Allopauropus (D.) apicalis Gai and Scheller, 2007

Shen, Hong, Gai, Yonghua, Song, Daxiang, Sun, Hongying, Scheller, Ulf & Zhou, Kaiya, 2007, New species of Pauropodidae (Myriapoda: Pauropoda) from Nanjing, China, Journal of Natural History 41 (37 - 40), pp. 2313-2329 : 2319-2321

Allopauropus (D.) apicalis Gai and Scheller sp. n.

( Figure 4 )

Type material

Holotype: ad. 9 (female), Laoshan Mountain , 23 July 2006, leg. H. Shen et al . Paratypes: one ad. 9 (female), Zijin Mountain , 20 July 2006, leg. H. Shen et al.; one ad. 9 (male), Laoshan Mountain, 13 September 2006, leg. H. Shen et al .

Diagnosis

Allopauropus apicalis can be easily distinguished from all other members of the subgenus Decapauropus by the shape of the anal plate: semicircular with a small triangular bulge, glabrous.

Etymology

From the Latin apex 5 point (referring to the shape of the posterior part of the anal plate).

Description

Length. (0.88–) 0.98 mm.

Head. Tergal setae thin, tapering, of medium length to fairly long, densely annulate. Relative lengths of setae: 1st row: a 1510, a 259; 2nd row: a 1511, a 258, a 359; 3rd row: a 1510, a 258; 4th row: a 1511, a 257 (–8), a 357, a 459 (–10). Ratio a 1 / a 1 – a 1 in 1st row 1.1, in 2nd row 1.5, in 3rd row 1.5, in 4th row 1.4. Temporal organs short, broad, length 1.2 times as long as shortest interdistance. Head cuticle glabrous.

Antennae. Segment 4 with five setae, all thin, cylindrical, densely annulate. Relative lengths of setae: p 5100, p 9550(–54), p 05(38–)40(–42), r 5(36–)40, u 5(17–)20. Tergal branch t 3.2 times as long as greatest diameter and 1.2 times as long as sternal branch s; the latter 2.2 times as long as greatest diameter. Seta q 0.5(–0.6) length of s. Relative lengths of flagella (base segment included) and base segments alone: F 15100, bs 1511; F 2527 (–32), bs 253; F 35 (103–)105, bs 3510. F 1 3.1 times as long as t, F 2 and F 3 1.2(–1.4) and (4.3–)4.6 times as long as s,respectively. Globulus g 1.3 times as long as greatest diameter; width of g 0.9 of greatest diameter of t .

Trunk. 4+4 setae on tergite I, 6+6 on II–IV, 6+4 on V, 4+2 on VI. Genital papillae short, blunt, 1.8 times as long as wide, widest in middle.

Bothriotricha. Relative lengths: T 15100, T 25115 (–120), T 35 (118–)120, T 45 (124–)126, T 55140 (–145). All with simple straight axes with short pubescence; the latter oblique proximally, erect distally.

Legs. Coxa and trochanter of leg 9 with furcate setae; branches thick, with short pubescence; branches subequal in length on coxa, secondary branch shorter than primary one on trochanter. Secondary branch rudimentary in anterior legs.

Tarsus of leg 9 slender, 4.4(–4.5) times as long as greatest diameter. Setae pointed, proximal one 0.5 length of tarsus and (3.0–)4.2 times as long as distal seta.

Pygidium. Tergum: posterior margin evenly rounded. Relative lengths of setae: a 15100, a 25105, a 35 (159–)162, st 548(–50). Setae thin, subcylindrical, with short oblique pubescence; st clavate, bent inwards. Distance a 1 – a 1 about as long as a 1, distance a 1 – a 2 5.7(– 6.0) times as long as distance a 2 – a 3; distance st–st 0.9(–1.0) length of st and 0.3 of distance a 1 – a 1.

Sternum: posterior margin almost straight, with a broad rounded indentation between b 1. Relative lengths of setae (a 15100): b 15229 (–234), b 25 (134–)140(–145). Setae thin, subcylindrical, with short oblique pubescence. Distance b 1 – b 1 almost as long as b 1; b 2 1.8 times as long as distance b 1 – b 2.

Anal plate: semicircular, 1.5 times as wide as long, posterior margin with short median triangular process, length almost 0.5 length of plate.

Figures

Figure 4. Allopauropus (D.) apicalis sp. n. (a–c, e–i) Holotype female; (d) paratype male. (a) Head, right side, dorsal view; (b) pygidium, dorsal view; (c) right antenna, ventral view; (d) genital papillae; (e) tarsus of leg 9; (f) collum segment, median part, ventral view; (g) seta on coxa of leg 9; (h) seta on trochanter of leg 9; (i) T3.