Euconnus (Cladoconnus) nakahamai Hoshina & Miyata, 2018

Jałoszyński, Paweł, 2019, The first Korean species of Euconnus (Cladoconnus), with a synopsis of the E. ussuriensis species group (Coleoptera, Staphylinidae, Scydmaeninae), Zootaxa 4615 (3), pp. 481-488 : 483-484

Euconnus (Cladoconnus) nakahamai Hoshina & Miyata

( Figs 3–4 , 14–21, 26 )

Euconnus (Cladoconnus) nakahamai Hoshina & Miyata, 2018: 296 . Type material studied. Holotype: ♂ ( JAPAN, SHIKOKU, KOCHI PREF.): “Japan, Shikoku / Mt. Ôzareyama, / Ôkawa Village, Kochi Pref.” [white, handwritten], label with the same data repeated in Japanese characters [white, printed], “ 27.V.2007, / T. Miyata & T. Miyata leg.” [white, printed], “ Euconnus / ( Cladoconnus ) / nakahamai Hoshi- na et. al.” [white, printed], “ Holotype ” [red, printed] (MNHAH).

Additional material. 1 ♂, Japan, Shikoku, Ehime Pref., Shiraishi-goya, Mt. Ishizuchi , 8.VI.1959, “in litter”, M. Sakai leg. ; 1 ♂, same data except for 8.VI.1997 ; 1 ♀, same data but 7.VI.1997. Specimens in EUMJ and cPJ .

Emended diagnosis. Endophallus with one elongate, pointed and slightly undulating sclerite shorter than half length of median lobe.

Distribution ( Fig. 26 ). Japan, Shikoku.

Remarks. This species shows a small, but noticeable variability in the shape of the endophallic sclerite ( Figs 14, 16, 18 show aedeagi of three specimens). In the holotype ( Figs 14–15 ), the ventral apical plate protrudes distad beyond the apex of the dorsal plate, but this structure is movable and in natural position (in repose) it tightly adheres to the dorsal plate and is positioned as that in Figs 16–21 .

In the original description, the authorship of E. nakahamai is cited as “Hoshina et Miyata”. The authorship of the paper is Hideto Hoshina, Takasuke Miyata and Toshie Miyata, and therefore, the authorship of the species name remains unclear. According to H. Hoshina (email to PJ dated 27.04.2019), the authorship of E. nakahamai is Hoshina & Takasuke Miyata.

Figures

FIGURE 26. Distribution of Far Eastern Cladoconnus species.

FIGURES 1–5. Dorsal habitus of Far Eastern Cladoconnus species. Euconnus ussuriensis Kurbatov, male (1); E. matsuae Hoshina, male (2); E. nakahamai Hoshina & Miyata, male (3) and female (4); E. rudimentalis n. sp., male (5).

FIGURES 14–21. Aedeagi of Far Eastern Cladoconnus species in ventral (14, 16, 18, 20) and lateral (15, 17, 19, 21) views. Examples of endophallic variability within E. nakahamai Hoshina & Miyata: holotype (14–15), and two non-type specimens (16–17 and 18–21).