Comparative morphology of the endophallic structures of the genus Laius (Coleoptera, Melyridae), with the descriptions of three new species Author Yoshitomi, Hiroyuki text European Journal of Taxonomy 2014 2014-09-25 97 1 29 journal article 21939 10.5852/ejt.2014.97 37e33fa8-2cb4-4693-86c6-77bb430b5baa 2118-9773 3838926 D58FA727-9A10-4023-B178-9E6CCD1EA457 Laius andamanensis sp. nov. urn:lsid:zoobank.org:act: AB272070-CAEA-4964-8CFD-A219E93222F1 Figs 3B , 5C–D , 7B , 8B , 9B , 12 Diagnosis Male antennomere III distinctly projecting laterally, shallowly concave in dorso-mesal portion, L/W = 0.70; aedeagal apex concave; gonoporal piece straight and slender; ligula long and slightly curved; additional sclerite absent. Etymology After the type locality, Andaman Islands, India . Type material Holotype ♂ ( NHMB ), “ ANDAMAN Is.: Havelock I. env. of village No. 4, 11°59’N , 92°58’E , 22. iv-14. V. 1998 , Karel & Simon Majer leg.”. Fig. 2. Aedeagus of Laius lutaoensis Yoshitomi & Lee, 2010 , showing the terminology and abbreviations for measurement of endophallic structures. A . Aedeagus with extracted endophallus. B . Aedeagus with holding endophallus (from Yoshitomi & Lee 2010 ). C . Gonoporal piece. D . Ligula. Fig. 3. Endophallic sclerites of Laius spp. A . Laius baliensis sp. nov. (paratype). B . L. andamanensis sp. nov. (paratype). C . L. rodriguesensis sp. nov. (paratype). D . L. maai Wittmer, 1973 (paratype). E . L. marchei Pic, 1922 . F . L. politus Fairmaire, 1880 . G . L. sabangensis Wittmer, 1985 (paratype). H . L. sericatus Champion, 1924 . I . L. submariniformis Wittmer, 1985 (paratype). J . L. asahinai Nakane, 1955 . Fig. 4. Endophallic sclerites of Laius spp. A . Laius etsukoae Satô, Yoshitomi & Ohbayashi, 2006 (paratype). B . L. flavicornis (Fabricius, 1801) . C . L. keiichii Satô, Yoshitomi & Ohbayashi, 2006 (paratype). D . L. lutaoensis Yoshitomi & Lee, 2010 (paratype). E . L. madli Yoshitomi, 2010 (paratype). F . L. miyamotoi Nakane, 1955 . G . L. satoi Yoshitomi, 2008 . H . L. taiwanus Yoshitomi & Lee, 2010 (paratype). I . L. pankowi Wittmer, 1999 . Paratypes 22 ♂♂ , 10 ♀♀ ( NHMB , EUMJ ), same data as for the holotype . Description Male Body oblong, shining, densely covered with short black setae. Coloration of body black with dully bluish luster on elytra; labrum, maxillary palpomere I, and tarsi brown; antennomeres I–III yellowish-orange. Head narrower than pronotum, very densely punctate; vertex slightly convex dorsally; eyes relatively large, prominent; HL/HW 0.76–0.90 (0.81). Antennae ( Fig. 7B ) long; antennomere III ( Fig. 8B ) transversal trapezoidal, distinctly projecting laterally, shallowly concave in dorso-mesal portion, L/W = 0.70; approximate ratio of each antennomeres (n = 1) as 8.3: 1.0: 5.0: 2.0: 2.2: 2.0: 2.0: 2.0: 2.0: 2.0: 3.5. Pronotum quadrate, widest near anterior margin, rounded and obscure in antero- and postero-lateral angles, punctate as in head; PW/PL 1.18–1.33 (1.24). Scutellum semicircular, covered with fine punctures. Elytra oblong, widest at apical 1/4; sides gradually expanded postero-laterally; EL/ EW 1.36–1.55 (1.45); EL/PL 2.52–2.88 (2.67); EW/PW 1.38–1.55 (1.48); TL/EW 2.30–2.56 (2.44). Legs relatively long and slender; fore tibia ( Fig. 12A ) enlarged, deeply excavate. Caudal margin of tergite VII shallowly concave. Aedeagus ( Fig. 9B ) about 1.13 mm , concave at aedeagal apex ( Fig. 12C ). Gonoporal piece ( Fig. 3B ) straight, slender, 0.74 mm in GL; GL/AL 2.39. Ligula ( Fig. 3B ) relatively long, slightly curved; LL 0.27 mm ; LW 0.11 mm ; LL/LW 2.58; GL/LL 2.71. Female Similar to male in general appearance. HL/HW 0.75–0.80 (0.79); PW/PL 1.18–1.30 (1.23); EL/ EW 1.36–1.48 (1.41); EL/PL 2.44–2.73 (2.60); EW/PW 1.45–1.58 (1.51); TL/EW 2.30–2.43 (2.36). Antennae ( Fig. 7B ) long; antennomere III ( Fig. 12B ) distinctly expanded laterally, shallowly concave in dorsal portion, L/W = 2.42; approximate ratio of each antennomeres (n = 1) as 8.0: 1.0: 4.4: 2.2: 2.4: 2.2: 2.2: 2.0: 2.0: 2.0: 3.6 Measurements Male (n = 20): TL 5.52–6.33 (5.79) mm; HL 1.00–1.15 (1.05) mm; HW 1.22–1.38 (1.30) mm; PW 1.48– 1.75 (1.61) mm; PL 1.20–1.48 (1.29) mm; EL 3.28–3.75 (3.45) mm; EW 2.18–2.70 (2.38) mm. Female (n = 6): TL 4.43–4.96 (4.67) mm; HL 0.75–0.85 (0.81) mm; HW 1.00–1.08 (1.03) mm; PW 1.20–1.42 (1.32) mm; PL 1.00–1.20 (1.07) mm; EL 2.60–3.00 (2.79) mm; EW 1.85–2.15 (1.98) mm. Distribution Only known from the type locality, India (Andaman Islands). Remarks This is distinct species in having transversal antennomere III of male.