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Lepidoptera, Tischeriidae) from the Caucasus

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Lepidoptera, Tischeriidae) from the Caucasus See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/340278361 Diagnostics based on the juxta morphology reveals a new species of Tischeria Zeller (Lepidoptera, Tischeriidae) from the Caucasus Article in Biologija · March 2020 DOI: 10.6001/biologija.v66i1.4186 CITATION READS 1 113 3 authors, including: Jonas Rimantas Stonis Andrius Remeikis Nature Research Centre Nature Research Centre 172 PUBLICATIONS 1,112 CITATIONS 72 PUBLICATIONS 361 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: Diagnostics View project Urticaceae systematics View project All content following this page was uploaded by Jonas Rimantas Stonis on 04 April 2020. The user has requested enhancement of the downloaded file. BIOLOGIJA. 2020. Vol. 66. No. 1. P. 10–20 © Lietuvos mokslų akademija, 2020 Diagnostics based on the juxta morphology reveals a new species of Tischeria Zeller (Lepidoptera, Tischeriidae) from the Caucasus Adam Klasiński1, We describe a new species, Tischeria caucasica Klasiński & Stonis, sp. nov., a trumpet moth (Tischeridae) recently discovered from Jonas Rimantas Stonis2, Georgia, the Caucasus. We briefly discuss the diagnostics of T. caucasica, an outstanding new species possessing an extremely 2 Andrius Remeikis long and distally bifurcated juxta. The new species is illustrated with photographs of the adults, male and female genitalia, and 1 Częstochowskie Koło Entomologiczne the type locality. przy Muzeum Częstochowskim, Aleja NMP 47, 42-217, Częstochowa, Poland Keywords: leaf miners, new species, Tischeria caucasica, trumpet moths 2 Institute of Ecology, Nature Research Centre and Baltic-American Biotaxonomy Institute, Akademijos St. 2, Vilnius 08412, Lithuania INTRODUCTION Puplesis, Diškus 2003 and the most recent papers by Lees, Stonis, 2007; Stonis, Diškus, 2007, 2008; Tischeriidae, or trumpet moths, represent a small Stonis et al., 2008, 2016, 2017, 2018, 2019; Mey, but important family of leaf-mining Lepidoptera. 2010; Diškus et al., 2014; Diškus, Stonis, 2015; and Trumpet moths are almost cosmopolitan: vari- Xu et al., 2017, 2018. ous species are known from all continents except In May 2019, the first author, Adam Klasiński, Australia and Antarctica. They are represented in conducted a fieldwork in central Georgia (Figs. very diverse terrestrial ecosystems, from the trop- 1–5), Kartli, near Kura River (Fig. 4). The land- ics to the temperate regions; however, the family scape was rather denuded, semiarid, steppe-like is more abundant in subtropical and tropical ar- (Figs. 2, 5), currently used mostly as pastures, eas (Stonis et al., 2018). For morphological and where bushes or young trees were scanty and biological characterization of Tischerridae, we occurring mostly in ravines (Fig. 3). During recommend the monographs by Braun 1972 and the fieldwork, a series of tischeriids were collect- ed among many other moths. Externally, the col- * Corresponding author. Email: [email protected] lected specimens resembled Tischeria ekebladella Diagnostics based on the juxta morphology reveals a new species of Tischeria Zeller... 11 Figs. 1–5. Type locality and habitat of Tischeria caucasica Klasiński & Stonis, sp. nov. 1, 2, 4, 5 – type local- ity, Georgia, Kartli, Gomi, 41°54’19.2”N, 44°22’50.7”E; 3 – habitat, a stand of bushes and young trees occur- ring in a ravine, elevation 570–710 m 12 Adam Klasiński, Jonas Rimantas Stonis, Andrius Remeikis (Bjerkander, 1795), a species widely distrib- In addition, two male paratypes of Tischeria uted in Europe and reported from the Cauca- caucasica will be deposited in the collection of sus (Diškus, Puplesis, 2003). However, our de- the Muzeum Częstochowskie, Częstochowa, tail examination of the male genitalia showed Poland (MUZC) and other two in the private that the juxta strongly differed from those of collection of Adam Klasiński, Częstochowa, Tischeria ekebladella or another similar spe- ul. Łukasińskiego 88/8, Poland (PCAK). cies, T. ekebladoides Puplesis & Diškus, 2003 Collecting methods and protocols for species (Fig. 6). identification and description are outlined in Below we name and describe this new spe- Puplesis, Diškus (2003) and Stonis et al. (2014). cies, Tischeria caucasica sp. nov., characterized Permanent preparations on microscope slides mostly by a unique juxta in the male genitalia were photographed and studied with a Leica as well as some unique but not so conspicuous DM2500 microscope and Leica DFC420 digital characters of the female genitalia. We provide camera. Adults were photographed using a Lei- a detail documentation of genital structures ca S6D stereoscopic microscope with a Leica of the male genitalia as well