New adult host records of Agrilus langei Obenberger, A. pilosicollis Fisher, and Dicerca mutica LeConte (Coleoptera: Buprestidae) are reported. The known geographic range of A. pilosicollis is expanded from the type location in Kansas south to Texas and east to North Carolina. Images with key characters of each of the three species are included.
Among the nearly 800 species of buprestids in North America (north of Mexico) are those known from very few specimens. Distribution and plant host information for such species is understandably limited and, in many cases, completely unknown (Nelson et al. 2008). A knowledge of host utilization is often the first step in under­standing the life history of such buprestid species. Adult host records of rarely encountered buprestids can be useful starting points to determine larval hosts, as adults of non-anthrophilous genera are frequently found feed­ing on larval plant hosts. Herein we report distribution and adult plant host records that may prove useful in future study of Agrilus langei Obenberger, A. pilosicollis Fisher and Dicerca mutica LeConte

Hansen, Jason A.

Nalepa, Christine A.

English

DigitalCommons@University of Nebraska

University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Insecta Mundi Center for Systematic Entomology, Gainesville, Florida 5-28-2021 New adult host records for three Buprestidae (Coleoptera) rarely encountered in the United States and significant extension of the known geographic range of Agrilus pilosicollis Fisher Jason A. Hansen Christine A. Nalepa Follow this and additional works at: https://digitalcommons.unl.edu/insectamundi  Part of the Ecology and Evolutionary Biology Commons, and the Entomology Commons This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Center for Systematic Entomology, Inc., Gainesville, FLDate of issue: May 28, 20210869New adult host records for three Buprestidae (Coleoptera)  rarely encountered in the United States and  significant extension of the known geographic range  of Agrilus pilosicollis FisherJason A. HansenUSDA-APHIS-PPQ100 Los Indios Blvd.Los Indios, TX 78550Joshua P. BashamUSDA-APHIS-PPQ1410 Kensington Square Ct. Suite 101Murfreesboro, TN 37130Christine A. NalepaNCDA&CS1060 Mail Service CenterRaleigh, NC 27699Insecta MundIA journal of world insect systematicsPage Count: 6Hansen et al.Hansen JA, Basham JP, Nalepa CA. 2021. New adult host records for three Buprestidae (Coleoptera) rarely encountered in the United States and significant extension of the known geographic range of Agrilus pilosicollis Fisher. Insecta Mundi 0869: 1–6.Published on May 28, 2021 byCenter for Systematic Entomology, Inc.P.O. Box 141874Gainesville, FL 32614-1874 USAhttp://centerforsystematicentomology.org/Insecta Mundi is a journal primarily devoted to insect systematics, but articles can be published on any non-marine arthropod. Topics considered for publication include systematics, taxonomy, nomenclature, checklists, faunal works, and natural history. Insecta Mundi will not consider works in the applied sciences (i.e. medi-cal entomology, pest control research, etc.), and no longer publishes book reviews or editorials. Insecta Mundi publishes original research or discoveries in an inexpensive and timely manner, distributing them free via open access on the internet on the date of publication.Insecta Mundi is referenced or abstracted by several sources, including the Zoological Record and CAB Abstracts. Insecta Mundi is published irregularly throughout the year, with completed manuscripts assigned an individual number. Manuscripts must be peer reviewed prior to submission, after which they are reviewed by the editorial board to ensure quality. One author of each submitted manuscript must be a current member of the Center for Systematic Entomology.Guidelines and requirements for the preparation of manuscripts are available on the Insecta Mundi website at http://centerforsystematicentomology.org/insectamundi/Chief Editor: David Plotkin, insectamundi@gmail.comAssistant Editor: Paul E. Skelley, insectamundi@gmail.comLayout Editor: Robert G. ForsythEditorial