Glenognatha dentata, new combination
Creators: name: Jimmy Cabra-García
name: Antonio D. Brescovit
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Tetragnathidae
Glenognatha
Glenognatha dentata

description: Glenognatha dentata (Zhu & Wen, 1978) new combination
(Figs. 38–44, 131)
Dyschiriognatha dentata Zhu & Wen, 1978: 16, figs. 1–9 (female holotype from China, 24.x.1975, presumably deposited in the Jilin University, not examined; paratypes: 33♂ 36♀ 7 immature from China, presumably deposited in the Jilin University, not examined); Hu 1984: 133, figs. 135.1–8; Chen & Gao 1990: 74, figs. 93A–E; Okuma 1991: 15, figs. 1, 2A–F, 3A; Okuma et al. 1993: 31, figs. 28A–C; Song et al. 1999: 213, figs. 119O–R; Zhu et al. 2003: 204, figs. 111A–K, 112A–G, pl.
VIIA–D; Tanikawa 2007: 103, figs. 364–365, 812–814; Tanikawa 2009: 412, figs. 49–51; Cabra-García et al. 2014: 1029, figs. 1E, 2C, 2F, 5D, 7C; World Spider Catalog 2015.
Dyschiriognatha hawigtenera Barrion & Litsinger, 1995: 490, figs. 300A–E, 301A–G (female holotype from Luzon Island, Philippines, 10.viii.1979, A. T. Barrion leg., deposited in the International Rice Research Institute, not examined). Synonymized by Zhu et al. 2003: 204.
Transfer justification. Study of D. dentata specimens collected in Asia (Myanmar, China, Vietnam and Japan) and the schematic drawings of the male genitalia and somatic characters of the original description (Zhu & Wen, 1978), shows that this species has all the synapomorphies of the genus Glenognatha. The conductor and the embolus, although highly modified (Figs. 40, 43D–J), the female genitalia (Figs. 41A–C, G) and the tracheal system (Fig. 41D–F) exhibit the typical Glenognatha morphology.
Diagnosis. Males of G. dentata can be easily distinguished from all other Glenognatha species by the prominent tooth-like projections on the distal retrolateral margin of the conductor (Figs. 40B, 43G). Females are diagnosed by the presence of filiform projections in the membranous chamber (Fig. 41A).
Description. Male and female described by Zhu & Wen (1978). Additional data.
Male (Myanmar, USNM). Habitus as in Figures 38A–D. Cephalothorax with lateral pore-bearing and setaebearing depressions (Fig. 38A, 42A). Cephalothorax 0.77 high. Abdomen 0.88 high. Sternum 0.55 long, 0.55 wide, with setae-bearing depressions (Fig. 42C, H). Chelicerae as in Figures 39A–C, with small setae-bearing tubercles on the antero-ectal surface (Fig. 39C). Cheliceral fang outgrowth well-developed (Fig. 39A). Epiandrous fusules as in Figure 43B. Palp as in Figures 40E–H. Embolus and conductor highly modified (Figs. 40, 43D–J).
Female (Myanmar, USNM). Habitus as in Figures 38E–H. Cephalothorax with lateral pore-bearing and setaebearing depressions (Figs. 38E). Cephalothorax 0.82 high. Abdomen 1.57 high. Sternum 0.52 long, 0.58 wide, with setae-bearing depressions. Chelicerae as in Figures 39D–F, with small setae-bearing tubercles on the antero-ectal surface (Figs. 39F). Tracheal system as in Figures 41D–F. Genitalia with well-developed spermathecae (Fig. 41A– C, G). UE entire (Fig. 41A).
Variation. Male total length 1.6–2.2 (N =4; average 2.0), cephalothorax length 0.8–1.2 (N = 4; average 1.0), femur I length 1.0–1.3 (N = 4; average 1.2). Female total length 2.5–3.0 (N = 7; average 2.7), cephalothorax length 1.1–1.3 (N = 7; average 1.2), femur I length 1.0–1.2 (N = 7; average 1.1).
Distribution. Known from Bangladesh, China, India, Japan, Myanmar, Philippines and Vietnam (Fig. 131).
Additional material examined (N = 18). CHINA: Hong Kong: Tai Po Tsai, [22º20´N, 114º15´E], elev. [7m], 1.iii.1961, E. Shingler leg., 1♀ (AMNH). JAPAN: Okinawa: [26º9´N, 127º53´E], elev. [15m], 22.vii.1945, C. T. Parsons & F. G. Werner leg., 1♂ (MCZ 125497).
New records. MYANMAR: Sagaing: Chattin Wildlife Sanct. Takontaing, 23º37´20´´N, 95º31´52´´E, elev. [179m], 7–12.x1998, Coddington & Baptista leg., 6♀ 3♂ 6 immature (USNM). VIETNAM: no specific locality, 2–20.xi1966, 1♂ (MCZ 84023).
description: Published as part of Jimmy Cabra-García & Antonio D. Brescovit, 2016, Revision and phylogenetic analysis of the orb-weaving spider genus Glenognatha Simon, 1887 (Araneae, Tetragnathidae), pp. 1-183 in Zootaxa 4069 (1) on pages 53-59, DOI: 10.11646/zootaxa.4069.1.1, http://zenodo.org/record/1054149