Borneopauropus dignus, , Scheller, 2009

Scheller, Ulf, 2009, New species of Pauropoda (Myriapoda) from Tasmanian temperate rainforests, Memoirs of Museum Victoria 66 (2), pp. 289-329 : 325-328

Borneopauropus dignus sp. nov.

( Figs. 192 –206)

Material Examined. Holotype. Ad. 9 (male), Savage River Pipeline Road , site 2, Loc. 1, (41°18.5'S, 145°16.3'E), in litter, 21.iv.1989 ( PG).

Paratypes. Sandspit River, Loc. 8, (42°42.1'S, 147°51.5'E), PKD from Sassafras , 1 ad. 9 (female), 2.vi.1989 ( JD, PG) . Bradshaw’s Road, Mount Murchison , Loc. 2, (41°49.9'S, 145°37.0'E), site 2, in leaf litter, 3 ad. 9 (2 male, 1 female), 1 subad. 8 (female), 21.iv.1989 ( JD) .

Other material. 55 specimens. Loc. 1, site 1, in moss on ground, 1 ad. 9 (female), 21.iv.1989 ( HM), and in leaf litter , 2 ad. 9 (male), 21. iv.1989 ( JD, HM), and site 2, in moss on log , 4 ad. 9 (female), 1 subad. 8 (female), 21.iv.1989 ( JD, HM), and in moss on Nothofagus , 6 ad. 9 (2 male, 4 female), 1 juv. 5, 21.iv.1989 ( JD), and on moss on ground , 1 ad. 9 (female), 21.iv.1989 ( PG). Loc. 2, site 1, in moss on ground , 1 juv. 5, 21.iv.1989 ( HM), and in leaf litter , 4 ad. (2 male, 2 female), 1 subad. 8 (male), 21.iv.1989 ( PG). Loc. 6, in moss on log , 1 juv. 5, and in moss on tree trunk, 3 ad. 9 (1 male, 2 female), 1 subad. 8 (female), 4 juv. 5, 11.vi.1990 ( ATW). Loc.7, site 2, in leaf litter , 6 ad. 9 (female), 10 juv. 5, 12.v.1989 ( PG). Loc. 8, in leaf litter , 1 ad. 9 (male), 1 subad. 8 (male), 22.v.1989 ( PG) and suction sample , 1 ad. 9 (female), 2.vi.1989 ( JD). Loc. 13, litter , 2 ad. 9 (male, female), 1 subad. 8 (female), 1 juv. 5, 27. ii.1989 ( SS). Loc. 17, soil core , 1 ad. 9 (male), 5.vi.1989 ( PG) .

Diagnosis. The genus has three species, B. penanorum (Scheller) and B. prolatus (Scheller) , both from Sabah (in Scheller et al. 1994 and Scheller, 2001 respectively), and B. curtipes Scheller from Indonesia ( Scheller 2009). The Tasmanian species is well delineated from them all in having the tergites II-IV transversely divided (II, IV, V in penanorum, II, IV in prolatus , II-V in curtipes ). It can also be distinguished from them by other good characters. There are three long uplifted posterior extensions of the temporal organs (in penanorum and prolatus two, one large and one very small), the process of the collum segment is very narrow (broader and rounded in penanorum and prolatus , broad and with distinct anterior incision in curtipes ), the posterior end of the anal plate is cut squarely (triangular in penanorum and curtipes , cylindrical and blunt in prolatus ), and the appendages of the anal plate have distinct distal swelling (distally cylindrical in the other species).

Description. Length. (0.58-)0.68(-0.85) mm.

Head. Tergal and lateral sides with 28 setae arranged as in Figs. 192. and 193 ; transversal rows difficult to interpret. Relative lengths of the five submedian setae: 10, 13, 16, 20, 21; lateral group: l 1 large bladder-shaped, relative length = 18; l 2 subclavate = (12-)18, l 3 subcylindrical striate-annulate tapering pointed = 52. All tergal and lateral setae except l 2 and l 3 bladder-shaped with distinct and proportionally sparse oblique pubescence. Temporal organs complicated (fig. 193), longish, running along from mouth to posterior part of head; anterior end with short uplifted lobe close to the mouth; posterior part twice furcate ending in three narrow tubes with subcircular diameter, the upper tube shortest and curved posteriorly, the median one straight, the sternal one curved upwards; between the latter two a low cupulate organ with a short inner conical structure; on the tergal side of the longish median part a small protuberance from which a wart-like pubescent process protrudes from the head cuticle. Tergal side of head sparsely granular, temporal organs glabrous.

Antennae. Segment 3 with a rudimentary globulus and four setae, one clavate, distinctly pubescent and 3 subcylindrical annulate setae. Segment 4 with 5 setae, all thin cylindrical annulate; relative lengths of them: p =100, p' =(118-)150(-168), p'' =(100-)130, p''' =(37-)69, r =50. Tergal seta p 0.4(-0.5) of the length of tergal branch t. The latter subcylindrical, (3.1-)3.6 times as long as wide, (as long as-)1.1 times as long as sternal branch s. The latter thickest in distal third and with anterodistal corner somewhat more truncated than posterodistal one; (1.8-)2.3 times as long as its greatest diameter and its seta q cylindrical annulate, 0.6(-0.7) of the length of s. Relative lengths of flagella (basal segments included) and basal segments: F 1 =100, bs 1 =7(-8); F 2 =81(-92), bs 2 =(6-)7(-8); F 3 =79(-88), bs 3 =6(-8). The F 1 (3.3-)3.4(-3.6) times as long as t, F 2 and F 3 (2.6-)3.0(-3.2) and (2.6-)2.9(-3.0) times as long as s respectively. Distal calyces low, helmet-shaped, glabrous. Globulus g with slender stalk, (2.1-)2.2(-2.4) times as long as its greatest diameter, the latter (0.8-)0.9(-1.0) of the greatest diameter of t. Antennae with g and bs 1 -bs 3 with short pubescence.

