Dryocoetiops moestus (Blandford)

Beaver, Roger A., Smith, Sarah M. & Sanguansub, Sunisa, 2019, A review of the genus Dryocoetiops Schedl, with new species, new synonymy and a key to species (Coleoptera: Curculionidae: Scolytinae), Zootaxa 4712 (2), pp. 236-250 : 244-245

publication ID

https://doi.org/ 10.11646/zootaxa.4712.2.4

publication LSID

lsid:zoobank.org:pub:6ECB5A18-2345-4259-BE51-7E77D7111BB7

persistent identifier

https://treatment.plazi.org/id/03FA87EA-FFFD-FF94-5988-0100FD217408

treatment provided by

Plazi

scientific name

Dryocoetiops moestus (Blandford)
status

 

Dryocoetiops moestus (Blandford) View in CoL

(Figs 13-17)

Dryocoetes moestus Blandford 1894: 96 View in CoL .

Taphrorychus moestus (Blandford) View in CoL : Murayama 1957: 623.

Dryocoetiops moestus (Blandford) View in CoL : Knížek 2011: 86.

Dryocoetes dinoderoides Blandford 1894: 97 View in CoL . syn. n.

Dryocoetes coffeae Eggers 1923: 161 View in CoL . syn. n.

Dryocoetes javanus Eggers 1936: 87 View in CoL . syn. n.

Dryocoetes javanus Eggers View in CoL : Schedl 1962: 697 (synonymy with D. coffeae Eggers View in CoL )

Dryocoetes hirsutus Schedl 1939: 34 View in CoL . syn. n.

Dryocoetes tonkinensis Schedl 1942a: 179 View in CoL . syn. n.

Dryocoetes eugeniae Schedl 1942a: 180 View in CoL . syn. n.

Dryocoetes malaccensis Schedl 1942a: 180 View in CoL . syn. n.

Dryocoetes australis Schedl 1942b: 181 View in CoL . syn. n.

Pseudopoecilips taradakensis Murayama 1957: 618 View in CoL . syn. n.

Taxonomy. The holotypes of D. moestus View in CoL and D. dinoderoides View in CoL from Japan (NHML) have been examined and directly compared with the holotypes of D. tonkinensis View in CoL from Vietnam, D. eugeniae View in CoL and D. malaccensis View in CoL from West Malaysia, and D. australis View in CoL from Australia, and a paratype of D. hirsutus View in CoL from West Malaysia (all NMW); with specimens in NHML determined by K. E. Schedl and F. G. Browne as D. coffeae View in CoL , D. hirsutus View in CoL and D. tonkinensis View in CoL , and (incorrectly) as D. kepongi (Schedl) View in CoL ; and with numerous specimens in NHMB, NKME and RAB from Australia, Brunei, Cambodia, China, India, Indonesia (Java, West Papua), Japan, Malaysia (East and West), Nepal, Singapore, Taiwan and Thailand. Blandford (1894), Eggers (1923, 1936) and Schedl (1939, 1942a, b) separated the species that they described by various small differences in the body length and proportions, details of the sculpture of the frons, pronotum and elytra, the elytral vestiture, and the steepness of the slope of the elytral declivity. The original descriptions were generally based on single specimens of each species. Study of longer series from a wider range of localities shows that the characters they used are variable and intergrade. For example, Figures 14 and 17 show a difference in elytral shape, and in the form of the interstrial setae on the elytral declivity of a specimen from Malaysia (Fig. 14), and one from Australia (Fig. 17), but intermediates also occur. We propose that all the species listed above should be synonymized under the oldest name, Dryocoetiops moestus View in CoL . Pseudopoecilips taradakensis View in CoL was previously synonymised with Dryocoetiops kepongi (Schedl) View in CoL by Beaver (2011). However, further study indicates that the species should be included as a synonym of D. moestus View in CoL . The species is variable in size (1.9–3.1 mm long) and proportions (2.3–2.5 times as long as wide), as might be expected for a species with a wide distribution.

Distribution. Australia, ‘Borneo’, Brunei Darussalam, Cambodia, China (Sichuan, Yunnan), India (Bengal, Meghalaya), Indonesia (Java), Japan, Malaysia (E. and W.), Nepal, New Guinea, Singapore, Sri Lanka, Taiwan, Thailand, Timor, Vietnam.

