Tricosa metacuneola (Eggers) Cognato & Smith & Beaver, 2020

Cognato, Anthony I., Smith, Sarah M. & Beaver, Roger A., 2020, Two new genera of Oriental xyleborine ambrosia beetles (Coleoptera, Curculionidae: Scolytinae), Zootaxa 4722 (6), pp. 540-554 : 550

publication ID

https://doi.org/ 10.11646/zootaxa.4722.6.2

publication LSID

lsid:zoobank.org:pub:4ADBCE90-97D2-4A34-BCDC-5E207D8EDF0D

DOI

https://doi.org/10.5281/zenodo.5683061

persistent identifier

https://treatment.plazi.org/id/03A2BF01-FFBF-FF82-AA8E-FBD0AEBBF8A1

treatment provided by

Plazi

scientific name

Tricosa metacuneola (Eggers)
status

comb. nov.

Tricosa metacuneola (Eggers) comb. n.

( Figs 35–38 View FIGURES 19–38 )

Xyleborus metacuneolus Eggers, 1940: 150 View in CoL .

Xyleborus kaimochii Nobuchi, 1981: 143 View in CoL . Synonymy: Smith et al., 2018: 397.

Diagnosis: 2.40–2.50 mm long (mean = 2.46 mm; n = 5); 2.67–2.78 times as long as wide. This species is distinguished by elytral discal striae and interstriae clearly uniseriate punctate, anterior margin of pronotum with a row of serrations, and protibia obliquely triangular.

Material examined: Paratype Xyleborus metacuneolus , [ INDONESIA] : Java, Buitenzorg , 15.x.1923 ( NMNH, 1). [ INDONESIA] : Java, Boger [sic] viii.1964, N.L.H. Krauss ( NMNH, 4) . MALAYSIA: Sabah, Sipitang, Mendolong , 19.iv.1988, S. Adebratt ( RABC, 1) . PAPUA NEW GUINEA: Madang, Ohu, J. Hulcr, ex Gymnacranthera paniculata ( MSUC, 1) . SINGAPORE: Bukit Timah , 50m, 25‒27.x.1998, B. H. Jordal ( RABC, 2) .

Distribution: Brunei, Indonesia (Java, Sulawesi), Japan, East & West Malaysia, New Guinea, Philippines, Singapore, Sri Lanka, Taiwan, Thailand.

Host plants: Probably polyphagous. Recorded from Buchanania , Mangifera (Anacardiaceae) , Swietenia (Meliaceae) , Castanopsis (Fagaceae) ( Nobuchi 1981; Beaver & Liu 2010) and Gymnacranthera (Myrsticaceae) .

Remarks: The paratype from Indonesia (Java; NMNH) and two specimens from Singapore and Malaysia (Sabah; RABC) were all found to have different pronotal length/width ratios of 1.08, 1.23 and 0.88 respectively. It is unclear whether the species is morphologically variable or if this species may be a species complex. At the time of this study DNA data was only available for T. metacuneola s.s. Future research is necessary to determine species limits.

NMNH

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Curculionidae

SubFamily

Scolytinae

Genus

Tricosa

Loc

Tricosa metacuneola (Eggers)

Cognato, Anthony I., Smith, Sarah M. & Beaver, Roger A. 2020
2020
Loc

Xyleborus kaimochii

Smith, S. M. & Beaver, R. A. & Cognato, A. I. 2018: 397
Nobuchi, A. 1981: 143
1981
Loc

Xyleborus metacuneolus

Eggers, H. 1940: 150
1940
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