Trunk. Setae of collum segment furcate, primary branch cylindrical, blunt, annulate; secondary branch rudimentarily glabrous; sublateral seta 1.1(-1.3) times as long as submedian one. Sternite process very narrow in anterior half and with apical incision; appendages with low caps; process and appendages shortly pubescent.

Figs. 198–206. Borneopauropus dignus, Scheller sp.nov., holotype 198–200, 203–206, paratypes 201, 202: 198, T 1; 199, T 3; 200, T 5; 201, genital papillae and seta on coxa of 2nd pair of legs, anterior view; 202, genital papillae and seta on coxa of 2nd pair of legs in subad. 8, anterior view; 203, seta on coxa of 9th pair of legs; 204, tarsus of 9th pair of legs; 205, pygidium, sternal view; 206, anal plate, lateral view. Scale line a for figures 198, 200, 202; b for figures 199, 201; c for figures 203, 204; d: for figures 205, 206.

Tergites I, V, VI entire, II, III, IV transversely divided weakly in two. Number of setae on tergites (if two groups of values, they are anterior and posterior groups respectively: I (29-)31(-37), II 17(-24)+20, III (23-)26(-27)+(18-)24, IV (21-)28+(14-)17(-28), V 34(-40), VI 6+4. Setae bladder-shaped with distinct oblique-erect pubescence, stalk inserted unsymmetrically. Cuticle of tergites pubescent.

Relative lengths of bothriotricha: T 1 =100, T 2 =98(-105), T 3 =(78-)81(-82), T 4 =(99-)110, T 5 =(88-)89(-92), axes simple, most proximally glabrous; proximal half of T 3 strongly clavate, distal half very thin; other bothriotricha with thin and curved axes; pubescence short oblique on proximal halves, erect distally; clavate part of T

3

with pubescence arranged in sparse whorls.

Genital papillae, 1.2 times as long as their greatest diameter, widest near the middle, glabrous; seta almost 0.5 of the length of papilla.

Legs. All legs 5-segmented. Setae on coxa and trochanter of leg 9 similar, simple, cylindrical, densely annulate, blunt, without traces of secondary branches. More anteriorly these setae of the same shape, but with short cylindrical glabrous rudiments of secondary branches. Tarsus of leg 9 short, tapering, 1.8(-2.7) times as long as its greatest diameter. Proximal seta tapering, pointed, with a few oblique pubescence hairs on tergal side; distal seta cylindrical, striate, blunt; the former 0.2(-0.3) of the length of tarsus and (0.9-) as long as the latter. Cuticle of tarsus with delicate pubescence.

Pygidium. Tergum. Hind margin with a shallow incision between a 1. Relative lengths of setae: a 1 =10, a 2 =12(-15), a 3 =13(-18), st =2(-4). All but st bladder-shaped, st very short, (cylindrical-)clavate, straight, pointing inwards; a 1 straight, subspherical, in tergal view broadly spatulate, with very dense short erect pubescence; a 2 and a 3 somewhat curved inwards, ovoid, with sparse but distinct oblique pubescence, these setae very similar to those on the tergites. Distance a 1 -a 1 (2.0-)2.7 times as long as a 1, distance a 1 -a 2 considerably longer than distance a 2 -a 3; distance st-st (7.2-)9.3 times as long as st and 0.9(-1.0) times as long as distance a

1

-a

1

.

Sternum. Posterior margin between b 1 rounded and with broad lobe below anal plate; lobe with rounded posterolateral corners and shallow median indentation. Relative lengths of setae (pygidial a 1 =10): b 1 =(43-)50(-62), b 2 =13(-15), b 3 =9(-10). The b 1 subcylindrical, tapering, striate, blunt, b 2 and b 3 cylindrical, the former tapering distally and with distinct oblique pubescence, the latter striate blunt. The b 1 1.1(-1.2) times as long as distance b 1 -b 1, b 2 0.5(-0.7) of distance b 1 -b 2 and b 3 0.2 of distance b 3 -b 3. Anal plate twice as long as its greatest width, widening from its base, lateral margins convex, broadest about at the middle; distal part narrow with parallel lateral margins and cut squarely at the end; two thin cylindrical appendages with globular distal enlargements protrude backwards from the middle of the sternal side, length of appendages 0.6(-0.7) of the length of plate.

Stage subad. 8. Genital papillae weakly developed and in the shape of small blunt cones from a low rounded base.

Stage juv. 5. The number of setae on the tergites I 13-14, II 20, III 20, IV 8(6+2) or 16(8+8) indicating an additional moult in this stage.

Etymology. From Latin dignus = worth.

Distribution in Tasmania. The species is widely distributed along both the western and eastern regions of the island.

Figures

Figs. 192–197. Borneopauropus dignus sp.nov., holotype 192, 194–197, paratype 193: 192, head, median and right part, tergal view; 193, head with temporal organ, lateral view; 194, left antenna, sternal view; 195, collum segment, median and left part, sternal view; 196, tergites I–III; 197, tergite VI, median and right part, and pygidium, tergal view. Scale line a for figures 196, 197; b for figure 195; c for figures 192–194.