Tenomerga trabecula Neboiss, 1984

Yoshitomi, Hiroyuki, 2024, Revision of Tenomerga (Coleoptera, Cupedidae) of Japan and adjacent regions, Zootaxa 5555 (2), pp. 201-226 : 218-220

Tenomerga trabecula Neboiss, 1984

[Japanese name: Nise-hime-nagahiratamushi]

Figs 1G, H , 3G, H , 4D , 10 , 13C ; Table 1

Tenomerga trabecula Neboiss, 1984: 450 . Yoshitomi 2016: 184.

Specimen examined. [ JAPAN] <Amami-Oshima> 1 male, ( KAC), Chinase, Naze-shi , 4–6. V. 2011, R. Noda leg. FIT; 1 female, ( NSMT), Hatsuno , 5. VII. 1972, S. Okajima leg. ; 1 male, ( EUMJ), Hatsuno , 6. VII. 1974 ; 1 male, ( KAC), Kamiya, Sumiyo-son , 5–7. VII. 2014, R. Noda leg. ; 1 male, ( EUMJ), Shinokawa, Setouchi-cho , 17. VI. 1997, S. Yano leg. ; 1 female, ( EUMJ), Takinohana-yama, Sumiyo-son , 13. I. 1983 (timber coll.) , 16. VI. 1983 (emerge) ; 1 female, ( KMNH), Yuwan-dake , 10. VII. 1976, K. Adachi leg. < Ryukyu: Okinawa-jima> 1 female, ( EUMJ), Yona, Oku , VI. 2019, S. Inada leg. ; 1 female, ( EUMJ), Yonaha-dake , 26. IV. 1975, H. & M. Ohishi leg.

[ CHINA] 1 female, ( NSMT), Shanghai, 8. VII. 1920 .

[ TAIWAN] 1 male ( EUMJ), Fushan , 650m Taipei, 8. VII. 2001, W. I. Chou leg. ; 1 male ( NMNS), Taiwan: Taipei Chungho , 1. VI. 2008, Y.-L. Lin leg. ; 1 male ( TARI), Nantou Nanshanchi , 3. VII. 2010, C.-P. Cheng leg. ; 1 male ( TARI), Pingtung Lilongshan , 25. V. 2007, Y.-L. Lin leg. ; 1 male ( TARI), Ilan Fushan Botanical Garden , 3. VII. 2013, Y. T. Wang leg. ; 1 male ( TARI), Tainan Kantoushan , 24. V. 2014, W.-C. Liao leg. ; 1 male ( TARI), Taichung Dakeng , 15. V. 2012, C. P. Cheng leg. ; 1 male, ( EUMJ), Fushan (650m), Taipei, 8. VII. 2001, W. I. Chou leg. ; 3 males, ( NSMT), " Hirokanan ", 11. VII. 1926. NSMT-I-C 25724, H. Kono collection ; 1 male, ( EUMJ), Funchiifo , 27. VIII. 1970, A. Rin leg. ; 1 male, ( NSMT), Kosempo , VII. 07–09, Sauter leg. NSMT-I-C 21759, H. Kono collection; 1 male, ( EUMJ), Kueishanlu, nr. Wulai , Taipei, 15. V. 1969, S. Hisamatsu leg. ; 1 male, ( NARO), Lianchí tan, 15. VI. 1973, H. Yokoyama leg. ; 1 male, ( NSMT), Lien Hwa Chi , 12. V. 1975, K. Akiyama leg. ; 1 male, ( NSMT), Lien Hwa Chi , 30. V. 1980, H. Makihara leg. ; 1 female, ( EUMJ), Lien Hwa Chi , 30. VI. 1972, K. Kiyoyama leg. ; 1 male, ( NARO), Nanshanchi, Nantou-Hsien , 2. VIII. 1976, K. Tazoe leg. ; 1 male, ( EUMJ), Nanshanchi, Nantou-Hsien , 26. VI. 1971, Y. Maeda leg. LT; 1 male, ( EUMJ), Socca, Shihzih , Pingtung, 30. V. 2016, N. Ohbayashi leg.

