Heterhelus (Boreades) solani ( Heer, 1841 )

Hisamatsu, Sadatomo, 2011, A review of the Japanese Kateretidae fauna (Coleoptera: Cucujoidea), Acta Entomologica Musei Nationalis Pragae 51 (2), pp. 551-585 : 569-572

Heterhelus (Boreades) solani ( Heer, 1841)

( Figs. 2C , 8 )

Cateretes solani Heer, 1841: 412 . Type locality: Bern, auf dem Chasseral, Genf [ Switzerland].

Amartus (Heterhelus) solani: REITTER (1875: 3) [note].

Heterhelus solani: GANGLBAUER (1899: 452) [redescription]; REITTER (1911: 13) [in key]; GROUVELLE (1913: 15) [catalogue]; REITTER (1919: 7) [in key]; SPORNRAFT (1967: 23) [in key]; AUDISIO (1980: 21) [in key]; AUDISIO (1993: 816) [redescription, note]; KIREJTSHUK (1992: 214) [in key]; JELÍNEK & AUDISIO (2007: 458) [catalogue].

Boreades solani: AUDISIO et al. (2000: 333) [list].

Heterhelus (Boreades) solani : S-T. HISAMATSU & LEE (2007: 384) [list].

Brachypterus rubiginosus Erichson, 1843:232 . Type locality: Cassel [= Kassel, Germany]. Synonymized by GANGL- BAUER (1899: 452) with Cateretes solani Heer.

Brachypterus rubiginosus: ERICHSON (1845: 133) [redescription, note]; STURM (1844: tab. CCXCI, fig. d, D) [figure]; STURM (1845: 30) [redescription, note]; REDTENBACHER (1849: 775) [redescription].

Cercus rubiginosus: GEMMINGER & HAROLD (1868: 803) [catalogue].

Cercus (Heterhelus) rubiginosus: MURRAY (1864: 234) [redescription, note]; MARSEUL (1885: 25) [redescription].

Cercus rhenanus Bach, 1866: 480 . Type locality: Germania. Synonymized by MURRAY (1864: 234) with Brachypterus rubiginosus Erichson.

Cercus spiraeae Märkel, 1857: 177 . Type locality: Germany. Synonymized by MURRAY (1864: 234) with Brachypterus rubiginosus Erichson.

Material examined. SLOVAKIA: 2 JJ 2 ♀♀: Vys.[oké] Tatry Mts., Javorina (6786), 5.viii.1986, J. Jelínek leg.

JAPAN: HOKKAIDO: 1 J, Piuka, Teshio , 18.vii.1952, T. Shirôzu leg. ; 1 J, Piuka, Teshio , 21.vii.1952, T. Shirôzu leg. ; 1J, Jyôzankei , 7.viii.1952, S. Hisamatsu leg. ; 2JJ 1♀, Maruyama, Sapporo , 18.vii.1956, M. Miyatake leg. ; 2

JJ, Doyako, 8.vii.1958, F. Takechi leg.; 5 JJ 2♀♀, Oshidomari, Rishiri Is., 10.vii.1958, M. Miyatake leg.; 40 JJ

53 ♀♀, Kawayu, 22.vii.1970, M. Sakai leg.; 17 JJ 7 ♀♀, Sôun-kyo, 17.vii.1970, M. Sakai leg. 1 J, Hitsujigaoka,

Sapporo, 4.v.1995, K.Ishida leg., from the flower of Magnolia kobus Dc.var borealis Sarg. AOMORI: 1J 1♀, Towada,

Hiraka-chô, 16.vii.1957, K. Shimoyama leg.; 1 J, Kuzukawa, Hiraka-chô, 5.vii.1957, K. Shimoyama leg. ( EUM).

Diagnosis. Body coloration variable, reddish brown, except dark brownish head and/or pronotum. Antennal club distinctly 3-segmented. Pronotum ( Fig. 8F ) strongly convex; lateral margins uniformly arcuate. Parameres ( Fig. 8A ) of male genitalia abruptly, medially curved at mid-length. Median lobe ( Fig. 8C ) sharply acuminate at apex in lateral aspect. Ovipositor ( Fig. 8D ) with short styli.

