Orchesia (C) undulata, Kraatz, 1853

Tamutis, Vytautas, Ferenca, Romas & Pollock, Darren A., 2019, Faunistic review of Tetratomidae and Melandryidae (Coleoptera: Tenebrionoidea) in Lithuania with an annotated checklist of the species, Zootaxa 4668 (2), pp. 183-206 : 193

O. (C.) undulata Kraatz, 1853

New records. Akm: Kamanų rezervatas, 10 X 1984, 10 X 2002, leg. V. M., 1♀, 1♀, KZM; Purvių rezervatas, 23 VI 1993, leg. V. M., 1³, KZM ; Alyt : Vidzgirio Botaninis draustinis, 11 VII 2018, leg. R. F. 1♀, KZM ; Kau : Dubravos miškas, 27 IV 2000, leg. P. Z., 1³, KZM ; Kazliškiai , 09 V 2002, winter wheat crops, caught using sweep net, leg. V. T., 1³, KZM ; Šak : Tervydoniai, 12 V 2010, 6 VI 2010, 22 V 2014, 25 V 2014, 14 V 2017, 13 X 2018, leg. R. F., 1♀, (4³ 2♀), 1³, 2³, 1♀ (4³ 3♀), KZM .

Earlier records. This species was found in Kaunas ( Ferenca et al. 2011; Ivinskis et al. 2014) (KZM), Neringa, Kaišiadorys, and Vilnius districts ( Ivinskis et al. 2014, 2015).

General distribution. This species is widely distributed in Europe, but still is not found in Portugal, Greece and northern part of European Russia ( Nikitsky & Pollock 2008; Konvička 2012).

Notes. Orchesia undulata is a relatively recent discovery in Lithuania and insufficiently known. The larvae develop in rotten wood of deciduous trees ( Burakowski et al. 1987) generally infected by Phlebia radiata and Merulius tremellosus ( Nikitsky et al. 1996; Nikitsky 2002).

Subgenus Orchesia Latreille, 1807

**O. (O.) fusiformis Solsky, 1871 ; syn. acicularis Reitter, 1886

New records. Kaun: Dubravos miškas, 15 V 2000, leg. P. Z., 1♀, KZM; Jiesios kraštovaizdžio draustinis, 28 VIII 2006, leg. R. F., 1♀ ( Figs 4 a–d), KZM .

Earlier records. None.

General distribution. This species exhibits a discontinuous distribution in Europe, and has been recorded from Siberia, Kazachstan, Mongolia, China and Korea ( Nikitsky & Pollock 2008).

Notes. Despite the wide distribution range of this species, its particular occurrence in the regions is poorly known, especially in European countries where this species is often confused with the morphologically similar O. micans . Both O. fusiformis and O. micans are European representatives of Orchesia s. str. subgenus, which are characterized by structure of the antennae (with distinctly wider three last segments) and eyes narrowly separated ( Kaszab 1969). However, O. fusiformis has a distinctly narrower pronotum and longer last segment of maxillary palps than does O. micans ( Nikitsky 1992) . We have recognised these differences among specimens of Orchesia collected in Lithuania ( Figs 4 a, b, e, f ). Additionally, we found that females of these species could be easily recognised by the shape of the fifth abdominal tergite ( Figs 4 c, g ) and structures of genitalia, especially by the shape of spicule of the seventh (last) sternite ( Figs 4 d, h ). Orchesia fusiformis is considered as common or not rare in Far East ( Nikitsky 1992; Gusakov 2009) and European Russia ( Nikitsky et al. 1996), while its occurrence in some central European countries is treated as very rare ( Kaszab 1969; Kubisz et al. 2014; Konvička 2017). The larvae of this species were collected on fruiting bodies of Inonotus radiatus , Lenzites betulinus , Trametes hirsuta , T. ochracea , T. pubescens , T. versicolor ( Nikitsky et al. 1996; Nikitsky & Schigel 2004), and T. suaveolens (Konvička 2017) . Several adults of the species were trapped using flight interception traps established near stumps infected by Fomitopsis pinicola and Fomes fomentarius in Estonia ( Süda 2016). This is the first record of the species in Lithuania.

Figures

FIGURE 4. a–d—Orhesia fusiformis, female (KZM); e–h—Orchesia micans, female (KZM): a, e—dorsal habitus; b, f—three last segments of maxillary palpus; c, g—fifth abdominal tergites (dorsal view, flattened); d, h—genital structures joined with sixth and seventh abdominal segments. Scale bar = 1 mm (Figs. a, e); 0.5 mm (Figs. b, c, d, f, g, h).