A new species of cavernicolous crab from Coron Island, Palawan, the Philippines (Decapoda: Brachyura: Varunidae) Author Stasolla, Gianluca Museo di Storia Naturale, Sezione di Zoologia “ La Specola ”, Università di Firenze, via Romana 17, I- 50125 Firenze, Italy stasollag@gmail.com Author Innocenti, Gianna Museo di Storia Naturale, Sezione di Zoologia “ La Specola ”, Università di Firenze, via Romana 17, I- 50125 Firenze, Italy gianna.innocenti@unifi.it text Raffles Bulletin Of Zoology 2014 2014-08-08 62 591 599 journal article 10.5281/zenodo.13609085 2345-7600 13609085 http://zoobank.org/urn:lsid:zoobank.org:pub:4B0A7B82-1507-4576-988A-7A0B3710B307 Orcovita angulata Ng, Guinot & Iliffe, 1996 ( Figs. 3 , 4 ) Orcovita angulata Ng, Guinot & Iliffe, 1996: 129 , figs. 2b, 16. Material examined. 1 male (16.2 × 11.7 mm ) ( MZUF 4268 ), Philippines , Coron Island , Pukaway Cave , coll. R . Berti & S . Fig. 1. Orcovita holthuisi , female (12.2 × 9.99 mm) (MZUF 3922). Meggiorini, 15 March 1991 . 592 RAFFLES BULLETIN OF ZOOLOGY 2014 row of rounded granules present just below infraorbital margin on suborbital region, extending to sub-branchial region. Antennules broad. Antennal articles entering orbital hiatus. Eyes developed, cornea pigmented. Epistome ( Fig. 3C ) narrow, posterior margin with one lateral cleft, median part broadly triangular, margin smooth. Third maxilliped ( Fig. 4F ) with broad, stout exopod, as narrow as ischium of endopod, flagellum well developed; ischium stout; merus broad, antero-external angle edge gently granulate, auriculiform. Male chelae ( Fig. 4D, E ) subequal, fingers as long as palm; proximal region of cutting edges of fingers with very small pulvinus. Margins of merus serrated. Carpus rounded, serrated, inner distal angle with low, obtuse tooth. Chelipeds relatively long, surface of articles smooth, without any traces of a longitudinal sulcus; tips of fingers corneous, spoon-like, outer surface of tips of finger with dense, short setae. Ambulatory legs ( Fig. 4G, H ) flattened in cross section, all articles very long, slender; third ambulatory leg longest; surface smooth. Anterior dorsal margin of merus with acute, inconspicuous subdistal tooth; anterior, posterior margins of propodus with short and long setae, respectively; dactylus slender, with acute tip. Dactylus slightly rectangular in cross section, flexor margin comb-like in the first three pereiopods; 3M long, slender (length to width ratio 5.4), 3P long, slender (length to width ratio 5.1), 3D very long, slender (length to width ratio 12.4); 4M long, slender (length to width ratio 4.9), 4P long (length to width ratio 3.2), 4D long, slender (length to width ratio 7.3) (see Table 1). Male abdomen Fig. 2. Orcovita holthuisi , female (10.9 × 9.38 mm) (MZUF 3922). A, carapace; B, dorsal view of the right cheliped; C, dorsal view of 593 width / length) dactylus = D , propodus = P , merus = M ( legs th 4 and rd 3 the For . characters morphological various of Philippines the from Orcovita of species known the among Comparisons. indicated . 1 are Table ratio Stasolla & Innocenti: A new species of Orcovita from the Philippines . sp. n tabiacoud O. 2 broad broad very no setae but long stout absent smooth 1.38 4.33 4.15 6.69 4.07 3.04 5.30 tips cheliped ) male on slender ( broad setae and angulata and short long . O 2 broad acute dense very absent serrated 1.30 5.44 5.14 12.48 4.94 3.22 7.33 ) female ( setae slender low angulata broad soft, and and O. 2 broad very short long weak serrated 1.3 5.4 5.4 16.1 4.6 3.7 6.6 pulvinus the stout on and strong setae short holthuisi . O 3 narrow and acute dense long relatively present smooth 1.2 4.3 3.9 8.1 3.9 2.7 2.2 setae slender fictilia soft, and O. 2 broad broad short long absent granular 1.5 1.3– 5.3 4.2 9.1 4.2 4.4 – – 2.6 3.0 – 6.9 6.2 carpus cheliped ratio the male carapace teeth shape teeth chelipeds legs cristae of length Anterolateral Carapace Anterolateral Male Ambulatory Epigastric Inner margin to Width M P D M P D ( Figs. 3B , 4B ) narrowly triangular; lateral margins covered with short, rare setae; first abdominal somite, distal margin concave, swollen laterally lateral margin; second abdominal somite narrow, short, proximal margin concave; third abdominal somite broad; fourth abdominal somite broader; fifth abdominal somite with proximal and distal margins gently sinuously; sixth abdominal somite with proximal and distal margins slightly convex and concave medially respectively, lateral margins weakly convex; telson with lateral margins weakly concave, distal margin rounded. G1 ( Fig. 4I ) slender, gently curving outwards, reaching to or slightly beyond anterior margin of sternite 5, proximal part swollen; terminal lobe elongate; subterminal lobe densely setose. G2 ( Fig. 4L ) short, small. Colour. Unknown. The preserved specimens are uniformly yellowish white. Fig. 3. Orcovita angulata , male (16.2 × 11.7 mm) (MZUF 4268). 594 RAFFLES BULLETIN OF ZOOLOGY 2014 Fig. 4. Orcovita angulata , male (16.2 × 11.7 mm) (MZUF 4268); A, carapace; B, abdomen; C, epibranchial region; D, dorsal view of right cheliped; E, dorsal view of carpus of cheliped; F, third maxilliped; G, right third ambulatory leg; H, right fourth ambulatory leg; I, 595