Redescription. Length 1.7–2.7 mm.

Male. Body ( Fig. 2C ) oval, convex, shining; disc densely covered with whitish or yellowish setae. Coloration variable, reddish brown, except dark brownish head (sometimes also pronotum dark brown).

Head densely punctate, punctures smaller than eye-facet, separated by ≤ 1 diameter; interspaces finely reticulate. Front margin of clypeus with slightly medial arcuate emargination. Labrum moderately arcuate. Mandibles moderately bent inward. Antennae ( Fig. 8E ) about as wide as HW, 1.00–1.03 times longer than HW (n = 7); antennal club distinctly 3-segmented; approximate ratio of each segment (n = 1) is 2.18: 1.53: 1.47: 1.18: 1.18: 1.06: 1.06: 1.00: 1.71: 1.65: 2.59.

Pronotum ( Fig. 8F ) strongly convex, 1.36–1.44 times as wide as long (n = 7); sides narrowly explanate, slightly serrate, uniformly arcuate, widest at middle; anterior angles slightly prominent; posterior angles obtusely angulate; anterior margin unbordered; basal margin distinctly bordered; punctures on disc slightly smaller than those on head; interspaces finely reticulate.

Elytra conjointly 1.00–1.12 times as long as wide (n = 3), 1.67–1.85 times as long as pronotum (n = 3), subparallel-sided, widest at mid-length; punctures on disc larger than those on pronotum, separated by <1 diameter; interspaces smooth. Abdominal tergite VI partially obscured by elytra. Abdominal tergite VII fully exposed, apex arcuately emarginate. Abdominal tergite VIII externally visible.

Prosternum (excluding prosternal process) 0.49 times as long as mesoventrite (n = 1), 0.46 times as long as metaventrite (n = 1); prosternal process subparallel-sided, apex rounded. Mesoventrite depressed below the level of the metaventrite. Metaventrite convex, strongly shining, metathoracic discrimen in basal 3/4. Inter-mesocoxal distance separated by 1.47 times width of inter-procoxal distance. Inter-metacoxal distance separated by 2.80 times width of inter-procoxal distance. Abdominal sternites shining; approximate ratio of length of abdominal sternites III–VII (n = 1) is 2.63: 1.00: 1.00: 1.13: 1.56. Legs flattened; protibiae rather short and widened, shorter than HW; tarsal claws simple.

Male genitalia with median lobe ( Fig. 8C ) sharply acuminate at apex in lateral aspect; parameres ( Fig. 8A ) abruptly, medially curved at mid-length; apical margin of interparameral lobe projected at middle.

Female. Apical margin of abdominal tergite VII rounded. Ovipositor ( Fig. 8D ) with rather short styli.

Bionomics. The ecology of this species is similar to H. scutellaris , and both species may be found in sympatry throughout most of Europe ( AUDISIO 1993). This species only occurs on Hokkaido and northern areas of Honshû in Japan.

Distribution. Japan (Hokkaido, Honshû); Europe, Russia (East Siberia, Far East), Mongolia and South Korea ( HISAMATSU 1985, JELÍNEK & AUDISIO 2007).

Figures

Fig. 2. Habitus and labels of Kateretidae spp. A–B – Heterhelus (Heterhelus) morio (Reitter, 1878): A – lectotype, male; B – ditto, labels; C – Heterhelus (Boreades) solani (Heer, 1841), male (Hokkaido); D – Sibirhelus corpulentus (Reitter, 1900), male (Iwate Pref.); E – Brachypterus urticae (Fabricius, 1792), male (Hokkaido); F–G – Brachypterolus shimoyamai Hisamatsu, 1985: F – holotype, male; G – ditto, labels. Scale bars = 1.0 mm.

Fig. 8. Heterhelus (Boreades) solani (Heer, 1841). A – tegmen (ventral view); B – median lobe (ventral view); C – median lobe (lateral view); D – ovipositor; E – right antenna, male; F – pronotum; G – left maxillary palpus.A–G = Hokkaido, Kawayu.