Insulamon johannchristiani, Freitag, 2012
publication ID |
https://doi.org/ 10.5281/zenodo.4508437 |
persistent identifier |
https://treatment.plazi.org/id/353E4D58-A67C-B500-FF0D-1BE4FABBFC9A |
treatment provided by |
Carolina |
scientific name |
Insulamon johannchristiani |
status |
sp. nov. |
Insulamon johannchristiani View in CoL new species
( Figs. 8 View Fig A–D, 9A–H, 13H–I)
Type locality. — Lake Manguao catchment, Taytay Municipality, Palawan Island, Philippines
Palawan, Taytay, Bato, mountain creek near highway, secondary forest, shallow, rocks, sand, CPOM, c. 80m asl, 10°44'56"N, 119°30'20"E (101), coll. H. Freitag, 22 Aug.2007; 1 male (34.2 by 26.8 mm) (SMTD-Crustac-S112), Palawan, Taytay, Bato, mountain creek, degraded primary forest, rocks, sand, CPOM, riffle & fall, 10°44'57"N, 119°30'09"E (122), coll. H. Freitag, 6 Nov.2007; 3 males (33.6 by 26.2 mm, 27.1 by 20.6 mm, 23.1 by 17.8 mm) (SMF-38298), Palawan, Taytay, Poblacion, Tubog Creek tributary, public water source/ shallow spring, leaves, gravel, 10°49'02"N, 119°30'53"E (65), coll. H. Freitag, 21 Apr.2007; 1 male (31.1 by 24.0 mm) ( WPU), Palawan, Taytay, Poblacion, small hill stream, c. 4 km SE town proper, rocks, sand, leaves, degraded forest, c. 15 m asl, c. 10°48'05"N, 119°33'02"E (100), coll. H. Freitag, 21 Aug.2007; 1 male (29.7 by 22.0 mm) (NHMW-25177), Palawan, Taytay, Abongan, Ibangley, Abongan River tributary, highway km 178, shallow, sand, CPOM, 10°37'36"N, 119°23'07"E (108), coll. H. Freitag, 28 Sep.2007; 2 males (25.2 by 19.5 mm, 24.9 by 19.5 mm) (ZMUC-CRU-10085), Palawan, El Nido, road to Taytay, 0.5 km S of town proper, small creek, semi-primary forest, c. 10 m asl, 11°10'29"N, 119°23;39"E (70), coll. H. Freitag, 5 May 1995; 1 male (20.6 by 15.8 mm), 1 female (34.8 by 25.7 mm) (SMTD- Crustac-S113), Palawan, El Nido, Villa Libertad, small creek near Type material. — Holotype: male (38.5 by 28.7 mm) (NMCR- 39016), Palawan, Taytay, Poblacion, Manguao, W spring Enolbong Creek , temporary mountain tributary N coast, primary forest, rocks, gravel, CPOM, c. 20 m asl, 10°46'40"N, 119°32'19"E (121b), coll. H. Freitag, 5 Nov.2008. GoogleMaps
Paratypes: 1 male (28.8 by 21.6 mm) ( PCSD), same label as holotype ; 1 male (34.5 by 26.9 mm) ( ZRC 2010.0339 View Materials ), Palawan, Taytay; road to Lake Manguao, Manguao Stream tributary, primary forest, c. 35 m asl, 10°47'N, 119°31'E (13b), coll. H. Freitag, 29 Apr.2008 GoogleMaps ; 1 female (27.4 by 20.7 mm) (NMCR-39017), Palawan, Taytay, Poblacion, Southern Manguao Stream tributary, primary forest, c. 30 m asl, 10°46'00"N, 119°30'43"E (63a), coll. H. Freitag, 16 Apr.2008 GoogleMaps ; 1 female (25.9 by 19.7 mm) (SMTD-Crustac-S107), Palawan, Taytay, Southern Manguao Stream tributary, primary forest c. 30 m asl, 10°46'17"N, 119°30'55"E (63b), coll. H. M. Macmac, 19 Aug.2007 GoogleMaps ; 1 ov. female (27.2 by 22.0 mm) (SMTD- Crustac-S108), same locality as previous specimen, coll. H. Freitag, 19 Aug.2007 GoogleMaps ; 2 males (32.2 by 24.2 mm, 31.2 by 24.0 mm) ( ZRC 2010.0340 View Materials ), Palawan, Taytay, Poblacion, Manguao , Malarad Creek , tributary NE coast, degraded primary forest, rocks, boulders, gravel, CPOM, c. 20 m asl, 10°46'22"N, 119°33'36"E (120), coll. H. Freitag, 4 Nov.2008 GoogleMaps ; 3 males (26.3 by 20.5 mm, 20.0 by 15.0 mm, 19.6 by 15.2 mm) (SMTD-Crustac-S109), Palawan, Taytay, Poblacion, Manguao , Mechico Creek , temporary tributary N coast, degraded primary forest, boulders, gravel, sand, CPOM, c. 20 m asl, 10°46'37"N, 119°33'14"E (119), coll. H. Freitag, 4 Nov.2007 GoogleMaps ; 2 males (29.0 by 21.4 mm, 23.6 by 17.8 mm) (SMTD-Crustac-S110), Palawan, Taytay, Poblacion, Manguao , small waterfall, W coast, secondary forest, c. 20 m asl, 10°46'07"N, 119°31'40"E (14), coll. H. Freitag, 15 Sep.2008 GoogleMaps ; 1 female (28.2 by 21.4 mm) (SMTD- Crustac-S111), Palawan, Taytay, Manguao tributary W Sinangalit Stream, residual pool, rocks & leaves, c. 20 m asl, c. 10°46'46"N, 119°31'05"E (73b), coll. A. Norte, 28 Sep.2008 GoogleMaps ; 1 male (31.2 by 24.2 mm), 1 ov. female (26.9 by 20.8 mm) ( ZRC 2010.0341 View Materials ), dump site, secondary forest, rocks, sand, CPOM, fall & pool, c. 50 m asl, c. 11°12'N, 119°26"E (113b), coll. H. Freitag, 15 Oct.1994 ; 1 male (23.6 by 18.0 mm) ( ZRC 2010.0342 View Materials ), Palawan, El Nido, Pasadeña, Sitio Kalanpinay, Bulalacao Falls , degraded primary forest, rocks, gravel, c. 100 m asl, 11°13'18"N, 119°27'52"E, coll. H. Freitag, 15 Oct.1994 GoogleMaps .
