Acanthosoma montanum ( Liu, 1987 ), 2015

Acanthosoma montanum ( Liu, 1987) View in CoL , new combination

Figs 137–139 View FIGURES 134–139 , 146–149 View FIGURES 140–149 , 151 View FIGURES 150–151

Anaxandra montana Liu, 1987: 152 View in CoL . Syntypes: China, Yunnan, Heqing and Tengchong ; depository not stated.

Anaxandra montana View in CoL : Liu 1992: 131 (record), Göllner-Scheiding 2006: 170 (catalogue, distribution).

Type material examined. Neotype (present designation): ♀, “<Yunnan Yuanjiang County Wangxiangtai> [Ch] \ <Nature Reserve 210M Li Min> [Ch] \ 2006-VII-21 ”; pinned, segment IV of right antenna, segment II of left mid tarsus, and tarsus of right hind leg lacking; provided with our neotype label; deposited in NKUM ( Figs 137–139 View FIGURES 134–139 ).

Specimens examined. CHINA. Yunnan: Lüchun , 1900 m, 31.v.1996, leg. L.Y. Zheng (1 ♀ NKUM), Longling, Longxin, Dapo, 2140 m, 14.x.2002, H.J. Xue (2 ♂♂ NKUM), Longyang, Baihualing, 1600 m, 12.viii.2006, leg. P.Z. Dong (1 ♀ NKUM), Dali, Xiaguan, on tea plant, viii.1981, unknown collector (1 ♂ NKUM) ; Gudong env., Mt. Yufeng Shen , 25°22.7'N 98°25.4'E, 1825 m, 8.vi.2007, leg. J. Hájek & J. Růžička (1 ♀ NMPC) GoogleMaps .— LAOS. Unspecified locality, leg. R . Vitalis de Salvaza (1 ♂ RMNH) .— VIETNAM. Tuyen Quang Prov.: Tuyen Quang , v. 1915, leg. R. V . de Salvaza (1 ♂ BMNH) ; Lao Cai Prov.: Lao Cai Prov., Hoang Lien National Park , Fan Si Pan Mts., Cat Cat, stream valley, 2050 m, 22°18.337'N 103°49.291'E, 15.iii.1998, No. 17, at light, leg. L. Peregovits & T GoogleMaps . Vásárhelyi (1 ♀ HNHM) ; “Chapa” [= Sa Pa ], v.1916, leg. R. V . de Salvaza (1 ♂ BMNH) ; Tay Ninh Prov.: “Tayninh” [= Tay Ninh ], coll. E. le Moult (1 ♀ RMNH) .

Diagnosis. The species is similar to A. shensiense , it can be distinguished from the latter species based on its long and gracile humeral processes ( Figs 137–138 View FIGURES 134–139 ), its long mesosternal carina surpassing middle of head ( Fig. 138 View FIGURES 134–139 ), the slightly longer lateral projections of the genital capsule ( Figs 146–147 View FIGURES 140–149 ) particularly apparent in lateral view ( Fig. 148 View FIGURES 140–149 ), and the different paramere ( Fig. 149 View FIGURES 140–149 ).

Description of male and female terminalia. Male. Genital capsule ( Figs 146–148 View FIGURES 140–149 ) similar to that of A. shensiense , but shape of lateral projections somewhat longer ( Fig. 148 View FIGURES 140–149 ), median incision between projections deeper ( Figs 146–147 View FIGURES 140–149 ); paramere as in Fig. 148 View FIGURES 140–149 .

Female ( Fig. 151 View FIGURES 150–151 ). Female terminalia similar to those of A. shensiense , but posterolateral angles of ventrite VII more produced, ventrite VII a pair of submarginal red patches around U-shaped median incision, and the somewhat larger Pendergrast’s organ of ventrite VII.

Notes. No formal description or illustration of Anaxandra montana (from western and southern Yunnan, China) was presented by Liu (1987), the species was merely diagnosed within a key; no type specimens were designated and no depository of specimens was mentioned. The name was considered as available by Göllner-Scheiding (2006); this is an opinion which we share. No specimens which might possibly be syntypic could be located in TMNH (S.L. Hao, pers. comm.), NKUM and IZAS, the most important depositories of types of S.L. Liu; the specimens are likely lost. Considering the fact that the species was not explicitly indicated as intentionally new and no types were designated in the original description, even if syntypes exist, probably they are impossible to recognize.

Specimens from Yunnan and additional specimens from northern Vietnam fitting rather well with Liu’s (1987) key were examined during the present study and we recognize them as conspecific with Anaxandra montana . However, the very brief and poor diagnosis offered by the key does not allow unambiguous recognition of this species. Therefore, with the express purpose of clarifying the taxonomic status of this nominal taxon, a neotype is designated under Article 75.3. of ICZN (1999).

We select a female from Yunnan for neotype. The specimen is in good condition clearly showing diagnostic characters of the species, and in the same time it comes as nearly as practicable from the original type locality, therefore we recognize it as the specimen available to us that best suits the purpose of neotype designation. The specimen fits in all respect with the diagnosis of Liu (1987). Based on this specimen and additional males and females we present a diagnosis and several illustrations which will allow future identification of the species .

The species is transferred into Acanthosoma as a result of the proposed synonymy between Acanthosoma and Anaxandra .

Distribution. So far only known from mountaneous regions of Southwest China; first country records are provided for Laos and Vietnam in this paper.— CHINA. Yunnan!— LAOS!— VIETNAM. Tuyen Quang Prov.!; Lao Cai Prov.!