Gamasiphis plenosetosus Karg 1994b: 210 Gamasiphis plenosetosus Castilho et al . 2012b: 1985 Gamasiphis species (Acari: Mesostigmata: Ologamasidae) from Ecuador, with description of a new species and new records Melo-Molina, Elsa L. Santos, Jandir C. De Moraes, Gilberto J. Castilho, Raphael C. Zootaxa 2021 2021-11-17 5068 3 410 418  Castilho et al . 2012b: 1985  3F7L8 Karg, 1994 Karg 1994 [151,601,1670,1697] Arachnida Ologamasidae Gamasiphis Animalia Mesostigmata 3 413 Arthropoda species plenosetosus      Gamasiphis plenosetosus Karg 1994b: 210.    Gamasiphis plenosetosus. —  Castilho et al. 2012b: 1985.   Material examined. ECUADOR:  Napo(Amazon region): one female, between Santa Rosa de Quijos and El Chaco( 0°19’31.9”S 77°47’36.7”W; 1531 m), from soil at the base of  Solanum quitoenseon 4 August 2019; one female, Tena ( 0°53’49.4”S 77°48’06.5”W; 608 m) from soil at the base of  Saccharum officinarumon 4 August 2019;  ECUADOR:  Orellana(Amazon region): one female, Joya de los Sachas ( 0°19’36.7”S 76°53’17.9”W; 278 m) from soil at the base of  Urera bacciferaon 26 February 2018; one female. Joya de los Sachas ( 0°19’36.7”S 76°53’17.5”W; 274 m) from soil at the base of  Coix lacryma-jobion 26 February 2018;  ECUADOR:  Sucumbios(Amazon region):  one female, Nueva Loja( East) ( 0°06’02.7”S 76°52’14.8”W;  300 m) from soil at the base of  Musa paradisiacaon  21 February 2018;  one female, Nueva Loja( East) ( 0°06’03.1”S 76°52’14.1”W;  294 m) from soil at the base of  Citrus limonon  21 February 2018;  three females, Joyade los Sachas( 0°19’36.8”S 76°53’17.8”W;  284 m) from soil at the base of  Mangifera indicaon  26 February 2018;  one female, Alma Ecuatoriana( 0°00’32.6”S 77°28’20.3”W;  1187 m) from soil at the base of  Rubus rosifoliuson  21 February 2018;  two females, Nueva Loja( East) ( 0°06’03.1”S 76°52’14.2”W;  309 m) from soil at the base of  Sapindus saponariaon  21 February 2018;  two females Nueva Loja( East) ( 0°06’02.9”S 76°52’14.6”W;  312 m) from soil at the base of  Ficus americanaon  21 February 2018;  one female, Nueva Loja( East) ( 0°06’02.9”S 76°52’14.5”W;  298 m) from litter at the base of  Siphocampylussp.on  21 February 2018.  Allspecimens collected by C.A. Ortega-Ojeda.  Supplementary description. Adult female (n = 15) ( Figs 9–16).  Gnathosoma.Fixed cheliceral digit 42 (39–47) long, with six teeth in addition to the apical hook and the aciculate pilus dentilis ( Fig. 9); movable cheliceral digit 44 (43–47) long, with four teeth in addition to apical hook; chelicera with antiaxial and dorsal lyrifissures as well as dorsal seta distinct; arthrodial process of chelicera shaped as a short coronet-shaped fringe. Palp apotele 3-tined. Epistome 3-tined, with anteromedial extension club-shaped and denticulate ( Fig. 10); anterolateral extensions smooth, aciculate, shorter than anteromedial extension and smooth. Deutosternum with indistinct margins, apparently with seven transverse lines ( Fig. 11); first to fourth lines each with 5–6 denticles, fifth and sixth lines multidenticulate; fourth to sixth transverse lines U-shaped. Internal malae with fringed lateral margins. Corniculi horn-shaped, 22 (21–23) long, 14 (13–14) wide at the widest point. Seta h3posterolateral to h1and anteromedial to h2. Measurements of setae: h1and h213 (12–14), h314 (13–16), sc15 (13–18); all setae aciculate.  Dorsal idiosoma( Fig. 12). Dorsalshield 385 (335–403) long, 240 (226–260) wide (between s6and r6), covering totally the idiosoma. Podonotal regionimbricate posterolaterally to z4, smooth elsewhere; with 23 pairs of setae ( r1absent); r 5in a more ventral position than other rsetae; with five pairs of distinguishable lyrifissures and four pairs of distinguishable pores. Opisthonotal regionimbricate; with 18 pairs of setae (  R1and  R5absent); with eight pairs of distinguishable lyrifissures and one pair of distinguishable pores; with a slightly curved line extending diagonally from shield margin through level between