Laius marchei Pic, 1922

Yoshitomi, Hiroyuki, 2014, Comparative morphology of the endophallic structures of the genus Laius (Coleoptera, Melyridae), with the descriptions of three new species, European Journal of Taxonomy 97, pp. 1-29 : 13-15

publication ID	https://doi.org/ 10.5852/ejt.2014.97
publication LSID	lsid:zoobank.org:pub:D58FA727-9A10-4023-B178-9E6CCD1EA457
DOI	https://doi.org/10.5281/zenodo.3852555
persistent identifier	https://treatment.plazi.org/id/03933D4C-2054-FFBC-6DFA-8003FC14FB8E
treatment provided by	Tatiana
scientific name	Laius marchei Pic, 1922
status

Treatment

Figs 3E View Fig , 6B View Fig , 7E View Fig , 8E View Fig , 9E View Fig

Laius marchei Pic, 1922: 158 .

Rotamalachius esakii Kôno, 1937 in Kôno & Esaki 1937: 121 . Synonymised by Nakane (1955).

Laius marchei – Wittmer 1958: 72 [redescription]. — Satô et al. 2006: 344.

Material examined

56 ♂♂, 14 ♀♀ ( EUMJ), “(MARIANA Is.) Teteto Beach Rota I. 22. Jan. 1980 M. Tomokuni ”; 1 ♀ ( EUMJ), “ Is. Rota mariana VIII. 8. 1940 D. Matsusita ”, “ Laius marchei Pic det. W. Wittmer ”; 1 ♂ ( EUMJ), “(Rota Tatochio) South Sea Islands of Nippon: 8-VIII. 1940 Coll. Dengo Matsusita ”; 2 ♂♂, 1 ♀ ( BPBM), “Tumon Bay, Guam 24 June 1969 ”, “ A. A. LaPlante Collection BISHOP Museum Acc. #1977.84”.

Redescription

Male

HL/HW 0.71–0.93 (0.79); PW/PL 1.21–1.36 (1.28); EL/EW 1.28–1.48 (1.42); EL/PL 2.42–2.86 (2.68); EW/PW 1.41–1.58 (1.48); TL/EW 2.25–2.44 (2.36). Antennae ( Fig. 7E View Fig ) long; antennomere I long and curved laterally, with small projection in lateral margin; antennomere III ( Fig. 8E View Fig ) trapezoidal, deeply concave in dorso-mesal portion, L/W = 0.76; approximate ratio of each antennomeres (n = 1) as 11.8: 1.0: 7.0: 2.6: 2.0: 2.2: 2.2: 2.4: 2.4: 2.4: 3.8. Caudal margin of tergite VII concave. Aedeagus ( Fig. 9E View Fig ) about 1.28 mm, concave at aedeagal apex. Gonoporal piece ( Fig. 3E View Fig ) straight, slender, with long and straight basal projection, 0.80 mm in GL; GL/AL 1.91. Ligula ( Fig. 3E View Fig ) long and slender, strongly curved in apical half; LL 0.33 mm; LW 0.17 mm; LL/LW 2.81; GL/LL 2.44.

Female

HL/HW 0.72–0.87 (0.80); PW/PL 1.13–1.32 (1.24); EL/EW 1.43–1.55 (1.46); EL/PL 2.64–2.96 (2.82); EW/PW 1.52–1.67 (1.57); TL/EW 2.34–2.45 (2.38). Antennae ( Fig. 7E View Fig ) long; antennomere III short, L/W = 2.25; approximate ratio of each antennomeres (n = 1) as 9.4: 1.0: 5.0: 2.4: 2.8: 2.4: 2.4: 2.4: 2.4: 2.4: 4.0.

Measurements

Male (n = 15): TL 4.90–6.75 (5.36) mm; HL 0.80–1.40 (0.94) mm; HW 1.10–1.50 (1.19) mm; PW 1.35– 1.90 (1.53) mm; PL 1.10–1.50 (1.20) mm; EL 2.90–3.85 (3.21) mm; EW 2.10–3.00 (2.27) mm. Female (n = 6): TL 5.15–5.73 (5.37) mm; HL 0.85–1.00 (0.92) mm; HW 1.10–1.25 (1.15) mm; PW 1.35–1.50 (1.44) mm; PL 1.10–1.30 (1.17) mm; EL 3.15–3.43 (3.28) mm; EW 2.20–2.40 (2.25) mm.

Distribution

Mariana Isls. (Rota, Guam).

Remarks

This is the first record of this species from Guam, Mariana Islands.