Protura from Hainan Island, China: new species, checklist and distribution Author Bu, Yun Author Xiong, Yan Author Luan, Yun-Xia Author Yin, Wen-Ying text ZooKeys 2019 879 1 21 http://dx.doi.org/10.3897/zookeys.879.34404 journal article http://dx.doi.org/10.3897/zookeys.879.34404 1313-2970-879-1 53FD6801C4B54C09B61B47210DE937A7 D7E385CB91715F718747515174CEE2A1 Paracondeellum paradisum Bu & Yin sp. nov. Figures 2 , 3 , 4 ; Tables 2 , 4 Diagnosis. Paracondeellum paradisum sp. nov. is characterized by two pairs of A -setae on tergite I, one pair of A -setae, and eight pairs of P -setae on tergites II-VI , absence of A -setae and P2a seta on tergite VII, tergites IX and X with 12 and 10 setae, respectively, absence of seta d4 on dorsal side of head, and female squama genitalis short, with conical acrostylus. Material examined. Holotype, female (slide no. HN-SY-P2017016) (SNHM), China, Hainan, Sanya City, Yalong Bay Tropical Paradise Forest Park, soil of the tropical rain forest, 200 m elev., 18.25°N , 109.63°E , 22-III-2017, Y. Bu collector. Paratypes, 1 female (slide no. HN-SY-P2017071) (SNHM), same data as holotype. Description. Holotype: body length 570 μm , yellow-brown, foretarsus darker ( Fig. 4A ). Head . Elliptic, length 80 μm , width 50 μm ( Fig. 2A ). Head setae short, rostrum slightly protruded. Setae d6 and sd6 present, d4 and sd4 absent, d6 and d7 length 6 μm and 7 μm respectively. Pores cp and fp present. Pseudoculus oval, without lever, length 8 μm , width 6.5 μm . PR = 10 ( Fig. 2B ). Canal of maxillary gland short, with globular calyx and short sausage-like posterior dilation. CF = 10 ( Figs 2C , 4B ). Labial palpus well developed, with four setae and apical tuft, without basal sensillum ( Fig. 2D ). Maxillary palpus with two subequal seta-like sensilla ( Fig. 2E ). Figure 2. Paracondeellum paradisum sp. nov., holotype A head, dorsal view ( cp = clypeal pore, fp = frontal pore) B pseudoculus C canal of maxillary gland D labial palpus E maxillary palpus F foretarsus, exterior view G foretarsus, interior view H dorsal thorax, right side I tergite I, right side ( al = anterolateral pore, psm = posterosubmedial pore) J tergite VI, right side K comb L female quama genitalis. Arrows indicate pores. Scale bars: 10 μm ( B, K ); 20 μm ( A, C-J , L ). Foretarsus . Length 31 μm , claw length 9 μm , TR = 3.4; empodium length 2 μm , EU = 0.22. Dorsal sensilla t-1 and t-2 slender and long, BS = 0.63; t-3 short and spatulate, not reaching base of claw ( Fig. 2G ). Exterior side with only sensilla a , b and f present; a spatulate, b and f short ( Fig. 2F ). Interior sensilla a' and c ' short sward-like, b ' absent. Relative length of sensilla: t-2> t-1> c'> t3> a> a'> (b = f) ( Fig. 2F, G ). Length of middle tarsus 15 μm ; claw length 10 μm . Length of hind tarsus 17 μm ; claw length 12 μm . Thorax . Thoracic chaetotaxy given in Table 2 . Setae 1 and 2 on pronotum subequal in length, 6 μm and 7 μm respectively ( Fig. 2H ); mesonotum with seven pairs of posterior setae, P5a minute; metanotum with six pairs of posterior setae, P5a absent; setae P1 , P1a , P2 on mesonotum 6 μm , 1 μm , 7 μm , respectively; P1a on meso- and metanotum short, pin-shaped ( Fig. 2H ). Prosternum without seta A2 . All setae on thoracic sternites of normal shape. Pores on thorax not observed. Table 2. Adult chaetotaxy of Paracondeellum paradisum sp. nov.

