Acicnemis luteomaculata Morimoto & Miyakawa, 1995

Figs 1, 2E, 6 H 1–6, 2, 19

Type material examined

(Japan: 45). Holotype. Japan: Fukuoka Prefecture: • Hiko-san, 13–14. VI. 1957, K. Morimoto, bears red label reading “ (HOLOTYPE) Acicnemis luteomaculata Morimoto et. Miyakawa, 1994 ”, ELKU, ELKU 2961 . Paratypes. Japan: Ehime Prefecture: • Hojo-shi, Mt. Takanawa, 18. V. 2003, T. Kurihara (1, KUM), JHL_AREV_420 ; Fukuoka Prefecture: • Hiko-san, 8. VI. – 13. VII. 1957, K. Morimoto (11, KUM), JHL_AREV_181 – JHL_AREV_190, JHL_ACITAI_090 (dissected male) ; • same locality, 4. VI. 1958, K. Morimoto (2, KUM), JHL_AREV_192, JHL_AREV_193; • same locality, 10. VII. 1938, Hori, Kawahara & Yasumatsu (1, KUM), JHL_AREV_194; • Mt. Wakasugi, 18. XII. 1955, K. Oshima (1, KUM), JHL_AREV_120 ; • Wakasugi, 28. VII. 1940, T. Shirozu (2, KUM), JHL_AREV_405, JHL_AREV_406 ; Fukushima Prefecture: • Mt. Shizukura-yama, Mishima Town, 37.3756°N, 139.6266°E, 11–20. VII. 2018, K. Narita (1, KUM), JHL_AREV_412 ; Kochi Prefecture: • Mt. Tebako, 7–10. VIII. 1957, K. Morimoto (2, KUM), JHL_AREV_196, JHL_AREV_197 ; Nara Prefecture: • Mt. Odaigahara, 2. VII. 1978, H. Hiramatsu (1, KUM), JHL_AREV_198 ; • Kasugayama, 25. VII. 1959, T. Hozumi (1, KUM), JHL_AREV_121 ; • Kasuga, 5–31. V. 1959, K. Ueda (3, KUM), JHL_AREV_401 – JHL_AREV_403 ; • Kasuga, 30. IV. 1961, K. Ueda (1, KUM), JHL_AREV_404 ; Okayama Prefecture: • Takahashi City, Mt. Gagyuzan, 19–20. V. 1975, H. Irie (3, KUM), JHL_AREV_178 – JHL_AREV_180 ; Wakayama Prefecture: • Mt. Gomadan, 28. VII. 1979, I. Matoba (1, KUM), JHL_AREV_191 .

Non-type material.

Japan: Ehime Prefecture: • Hojo-shi, Mt. Takanawa, 18. V. 2003, T. Kurihara (1, KUM), JHL_AREV_420 ; • Ishizuchi Mt., Omogo Valley, 18–25. VIII. 1980, S. & J. Peck (1, CMNC), JHL_AREV_668 ; Fukuoka Prefecture: • Hiko-san, 23–26. VII. 1968, M. Chujo (1, KUM), JHL_AREV_195 ; Hiroshima Prefecture: • Sandankyo, 12–13. V. 1969, M. Chujo (1, KUM), JHL_AREV_418 ; Miyazaki Prefecture: • Miyakonojo-shi, Natsuo-cho, Miike, 22. VI. 2019, R. Ito (6, KUM), JHL_AREV_407 – JHL_AREV_411, JHL_DNA_117 (GenBank accession number: PV 255632) ; Nara Prefecture: • Kasuga, 10. V. 1959, T. Shibata (1, KUM), JHL_ACITAI_091 ; Oita Prefecture: • Mt. Kuro-dake, 28. V. 1990, S. Ogata (4, KUM), JHL_AREV_413 – JHL_AREV_416 ; • Tsukahara, Yufuin-cho, Yufu-shi, 21. XI. 2016, R. Ito (1, KUM), JHL_AREV_721 ; • Tsukahara, Yufuin-cho, Yufu-shi, 27. V. 2018, R. Ito (1, KUM), JHL_DNA_123 (GenBank accession number: PV 255633) ; Wakayama Prefecture: • Komoridani, 21. VIII. 1941, K. Sakaguchi (1, HUM), JHL_AREV_678 ; Yamagata Prefecture: • Tozawa-mura, Mt. Haguro, 23. VI. 2003, J. Aoki (1, KUM), JHL_AREV_417 .

Diagnosis.

Body length 4.0– 5.4 mm. Covered in pale brown scales, with two obliquely shaped tan-colored, black-bordered spots across middle of elytra. Pronotum lacking impunctate longitudinal midline (present in A. koguma). Scutellum sparsely covered in pale yellow scales. All elytral intervals with erect scales. Sclerolepidia indistinct, forming low, rounded, non-protruding tubercles. Third tarsomeres distinctly truncate (Fig. 2 E) (compare with the superficially similar A. kiotoensis, A. maculaalba, and A. sauteri, which all have emarginate third tarsomeres). Pedon with lateral edges approx. parallel in dorsal view, but converging evenly into a blunt, rounded point. Internal sac not visible inside the aedeagus, but with a basal projection that bears a distinctive rectangular sclerite anteriorly at its apex (Fig. 6 H 1 – 2).

Distribution.

This species is found in mainland Japan (except Hokkaido) and has also been reported from South Korea (Park et al. 2009).