Two New Genera and Species of Tiger Beetles from Baltic Amber (Coleoptera: Carabidae: Cicindelinae) Jürgen Wiesner Wolfsburg, Germany, [email protected]
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University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida 9-29-2017 Two new genera and species of tiger beetles from Baltic amber (Coleoptera: Carabidae: Cicindelinae) Jürgen Wiesner Wolfsburg, Germany, [email protected] Kipling Will University of California - Berkeley, [email protected] Joachim Schmidt University of Rostock, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/insectamundi Part of the Ecology and Evolutionary Biology Commons, and the Entomology Commons Wiesner, Jürgen; Will, Kipling; and Schmidt, Joachim, "Two new genera and species of tiger beetles from Baltic amber (Coleoptera: Carabidae: Cicindelinae)" (2017). Insecta Mundi. 1079. http://digitalcommons.unl.edu/insectamundi/1079 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. INSECTA MUNDI A Journal of World Insect Systematics 0577 Two new genera and species of tiger beetles from Baltic amber (Coleoptera: Carabidae: Cicindelinae) Jürgen Wiesner Dresdener Ring 11 D-38444 Wolfsburg, Germany Kipling Will Essig Museum of Entomology 1101 Valley Life Sciences Building, #4780 University of California, Berkeley Berkeley, CA 94720-4780 Joachim Schmidt University of Rostock, Institute of Biosciences General and Systematic Zoology Universitätsplatz 2 D-18055 Rostock, Germany Date of Issue: September 29, 2017 CENTER FOR SYSTEMATIC ENTOMOLOGY, INC., Gainesville, FL Jürgen Wiesner, Kipling Will, and Joachim Schmidt Two new genera and species of tiger beetles from Baltic amber (Coleoptera: Carabidae: Cicindelinae) Insecta Mundi 0577: 1–14 ZooBank Registered: urn:lsid:zoobank.org:pub:A037505B-5609-4C4B-B755-A704E1DA37AA Published in 2017 by Center for Systematic Entomology, Inc. P. O. 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Nearns 0577: 1–14 2017 Two new genera and species of tiger beetles from Baltic amber (Coleoptera: Carabidae: Cicindelinae) Jürgen Wiesner Dresdener Ring 11 D-38444 Wolfsburg, Germany [email protected] Kipling Will Essig Museum of Entomology 1101 Valley Life Sciences Building, #4780 University of California, Berkeley Berkeley, CA 94720-4780 [email protected] Joachim Schmidt University of Rostock, Institute of Biosciences General and Systematic Zoology Universitätsplatz 2 D-18055 Rostock, Germany [email protected] Abstract. Two fossil tiger beetle species (Coleoptera, Carabidae, Cicindelinae) are described from Eocene Baltic amber using light microscopic and X-ray microscopic techniques. Both species are considered representatives of the subtribe Iresina Rivalier, 1971 due to the shared combination of character states: glabrous head, six labral and four suborbital setae, and glabrous pronotum. Palaeopronyssiformia groehni Wiesner, Will, and Schmidt, new genus, new species, is characterized by a glabrous and furrowed head with six labral setae, large eyes, presence of two supraorbital setae on each side, mandibles with two teeth of the incisor region, and a glabrous and furrowed pronotum. Palaeoiresina cassolai Wiesner, Will, and Schmidt, new genus, new species, is characterized by a unicolored, undentated labrum, mandibles with two teeth of the incisor region, glabrous head with six labral setae, two clypeal setae, two supraorbital setae on each side, and a glabrous pronotum, mesepisternum, mesepimeron, and metepisternum. The species described here represent the only known tiger beetle fossils preserved in Baltic amber. Key Words. Taxonomy, new genus, new species, X-ray microscopy Introduction Amber is the fossilized resin from ancient trees. This aromatic resin can drip from and ooze down trees, as well as fi ll internal fi ssures, trapping debris such as seeds, leaves, feathers and insects. The Baltic region of Europe is home to the largest known deposit of amber, called Baltic amber. There are fi ve published records of fossil tiger beetles preserved in Baltic amber (35–50 Mya) (Standke 2008). The fi rst was a purported specimen of Odontochila, mentioned by Brullé (1839) from the collection of the Musee d’Histoire Naturelle, Dijon. However, this specimen was subsequently studied by Horn (1907: 461) and determined to be instead an extant species, Pogonostoma chalybaeum Klug, 1835 that was preserved in recent Copal. Second was a beetle from the collection of the Museum für Naturkunde, Berlin, which was deter- mined by Horn (1906) to be either a Tetracha carolina (Linné, 1766) or a closely related species. Nearly a century thereafter, this specimen was studied in more detail (Röschmann 1999). He concluded that it was a species closely related to but not identical with T. carolina. Although he indicated he was preparing a formal redescription of it as a new species (Röschmann 1999: 208), this rediscription was never published. Unfortunately, this specimen disappeared without a trace from the collection of the 2 • INSECTA MUNDI 0577, September 2017 WIESNER ET AL. Naturkundemuseum in the late 1990s (Christian Neumann, Museum für Naturkunde, Berlin, pers. comm.). The exact identity of this fossil remains unknown. The third specimen was mentioned by Larsson (1978: 109) from the collection of the Copenhagen Museum. He wrote: “a Collyris or a form very related to this. … A study of the piece was rendered somewhat diffi cult by extensive opacities, but the general body build of the animal, together with the completely clear regions around the head and prothorax as well as front legs, mouth parts and antennae, established the determination mentioned as certain.” But this specimen was also lost without a trace in the 1970s (Lars Vilhelmsen, Natural History Museum of Denmark, Copenhagen, pers. comm.). The fourth specimen was originally identifi ed as a “Cicindelinae” by Weitschat and Wichard (1998: 157), but subsequent examination showed it not to be a member of Cicindelinae but instead a member of the Carabidae tribe Lebiini. The fi fth specimen was only included as a photograph of a Cicindelidae by Gröhn (2015: 265), and was subsequently loaned to one of us (JW). A sixth fossil specimen was acquired by the Essig Museum of Entomology (EMEC) and accessioned to the University of California, Museum of Paleontology (accession number UCMP 5068). In 2011 the specimen was sent as a loan to Fabio