Cnestus mutilatus (Blandford, 1894)

Marchioro, Matteo, Faccoli, Massimo, Dal Cortivo, Marialuisa, Branco, Manuela, Roques, Alain, Garcia, Andre & Ruzzier, Enrico, 2022, New species and new records of exotic Scolytinae (Coleoptera, Curculionidae) in Europe, Biodiversity Data Journal 10, pp. 93995-93995 : 93995

Cnestus mutilatus (Blandford, 1894)

Materials

Type status: Other material. Occurrence: recordedBy: C. Bellò, M. Attorino; individualCount: 2; sex: females; lifeStage: adult; occurrenceID: 6FD1A1F1-FA44-5C1A-97AF-BED03D0743E6; Taxon: scientificName: Cnestus mutilatus (Blandford, 1894); Location : continent: Europe ; country: Italy; countryCode: IT; stateProvince: Veneto; county: Treviso ; municipality: Maser ; locality: strada per Forcella Moscaccin ; decimalLatitude: 45.813500; decimalLongitude: 11.970306; geodeticDatum: WGS84; Identification : identifiedBy: Enrico Ruzzier ; Event : eventTime: 2022-02-03; Record Level: collectionID: CBPC Type status: Other material. Occurrence: recordedBy: M. Marchioro; individualCount: 2; sex: females; lifeStage: adult; occurrenceID: FAB6D080-EA94-535C-BBFF-04FCEA3B4024; Taxon: scientificName: Cnestus mutilatus (Blandford, 1894); Location : continent: Europe ; country: Italy; countryCode: IT; stateProvince: Veneto; county: Treviso ; municipality: Nervesa della Battaglia ; locality: bosco del Montello ; decimalLatitude: 45.829772; decimalLongitude: 12.171981; geodeticDatum: WGS84; Identification : identifiedBy: Enrico Ruzzier ; Event : eventTime: 2021-08-15; Record Level: collectionID: EDUP Type status: Other material. Occurrence: recordedBy: M. Marchioro; individualCount: 2; sex: females; lifeStage: adult; occurrenceID: 73D8A4F2-4D98-57B8-9A40-D16F7C9DB7AA; Taxon: scientificName: Cnestus mutilatus (Blandford, 1894); Location : continent: Europe ; country: Italy; countryCode: IT; stateProvince: Veneto; county: Treviso ; municipality: Nervesa della Battaglia ; locality: bosco del Montello ; decimalLatitude: 45.813500; decimalLongitude: 11.970306; geodeticDatum: WGS84; Identification : identifiedBy: Enrico Ruzzier ; Event : eventTime: 2021-08-15; Record Level: collectionID: EDUP

Distribution

This species, native to the Oriental and Eastern Palearctic Regions, is now introduced and established in North America ( Gomez et al. 2018, Smith et al. 2020). Cnestus mutilatus has been recently recorded in Europe (Italy) on the basis of a single specimen collected in NE Italy ( Colombari et al. 2022). The discovery of the species in two sites located at about 20 km from the record mentioned above clearly indicates its establishment in the Veneto Region (NE Italy)(Fig. 2 )

Notes

Cnestus mutilatus from Maser ("strada per forcella Moscaccin", Treviso -Italy) was collected by sifting forest litter under Quercus sp. during wintertime (Fig. 9 ). The other specimens were collected during a survey conducted in Veneto Region using black multi-funnel traps baited with ethanol and alpha-pinene.

Hosts

For C. mutilatus , more than forty host plant species have been recorded, mostly belonging to Fabaceae (5 species), Fagaceae (4 species), Lauraceae (7 species) and Sapindaceae (5 species) ( Wood and Bright 1992, Mandelshtam et al. 2018, Smith et al. 2020). Amongst the reported host plants, some are also present in Europe and have economic significance (i.e. Juglans regia L. ( Juglandaceae ), Morus alba L. ( Moraceae ), Prunus serotina Ehrh ( Rosaceae ) and Vitis rotundifolia Michx. ( Vitaceae )) ( Mandelshtam et al. 2018, Smith et al. 2020, Ruzzier et al. 2021b).

Identification remarks

The haplotype network indicates the Eastern Palaearctic origin of the C. mutilatus Italian population; in particular, the 100% identity between the Italian GBMNF53732-22, sequenced by Colombari et al. (2022) and GBMNB27741-2, sequenced by Cognato et al. (2020), indicates Shanghai (China) as the possible point of origin (Fig. 10 ).

Figures

Figure 2. Distribution records of non-native scolytine species in Italy: Cnestus mutilatus (Blandford, 1894) [light green]; Dryoxylon onoharaense (Murayama, 1934) [dark green]; Phloeotribus liminaris (Harris, 1852) [red]; Xyleborinus attenuatus (Blandford, 1894) [purple].

Figure 9. Cnestus mutilatus collected in Maser (February 2022), photographed in nature (photocredit: Pietro Berton).

Figure 10. Haplotype network of Cnestus mutilatus COI sequences available on BOLD Systems; network constructed using the Minimum Spanning Network approach (image credit: Enrico Ruzzier).