Oedothorax myanmar, Tanasevitch, Andrei V., 2017

Tanasevitch, Andrei V., 2017, New species and new records of linyphiid spiders from the Indo-Malayan Region (Araneae, Linyphiidae), Zootaxa 4227 (3), pp. 325-346 : 339-340

Oedothorax myanmar new species

Figs 6, 7 , 43–47

Holotype male ( SMF), MYANMAR , southern Chin State, above Kampetlet, below Mountain Oasis Resort , 21°11’43.6”N 94°02’1.1”E, 1585 m a.s.l., secondary forest along stream, by hand & sifting, at day; 17.V.2014; P. Jäger leg.

Etymology. The specific name is a noun in apposition referring to the terra typica of the new species.

Diagnosis. The new species is diagnosed by the poorly modified carapace, i.e. absence of high elevation(s) or specific structures, by the spoon-shaped distal suprategular apophysis, and small, S-curved embolus. The poorly modified carapace and the conformation of the male palp somewhat resemble those in O. kodaikanal Tanasevitch, 2015 , from the highlands of Tamil Nadu, India ( Tanasevitch 2015). The new species is distinguished from O. kodaikanal by a much larger convector that clearly protrudes forward.

Description. Male holotype. Rather large Erigoninae , total length 2.13. Carapace 0.90 long, 0.70 wide, slightly modified: head part slightly elevated and bearing short spines ( Fig. 6 ); pale brown, with indistinct, grey, radial stripes. Chelicerae unmodified, 0.45 long. Legs yellow. Leg I, 3.00 long (0.80+0.25+0.75+0.70+0.50), IV, 3.20 long (0.85+0.25+0.80+0.85+0.45). Chaetotaxy 2.2.1.1, length of spines about 1–1.5 diameters of segment. Each metatarsus with a trichobothrium. TmI, 0.50. Palp ( Figs 43–47 ): Tibia elongated, with a very small denticle apically and a wide, rounded, darkened outgrowth retrolaterally. Paracymbium L-shaped, bearing several strong spines on distal lobe. Distal suprategular apophysis with a rounded hollow, spoon-shaped. Distal apophysis of convector well protruded forward. Embolus relatively short, thick, S-curved. Abdomen ( Fig. 7 ): 1.13 long, 0.75 wide, dorsally pale, with three pairs of large, grey, paramedian spots.

Female. Unknown.

Distribution. Only known from the type locality in Myanmar .

Figures

FIGURES 1 – 7. Asiagone komannai n. sp., male holotype from Ko Man Nai (1, 2). 1, Habitus. 2, Carapace, frontolateral view. Erigone sumatrana n. sp., male paratype from Kersik Tua (3). 3, Carapace, lateral view. Gnathonarium luzon n. sp., male holotype (4) and female paratype (5) from Mt Makiling. 4, Carapace, lateral view. 5, Epigynum, ventral view. Oedothorax myanmar n. sp., male holotype from Kampetlet (6, 7). 6, Carapace, lateral view. 7, Habitus. Scale bars: 1, 2, 4, 6, 7; 3, 0.5 mm; 5, 0.1 mm.

FIGURES 43 – 47. Oedothorax myanmar n. sp., male holotype from Kampetlet. 43, 44, Right palp, retrolateral and prolateral views, respectively. 45, Palpal tibia and paracymbium, posterolateral view. 46, Distal suprategular apophysis. 47, Distal suprategular apophysis and embolic division. Scale bars: 0.1 mm.