Protosticta beaumonti Wilson, 1997

Phan, Quoc Toan & Kompier, Tom, 2016, A study of the genus Protosticta Selys, 1855, with descriptions of four new species from Vietnam (Odonata: Platystictidae), Zootaxa 4098 (3), pp. 529-544: 530-531

publication ID

http://doi.org/10.11646/zootaxa.4098.3.6

publication LSID

lsid:zoobank.org:pub:A005DB6C-7389-4506-B2D5-392531F832EB

persistent identifier

http://treatment.plazi.org/id/8A1EB74F-897E-FF95-C7F3-63AEFD299477

treatment provided by

Plazi

scientific name

Protosticta beaumonti Wilson, 1997
status

 

1. Protosticta beaumonti Wilson, 1997  (dark form)

( Figure 1View FIGURE 1 A–F)

Protosticta  sp.: Wilson (1995), p. 21, p. 23, Figs. 78, 79, 81, 83, 85 (photos, Hong Kong).

Protosticta beaumonti: Wilson (1997)  , pp. 57–59, Figs. 11–16.— Wilson & Reels (2003), pp. 273–275, Figs. 114–120 ( Hong Kong, Guangdong).— Kitagawa et al. (1997), p. 12, Figs. 2–3View FIGURE 2View FIGURE 3 (Sunset Peak, Lantau, Hong Kong).

Specimens examined. 1 male, Mau Son Mountain, Loc Binh district, Lang Son Province, 07.VI. 2014, Tom Kompier leg.; 3 males, Bhalee, Tay Giang district, Quang Nam Province, 27.V. 2015, Quoc Toan Phan leg.

Notes. These are the first records of this species for Vietnam. Wilson (1997) described the light form of P. beaumonti  from Hong Kong, and later described the dark form of this species from Guangdong in China ( Wilson & Reels 2003). The male specimens from northern and central Vietnam are consistent with the description of the dark form of P. beaumonti sensu Wilson & Reels (2003)  , including the color pattern of the abdomen of the female. P. beaumonti  resembles P. satoi  closely, but their dark forms can be separated by the following characters:

In P. s a t o i, the yellow marking between the posterior end of the metepisternum and the metepimeron consists of a very small stripe in the male ( Fig. 5View FIGURE 5 A) and is absent in the female ( Fig. 5View FIGURE 5 H) but consists of a very large stripe both in the male and female of P. beaumonti  ( Figs. 1View FIGURE 1 A, 1 E).

The dorsum of S 9 of the female of P. beaumonti  is dark ( Fig. 1View FIGURE 1 F), not whitish as in the female of P. satoi  ( Fig. 5View FIGURE 5 J).

The relationships among the light and dark forms of P. satoi  and P. beaumonti  are problematic. Van Tol (2008) made a convincing case that the dark form of P. satoi  and the light form of P. satoi  are the same species. We follow this interpretation. Van Tol also suggested that P. s a t o i may be the same species as light-form P. beaumonti  described from Hong Kong by Wilson (1997). At the same time we consider the dark form of P. s a t o i to be different from the dark form specimens from Mau Son and Quang Nam based on coloration and minor morphological differences and consider these to be conspecific with the dark form of P. beaumonti  from Guangxi ( Wilson and Reels 2003). Van Tol put forward the possibility that the dark form of P. satoi  may be the same taxon as the dark form of P. beaumonti  from Guangxi. We do not follow that interpretation here. However, from this follows that either the dark form of P. beaumonti  is not the same species as the light form of P. beaumonti  (if the light form of P. beaumonti  is a junior synonym of P. satoi  ) or that the light form of P. beaumonti  is not conspecific with P. satoi  , in which case the dark form of P. beaumonti  may or may not be the same species as the light form of P. beaumonti  . For the moment, we follow Wilson & Reels (2003) that the light and dark forms of P. beaumonti  are conspecific, as we have not studied the material. For the same reason of not having studied the Chinese specimens, it remains possible that the specimens from Mau Son and Quang Nam here identified as the dark form of P. beaumonti  are in fact an additional and as yet undescribed species. Detailed molecular studies are required to verify the total number of species involved and their relationships. The occurrence of at least two species of this complex in Vietnam seems beyond doubt.

Measurements. Male. Hindwing 24–25; abdomen including appendages 43–44.

Distribution. Vietnam (Mau Son mountain, Lang Son Province; Tay Giang district, Quang Nam Province), China (Diding, Guangxi), Hong Kong (Lantau).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Odonata

Family

Platystictidae

Genus

Protosticta

Loc

Protosticta beaumonti Wilson, 1997

Phan, Quoc Toan & Kompier, Tom 2016

2016
Loc

P. beaumonti sensu

Wilson & Reels 2003

2003
Loc

Protosticta beaumonti:

Wilson 1997

1997