Diagnosis. Color of body yellowish brown, with alternating dark and pale brown markings. Elytra ( Fig. 4D ) with 10 longitudinal rows of window punctures; window punctures transverse.

Male ( Fig. 1G ). Eyes ( Fig. 3G ) large, strongly prominent. Antennae long and slender, reaching about proximal 3/4 of elytra; AL/TL 0.76–0.84 (0.80); approximate ratio of each antennomere (n = 4; average) as 3.92: 1.00: 3.78: 4.78: 5.40: 5.90: 6.11: 6.10: 6.15: 6.01: 7.86. Anterior pronotal angles ( Fig. 3G ) right-angled. HL/HW 0.58–0.67 (0.64); PW/PL 1.27–1.38 (1.32); EL/EW 2.67–2.88 (2.80); EL/PL 5.48–6.25 (5.89); EW/PW 1.55–1.64 (1.59); TL/EW 3.57–3.78 (3.70); EYL/EYW 1.97–2.00 (1.99); TEL/HL 0.14–0.17 (0.16). Apex of sternite IX acuminate. Bifurcate process ( Fig. 10D ) V-shaped. Parameres ( Fig. 10A, B ) with posterior projection of dorsal margin (pp) arcuate; apical hook ( Fig. 10C ) simply curved and pointed; ventro-marginal spines (vms) long, reaching apical hook. Apical margin of dorsal plate (dp, Fig. 10A ) deeply notched. Apical margin of mesal lobe (ml, Fig. 10A ) shallowly concave.

Female ( Fig. 1H ). Eyes ( Fig. 3H ) small. Antennae long and stout, reaching about proximal 3/4 of elytra; AL/TL 0.73–0.85 (0.79); approximate ratio of each antennomere (n = 5; average) as 3.22: 1.00: 3.32: 4.13: 4.57: 4.94: 5.04: 5.09: 5.04: 4.92: 6.30. Anterior pronotal angles ( Fig. 3H ) right-angled. HL/HW 0.62–0.68 (0.64); PW/PL 1.32–1.53 (1.41); EL/EW 2.68–2.80 (2.76); EL/PL 5.83–6.44 (6.12); EW/PW 1.53–1.62 (1.57); TL/EW 3.49–3.70 (3.61); EYL/EYW 1.86–2.33 (2.15); TEL/HL 0.17–0.19 (0.18).

Distribution. China; Taiwan; Japan: Amami-Oshima, Okinawa-jima.

Remarks. This is the first record of this species from Japan.

Figures

FIGURE 1. Habitus of Tenomerga spp. A, B) Tenomerga mucida, C, D) T. anguliscutis, E, F) T. japonica, G, H) T. trabecula, I, J) T. kurosawai, K, L) T. yamato. A, C, E, G, I, K) males; B, D, F, H, J, L) females. I) holotype, J) paratype. Scale bars = 5.0 mm.

FIGURE 3. Heads and pronota of Tenomerga spp. A, B) Tenomerga mucida, C, D) T. anguliscutis; E, F) T. japonica, G, H) T. trabecula, I, J) T. kurosawai, K, L) T. yamato. A, C, E, G, I, K) males; B, D, F, H, J, L) females. I) holotype, J) paratype. Scale bars = 1.0 mm.

FIGURE 4. Dorso-lateral views of elytra of Tenomerga spp. A) Tenomerga mucida, B) T. anguliscutis, C) T. japonica, D) T. trabecula, E) T. kurosawai, F) T. yamato. Scale bars = 1.0 mm.

FIGURE 10. Male genitalia of Tenomerga trabecula. A, B) aedeagus, dorsal (A) and ventral (B) views, C) apical hook, lateral view, D) bifurcate process.

FIGURE 13. Distribution maps of Tenomerga spp. A) Tenomerga mucida, B) T. anguliscutis, C) T. japonica (rhombus) and T. trabecula (triangle), D) T. yamato (square) and T. kurosawai (star).