Other material. — 1 juv. male (13.3 by 10.2 mm) (SMTD-Crustac- S114), Palawan, Taytay, Poblacion, Manguao, W spring Enolbong Creek , temporary mountain tributary N coast, primary forest, rocks, gravel, CPOM, c. 20 m asl, 10°46'40"N, 119°32'19"E, coll. H. Freitag, 5 Nov.2008 GoogleMaps .
Diagnosis. — Carapace ( Figs. 8A, B View Fig ) c. 1.31–1.40 times as broad as wide, moderately high; anterior-lateral branchial regions swollen; cervical grooves moderately deep; suborbital margin ventrally dilated, not oblique; epigastric cristae slightly projected over postorbital cristae; mesogastric cristae conspicuous and rather high; progastric, mesogastric, cardiac and intestinal regions convex; medio-posterior carapace margin slightly convex in dorsal view.
Male abdominal somites ( Fig. 8C View Fig ) moderately broad; telson c. 1.2 as broad as long; sixth abdominal somite c. 1.6–1.9 times as broad as long; telson c. 1.1–1.2 times as long as sixth abdominal somite in males, approximately of same length in females ( Fig. 8D View Fig ).
Mandible with deep incision opposite of palp incertation; terminal segment of palp rather short and broad, evenly tapering towards apex. Second maxilliped ( Fig. 9B View Fig ) exopod rather flat, partly membranous, lateral margin broadly indented at about half length; propodus distinctly longer than broad, outer distal margin of carpus protrudingly dilated. Third maxilliped ( Fig. 9A View Fig ) with dactylus about 1/5 longer than carpus; propodus about 1/5 shorter than carpus; merus more than 2/3 as long as broad, margins slightly curved, edges rather sharp.
Larger cheliped in adult males broad; dactylus at least half as broad as chela length.
G1 ( Fig. 9 View Fig D–H) stout, sinuously bent; distal part of terminal segment hook-like curly and attenuate, twisted towards ventral side; tip perpendicularly contorted from the longitudinal axis; base of terminal segment dilated, broader than distal subterminal segment, sub-proximally inflated; collar distinctly, but not cuneatly protruding dorsally; ventral collar region conspicuously broadly notched. G2 with flagellum c. 0.4–0.5 times as long as basal segment; enlarged proximal portion of basal segment rather broad and subtriangular ( Fig. 9C View Fig ).
Remarks. — The species is best distinguished from other representatives of the genus by the G1 that combines characters of I. magnum, new species, and I. palawanense , new species, but is unique in the attenuate, hook-like curly tip of the terminal segment (versus straight or subclavate to hamulose tip in the other species). Externally, it can be distinguished by the somewhat inflated carapace (progastric, mesogastric, cardiac and intestinal regions convex versus slightly convex or almost flat; branchial region swollen versus more or less convex in all other species). Furthermore, it varies respectively from the abovementioned species by the broad carapace (1.31–1.40 times as broad as wide versus 1.23–1.29 in I. magnum, new species), the more conspicuous and slightly higher mesogastric cristae and the slenderer male sixth abdominal somite (≤1.9 times as broad as wide versus ≥ 1.9 in I. palawanense , new species).
The G1 and G 2 in juvenile male specimens ( Fig. 9G, H View Fig ) are straighter and less sinuously curved. Their distal part of the G1 terminal segment is relatively broader and stouter, already distinctly curly, but not yet hook-like and the G1 collar is less developed and less protruding.
Etymology. — Named after Johann Christian Freitag, Schwerin, Germany
Distribution. — Northern Palawan Island
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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