Xenoglena Reitter, 1876

Kolibac, Jiri, 2013, Trogossitidae: A review of the beetle family, with a catalogue and keys, ZooKeys 366, pp. 1-194 : 36-37

Genus Xenoglena Reitter, 1876 Fig. 5 ; Map 4

Xenoglena Reitter, E. 1876: 40.

Type species.

Xenoglena deyrollei Reitter, 1876 [by monotypy]

Léveillé, A. 1910: 23. Kolibáč, J. 2005: 85 (redescription). Kolibáč, J. 2006: 111 (phylogeny). Kolibáč, J. 2007a: 364. Nikitsky, N. B. 1992: 81

Remarks.

Outer habitus resembles the jewel beetles ( Buprestidae ), especially those of the genus Chrysobothris . Anacypta asahinai Kono, 1938 was combined with Xenoglena by Kolibáč (2009). The combination is in accord with the opinion of Nikitsky (1992) and also my own independent study of the species. Nikitsky (l.c.) moreover suggested its synonymization with Xenoglena quadrisignata .

Description.

Body size: about 7.0-10.0 mm. Body shape elongate. Gular sutures narrow, subparallel at apex. Frontoclypeal suture absent. Frons: longitudinal groove or depression absent. Cranium ventrally: tufts of long setae at sides absent. Submentum: ctenidium present. Antennal groove present. Eyes: size large, dorsal. Eyes number: four. Epicranial acumination absent. Lacinial hooks absent. Galea: shape clavate. Galea: ciliate setae absent. Mediostipes-Lacinia fused together. Palpifer: outer edge even. Mandibular apical teeth number: two, vertically situated. Mola reduced but present. Penicillus (at base) long setae. Pubescence above mola or cutting edge absent. Ventral furrow absent. Basal notch shallow or absent. Labrum-Cranium not fused. Epipharyngial sclerite present. Lateral tormal process: projection curved downwards, processes not connected ( Airora ). Ligula: ciliate setae absent. Ligula rigid, not retroflexed, weakly emarginate. Hypopharyngeal sclerite absent. Antenna 11-segmented. Antennal club asymmetrical, sensorial fields present. Front coxal cavities externally closed, internally open. Pronotum transverse. Prepectus absent. Middle coxal cavities open. Elytra: long hairs absent. Epipleuron thin. Elytral interlocking mechanism present, carinae reduced. Elytral punctation regular, scales present. Wing: radial cell oblong (or reduced), wedge cell absent, cross vein MP3-4 present, cross vein AA1+2-3+4 absent. Front tibiae: spines along side reduced. Hooked spur present. Claws: denticle absent. Parasternites number along ventrites III-VII: one. Spiculum gastrale absent. Coxitae undivided.

Biology.

Predatory. Adults dwell on fallen trees and dry branches, hunting for xylophagous insects. They fly and run at great speed and appear very like some jewel beetles in body shape.

Distribution.

Indonesia, Malayan Peninsula, Russian Far East, Japan, northern China. A large body of material of perhaps-undescribed species is known to me from northern Laos.

Species:

Xenoglena asahinai Kono, 1938: 227 ( Acrops ); Japan (varA)

Nakane, T. et al. 1963: 181 ( Acrops ). Kolibáč, J. 2009: 128 (comb. with Xenoglena )

Note: maybe synonym of Xenoglena quadrisignata ; opinion by Nikitsky 1992: 81.

Xenoglena chrysobothroides Léveillé, 1897; Malacca (AL)

Léveillé, A. 1910: 23

Xenoglena deyrollei Reitter, 1876; Java (AL)

Léveillé, A. 1910: 23. Kolibáč, J. 2005: 87 (redescription). Reitter, E. 1876: 41

Xenoglena fryi Léveillé, 1899; Perak (AL)

Léveillé, A. 1910: 23

Xenoglena quadrisignata Mannerheim, 1852; Siberia, Mongolia, Far East, Japan, North Korea, China: Northeast Territory (varA)

Léveillé, A. 1910: 22 ( Gymnochila ). Kolibáč, J. 2005: 86 (redescription). Kolibáč, J. 2007a: 364. Nikitsky, N. B. 1992: 81. Reitter, E. 1876: 40 ( Gymnochila )

Xenoglena tetrasigma Léveillé, 1878; Malacca (AL)

Léveillé, A. 1910: 23

Xenoglena vicina Léveillé, 1897; Malacca (AL)

Léveillé, A. 1910: 23

Xenoglena yunnanensis Léveillé, 1907; China: Yunnan (AL)

Léveillé, A. 1910: 23. Kolibáč, J. 2007a: 364

Figures

Map 4. A distribution of the tribe Gymnochilini.

Figure 5. A Xenoglena sp. 1, Vietnam B Xenoglena sp. 2, Vietnam C Xenoglena quadrisignata (cf. yunnanensis) D Leperina (syn. Onyschomorpha) marmorata E Leperina decorata F Narcisa decidua G Narcisa sp., Seram H Phanodesta cribraria, " Chili " I Phanodesta sp., Juan Fernandez Isl. J Seidlitzella procera.