Board: Davide Dal Pos, Oliver Keller, M. J. PaulsenFounding Editors: Ross H. Arnett, Jr., J. H. Frank, Virendra Gupta, John B. Heppner, Lionel A. Stange, Michael C. Thomas, Robert E. WoodruffReview Editors: Listed on the Insecta Mundi webpagePrinted copies (ISSN 0749-6737) annually deposited in librariesFlorida Department of Agriculture and Consumer Services, Gainesville, FL, USAThe Natural History Museum, London, UKNational Museum of Natural History, Smithsonian Institution, Washington, DC, USAZoological Institute of Russian Academy of Sciences, Saint-Petersburg, RussiaElectronic copies (Online ISSN 1942-1354) in PDF formatArchived digitally by PorticoFlorida Virtual Campus: http://purl.fcla.edu/fcla/insectamundiUniversity of Nebraska-Lincoln, Digital Commons: http://digitalcommons.unl.edu/insectamundi/Goethe-Universität, Frankfurt am Main: http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hebis:30:3-135240Copyright held by the author(s). This is an open access article distributed under the terms of the Creative Commons, Attribution Non-Commer-cial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. http://creativecommons.org/licenses/by-nc/3.0/Insecta MundI0869: 1–6 2021New adult host records for three Buprestidae (Coleoptera)  rarely encountered in the United States and  significant extension of the known geographic range  of Agrilus pilosicollis FisherJason A. HansenUSDA-APHIS-PPQ100 Los Indios Blvd.Los Indios, TX 78550jason.a.hansen@usda.govJoshua P. BashamUSDA-APHIS-PPQ1410 Kensington Square Ct. Suite 101Murfreesboro, TN 37130joshua.basham@usda.govChristine A. NalepaNCDA&CS1060 Mail Service CenterRaleigh, NC 27699christine.nalepa@ncagr.govAbstract. New adult host records of Agrilus langei Obenberger, A. pilosicollis Fisher, and Dicerca mutica LeConte (Coleoptera: Buprestidae) are reported. The known geographic range of A. pilosicollis is expanded from the type location in Kansas south to Texas and east to North Carolina. Images with key characters of each of the three species are included.Key words. Agrilinae, Chrysochroinae, Nearctic.ZooBank registration. urn:lsid:zoobank.org:pub:92F2547B-C2CB-4991-8539-E8473BE4B52BIntroductionAmong the nearly 800 species of buprestids in North America (north of Mexico) are those known from very few specimens. Distribution and plant host information for such species is understandably limited and, in many cases, completely unknown (Nelson et al. 2008). A knowledge of host utilization is often the first step in under-standing the life history of such buprestid species. Adult host records of rarely encountered buprestids can be useful starting points to determine larval hosts, as adults of non-anthrophilous genera are frequently found feed-ing on larval plant hosts. Herein we report distribution and adult plant host records that may prove useful in future study of Agrilus langei Obenberger, A. pilosicollis Fisher and Dicerca mutica LeConte.Materials and Methods The following are collection abbreviations used for depositories of specimens herein:EDNC North Carolina Department of Agriculture, Raleigh, North Carolina, USATAMU Texas A & M University College Station, Texas, USAJAHC  Jason A. Hansen Collection, Harlingen, Texas, USAJPBC  Joshua P. Basham Collection, Murfreesboro, Tennessee, USA2 · May 28, 2021 Hansen et al.Unidentified specimens collected by Jeff A. Back (Hewitt, Texas), specimens collected by the first author, and material from emerald ash borer monitoring efforts in North Carolina were determined to species using available literature (Fisher 1928; Nelson 1975; Westcott and Noguera 1995). Among the specimens examined, three species stood out: Agrilus langei, A. pilosicollis and Dicerca mutica. Detailed images of the A. pilosicol-lis specimen from Texas were sent for comparison to the U.S. National Museum of Natural History (USNM; Washington, D.C.), where the unique holotype is housed. The North Carolina specimens were determined to be A. pilosicollis by comparison to the published species description and the Texas specimen. Two specimens of A. langei, one of each sex, were deposited at Texas