Downesia kwangtunga Gressitt, 1950,

Sekerka, Lukáš, Jia, Fenglong, Pang, Hong & Borowiec, Lech, 2016, Cassidinae (Coleoptera: Chrysomelidae) types deposited at Sun Yat-sen University, Guangzhou, China, Zootaxa 4084 (1), pp. 50-78: 63

publication ID

http://doi.org/10.11646/zootaxa.4084.1.2

publication LSID

lsid:zoobank.org:pub:E0CD195C-19E5-4A41-BAEF-9F6195640E8A

persistent identifier

http://treatment.plazi.org/id/CC1D3851-FFCD-FFB3-02F0-F0F4D1298EE8

treatment provided by

Plazi

scientific name

Downesia kwangtunga Gressitt, 1950
status

 

Downesia kwangtunga Gressitt, 1950 

( Fig. 17View FIGURES 12 – 19. 12)

Downesia kwangtunga Gressitt, 1950: 84  .

Type locality. China, Guangdong prov., Lianping Co., Jiulianshan Mt., approx. 24°27.3′N, 114°33.8′E, 400–500 m a.s.l.

Original type series. Holotype ( LMNH) and one paratype from the same locality with unstated depository.

Type material examined. Holotype, glued: ‘Kwangtung, S. China | Kau-lin Shan, 700-900 | M. Lien pʼing Dist. | April 22, 1940 J. L. | Gressitt and F. K. To. [w, p, cb] || HOLOTYPE | DOWNESIA  [hw] | KWANGUNGA [hw] | J.L.Gressitt [r, p + hw by Gressitt, cb] || M-307 [w, hw, cb] || [vernacular name in Chinese, hw] | Downesia  [hw] | kwangtunga Gressitt  [hw] | det. Li-Zhong Hua [in Chinese, p] 1987 [hw] [w, p, cb] || En-289764 | [Data Matrix barcode] SYS [w. p, cb]’.

Current status. Valid species.

Remarks. Gressitt (1950) stated that the species differs from others in having just a single row of punctures between suture and the first costa. Chent et al. (1986) followed Gressitt and placed it in the key based on this character. However, holotype shows shortened row of several punctures on apical fifth of the elytra. Thus the species should be placed next to D. atrata Baly, 1869 in  the key proposed by Chen et al. (1986). Downesia kwangtunga  can be easily separated from D. atrata  by smaller and narrower body (3.5–5.5 mm x 1.1–1.7 mm) distinctly constricted behind humeral calli and then widening posteriorly and elytra with high and sharp costae while D. atrata  is larger and stouter (5.5–7.5 mm x 2.0 mm) without conspicuous constriction behind humeral calli and with elytral costae low and blunt.

LMNH

Museum d'Histoire naturelle

SYS

Zhongshan (Sun Yatsen) University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Chrysomelidae

Genus

Downesia

Loc

Downesia kwangtunga Gressitt, 1950

Sekerka, Lukáš, Jia, Fenglong, Pang, Hong & Borowiec, Lech 2016
2016
Loc

Downesia kwangtunga

Gressitt, J. L. 1950: 84