Primagistemus wuyiensis Fan &amp; Zhang 2002, sp. nov.
Creators: name: Fan, Qing-Hai
name: Zhang, Zhi-Qiang
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Stigmaeidae
Primagistemus
Primagistemus wuyiensis

description: <i>Primagistemus wuyiensis</i> sp. nov. (Figs. 13­17) <i>Material examined.</i> Holotype female, on leaves of <i>Araucaria</i> sp., Wuyi Mountain, Fujian, China, 11.viii. 1994, Fan Qing­Hai. In the collection of Department of Plant Protection, Fujian Agricultural and Forestry University, Fuzhou, Fujian Province, China. <i>Paratypes.</i> One female, 2 deutonymphs, same data as holotype. <i>Diagnosis</i>. Adult females of <i>Primagistemus wuyiensis</i> <b>sp. nov.</b> are characterized by having all dorsal body setae (except <i>sci</i>) truncated, which differ from tapered setae of <i>P. loadmani</i>. More diagnostic features are listed in key to species above. <i>Description of female (n= 2)</i> <i>Gnathosoma</i>. Chelicerae conical (114­116 m); movable digits long (61 m), about one­half length of chelicerae. Palp robust (89­95 m); dorsal femoral seta truncated distally; tarsus extending beyond tip of tibial claw; accessory claw slender, slightly shorter than palptibial claw. Counts of setae, solenidia and claws on palp (from trochanter to tarsus): 0, 3, 1, 2 + 1 spin­like accessory claw + 1 claw, 4 + 1 + 1 subterminal eupathidium + 3 basally fused eupathidia. Subcapitulum plain, without clear punctation; subcapitular setae <i>m</i> (28­29 m) much shorter than <i>n</i> (46­48 m); distance between <i>m ­m</i> (38­39 m) wider than it between <i>n ­n</i> (31­33 m) and 3 times as wide as distance between <i>m­n</i> (12­13 m). <i>Idiosoma</i>. Oval in shape (380­386 m long, 245­249 m wide). Dorsal body setae (except <i>sci</i>) truncated, terminating abruptly in jagged ends, but without clear tubercles at their bases. Propodosomal setae <i>vi</i> (34­38 m) about 1.4 times distance between <i>vi­vi</i> (25­ 26 m); <i>ve</i> (45­48 m) 1.4 times distance between <i>ve­sci</i> (30­33 m); <i>sci</i> minute (10­11 m), mediad of <i>sce</i> in the same row, nearly one­fourth distance between <i>sci­sce</i> (38­40 m); <i>sce</i> (51­53 m) slightly longer than <i>ve</i>; ratio <i>ve/sci</i> = 4.1, <i>ve/sce</i> = 0.9. Central hysterosomal shield broad, bearing 3 pairs of setae, <i>c</i> <i>1</i> (35­39 m), <i>d</i> <i>1</i> (29­32 m) and <i>e</i> <i>1</i> (25­ 26 m); <i>c</i> <i>1</i> about one­third distance between <i>c</i> <i>1</i> <i>­c</i> <i>1</i>; <i>d</i> <i>1</i> less than one­third distance between <i>d</i> <i>1</i> <i>­d</i> <i>1</i>; <i>e</i> <i>1</i> nearly two­fifths distance between <i>e</i> <i>1</i> <i>­e</i> <i>1</i>. Setae <i>c</i> <i>2</i> (56­58 m), <i>d</i> <i>2</i> (39­41 m), <i>e</i> <i>2</i> (29­32 m) and <i>f</i> <i>1</i> (32­35 m) arise from platelets. Ratio <i>c</i> <i>1</i> <i>­c</i> <i>1</i>: <i>d</i> <i>1</i> <i>­d</i> <i>1</i>: <i>e</i> <i>1</i> <i>­e</i> <i>1</i>: <i>f</i> <i>1</i> <i>­f</i> <i>1</i> = 1.6: 1.7: 1: 1.8. Distances between setae, <i>c</i> <i>1</i> <i>­c</i> <i>1</i> = 103 (99­104 m), <i>c</i> <i>1</i> <i>­d</i> <i>1</i> = 71 (68­74 m), <i>d</i> <i>1</i> <i>­ d</i> <i>1</i> = 111 (109­115 m), <i>d</i> <i>1</i> <i>­d</i> <i>2</i> = 41 (39­43 m), <i>d</i> <i>1</i> <i>­e</i> <i>1</i> = 55 (54­55 m), <i>e</i> <i>1</i> <i>­e</i> <i>1</i> = 65 (60­71 m), <i>e</i> <i>1</i> <i>­e</i> <i>2</i> = 33 (28­35 m), <i>e</i> <i>1</i> <i>­f</i> <i>1</i> = 46 m, <i>f</i> <i>1</i> <i>­f</i> <i>1</i> = 117 (113­120 m). Suranal shield integral, bearing 2 pairs of setae (<i>h</i> <i>1</i> and <i>h</i> <i>2</i>), <i>h</i> <i>1</i> (38­39 m) shorter than <i>h</i> <i>2</i> (43­45 m). Distances between setae: <i>h</i> <i>1</i> <i>­h</i> <i>1</i> = 30 (29­31 m), <i>h</i> <i>1</i> <i>­h</i> <i>2</i> = 33 m. Ventral setae 3 pairs (<i>1 a</i>, <i>3 a</i> and <i>4 a</i>), <i>1 a</i> (40­43 m) and <i>3 a</i> (38­42 m) slightly longer than <i>4 a</i> (33­35 m). Aggenital setae 3 pairs (<i>ag</i> <i>1</i>, <i>ag</i> <i>2</i> and <i>ag</i> <i>3</i>); <i>ag</i> <i>1</i> (30­31 m) on small platelets; <i>ag</i> <i>2</i> (26­27 m) and <i>ag</i> <i>3</i> (48 m) situated on a horseshoe­like shield. Genital setae 1 pair, <i>g</i> <i>1</i> (40­42 m), its tip reaching base of <i>ps</i> <i>2</i>. Pseudanal setae 3 pairs (<i>ps</i> <i>3</i>, <i>ps</i> <i>2</i> and <i>ps</i> <i>1</i>), <i>ps</i> <i>3</i> (26­27 m) tapered, <i>ps</i> <i>2</i> (27­28 m) and <i>ps</i> <i>1</i> (29­30 m) truncated distally. <i>Legs</i>. Length (from base of trochanter to tip of tarsus): leg I = 232 (225­236 m), leg II = 175 (169­179 m), leg III = 168 (160­170 m), leg IV = 198 (187­202 m). Dorsal setae <i>d</i> on femora I­IV, on genera I, II and IV truncated as dorsal body setae. Tarsi I­IV each bearing 1 solenidion, I = 14 (13­15 m), II = 13 (13­14 m), III = 8.5 m, IV = 6 m. Counts of setae and solenidia on legs I­IV: coxae 2, 1, 2, 2; trochanters 1, 1, 1, 0; femora 5, 4, 3, 2; genua 3 + 1, 2, 0, 0; tibiae 5 + 1 p, 5 + 1 p, 5 + 1 p, 5 + 1 p; tarsi 13 + 1, 9 + 1, 7 + 1, 7 + 1. <i>Habitat and distribution</i>. From leaves of <i>Araucaria</i> sp., Wuyi Mountain, Fujian, CHINA.
description: Published as part of <i>Fan, Qing-Hai &amp; Zhang, Zhi-Qiang, 2002, Primagistemus gen. nov. (Acari: Prostigmata: Stigmaeidae), pp. 1-8 in Zootaxa 29</i> on pages 6-8, DOI: 10.5281/zenodo.4619905