A & M University (TAMU; College Station, Texas) along with single Texas specimens of A. pilosicollis and D. mutica. An additional three specimens of A. langei remain in the collection of the first author (JAHC). The 2015 specimen of A. pilosicollis from North Carolina is deposited in the collection of the second author (JPBC) and the 2018 specimen in the collection at North Carolina State University (EDNC; Raleigh, North Carolina). Results and DiscussionAgrilus langei Obenberger, 1935TEXAS: Cameron Co., nr. Sabal Palm Sanctuary, 25.859757, −97.424329, 4–5.xi.2018 (2), 14.x.2019 (3) on Abu-tilon trisulcatum, coll. J.A. Hansen. New adult host record.Though not uncommon in the more tropical habitat of Mexico, A. langei is rarely encountered in the United States. A single male specimen in the TAMU collection labeled from “Tex” was found by Westcott and Noguera (1995) to be incorrectly identified as A. cavifrons Waterhouse. Still, no mention of its occurrence in the U.S. is seen in current catalogs (Nelson et al. 2008; Bellamy 2008). The vague label data and lack of any additional speci-mens are likely reasons for its exclusion from the published North American buprestid fauna. A chance image of A. langei from Hidalgo Co., Texas was submitted to the popular website bugguide.net, which appeared to confirm its presence in the U.S. (Zurovec 2012). Though the specimen was not collected or vouchered, the images were of sufficient quality for Richard L. Westcott to confirm the identity of the beetle. The specimens reported here were collected by hand or with sweep net over a two-year period just north of Sabal Palm Sanctuary along the border wall in Cameron Co., Texas. All specimens were collected while resting on leaves of Abutilon trisulcatum (Jacq.) Urb. The first specimen collected was a female resting on the leaf of an iso-lated, knee-high Abutilon plant. The following day a large patch of mature A. trisulcatum was found not far from where the original specimen was collected in a vacant lot between the border wall and an adjacent neighborhood. Upon further investigation, a male specimen was seen flying among the plants and subsequently collected (Fig. 1a–e). Despite an exhaustive search of the area, no other specimens were found. Considering the time of year, it was likely peak flight time had passed several weeks earlier. The following year the author returned to the same location on 14.x.2019 and collected three additional specimens, despite most of the plants having been bulldozed as the nearby neighborhood expanded. The collection of five specimens in south Texas over a two-year period (2018–2019), along with the image posted on bugguide.net and the vaguely labeled TAMU specimen, confirm the presence of A. langei in the United States, specifically in the two southernmost Texas counties of Cameron and Hidalgo. Albutilon trisulcatum is known to occur from Nicaragua north to Hidalgo and Cameron counties in the United States (Fryxell 1983). It was one of several native plants used to manage invasive grasses as part of a 15-year revegetation program in the Lower Rio Grande Valley (Best 2009). Several other species of Abutilon occur in the United States, but no records of A. langei exist north of the two southmost counties, suggesting A. langei may prefer specific Abutilon species or simply is not suited to a more northerly environment. It remains to be shown if A. langei is associated with A. trisulcatum exclusively; seven other species of Abutilon occur in south Texas. Further investigation may show a more diverse host range within the plant genus, as is common with many Agrilus species. No larval activity could be found in the stems or roots of several plants inspected by the first author. Given the low number of adults in the area, it is possible larvae would be hard to locate, despite the fact its late instar larvae would undoubtedly rival those of A. planipennis Fairmaire (emerald ash borer) in size. Short_title Insecta Mundi  0869 · 3Figure 1. Agrilus langei Obenberger ♂. a) Dorsal view. b) Ventral view. c) Lat-eral view. d) Dorsal view of