Segment		Dorsal		Ventral
		Formula	Setae	Formula	Setae
Th.	I	4	1 , 2	(2+2)/6	A1 , M
					P1 , 2 , 3
	II	6/14	A2 , 4 , M	(4+2)/4	A1 , 2 , M
			P1 , 1a , 2 , 3 , 4 , 5 , 5a		P1 , 2
	III	6/12	A2 , 4 , M	(6+2)/4	A1 , 2 , 3 , M
			P1 , 1a , 2 , 3 , 4 , 5		P1 , 2
Abd.	I	4/12	A1 , 5	4/2	A1 , 2
			P1 , 1a , 2 , 2a , 3 , 4		P1
	II-III	2/16	A1	4/3	A1 , 2
			P1 , 1a , 2 , 2a , 3 , 4 , 4a , 5		Pc , 2
	IV-VI	2/16	A1	4/9	A1 , 2
			P1 , 1a , 2 , 2a , 3 , 4 , 4a , 5		Pc , 1 , 1a , 2 , 3
	VII	0/16	-	4/9	A1 , 2
			P1 , 1a , 2 , 3 , 3a , 4 , 4a , 5		Pc , 1 , 1a , 2 , 3
	VIII	4/14	A1 , 3	-	-
			P1 , 1a , 2 , 2a , 3 , 3a , 4	4	1 , 2
	IX	12	1 , 1a , 2 , 2a , 3 , 4	4	1 , 2
	X	10	1 , 2 , 2a , 3 , 4	4	1 , 2
	XI	6	-	6	1 , 2 , 3
	XII	9	-	6	-

Abdomen . Abdominal chaetotaxy given in Table 2 . Tergite I with two pairs of anterior setae ( A1 , A5 ) and six pairs of posterior setae, A5 short, sensillum-shaped ( Fig. 2I ). Tergites II-VI with one pair of anterior ( A1 ) and eight pairs of posterior setae, P2a present and P3a absent ( Figs 2J , 3A , 4E, F ). Tergite VII without anterior setae and with eight posterior setae, P2a absent and P3a present ( Figs 3B, C , 4E, F ). Accessory setae P1a on tergites I-V short pin-shaped (4 μm ), on tergites VI-VII normal (5 μm ). Accessory setae P2a and P4a always pin-shaped, 2 μm in length. P3a on tergite VII of normal shape and 5 μm long ( Fig. 4E, F ). Tergite VIII with two pairs of anterior setae ( A1 , A3 ) ( Fig. 4C ). Posterior central seta Pc present on sternites IV-VII , sensillum shaped, 4-5 μm long ( Figs 3A, C , 4F ). P1a on sternites IV-VI short, pin-shaped ( Fig. 3A ), on sternite VII setiform ( Fig. 3C ). Figure 3. A-C Paracondeellum paradisum sp. nov., holotype A sternite VI (spm = sternal posteromedial pore) B tergite VII, right side C sternite VII (spsm = sternal posterosubmedial pore). D-E Paracondeellum dukouense (Tang & Yin, 1988) holotype D foretarsus, exterior view E foretarsus, interior view. Arrows indicate pores. Scale bars: 20 μm . Figure 4. Paracondeellum paradisum sp. nov., holotype A habitus B canal of maxillary gland C tergites VIII-XII D sternites VIII-XII E tergites V-VII F sternites VI-VII . Scale bars: 100 μm ( A ); 20 μm ( B-F ). Tergites I-VII with pores psm and al ( Fig. 2I, J ), VIII with pores psm only, IX-XI without pores, XII single median pore. Sternites I-VI each with single posteromedial pore spm ( Figs 3A , 4F ), VII with three posteromedial pores ( Figs 3C , 4F ), VIII with single posteromedial pore ( Fig. 4D ), IX-XI without pores, XII with one pair of anterolateral sal pores. Abdominal appendages typical of the genus. Subapical setae and apical setae on appendage III 11 μm and 5 μm long respectively. Striate band on abdominal segment VIII reduced to a single serrate line ( Fig. 4D ). Comb on abdomen VIII rectangular, with 10 teeth, 10 μm wide ( Fig. 2K ). Female squama genitalis short, with conical acrostylus ( Fig. 2L ). Etymology. Latin "paradisum" , after "Paradise Forest Park" where type specimens were collected. Distribution. China (Hainan) Remarks. The genus Paracondeellum Yin, Xie & Zhang, 1994 is endemic to China and was previously known by a single species, P. dukouense , from Sichuan and Yunnan provinces. Paracondeellum paradisum sp. nov. differs from P. dukouense in the shape of foretarsal sensilla, pseudoculus, and female squama genitalis, and in the body chaetotaxy. A comparison of the morphology of these two species is given in Table 4 .