Liophilydrodes puncticollis ( Nakane et Sawada, 1956 )

Shavrin, A. V. & Makarov, K. V., 2019, Contribution to the knowledge of the fauna of rove beetles of the subfamily Omaliinae MacLeay, 1825 (Coleoptera: Staphylinidae) of Kunashir Island, Kurile Islands, Russian Entomological Journal 28 (1), pp. 36-53 : 43-45

Liophilydrodes puncticollis ( Nakane et Sawada, 1956)

Figs 6 , 9–12 , 21–26 ; Map 9 .

Philydrodes (Lioplax) puncticollis Nakane et Sawada, 1956: 53 (type locality: Japan, Hokkaido, Nukabira); Shibata, 1965: 317, 1976: 122; Shibata et al., 2013: 75; Phylidrodes [sic!] (Lioplax) puncticollis : Watanabe, Shibata, 1965: 317; Philydrodes puncticollis : Watanabe, 1985: 278; Naomi, 1989: 261; Liophilydrodes puncticollis : Watanabe, 1990: 306; Zerche, 2003: 289

MATERIAL. 3 ♂♂, 2 ♀♀: about 2.5 km NW Nelyudimy Cape , 04.08.2013, K.V. Makarov, Yu.N. Sundukov leg. ( CS, MSPU) ; 1 ♂, 1 ♂: brook, about 1 km SE Dokuchayevo , 01.08.2013, K.V. Makarov leg. ( CS) ; 1 ♂: Dalniy Stream , 09.08.2013, Yu.N. Sundukov leg. ( CS) ; 1 ♀: Dokuchayev Ridge , stream N from Vodopadnoye Lake, 560m, 44°27´14´´N 146°6´13´´E, 07.08.2017, K.V. Makarov, Yu.N. Sundukov leg. ( MSPU) ; 1 ♂, 1 ♀: same Ridge , stream S from Vodopadnoye Lake, 560, 44°27´1´´N 146°6´4´´E, 06.08.2017, Yu.N. Sundukov leg. ( CS, MSPU) ; 2 ♂♂: same ridge, stream W from Vodopadnoye Lake , 560m, 44°27’7´´N 146°6´14´´E, 04.08.2017, K.V. Makarov, Yu.N. Sundukov leg. ( CS) ; 2 ♀♀: same Ridge , environs of Vodopadnoye Lake, 500m, 44°27´6´´N 146°6´5´´E, 04– 07.08.2017, K.V. Makarov leg. ( MSPU) ; 2 ♀♀: same Ridge , 1.5 km N Glukhoy Stream,0–300, 44°27´04´´N 146°4´40´´E, 03.08.2017, Yu.N. Sundukov leg. ( CS) ; 1 ♂: same Ridge, E slope, Williams Lake , 535m, 23.09.2017, Yu.N. Sundukov leg. ( CS) ; 1 ♂: upper 04– 05.07.2003, I.V. Melnik leg. ( CS) ; 2 ♀♀: Shikotan Island , Tserkovnaya Bay, 12– 15.08.2016, Yu.N. Sundukov leg. ( CS) .

DISTRIBUTION. Russia: Khabarovsk Territory, Sakhalin, Kurile Islands (Iturup, Kunashir: Map 9 , Shikotan). — Japan (Hokkaido) .

BIONOMICS. This is a very common species in Kunashir Island. Specimens were collected on stony and occasionally on sandy banks of streams and rivers, and sometimes near thermal zones ( Figs 9–12 ). It was found in a stony shore in the caldera of Goryacheye Lake ( Fig. 9 ).

REMARKS. Liophilydrodes puncticollis has a relatively variably shaped pronotum with fine to moderately coarse punctation, indistinct to distinct microsculpture between punctures both on head and pronotum, and markedly transverse or somewhat elongate elytra. Habitus as in Fig. 6 . The width and shape of the apical portion of the median lobe and parameres are subject to little variation ( Figs 21–26 ). The internal sac of the genus Liophilydrodes is here presented for the first time: L. puncticollis has a relatively complex and variable shape of it (compare Figs 22, 24–26 and Figs 21, 23 ). Liophilydrodes puncticollis is recorded from Kunashir and Shikotan islands, and from the mainland Asia ( Russia, Khabarovsk Territory) for the first time.