aedeagus. e) Frons.Given the limited distribution of A. langei in the United States and the dearth of individuals observed in south Texas, it is reasonable to have concern about the elimination of habitat where A. langei is known to occur along the southern border. Abutilon trisulcatum was found in small patches by the author in multiple locations in Hidalgo and Cameron counties, but A. langei was observed only near Sabal Palm Sanctuary. As development continues to occur on land surrounding the few existing protected areas across the Lower Rio Grande Valley, the importance of preserving the shrinking habitat for native wildlife to thrive has become ever more pronounced.In the United States, A. langei somewhat resembles A. cavifrons in size and general mottling, but the latter is only known from Arizona and is readily distinguished by its more robust form and rounded elytral tips. Agrilus pilosicollis Fisher, 1928TEXAS: San Saba Co., 2.5 mi. NW Bend, 18.iv.1994 (1♀), on live oak [Quercus virginiana Mill.] tree, coll. J.A. Back. New state and adult host record. NORTH CAROLINA: Wayne Co. Goldsboro, Faith Christian Acad-emy, 35°24′00″N, 78°00′42″W, Cerceris fumipennis Say prey, 15.vi.2015 (1♀), coll. C.A. Nalepa; Franklin Co., 4 · May 28, 2021 Hansen et al.Franklinton, Franklinton Park, 36°06′25″N, 78°26′06″W, C. fumipennis prey, 10.vi.2018 (1♀), coll. N. Oderkirk. New state record.Agrilus pilosicollis was originally described from a single specimen taken in Garden City, Kansas in 1914 (Fisher 1928). No additional specimens have come to light since its description until the present records. The three female specimens above range in size from 11.2–12 mm, somewhat larger than the holotype (10.5 mm). The two North Carolina specimens were collected as part of a biosurveillance program targeting A. planipennis using the crabronid wasp Cerceris fumipennis Say, which provisions its nests with buprestid beetles as a larval food source. The two female specimens were collected in different counties three years apart. The pubescent spots on the elytra of one specimen were less evident, especially the median one which was represented by a single golden seta on each elytron. This is presumed to be the result of typical setal loss over the lifespan of the beetle or from rough handling by the wasp. The golden setae comprising the elytral spots were broader than the surrounding elytral setae, which were white to translucent. Male representatives of A. pilosicollis are unknown. The newly discovered Texas (Fig. 2a–e) and North Carolina specimens represent a surprising expansion of the known geographic range of A. pilosicollis from a solitary midwestern state to potentially include the entire Figure 2. Agrilus pilosicollis Fisher ♀. a) Dorsal view. b) Ventral view. c) Lateral view. d) Lateral view of pronotum. e) Proclaw.Short_title Insecta Mundi  0869 · 5Figure 3. Dicerca mutica LeConte, ♂. a) Dorsal view. b) Ventral view. c) Lateral view. d) 5th abdomi-nal sternite, emargination with broad, truncate tooth indicated. e) Convex prosternal process.southeastern U.S. Equally surprising is the fact that the North Carolina specimens come from separate locals within the state, suggesting it may not be as rare as it appears to be. The Texas specimen taken on live oak suggests rearing from Quercus sp. may be fruitful in future searches for the larval host.Agrilus pilosicollis is most similar in appearance to A. quadriguttatus Gory and A. granulatus (Say) and may easily be confused in collections with them. It can be separated by lack of a prehumeral carina and presence of a broadly rounded or subtruncate prosternal lobe. Dicerca mutica LeConte, 1860TEXAS: McLennan Co., Harris Ck. Hike n Bike Path @ Old Loreana & Church Rds., 31.474449, −97.279180, 17.v.2013 (1♂), on Osage orange tree [Maclura pomifera (Raf.) C.K. Schneid], coll: J.A. Back. New adult host record.6 · May 28, 2021 Hansen et al.Dicerca mutica is known from only six published specimens ranging from northeastern New York to Texas. The single female record from Texas (Knull 1947) lacks specific locality data. The specimen reported