Trachypauropus lusitanicus, Scheller, Ulf, 2014

Scheller, Ulf, 2014, New records of Pauropoda (Myriapoda) with descriptions of new taxa, Zootaxa 3866 (3), pp. 301-332 : 325-327

Trachypauropus lusitanicus n. sp.

Figs 61–70

Type specimen. Holotype: ad. 9(♀), Portugal, W of Lisboa, Parque de Sintra, June 11, 2012, in litter under deciduous trees, W. Niedbala leg. Type specimen deposited in the Zoological Museum, University of Lund, Sweden.

Non type specimens. Same data as holotype, 6 subad. 8 (♀), 7 juv. 6, 1 juv. 3.

FIGURES 61–70. Trachypauropus lusitanicus n. sp., holotype ad. 9 (♀). 61. Left antenna sternal view. 62. Collum segment, median and left part, sternal view. 63. Tergite I, central part. 64. Tergite II, right posterior corner. 65. Tergite VI. Left posterior corner. 66. T 1. 67. T 3. 68. Seta of trochanter of leg 9. 69. Tarsus of leg 9. 70. Pygidium, sternal view. Scale: a: 66–69; b: 61. 62; c: 63–65, 70.

Diagnosis. The new species is well delimited by the occurrence of two anterior setae on the median process of the collum segment, the shape of the a -setae of the pygidial tergum, a 1 short, pointed, a 2 scutellate, a 3 long, pointed, and the shape of the anal plate, lateral appendages straight and directed posteriorly. The affinities of the species are not possible to trace from the present knowledge of the genus.

Derivation of name. A Latinised adjective of Lusitania = Portugal, referring to the collecting site.

Description. Length. 1.01 mm.

Head. Setae not available for study.

Antennae (Fig. 61). Chaetotaxy of segments 1-4: 2/2/3/4; segment 3 with distinct globulus g´. Relative lengths of setae of 4th segment: p = 10, p´= 11, p´´= 9, r = 6, all thin, pointed, annulated. Sternal branch s, anterior margin = 35, posterior margin = 29, diameter of base = 10, maximum diameter = 16, length of globulus g = 31, diameter = 9 µm, stalk cylindrical, number of bracts ≈12, lengths of bracts ≈ 7, capsule length = 4, diameter =6, q = 27 µm. Anterior margin/length of g = 1.1, anterior margin/length of q 1.1, anterior margin/posterior margin 1.2, anterior margin/maximum diameter = 2.2, maximum diameter/diameter of base =1.6. Tergal branch t subcylindrical, widest in distal half, length = 36, diameter of base = 8, maximum diameter = 10, distance base to pore not studied, length of t/ maximum diameter = 3.6 µm. Flagella, length: F 1 = 63, F 2 = 42, F 3 = 65, bs 1 = 9, bs 2 = 10, bs 3 =7 µm. Calyces glabrous, those of F 1 helmet-shaped, those of F 2 and F 3 conical with distinct point.

Trunk (Figs 62, 65). Setae of collum segment similar, short, simple, annulated. appendages short with rounded distal cap, glabrous, no collar; sternite process cut squarely anteriorly and with two short annulated setae protruding anteriorly from anterolateral corners.

Tergites with two types of protuberances: 1. Large, curved, pointed spines pointing backwards from posterior part of oval glabrous areas, most lateral spines, largest, probably winged; 2. Numerous small, conical, blunt protuberances evenly distributed all over the surface.

Bothriotricha (Figs 66–67). Bothriotricha T 1 (Fig. 66), T 2 and T 4 with very thin axes and sparse, short erect pubescence, in whorls distally, T 3 (Fig. 67) clavate, distal 1/3 thickened, pubescence distinct, hairs curved, oblique, T 5 proportionately thick and with oblique pubescence hairs not arranged in whorls,

Legs (Figs 68, 69). Legs 1 and 9 5-segmented, tarsi divided in intervening pairs, legs there 6-segmented. Setae on coxa and trochanter (Fig. 68) of all legs furcate with rudimentary secondary branch, primary branch short, cylindrical, blunt, striate. Tarsus of leg 9 (Fig. 69) almost cylindrical, 4.1 times as long as the greatest diameter, only one tergal seta placed near the middle, seta pointed, glabrous, length 0.2 of the length of the tarsus. All legs with large main claw and small anterior secondary claw. Length of main claw of leg 1 0.2 of the length of the tarsus, 0.3 in leg 9.

Pygidium (Fig. 70). Tergum: Posterior margin curved roundly but with low lobe between setae st; a -setae of different shape, all glabrous, a 1 and a 3 tapering pointed, the former short, the latter much longer and with thick base, a 2 scutellate, length a 1 = 5, a 2 = 13, a 3 = 20, st = 1, a 1- a 1 = 20, a 2 - a 2 = 45, a 3 - a 3 = 66, st – st = 18 µm; st-st/a 1- a 1 = 0.9, a 1/ a 1- a 1 = 0.2, a 1/ a 1- a2 = 0.3, a 1- a 1/ a 2 - a 3 = 0.3.

Sternum: Low broad lobe with small median incision between setae b 1. These setae glabrous pointed, b 2 and b 3 pointed too and with sparse oblique pubescence, b 3 very thin; b 1 = 32, b 2 = b 3 = 12, b 1 - b 1 = 30, b 2 - b 2 = 51, b 3 - b 3 = 10 µm; b 1- b 2 = 22, b 2 - b 3 = 18 µm; b 1 - b 1/ b 1 = 0.9, b 1 / b 2 = 3.7.

Anal plate lyrate and divided into four straight posteriorly directed cylindrical branches: two thin lateral ones being shortest, 0.4 of the length of the plate, and two submedian ones, longer, thicker, widened a little at distal ends, there cut obliquely with inner side somewhat lengthened, each branch with a bladder-shaped and distinctly pubescent appendage with thin stalk proceeding from an excavation in the obliquely cut end of the branch, length of bladders 0.4 of the length of submedian branch.