Torrenticola suptilisrostrum Gu & Guo 2020, sp. nov.
Creators: name: Gu, Xin-Yao
name: Jin, Dao-Chao
name: Guo, Jian-Jun
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Torrenticolidae
Torrenticola
Torrenticola suptilisrostrum

description: Torrenticola suptilisrostrum Gu & Guo sp. nov.
urn:lsid:zoobank.org:act: EEBC35EF-7EFE-4FEA-978D-3D4D2D869986
Figs 1–4
Diagnosis
Idiosoma elliptical; dorsal plate arrangement: 2+2p+1; dorsal plate with a colour pattern, hour-glassshaped with pale “shoulder-patches”; infracapitular bay V-shaped; E 4 on the same line with the 4 th pair of acetabula; infracapitular rostrum extremely slender and slightly curved towards the dorsum.
Etymology
The specific name is from the Latin words “ suptilis ” (slender) and “ rostrum ” (beak), referring to the slender rostrum; used as a noun in apposition.
Material examined
Holotype
China • ♂; Wuyishan; 27°40′54″ N, 117°47′31″ E, 311 m a.s.l.; 4 Aug. 2018; X.Y. Gu leg.; FJ- TO-20180801.
ParatypesChina • 1 ♂, 1 ♀; same collection data as for holotype; FJ-TO-20180802 to FJ-TO-20180803.
Description
Male (n = 2)
BODY. Idiosoma elliptical, L/W ratio 1.5 (1.5) (Fig. 1B). Dorsal plate arrangement: 2+2p+1; dorsal plate with colour pattern, hour-glass-shaped with pale “shoulder-patches” (Fig. 1A). Infracapitular bay V-shaped, Cx-II–III mL relatively long; E 4 on same line with 4 th pair of acetabula; V 1 anterior to V 2, V 2 almost at same level of Ap (Fig. 1B). Gnathosoma dorsal apodeme short and blunt, ventral apodeme long and wide, rostrum long, extremely slender, curved slightly to dorsum (Fig. 1C). Palp (Fig. 2A): P-1 long, with one dorsal seta; P-2 with three dorsal setae and one ventral seta on ventrodistal prolongation, which is slender and curved towards distal; P-3 with two dorsal setae and one ventral seta on ventrodistal prolongation; P-4 with two developed ventral extensions, bearing one long and three short setae. Legs I–IV as shown in Fig. 2 B–E. Ejaculatory complex with well developed anterior keel and proximal arms (Fig. 2F).
MEASUREMENTS. Idiosoma L 688 (698), W 462 (454); dorsal shield L 563 (563), W 418 (402); dorsal plate L 509 (529), frontal platelets L 122 (115), shoulder platelets L 169 (168). Infracapitular bay depth 160 (170); Cx-1 L 207 (204), mL 104 (105), Cx-II–III mL 103 (99); Gf L 138 (137), W 105 (112), distance between Gf and Ap 118 (133). Gnathosoma vL 351 (359), dL 277 (280), chelicera bs L 307 (376), claw L 39 (44). Ejaculatory complex (Fig. 2f), L 177 (166), aL 123 (112), W 85 (78). L of palp segments: P-1, 40 (42); P-2, 114 (121); P-3, 61 (53); P-4, 94 (103); P-5, 16 (13). L of leg segments: I-L-1–6: 39 (35), 82 (78), 85 (83), 99 (102), 106 (112), 92 (94); II-L-1–6: 53 (34), 95 (86), 67 (74), 94 (90), 104 (109), 98 (108); III-L-1–6: 44 (43), 90 (59), 76 (84), 112 (109), 112 (128), 128 (129); IV-L-1–6: 94 (112), 105 (93), 107 (113), 128 (144), 143 (150), 137 (121).
Female (n = 1)
BODY. Body features same as for the male.
MEASUREMENTS. Idiosoma L 687, W 460. Dorsal shield L 558, W 418; dorsal plate L 512, frontal platelets L 120, shoulder platelets L 175. Infracapitular bay L 159; Cx-1 L 194, mL 89, Cx-II–III mL 105. Gf L 135, W 104, distance between Gf and Ap 125. Gnathosoma vL 330, dL 256, chelicera bs L 338, claw L 66. L of palp: P-1, 35; P-2, 127; P-3, 62; P-4, 118; P-5, 19. L of leg segments: I-L-1–6: 34, 83, 81, 95, 107, 95; II-L-1–6: 34, 54, 69, 93, 104, 96; III-L-1–6: 44, 58, 74, 107, 123, 122; IV-L-1–6: 105, 90, 110, 142, 150, 141.
Distribution
China (Wuyishan).
Habitat
Streamlet.
Remarks
The new species, Torrenticola suptilisrostrum sp. nov., is similar to T. fagei E. Angelier, 1949 (Martin 2009). The new species shares the character of an infracapitular rostrum extremely slender and slightly curved towards the dorsum with T. fagei. However, T. suptilisrostrum sp. nov. differs from the latter by E 4 on the same line with the 4 th pair of acetabula (5 th in T. fagei); dorsal plate 2+2p+1 (dorsal plate 4+ 1 in T. fagei); P-2 robust and compact (P-2 relatively thin and long in T. fagei).
description: Published as part of Gu, Xin-Yao, Jin, Dao-Chao & Guo, Jian-Jun, 2020, Three new species and one new record of Torrenticolidae (Acari, Hydrachnidia) from Wuyishan with an updated key for Chinese fauna, pp. 1-23 in European Journal of Taxonomy 625 on pages 3-7, DOI: 10.5852/ejt.2020.625, http://zenodo.org/record/3750775