Synagelides proszynskii Barrion

Alberto T. Barrion, Aimee Lynn A. Barrion-Dupo, Josie Lynn A. Catindig, Sylvia C. Villareal, Ducheng Cai, Qianhua Yuan & Kong Luen Heong, 2016, NEW SPECIES OF SPIDERS (ARANEAE) FROM HAINAN ISLAND, CHINA, UPLB Museum Publications in Natural History 3, pp. 1-103 : 26-27

Synagelides proszynskii Barrion , Barrion-

Dupo & Heong, new species [ Figure 29 A-H]

MALE. Holotype male, total length 3.75 mm. Cephalothorax length 1.80 mm., width 1.30 mm. Abdomen length 2.00 mm., width 0.90 mm.

Carapace. Rough, 1.38x longer than wide, almost parallel-sided, concave between PME and PLE viewed laterally, generally subquadrate except narrowly rounded and sloping posterior end, dark red with black eye margins. Cephalic 2.6x longer than thoracic area. Fovea distinctly deep and transversely inverted C-shaped. Chelicerae small and yellow with two promarginal and a fissidentate retromarginal teeth. Yellow fang very short. Short pedipalps robust and dark brown. Maxillae yellowish brown except whitish yellow hairs in the upper margin and truncated apical margin brown, and longer than wide. Labium wider than long, brown with thin whitish yellow apical margin. Sternum 1.54x longer than wide, yellow with brownish tinge on apical one-fourth, lateral margins and a vertical line on posterior end.

Eyes. In three rows of 4, 2 and 2. Eye length (mm): PLE (1.40)> AE (1.34)> PME (1.09). Eye diameter (mm): AME (0.43)> PLE (0.26)> ALE (0.23)> PME (0.06). Eye separation (mm): PLE-PLE (1.07)> PME-PME (0.97)> ALE-PLE (0.77)> PME -PLE (0.40)> PME-ALE (0.34)> AME-AME =AME-ALE (0.04). Clypeus height narrow, 4.3x AME diameter.

Legs. Yellow with brown trochanter I longer than coxa I. Femur I reddish brown on apical one-fourth and black to dark reddish brown on the enlarged basal one-half. Patella I very long, nearly as long as femur I with enlarged apical one-third and brown ventral longitudinal band. Lateral longitudinal black bands present on prolateral half of femur II, entire prolateral sides of legs III and IV except metatarsi and tarsi. Coxae distinctly cylindrical, I> IV> III> II. Coxa I 2 x longer than wide. Trochanter I prominently cylindrical, 2.55x longer than wide and notched subapically. Femur II slightly longer than III. Tibia I concave at midlength, dark brown towards basal one-third and bears eight long ventral spines arranged in 1-1-2-2-2.Tibia II slightly shorter than III. Metatarsus I very short and bears two ventral and two retrolateral setae, and four dorsal trichobothria. Subapicodorsal trichobothrium the longest. Tarsus I anteapical. Tarsus II as long as III. Leg formula 1432.

Abdomen. Oblong, 2.2x longer than wide, shiny black, smooth and bilobed seen laterally with a transverse whitish yellow median band and subtruncate posterior end. Venter smooth and dark brown. Spinnerets yellow.

Palpal organ with a sharply pointed ventrosubapical triangular spine in femur. Patella very robust, strongly convex retrolaterally, straight prolaterally and 1.33x longer than wide. A small subapicoventral white bulb-like process present in the patella . RTA long and slender with sharply pointed tip. Embolus sigmoidly coiled to the midtip of cymbium. Tegulum bean-shaped and bulge out viewed laterally with femoral spine touching it along basal one-third. Cymbium with posterolateral downwardly pointed process resting on the grooved apicolateral edge of tibia.

FEMALE. Unknown.

Material Examined. Holotype male (coll. no. Ha2011 -1), CHINA, Hainan Island, Haikou, 9 April 2011, ATBarrion, JLACatindig and SCVillareal.

Diagnostic Features. This new species closely resembles Synagelides lushanensis Xie and Yin, 1990 but separated from the latter in the following features, (1) rough and subquadrate carapace 2.6x longer than thoracic area, (2) smooth and bilobed abdomen with a transverse whitish yellow median band, (3) subtruncate posterior end of abdomen, (4) different leg measurements, eye diameter and separations, (5) shape of trochanter I, (6) apically directed and sigmoid embolus, (7) posterior spine of cymbium, (8) very long and slender RTA with pointed tip, and (9) presence of a white "bulb-like" process in the prolateral side of patella .

Etymology. Patronym, in honor and full recognition of Dr. Jerzy Proszynski’s outstanding contributions in the systematics of Salticidae .

Figures

Figure 29 A-H. Synagelides proszynskii Barrion, Barrion-Dupo & Heong, new species, holotype male (A), part of leg I (B), metatarsus I and tarsus I (C), trochanter I (D), pedipalp (E), ventrolateral view of palpal organ and tibia (F), RTA + tibia (G) and base of cymbium (H).