Castianeira tiranglupa, Barrion & Litsinger, 1995

Barrion, A. T. & Litsinger, J. A., 1995, Family Clubionidae Wagner- Genera Alaeho, Castianeira, Agroeca, Phrurolithus & Scotinella, Riceland Spiders of South and Southeast Asia, Oxon, UK: CAB International, pp. 170-180 : 172

Castianeira tiranglupa new species

( Fig. 98 a-f)

Description: Male: Total length 7.50 mm Cephalothorax 3.50 mm long, 2.05 mm wide, 1.63 mm high. Abdomen 4.00 mm long, 1.90 mm wide, 2.08 mm high. Cephalothorax reddish brown except black longitudinal fovea and inner part of eye area and margins, widest between coxae II and 111 and moderately narrow toward both ends. Lateral margins of the cephalic area almost straight and not much higher than the posterior end of the thoracic area, with a truncated end. Eye area and vicinity with long hairs. Eight eyes in two rows, AE moderately recurved and PE slightly procurved to straight. Eye diameter (mm): AME = 0.16, ALE = 0.15, PME = PLE = 0.13. Eye separation: AME-AME 0.8 eye diameter, AME-ALE 0.40 AME diameter, PME-PME 1.25 AME diameter, PME-PLE as long as one PME or 0.80 AME diameter. Median ocular quadrangle wider than long, anterior part a little narrower than the posterior part. Clypeus height moderately large, 1.25 times AME diameter. Sternum same color as cephalothorax, longer than wide, hirsute and each hair arises from a shallow pit, anterior margin with a truncated notch below labium, posterior end narrows to a blunt point. Labium broadest at midhalf, apical one fourth yellow, distal margin truncated. Maxillae reddish brown except yellow base of scopulae, longer than wide. Chelicerae short and robust, promargin with three teeth and scopulae, retromargin with two teeth of equal size. Legs long and slender, brown with reddish brown femora I-IV and leg IV except tarsi. Spination in femora I = 3-0-2-0 II = 3-0-2-0, III = 3-0-3-2, and IV = 3-0-3-1; tibia I = 1-6-0-0, II = 1-6-1-0, III = 1-5-2-2, and IV = 1-6-2-2. metatarsi I = 0-4-0-0, II = 0-4-0-0, III = 0-5-2-3, and IV = 0-5-3-3. Dorsal spines of patella very weak, similar to dorsal spines in tibia I and 11. Leg formula 4123. Pedipalp same color as patellae I and 11, about as long as femora I, tibiae with two long promarginal spines, embolus spiral and partly hooked, ejaculatory duct with two opposing basal loops, paracymbium very minute.

Length ofleg and pedipalp segments (mm):

Abdomen highly sclerotized (scutum-like) except unsclerotized posterior end, same color as cephalothorax, anterior end narrow and cleft medially, posterior end tapers and broadest in the posterior one third. Venter slightly less scletorized than the dorsum. Anterior pair of spinnerets more robust than the posterior.

Etymology: Name derived from the habitat of the species in Tagalog.

Natural history: One male was found running on the ground in a slash-and-bum upland rice field in August.

Material examined: PHILIPPINES: Luzon Is., Quezon Prov., Real, Llavac Vill ., holotype male, 7 August 1984, A.T. Barrion .

Distribution: Philippines.

Figures

Fig. 98. Male Castianeira tiranglupa n. sp. (a); cheliceral teeth (b); sternum, labium, and maxillae (c); and lateral (de) and ventral (f) views of pedipalp