S2and  R2toward base of Z1. Measurementsof setae: j111 (10–12), j230 (28–32), j327 (26–31), j427 (26–29), j527 (25–30), j631 (28–33), z17 (6–10), z225 (23–27), z329 (23–32), z429 (26–32), z528 (25–31), z631 (26–36),  s124(23–25),  s226(24–27),  s331(26–34),  s434(30–36),  s535(31–36),  s636(31–38), r227 (25–29), r324 (21–27), r425 (21–27), r514 (12–15), r633 (30–36), J128 (23–35), J233 (31–36), J334 (32–38), J430 (26–35), J520 (15–23), Z135 (31–39), Z237 (34–40), Z337 (31–42), Z428 (25–31), Z547 (43–52),  S136(30–40),  S237(35–42),  S336(34–37),  S431(29–34),  S531(29–35),  R238 (35–40),  R338 (36–40),  R439 (36–42); all setae aciculate.  Ventral idiosoma( Fig. 13). Base of tritosternum 26 long and 14 (12–16) wide basally ( Fig. 14); laciniae 41 (39–44) long, pilose, separated for about 90% of their total length. With two pairs of presternal platelets. Sternal shield with scant reticulation; 90 (88–91) long at midline and 63 (57–68) wide at median level of coxae II; with four pairs of setae ( st1–st4), st3inserted posterior and medial to st2; and four pairs of distinguishable lyrifissures. Genital shield apparently smooth; 64 (60–68) long and 58 (55–62) wide at widest level; bearing st5, distance st5–st536 (34–39); anterior margin convex and posterior margin truncate. Ventrianal shield imbricate anteriorly to Jv4and smooth posteriorly; 189 (159–203) long at midline (from anterior margin to post-anal seta), 186 (174–203) wide at widest point (between setae Jv2and Zv2); with eight pairs of setae ( Jv1–Jv5, Zv1–Zv3) in addition to circumanal setae, and three pairs of distinguishable lyrifissures. Peritreme extending to level of median region of coxa II. Measurements of setae: st120 (18–22), st217 (16–19), st310 (8–11), st417 (16–19), st516 (15–18), Jv121 (20–23), Jv225 (23–26), Jv328 (25–34), Jv437 (34–40), Jv529 (27–33), Zv133 (30–39), Zv237 (34–39), Zv338 (36–39), para-anal 11 (10–12), post-anal 12 (10–14); all setae aciculate.  Spermatheca( Fig. 15). Phytoseiid-type, clearly distinguishable as an elongate and curved sclerotised structure, projecting from the posterior internal margin of the base of coxa IV, continuing in a long, membranous saccular structure.  Legs.I: 329 (309–348); II: 251 (221–268); III: 214 (200–234); IV: 281 (273–286). Chaetotaxy of legs I–IV: coxa: 2, 2, 2, 1; trochanter: 6, 5, 5, 5; femur: 13, 11, 6, 6; genu: 13, 11, 9, 8; tibia: 14, 10, 8, 9; tarsus II–IV: 18, 18, 17. Without macrosetae on all legs, including leg IV ( Fig. 16). All legs with pretarsi, elongate ambulacral stalk and a pair of strongly sclerotised claws.   Remarks.The redescription of this species provided by Castilho et al. (2012b)added to the original description, which did not provide sufficient morphological details. However, many setae of the holotypeare broken, and thus their measurements could not be provided in the redescription by Castilho et al. (2012b). The measurements of this publication are similar to those reported by their redescription for the available setae in the holotype. Castilho et al. (2012b)reported the presence of three teeth on the movable cheliceral digit, and the absence of S5and presence of R 1in the redescription of the species based on their examination of the holotype. Also, information about the spermatheca could not be provided by Castilho et al. (2012b), and it is here provided for the first time. 3407623306 2018-02-21 300 -0.10075 East 1 -76.87078 Nueva 4 414 1 1 Loja 3407623310 2018-02-21 294 -0.10086111 East 1 -76.87058 Nueva 4 414 1 1 Loja 3407623312 2018-02-26 284 -0.3268889 Sachas 1 -76.888275 Joya 4 414 1 1 Loja 3407623307 2018-02-21 1187 -0.009055555 Alma Ecuatoriana 1 -77.472305 4 414 1 1 Loja 3407623303 2018-02-21 309 -0.10086111 East 1 -76.87061 Nueva 4 414 1 1 Loja 3407623313 2018-02-21 312 -0.10080556 East 1 -76.87073 Nueva 4 414 1 1 Loja 3407623308 2018-02-21 298 -0.10080556 East 1 -76.8707 Nueva 4 414 1 1 Loja 3407623314 [549,1079,439,465] C. A. Ortega-Ojeda. All 4 414 1 Loja