New records. BRUNEI, Temburong, nr. K. Belalong Field Stud. Centre , 4°33′N, 115°09′E, 250m, ex liane, 2.ii.1992 ( R. A. Beaver) (2) GoogleMaps ; as previous except: ex Nephelium sp., 14.ii.1992 (1); as previous except: ex Shorea sp., 19.ii.1992 (1); CAMBODIA, Siem Reap, Angkor Park , light trap, 4.xii.2004 (Danny & Jump) (1) ; CHINA, Sichuan, Mt. Emei , 600–1050 m, 5–19.v.1989 (Lad. Bocák) (1) ; S. Yunnan, (Xishuangbanna), 23 km NW Jinghong, vic. Na Ban ( NNNR), 22°09.49′N 100° 38.92 ′, 730m, second[ary] for[est], EKL, 30.x.2008 (L. Meng) (1) ; Yunnan, Gaoligong Mts. , 25°22′N 98°49′E, 1500–2500 m, 17–24.v.1995 (Vit Kubáň) (1) GoogleMaps ; INDIA, Meghalaya, 3 km E Tura , GoogleMaps

25°30′N 90°14′E, 1150 m, 4.v.1999 (Dombický & Pacholátko) (1); NEPAL, P. Seti, D. Bajheng, way Segu Bagar (29°34’49’’N 81°13’44’’E) to GoogleMaps before Talkot (29°36′17′′N 81°17′54′′E, 1300-1400m, 15.vi.2009 (A. Kopetz) (1) GoogleMaps ;

Kathmandu V., Godavari , 1500 m, 29.iv.1984 (B. Bhakta) (1) ; THAILAND, Chiang Mai, Doi Chiang Dao WS, Nature trail, 19°24.278′N, 98°55.311′E, 491 m, pan trap, 5–6.x.2007 (Songkran & Apichart) (2) GoogleMaps ; Chiang Mai, Doi Phahompok NP, Doi Phaluang , 20°1.06′N, 99°9.581′E, 1449 m, Malaise trap, 20–27.vii.2007 (Wongchai P.) (1) GoogleMaps ; Chiang Mai, Doi Pui , 18°50′23′′N, 98°53′53′′E, 1200–1300 m, EtOH trap, various dates from 11.vi.–17.ix.2014, 8.vii.–11.xi.2015, 25.v.2016 (S. Sanguansub et al.) (22) GoogleMaps ; as previous except: ex Mangifera indica , ix.2014 (2); as previous except: ex Diospyros kaki , 27.vii.2012 ( R. A. Beaver) (4) ; Nakhon Sri Thammarat , Khao Luang N.P., EtOH trap, 1.ix.2010 (W. Sittichaya) (1) ; TIMOR LESTE, Ermera, Mertutu , Railori, S 8.76809, E 125.41182, ex Persea americana shoot, 22.ii.2019 ( T. Popic) (3).

Biology. The habits of the species have been briefly described above under the genus. Browne (1961) and Kalshoven (1958) (both as D. coffeae ) list trees in thirteen different families as hosts, indicating the polyphagy of the species. To that list can be added, based on collections made by the authors: Diospyros kaki (Ebenaceae) in Thailand, and Gomphia serrata (Ochnaceae) in West Malaysia. The species has also been collected from the petiole of large fallen leaves of Campnosperma auriculata (Anacardiaceae) , and of three species of Artocarpus (Moraceae) in West Malaysia ( Beaver & Browne 1979 as D. coffeae ), and from an unidentified liane in Brunei (see above). The diameter of the stems attacked varied from 0.25–1.2 cm. The gallery is sometimes started in an abandoned entrance gallery made by another species of beetle ( Kalshoven 1958; R. A. Beaver, pers. obs.). Recorded brood sizes vary from 7 to 24 ( Browne 1961; Kalshoven 1958). These authors also note an association with twig-boring xyleborine scolytines. Browne (1961) suggests that the species may be of economic importance, noting an occasion when stressed seedlings of Intsia palembanica (Leguminosae) were attacked and killed. However, attacks are normally secondary, following those of other species.

R

Departamento de Geologia, Universidad de Chile

V

Royal British Columbia Museum - Herbarium

T

Tavera, Department of Geology and Geophysics

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Curculionidae

Genus

Dryocoetiops

Loc

Dryocoetiops moestus (Blandford)

Beaver, Roger A., Smith, Sarah M. & Sanguansub, Sunisa 2019
2019
Loc

Dryocoetiops moestus

Knizek, M. 2011: 86
2011
Loc

Dryocoetes javanus

Schedl, K. E. 1962: 697
1962
Loc

Taphrorychus moestus (Blandford)

Murayama, J. 1957: 623
1957
Loc

Pseudopoecilips taradakensis

Murayama, J. 1957: 618
1957
Loc

Dryocoetes tonkinensis

Schedl, K. E. 1942: 179
1942
Loc

Dryocoetes eugeniae

Schedl, K. E. 1942: 180
1942
Loc

Dryocoetes malaccensis

Schedl, K. E. 1942: 180
1942
Loc

Dryocoetes australis

Schedl, K. E. 1942: 181
1942
Loc

Dryocoetes hirsutus

Schedl, K. E. 1939: 34
1939
Loc

Dryocoetes javanus

Eggers, H. 1936: 87
1936
Loc

Dryocoetes coffeae

Eggers, H. 1923: 161
1923
Loc

Dryocoetes moestus

Blandford, W. F. H. 1894: 96
1894
Loc

Dryocoetes dinoderoides

Blandford, W. F. H. 1894: 97
1894
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