Chrysso hyoshidai Barrion, Barrion-Dupo & Heong

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 : 34-35

Chrysso hyoshidai Barrion, Barrion-Dupo & Heong , new species [ Figure 38 A-E]

FEMALE. Holotype female, total length 2.50 mm. Cephalothorax length 0.90 mm, width 0.70 mm. Abdomen length 1.45 mm, width 0.95 mm. Paratype female, total length 3.20 mm.

Carapace. Yellow with a red median U-band and eye margins, 1.3x longer than wide. AME black. Chelicerae yellow with a short yellowish brown and sharply pointed fang. Promargin bears a bifurcate tooth. Retromargin toothless. Pedipalps yellow with a single claw on tarsus. Maxillae yellow, longer than wide, converge apically. Labium dark yellow with a truncate apical margin. Sternum yellow, longer than wide with rounded posterior end.

Eyes. In two rows of four each, strongly recurved AER slightly shorter than procurved PER. Eye diameter (mm): AME (0.10)> PME (0.09)> ALE=PLE (0.06). Eye separation (mm): AME-AME (0.09)> PME-PME (.07)> PME-PLE (0.06)> AME- ALE (0.023). Clypeus height 1.43x AME diameter.

Legs. Yellow, relatively long and slender with few black, long and spatulate spines. Femur I has eight small dotted transverse gray bands ventrally and femur II with one subapicoventral band. Tibiae with two subapical ring gray bands. Anterior tips of metatarsi I-IV black. Tibia I and II with two dorsal spines each, III and IV each with one. Dorsal spines on patella I apical and basal in II, III and IV. Femur I as long as metatarsus I. Leg formula 1423.

Abdomen. White dorsally with a black bottlelike median band and three reddish black transverse bands along cardiac area, basal two of three transverse bands formed transverse U-shaped anterolateral process attached to the black median band. Posterior hump-like and bulbous, bears two pairs of long spatulate spines posterolaterally. Abdomen triangular laterally, white with two black spots apically and yellow basally. Venter uniformly yellow.

Epigynum with a pair of black sickle-shaped bands facing each other and slightly visible rounded spermathecae in uncleared state. Spermathecae rounded with insemination ducts arise slightly midanterolaterally of spermathecae and loops C-shaped posteriorly developing two to three coils prior to the fertilization duct.

MALE. Unknown.

Material Examined. Holotype female (coll. no. Da 2010-4), CHINA, Hainan Island, Danzhou, 9- 13 August 2010, ATBarrion and SCVillareal, and one paratype female (coll. no. Da5), 4 April 2011, ATBarrion, JLACatindig and SCVillareal; Haiko, one paratype female (coll. no. a 2011-9) 9 April 2011, ATBarrion, JLACatindig and SCVillareal.

Diagnostic Features. This species closely resembles Chrysso spiniventris (O. P.-Cambridge, 1869) and C. lingchuanensis Zhu , and Zhang, 1992 but differs from both taxa in the following features, namely, (1) more truncated posterior end of abdomen, (2) presence of a red U-band on carapace, (3) only two pairs of abdominal spines posterolaterally, (4) slightly midanterolateral origin of insemination ducts from spermathecae, (5) femur I as long as metatarsus I, and (6) presence of a "bottle-like" black dorsal band on midabdomen.

Etymology. Patronym, in honor of Dr. Hajime Yoshida’s magnificent contributions in the systematic of Japanese Theridiidae and nearby countries.

Figures

Figure 38 A-E. Chrysso hyoshidai Barrion, Barrion-Dupo & Heong, new species, cephalothorax (A), dorsal (B) and lateral (C) views of abdomen, ventral (D) and dorsal (E) views of epigynum.