| OCR Text |
Show 21 rs Key to Philippine Species of Platyrhacus 1a. Gonopods band. . with . . . . one . . . single terminal branch; dorsum . • . . . • . . . • . . . . • . . . . . . with . . . . a . yellow dorsal longitudinal . . . . . . . dorsalis Peters. .. 2 Gonopods with two terminal branches; dorsum with no such longitudinal band. 3 Both telopodial branches of gonopods very different in length. The two branches of gonopods subequal in length; female with the sternite of the second leg-bearing segment bearing a small middle projection Mindanaonus N. Spa The two branches of gonopods subequal in length; upon the midregion of the femur, there are one long and one short lateral branches in addition. bifidus Takakuwa Black; vertigal sulcus on head deep; the acute tip of the principal branch of .. gonopods recurved philippinorum Chamqerlin. Dark brown or brown; vertigal sulcus slight; the acute tip of the principal branch 4 of gonopods with no secondary curvature I. .. Dark brown; the accessory branch pointed and not toothed margaritiferus Gervais. bakeri N. Sp. Brown; the accessory branch not pointed but broadly toothed laterally lb. 2a. n . . . 2b. . . . . . . • • • . • . . . .. . • . .. •.... 2c. 3a. . 3b. . . . . . . . . . • . . . . . . . . . . ....•.. 4a. IllB . . . . • • • . . • • • . . . • • • .. • • • • • • • • • •• ....• 4b. ...• 18. Platyrhacus dorsalis Peters Figs. 63 69. 1864 Polydesmus (Stenonia) dorsalis Peters, Mon. Ber. Akad. Wiss. Berlin, p. 544. 1897 Ilodesmus whiteheadi Pocock, Ann.· & Mag. Nat. Hist. (6) XX, p. 419. 1898 Platyrhacus dorsalis Attems, Syst. der. Polydes. II, p. 342. Locality: Luzon, Negros. Type: 1 male holotype in Berlin Museum (No. 240) F. Jagorj 2 female plesiotypes and 1 male plesiotype in Dr. Chamberlin's collection, University of Utah. (J. W. Chapman from Negros, - P. I. No. 30-32). plesiotypes are as follows: total length, females 84-98 mm., females 5.5 to 7 mm., male 5 mm.; width of head, females 9 to head, of length collum, females 4 to' 6 mm., male 3 mm.; width of collum, females 9 to 10.5 mm., male 8 mm.; length of second plate, females 3 to 5 mm., male 2.5 mm.; width of second plate, females 12 to 15 mm., male 10 mm.; length of pygidium, females 3 to 4 The measurements of three male 67 mm.; length of 10.5 mm., male 8 mm.; mm., male 2.5 mm.; width of pygidium, females 3 to 4 mm., male 3 mm.; length of antennae, females 6 to 9.5 mm., male 7 mm.; length of first pair of legs, females 9.5 to 11 mm., male 8.5 mm. 19. Platyrha.cus philippinorum Chamberlin Figs. 70-71. 1921 Chamberlin: Ann. & Mag. Nat. Hist. Sere 9, Vol. 7, p. 85. Locality: Luzon, Mt. Makiling, Los Banos (C. F. Baker). Types: holotype M.C.Z. No. 4666, Paratype No. 4667; plesiotypes: 3 males (P.I. No. 38, 39, 45), 2 females (P .1. No. 40, 44) . all in Dr. Chamberlin's collection. The measurements of the plesiotypes are given below: total length, males from 69 to 86 mm., females from 70 to 80 mm.; length of head, males 5 to 6 mm., females 5 to 6 mm.; width of head, 7 to 8 mm.; length of collum, males 5 mm., females 4.5 to 5 mm.; width of collum, males 7 to 8 mm., females 8 mm.; 'length of second plate, males 2.5 to 3 mm., females 3 mm.; width of second plate, males 11 to 12 mm., females 11 to 13 mm.; length of pygidium, males . from 3.5 to 4.5 mm., females 4 mm.; width of pygidium, males from 3.5 to 4 mm., females 4 mm.; length of antennae, males 7 to 9 mm., females from 8 to 8.5 mm.; length of the first pair of legs, males from 7 to 8 mm., females 7 mm. 20. Platyrhacus atratus Pocock Pocock, Ann. & Mag. Nat. Hist. (6) XX, 1898 Platyrhacus atratus Attems, Syst. der. Polydes. II. p. 328. Locality: Palawan Islands. 1897 Polydesmorphachis atratus p. 446. |