here repre-sents the only other record from Texas (Fig. 3a–e). At 18 mm in length, it is much larger than previously reported males (15.3–16.0 mm), but still within the size range of the species (15.2–20.0 mm). Though no larval host is known, there is a report of an adult male found on Acer saccharum saccharum Marsh in Missouri (Nelson et al. 1981). The adult host record of M. pomifera is intriguing given that A. saccharum, previously the only adult host record, is not known from Texas, while M. pomifera is widely distributed throughout Missouri, including the counties where D. mutica has been collected previously. Other records from New York and Maryland also come from areas where M. pomifera is present. Though it may be an incidental association, the possibility that M. pomifera may serve as a larval host merits further investigation.Dicerca mutica most closely resembles D. lurida (Fabricius) and related species but can be separated by the elytral apices being entire, produced slightly at suture, and by having the prosternal process convex (♂) to flat (♀) rather than concave.AcknowledgmentsWe would like to thank Eugenio Nearns (USDA-APHIS-PPQ) for comparing images of A. pilosicollis with the holotype, Norman Woodley for his thoughts on the same images, Rick Westcott for sharing his insight, and Chris Best (Texas State Botanist, U.S. Fish and Wildlife Service) for confirmation of Abutilon trisulcatum. Many thanks to Jeff A. Back for allowing access to specimens from his collection and generously donating his two rare finds to the TAMU collection. Finally, thanks to Ted MacRae and Kyle Schnepp for their thorough reviews of the manuscript.  Literature CitedBellamy CL. 2008. Vol. 4. Agrilinae: Agrilina through Trachyini. Pensoft Series Faunistica No. 79. p. 1932–2685. In: Bellamy CL. World catalogue and bibliography of the jewel beetles (Coleoptera: Buprestoidea). Pensoft Publishers; Sofia and Moscow. 3264 p.Best CF. 2009. Fighting weeds with weeds: Battling invasive grasses in the Río Grande Delta of Texas. p. 307–318. In: Van Devender TR, Espinosa-García FJ, Harper-Lore BL, Hubbard T (eds.). Invasive plants on the move. Controlling them in North America. Proceedings of Weeds Across Borders 2006 Conference, Hermosillo, Sonora, May 25–28, 2006; Tucson, AZ. 394 p.Fisher WS. 1928. A revision of the North American species of buprestid beetles belonging to the genus Agrilus. United States National Museum Bulletin 145: 1–347.Fryxell JE. 1983. A revision of the Abutilon sect. Oligocarpae (Malvaceae), including a new species from Mexico. Madroño 30(2): 84–92.Knull JN. 1947. New Buprestidae with notes (Coleoptera). Ohio Journal of Science 47(4): 174–176, fig. 1–7.Nelson GH. 1975. A revision of the genus Dicerca in North America (Coleoptera: Buprestidae). Entomologische Arbeiten aus dem Museum G. Frey 26: 87–180, fig. 1–86.Nelson GH, Verity DS, Westcott RL. 1981. Additional notes on the biology and distribution of Buprestidae (Coleoptera) of North America. The Coleopterists Bulletin 35(2): 129–152. Nelson GH, Walters, Jr. GC, Haines RD, Bellamy CL. 2008. A catalog and bibliography of the Buprestoidea of America North of Mexico. The Coleopterists Society, Special Publication No. 4: iv + 1–274.Westcott RL, Noguera FA. 1995. Six new species of Buprestidae (Coleoptera) from Mexico. Folia Entomologia Mexicana 89(1993): 35–54.Zurovec T. 2012. Agrilus langei. Available at https://bugguide.net/node/view/724053/bgimage (Last accessed 25 March 2021.)Received March 25, 2021; accepted April 21, 2021.Review editor Oliver Keller.

New adult host records for three Buprestidae (Coleoptera) rarely encountered in the United States and significant extension of the known geographic range of \u3ci\u3eAgrilus pilosicollis\u3c/i\u3e Fisher

https://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=2365&amp;context=insectamundi

New adult host records for three Buprestidae (Coleoptera) rarely encountered in the United States and significant extension of the known geographic range of \u3ci\u3eAgrilus pilosicollis\u3c/i\u3e Fisher

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