Laccobius (Microlaccobius) formosus Gentili, 1979

Liu, Hsing-Che & Fikáček, Martin, 2021, Review of the Taiwanese Laccobius Erichson, 1837 (Coleoptera: Hydrophilidae) with description of a new species, Zootaxa 4963 (3), pp. 587-599 : 588-590

publication ID

https://doi.org/ 10.11646/zootaxa.4963.3.11

publication LSID

lsid:zoobank.org:pub:05C2E47F-426D-42EF-B07E-D586C63B6527

DOI

https://doi.org/10.5281/zenodo.4740350

persistent identifier

https://treatment.plazi.org/id/03C29A73-FFC6-4101-FF4B-A69106C5FE71

treatment provided by

Plazi

scientific name

Laccobius (Microlaccobius) formosus Gentili, 1979
status

 

Laccobius (Microlaccobius) formosus Gentili, 1979 View in CoL 台灣flǿ牙ḃ

( Figs 11, 15 View FIGURES 10–18 , 19 View FIGURES 19–22 , 23 View FIGURES 23–26 )

Laccobius (Microlaccobius) formosus Gentili, 1979: 48 View in CoL .

Material examined. TAIWAN: TAITUNG: 1 male, 3 females, ( NMNS): Lanyu [ae嶼], Yonghsing , 17-19.VIII.1998. H.T.Shih & K.W.Huang. L.I.T, [specimens NMNS ENT 3209-1094 View Materials , 3209-1690 View Materials , 3209-1141 View Materials , 3209-1403 View Materials ] ; 1 male, ( NMNS): Donghe [東河], Jindonglai Forest Road, 4.VIII.2012, Y. T. Wang leg , Light . KAOHSIUNG: 1 male, 6 spec., ( NMNS): Liukuei, Shanping [Oi平], 22-23.IV.2004. C.S.Lin & W.T.Yang, UV light trap, [specimens NMNS ENT 4409-723 View Materials , 4409-737 View Materials , 4409-712 View Materials , 4409-919 View Materials , 4409-734 View Materials , 4409-709 View Materials , 4409-711 View Materials ] ; 1 male, ( HCLC): Liouguei District [六 AE區], Laonong River [Ž濃ë], 22.996017°N 120.638178°E, 229m, 24.VI.2020. Hsing-Che Liu & Uitsiann Ong leg. GoogleMaps HSINCHU: 1 male, 1 female, ( HCLC): Hengshan Township [DZ山ė], Youluo Stream [油ǎë], 24.714584°N 121.141335°E, 172 m, 14.II.2019. Hsing-Che Liu leg. GoogleMaps NANTOU: 1 males, 5 spec., ( NMNS): Puli Township [埔¶ D], Meixi [眉ë], 23.988475°N 121.017601°E, 536m, 12.II.2020. Hsing-Che Liu leg. GoogleMaps ; 9 spec., ( NMPC) 4.4 km W of Puli Township start of the Shikeng Road , 530 m 23.988000, 121.017833 15.II.2020. Fikáček, Hu, Liang & Liu lgt. (2020-TW003) GoogleMaps . PINGTUNG: 1 spec., ( TARI): Neipu [內埔], 26.II.2020. Y.-T. Chung leg. ; 1 male, 2 spec., ( HCLC) Ligang Township [¶ffiė], Erchong River [二AEë], 22.7982°N 120.5011°E, 32m, 26.IV.2020. Hsing- Che Liu leg. GoogleMaps TAINAN: 1 male, ( HCLC): Zuozhen District [左D區], Jiaotan [m潭], 23.V.2020. by light trap, Kunta Ho & Wei-Chai Wang leg. TAICHUNG: 8 spec. ( NMPC): Heping distr,, Bashianshan Mts., Dajiaxi River at Songhe village , 24.17996°N 120.98233°E, 665 m, 5.i.2018, stony river partly with gravel banks: in fine gravel below stones and in green algae mats at the side of the river, Fikáček, Liang & Hsiao lgt. (2018-TW01) GoogleMaps ; 1 spec. ( NMPC): Heping distr., Xueshankengxi River E of Taoshan village, 24.32684°N 120.95377°E, 743 m, 6.i.2018, in gravel and among algae at side of a large stony river, Fikáček, Liang, Hsiao lgt. (2018-TW06) GoogleMaps .

Published records. Taihoku [= Taipei] ( Gentili 1979). Chipon [= Taitung County]; Kaohsiung; Heito [= Pintung County]; Hualien; Ilan [= Yilan] ( Gentili 1989, 1995); New Taipei ( Gentili 2003).

Diagnosis. Body size 2.2–2.7 mm, body width 1.6–1.9 mm. Body oval ( Fig. 11 View FIGURES 10–18 ). head black with preocular yellowish spots, Antennae with 8 antennomeres. Pronotum pale, with a large slightly metallic central dark spot ( Fig. 19 View FIGURES 19–22 ). Elytra surface pale, with dense slightly irregular series of dark spots. Male genitalia ( Fig. 15 View FIGURES 10–18 ): Aedeagus 0.7 mm long. Median lobe slender, rounded and membranous at apex; parameres much longer than median lobe, apex widely rounded and membranous, truncate inwards.

Differential diagnosis. Laccobius formosus Gentili, 1979 is very similar to L. fragilis Nakane, 1966 , from which it only differs in the median lobe broadly rounded at apex.

Distribution. China (Gansu, Guandong, Guangxi, Hainan, Hubei, Hunan, Jiangxi, Liaoning, Sichuan, Shaanxi, Shandong), Russia (Far East), Taiwan ( Fig. 27 View FIGURES 27 ) ( Przewoźny 2020, this paper). In Taiwan, L. formosus is distributed throughout the main island.

Bionomics. All specimens were collected from stony streams ( Fig. 23 View FIGURES 23–26 ).

NMNS

National Museum of Natural Science

NMPC

National Museum Prague

TARI

Taiwan Agricultural Research Institute

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Hydrophilidae

Genus

Laccobius

Loc

Laccobius (Microlaccobius) formosus Gentili, 1979

Liu, Hsing-Che & Fikáček, Martin 2021
2021
Loc

Laccobius (Microlaccobius) formosus

Gentili, E. 1979: 48
1979
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF