Decapauropus cutellatus Qian

Qian, Changyuan, Chu, Kelin, Liu, Xiaorui & Sun, Hongying, 2014, Four new species of Pauropoda (Brachypauropodidae, Eurypauropodidae, Pauropodidae) from the Sanqingshan Mountains, Jiangxi Province, China, Zootaxa 3764 (1), pp. 81-91 : 87-88

Decapauropus cutellatus Qian sp. n.

(Figure 3)

Type material. Holotype. ad.9 (female), Sanqingshan, Jiangxi, 9 July 2012, leg. Qian & Chu.

Paratypes. ad.9 (female), Sanqingshan, Jiangxi, 8 July 2012, leg. Qian & Chu.

Etymology ..From the Latin culter = knife (referring to the shape of setae st).

Diagnosis. Decapauropus cutellatus sp. n. may be closely related to Decapauropus kenyanus, Scheller, 1999 from Kenya, Gembe hills. They are very similar as to the general shape of the antennae and the pygidium with its setae. A good distinguishing character is the shape of the bothriotricha T 1– T 5. Bothriotricha with straight simple axes in D. kenyanus , but branched in D. cutellatus sp. n.. The shape of the anal plate is triangular in D. kenyanus and is rounded posteriorly in D. cutellatus sp. n..

Description. Length. (0.34 -) 0.39 mm

Head. Tergal setae of short to medium length, subcylindrical, striate, blunt. Relative lengths of setae, 1st row: a 1 = 10, a 2 = 9.4 (- 10); 2nd row: a 1 = 11.8 (- 12.1), a 2 = 25.9 (- 28.7), a 3 = (26.5 -) 27.1; 3rd row: a 1 = (10 -) 11.8, a 2 = (16.4 -) 17.1; 4th row: a 1 = (10 -) 11.2, a 2 = 13.5 (-?), a 3 = 11.8 (-?), a 4 = 24.1 (-?); The ratio a 1/ a 1– a 1 in 1st row 0.74 (- 0.80), 2nd row (0.38 -) 0.42, 3rd row 0.42 (- 0.50) and 4th row (0.64 -) 0.68. Temporal organs oval in tergal view, their length 2.0 times as long as their shortest distance apart. Head cuticle glabrous.

Antennae. Segment 4 with four cylindrical setae; Relative lengths of setae: p = 100, p ' = 66.3 (- 71), p '' = (32.9 -) 33.7, r = (30 -) 31.3; tergal seta p 1.48 (1.6) times as long as tergal branch t. The latter cylindrical, 2.4 (-2.6) times as long as its greatest diameter and 1.2 of length of sternal branch s; that branch 2.0 (2.1) times as long as its greatest diameter. Seta q cylindrical, blunt, 1.15 of length of s. Relative lengths of flagella (basal segments included) and basal segments: F 1 = 100, bs 1 = 8 (- 9); F 2 = 61 (- 63), bs 2 = 8 (- 10); F 3 = (84 -) 86, bs 3 = (7 -) 9. The F 2 thinnest; F 1 3.5 times as long as t, F 2 and F 3 2.0 (2.1) and 2.6 (2.8) times as long as s respectively. Distal calyces spherical; distal part of flagella axes fusiform. Globulus g 1.2 (1.1) times as long as wide; about nine bracts, capsule subspherical; width of g (0.7) 0.9 of the greatest diameter of t. Antennae almost glabrous.

Trunk. Setae of collum segment clavate, striate, probably simple. Sublateral setae 2.9 times as long as submedian ones; sternite process triangular, pointed; appendages narrowing distally and with flat caps; process with coarse surface.

Setae on tergites thin, cylindrical; 4 + 4 setae on tergite I, 6 + 6 on II–IV, 6 + 4 on V, 4 + 2 on VI. Tergites glabrous.

Bothriotricha. Relative lengths of bothriotricha: T 1 = 100, T 2 = 105 (- 108), T 3 = 109 (- 115), T 4 = (116 -) 118, T 5 = 104.5 (- 110), T 1– T 4 polyramose with branches in one plane; main axes and branches covered with a distinct pubescence of somewhat oblique simple hairs; primary branches sometimes secondarily branched most distally. Approximate number of branches: T 1 14, T 2 16, T 3 18, T 4 15, T 5 16.

Legs. Setae on coxa and trochanter of leg 9, furcate with subcylindrical blunt branches. Tarsus of leg 9 short, tapering, 3.1 times as long as its greatest diameter. Proximal seta long, tapering, with pubescence; distal seta clavate, blunt, striate; their length 0.57 and 0.26 of the length of tarsus respectively. Cuticle of tarsus is glabrous.

Pygidium. Tergum. Posterior margin between st straight. Relative lengths of setae: a 1 = 100, a 2 = 183.8, a 3 = 178.4 (- 180), st = 45.9 (- 47). a 1 and a 2 pointed, striate; a 3 blunt, subcylindrical, striate; st shaped as a broadsward, glabrous; Distance a 1– a 1 0.9 times as long as a 1; distance a 1– a 2 (1.9 -) 2.3 times as long as a 2– a 3; distance st–st (1.6 -) 1.9 times as long as st and 1.6 length of distadnce a 1– a 1.

Sternum. Posterior margin with shallow indentation between b 1. Relative lengths of setae (a 1 = 100): b 1 = 351.4 (- 360), b 2 = 189.2 (- 194). All setae subcylindrical, point. Distance b 1– b 1 0.6 of length of b 1; distance b 1– b 2 0.5 (- 0.6) of length of b 2.

Anal plate. 2.1 times as long as broad, with parallel lateral margins, posterior part rounded; two clavate appendages protrude downwards from posterior part of sterna side, length of appendages 0.3 of the length of the plate; posterior margins and appendages glabrous.

FIGURE 3. Decapauropus cutellatus Qian sp. n. holotype (female). A, head, submedian and right part, tergal view. B, pygidium, tergal view. C, collum segment, median and left part, ventral view. D, T 3. E, right antenna, ventral view. F, tarsus of leg 9.