In general, the genus Liophilydrodes is in need of a taxonomic revision and comparative morphological study of the variability of the body and aedeagus. This could eventually lead to new synonymies of some names from Japan, which are apparently more widely distributed. It is worth noting that L. subtilis iturupensis , described based on one female from Iturup Island [ Lafer, 2004], in some details of the body differs from two syntypes of Anthophagus subtilis Sharp, 1889 , deposited in BMNH and known to the senior author. However, a study of additional material from the type locality and other adjacent islands is required for the clarification of its taxonomic status.

Figures

Figs 1–8. Habitus of Omaliinae: 1 — Acidota daisetsuzana Watanabe; 2 — Brathinus oculatus Lewis; 3 — Geodromicus nipponensis (Watanabe); 4 — Lesteva nipponica Watanabe; 5 — L. plagiata Sharp; 6 — Liophilydrodes puncticollis (Nakane et Sawada); 7 — Archaeoboreaphilus miyamorii (Watanabe); 8 — Acrolocha miyamorii Watanabe. Scale bar: 1.0 mm. Рис. 1–8. ВнеШний вид Omaliinae: 1 — Acidota daisetsuzana Watanabe; 2 — Brathinus oculatus Lewis; 3 — Geodromicus nipponensis (Watanabe); 4 — Lesteva nipponica Watanabe; 5 — L. plagiata Sharp; 6 — Liophilydrodes puncticollis (Nakane et Sawada); 7 — Archaeoboreaphilus miyamorii (Watanabe); 8 — Acrolocha miyamorii Watanabe. МасШтаб: 1.0 мм.

Figs 9–12. Habitats of Omaliinae on Kunashir Island: 9 — shore of Goryachee Lake, calder of Golovnin Volcano (Brathinus oculatus, Liophilydrodes puncticollis); 10 — middle flow of Zolotaya River (Geodromicus iburinus, L. puncticollis); 11 — canyon about 2.5 km NW Nelyudimyi Cape (L. puncticollis); 12 — stream ab. 1 km SE Dokuchaevo (Archaeoboreaphilus miyamorii, L. puncticollis). Photo by K.V.Makarov. Рис. 9–12. МестообитаниЯ Omaliinae на острове КунаШир: 9 — берег оЗ. ГорЯчее, кальдера вулкана Головнина (Brathinus oculatus, Liophilydrodes puncticollis); 10 — среднее течение р. ЗолотаЯ (Geodromicus iburinus, L. puncticollis); 11 — уЩелье 2,5 км СЗ мыса Нелюдимый (L. puncticollis); 12 — ручей в 1 км от Докучаево (Archaeoboreaphilus miyamorii, L. puncticollis). Фото К.В. Макарова.

Figs 21–26. Aedeagus of Liophilydrodes puncticollis (Nakane et Sawada), ventral view: 21 — Kunashir Island, Filatov River; 22 — Kunashir Island, Golovnin River; 23 — Kunashir Island, Nelyudimyi Cape; 24 — Sakhalin Island, Peskovka River; 25 — Sakhalin Island, Plastunka River; 26 (with sketched basal pieces of aedeagus) — Khabarovsk Territory, Sikhote-Alin Mt. range. Scale bar: 0.1 mm. Рис. 21–26. Эдеагус Liophilydrodes puncticollis (Nakane et Sawada), сниЗу: 21 — о-в КунаШир, р. Филатова; 22 — о-в КунаШир, р. Головнина; 23 — о-в КунаШир, мыс Нелюдимый; 24 — о-в Сахалин, р. Песковка; 25 — о-в Сахалин, р. Пластунка; 26 (с нарисованными баЗальными частЯми Эдеагуса) — Хабаровский край, хр. СихотЭ-Алинь. МасШтаб: 0.1 мм.

Maps 8–13. Distribution of Omaliinae in Kunashir Island: 8 — Lesteva plagiata Sharp, 1889; 9 — Liophilydrodes puncticollis (Nakane et Sawada, 1956); 10 — Mannerheimia yasudai Watanabe, 1990; 11 — Archaeoboreaphilus miyamorii (Watanabe, 1988); 12 — Eudectus rufulus Weise, 1877; 13 — Acrolocha miyamorii Watanabe, 1990. Карты 8–13. Распространение Omaliinae на острове КунаШир: 8 — Lesteva plagiata Sharp, 1889; 9 — Liophilydrodes puncticollis (Nakane et Sawada, 1956); 10 — Mannerheimia yasudai Watanabe, 1990; 11 — Archaeoboreaphilus miyamorii (Watanabe, 1988); 12 — Eudectus rufulus Weise, 1877; 13 — Acrolocha miyamorii Watanabe, 1990.