Laius andamanensis, Yoshitomi, 2014

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 : 6-9

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.3852557
persistent identifier	https://treatment.plazi.org/id/AB272070-CAEA-4964-8CFD-A219E93222F1
taxon LSID	lsid:zoobank.org:act:AB272070-CAEA-4964-8CFD-A219E93222F1
treatment provided by	Tatiana (2020-05-21 21:45:03, last updated 2024-11-26 06:55:00)
scientific name	Laius andamanensis
status	sp. nov.

Treatment

Laius andamanensis sp. nov.

urn:lsid:zoobank.org:act:AB272070-CAEA-4964-8CFD-A219E93222F1

Figs 3B View Fig , 5C–D View Fig , 7B View Fig , 8B View Fig , 9B View Fig , 12 View Fig

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.”.

GoogleMaps

Paratypes

22 ♂♂, 10 ♀♀ ( NHMB, EUMJ), same data as for the holotype.

GoogleMaps

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 View Fig ) long; antennomere III ( Fig. 8B View Fig ) 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 View Fig ) enlarged, deeply excavate. Caudal margin of tergite VII shallowly concave.

Aedeagus ( Fig. 9B View Fig ) about 1.13 mm, concave at aedeagal apex ( Fig. 12C View Fig ). Gonoporal piece ( Fig. 3B View Fig ) straight, slender, 0.74 mm in GL; GL/AL 2.39. Ligula ( Fig. 3B View Fig ) 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 View Fig ) long; antennomere III ( Fig. 12B View Fig ) 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.

References

Champion G. C. 1924. Coleoptera from the Seychelles: Lampyridae, Helodidae, Cantharidae, Melyridae, and supplement to Cleridae. Transactions of the Royal Entomological Society of London 1923 (3 - 4): 295 - 304.

Fairmaire L. 1880. Diagnoses de coleopteres de Nossi-Be. Le Naturaliste 2: 246.

Nakane T. 1955. Marine insects of the Tokara Islands. V. Three new species of the genus Laius Guerin from Kyushu and the Tokara Islands, with notes on a species from Marianna. Publications of the Seto Marine Biological Laboratory 4 (2 - 3): 373 - 378.

Pic M. 1922. Coleopteres Malacodermes nouveaux des Collections du Museum. Bulletin du Museum national d'Histoire naturelle (Paris) 28 (2): 157 - 161.

Sato M., Yoshitomi H. & Ohbayashi T. 2006. Notes on Melyridae (Coleoptera) of Micronesia. Elytra 34: 343 - 351.

Wittmer W. 1973. Zur Kenntnis der Malachiidae (Col.) von Neuguinea, Neubritannien, Newireland und den Salomonen. Pacific Insects 15 (3 - 4): 289 - 352.

Wittmer W. 1985. 38. Beitrag zur Kenntnis der indo-malaiischen Fauna. Entomologische Arbeiten aus dem Museum G. Frey 33 - 34: 381 - 390.

Yoshitomi H. 2008. Contribution to the taxonomy of the genus Laius Guerin-Menevelle in Indonesia, with description of a new species (Coleoptera: Malachiidae). Koleopterologische Rundschau 78: 285 - 290.

Yoshitomi H. & Lee C. - F. 2010. Revision of the Taiwanese and Japanese species of the genus Laius (Insecta: Coleoptera: Malachiidae). Zoological studies 49 (4): 534 - 543.

Figures

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. 5. Dorsal habitus of Laius spp. of ♂ (holotypes A, C, E) and ♀♀ (paratypes B, D, F). A–B. Laius baliensis sp. nov. C–D. L. andamanensis sp. nov. E–F. L. rodriguesensis sp. nov. Scale bars = 1.0 mm.

Fig. 7. Left antennae of Laius spp. (above: male; below: female). 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).

Fig. 8. Male antennomere III 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).

Fig. 9. Aegeagi 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).

Fig. 12. Laius andamanensis sp. nov., ♂, paratype. A. Inner part of fore leg, showing enlarged femur and tibia. B. Antennomere III. C. Aedeagal apex. D. Spinous area (SEM photographs).