as photographs of DFC290 digital camera attached. the adults and the female genitalia. DESCRIPTION OF TISCHERIA CAUCA- MATERIALS AND METHODS SICA KLASIŃKI & STONIS, SP. N OV. The description of the new species is based on Type material. Holotype: ♂, GEORGIA, Kart- the material collected by Adam Klasiński in li, Gomi, 41°54’19.2”N, 44°22’50.7”E, elevation Georgia in 2019. The majority of the type ma- 570–710 m, at light, 5–21.v.2019, leg. Adam terial, including the holotype and single avail- Klasiński, genitalia slide no. RA1080 (ZIN). able female, will be deposited in the collection Paratypes: 2 ♂, 1 ♀, same label data as holo- of the Zoological Institute of the Russian Acad- type, genitalia slide nos. AK5144♂, RA1081♂, emy of Sciences, St. Petersburg, Russia (ZIN). RA1082♀ (ZIN); 2 ♂, same label data as Fig. 6. Diagnostics of Tischeria caucasica Klasiński & Stonis, sp. nov. based on the juxta in the male genitalia (a comparison with the most resembling species, T. ekebladella and T. ekebladoides) Diagnostics based on the juxta morphology reveals a new species of Tischeria Zeller... 13 holotype, genitalia slide no. AK5143 (PCAK); basally, dark grey distally; underside of abdo- 2 ♂, same label data as holotype (MUZC). men predominantly dark yellow-brown; genital Diagnosis. Externally, Tischeria caucasi- plates ochreous cream; anal tufts indistinctive ca sp. nov. can be confused with many other uni- (or partially rubbed), ochreous cream. form Tischeria species, including T. ekebladella Female (Figs. 13, 14). Forewing length (Bjerkander, 1795) and T. ekebladoides Puple- about 4.5 mm; wingspan about 9.5 mm (n = 1). sis & Diškus. In the male genitalia, the unique, Abdomen without anal tufts; otherwise, similar very long and distally bifurcated juxta distin- to male. guishes the new species from all known con- Male genitalia (Figs. 15–31). Capsule sig- generic species, including the most similar nificantly longer (1395–1570 μm) than wide T. ekebladella and T. ekebladoides (Fig. 6). In (755–780 μm). Uncus (Fig. 16) with two large the female genitalia, this species also differs lateral lobes. Socii membranous (Fig. 17). from all congeneric species, including the most Valva (Figs. 18, 29, 30) 940–1035 μm long, resembling T. ekebladella, T. sichotensis Ermo- narrowing distally; transtilla absent. Juxta laev, 1986, and T. ekebladoides by the combi- (Figs. 15, 18, 21–25, 27, 28, 31) comprised of nation of a weakly chitinized anterior margin two shorter (260–360 μm) and two very long of antrum (Fig. 32) with unique membranous (980–1070 μm) horn-like processes (Fig. 6); part (Fig. 35), and a wide base of the shortest the latter bifurcated distally and bent basally prela (Fig. 33); however, these characters, in (see Figs. 21–25). Vinculum with a triangu- comparison to the male genitalia, are far less larly-shaped, slender ventral plate (Figs. 15, conspicuous and less useful for species differ- 16). Phallus (Figs. 19, 20, 26) 1190–1215 μm entiation. long, basally 80–150 μm wide, but broadly Male (Figs. 7–12). Forewing length 4.2– bifurcated in apical half (Fig. 20), with weakly 4.8 mm; wingspan 9.1–10.1 mm (n = 3). Head: chitinized plates on the top of each branch palpi cream; frons golden cream, very glossy; (Fig. 19). frontal tuft (Figs. 8–10) overlapping the frons, Female genitalia (Figs. 32–35). Total length comprised of long, lamellar, yellowish ochre about 2700 μm. Antrum elaborated (Fig. 32) or ochre cream scales; collar (Fig. 8) ochre but little chitinized anteriorly. The shortest cream to yellowish ochre, comprised of lamel- process of prela with a wide, plate-like base lar scales; antenna much longer than one half (Fig. 33). Ductus bursae with spines. Corpus the length of forewing; flagellum ochre cream bursae heavily folded but without signum or on upper side, dark brown on underside. Tho- pectinations (Fig. 34). Ductus spermathecae rax ochre cream; tegula ochre cream to yellow- with about 4–5 large coils. ish ochre, proximally densely covered with grey Bionomics (Figs. 2–5). Host plant is un- scales. Forewing (Figs. 11, 12) densely covered known, probably Quercus sp. as the closely with yellowish ochre to ochre cream scales, api- related Tischeria ekebladella is an oak-feeding cally with some darker, ochre scales; fringe yel- species (also see Discussion). Larva and leaf lowish ochre; fringe line absent; underside of mine are unknown; however, as in the case of forewing densely covered with dark grey scales. all other Tischeria species, T. caucasica is sup- Hindwing dark grey on upper side and under- posed to be a leaf-mining insect. Adults were side, however, may look greyish cream depend- collected at light in May. Otherwise, biology is ing from the angle of view; fringe grey to ochre unknown. cream depending from the angle
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