box traps (Table I ). The tabanld specles rere: Chrysops unlvlttatus Macquart, Hyrborltra laslophthalra (Macquart), Figure 1. Locations of 5 horse farms surveyed for Tabanidae Tcbanus I lneola Fabrlcl us, T. qulaqueylttatus near the Potomac River, Hontgomery County, Mary'land, W,ledemann, T. slrllls Macquart, T. styglus Say, and '1984. T. trlraculatus Pal lsot de Beauvots. Al I speclmens of Tabanl dae col I ected were femal es, and the C. unlvlttatus was the flrst deer fly collected ln my box traps ln >10 yrs. of Maryland tabanld surveys. As shown ln Table 1, only 2 specles were col lected from every farm surveyed, H. laslophthalna and T. qulnquevlttatus. The I ast H. !aslophthatra ras col lected June 19, and T. gulnquevlttatus ras col lected every ueek, June 12 to August 17. From August l7 to September 12, no I lve Tabanldae or Muscldae were col lected from the traps. lnasmuch as only I lve fl les were deslred durlng the suivele no attempt was made to prevent Invaslons of the box traps' by scavenglng ants. SInce no dead fl Ies were col lected, a few other specles knorn to be Indlgenous to the area may 28 have died in the traps and been overlooked or were This paper reports the results of research only. scavenged by other insects or rodents. Mention The of a proprietary product does not constitute a Muscidae, S. calcitrans, was incLuded here recommendation for use by the United States Department of because it was a najor haematophagous pest of horses and It Agriculture. was the second most numerous species collected during the survey. Literature Cited The modified New Jersey box trap is a EuccesEful fenale horse fly trap, but is totally passlve and may Holland, capture C. iI., et. al. 1985. Brlichla risticci sp. Nov.i only a limited sanple of the horse flies endemic ln etiologie agent of monocytic ehrlichiosis (pot6mac Horse the survey area. If the traps had been emptled more than Fever). Intern. .r. Syst. Bact. 352524-526. once each week, perhaps more species could have been Morgan, N. O. & R. P. tee. L977. Vegetative barriers collected. Thompson (I967) used several methods for influences flight. direction of siltnarsh greenheads. colJ.ecting fabanidae in Maryland and was able to present a Mosq.