Two new species of Tydeidae (Acari: Prostigmata) associated with stingless bees Author Da-Costa, Tairis Author Rodighero, Luana Fabrina Author Silva, Guilherme Liberato Da Author Ferla, Noeli Juarez Author Blochtein, Betina text Zootaxa 2019 2019-08-07 4652 1 101 112 journal article 26065 10.11646/zootaxa.4652.1.4 8e9ee39e-ead8-422f-8073-d4f32670a81e 1175-5326 3363579 97E3C49C-A9DF-418F-A7C6-2B2CE59D68E3 Lorryia meliponarum n. sp. ( Figs. 1–7 ) Diagnosis. Dorsal and ventral shields with serrated setae, including trichobothria. Serrated setae on legs I-IV (except tc ’, tc ” and ft ’ of leg I). Setae d bifurcated. Dorsal ornamentation mostly striated, type Tydeus , with longitudinal striae between ro , la and bo . Empodial hooks absent. Description. Adult female (n = 9)—Body of medium size, oval ( Fig. 1 ). Length of idiosoma 223 (216–268), width 139 (122–151). Dorsum ( Fig. 1 ). Dorsum with 13 pairs of setae ( ro , la , bo , ex , c1 , c2 , d , e , f1 , f2 , h1 , h2 and ps1 ). Dorsum completely covered with striae; prodorsum with longitudinal striae between ro , la and bo ( Fig. 2 A-C). Striation between setae d transverse in the form of a “U” ( Fig. 2D ). Striation between f1 , f2 , h1 and h2 transverse ( Fig. 2E ). Eyes absent. All dorsal setae serrate, not reaching setae in next row (excluding bo ). Bothridial setae ( bo ) filiform. Lyrifissures ia located between setae c1 and d , im situated close to d and e . Lengths of dorsal setae: ro 9 (7–12); la 7 (6–9); bo 42 (35–45); ex 12 (8–18); c1 9 (7–12); c2 12 (7–16); d 9 (7–14); e 11 (9–15); f1 12 (10–15); f2 13 (11–18); h1 12 (11–18); h2 13 (12–20); ps1 12 (10–16). Distances between dorsal setae: ro-ro 18 (18–28); la-la 54 (42–73); bobo 43 (43–58); c1-c1 43 (42–60); c2-c2 108 (100–147); d-d 33 (29–47); e-e 68 (68–99); f1-f1 21 (19–32); f2-f2 52 (49–69); h1-h1 19 (12–24); h2-h2 52 (49–71); ro-la 25 (21–31); c1-d 38 (37–55); d-e 29 (28–40); e-f1 29 (29–43); f1-f2 24 (20–24); h1-h2 21 (17–23). Venter ( Fig. 3 ). All ventral setae serrated and completely striated. Longitudinal striae between pt setae, transverse striae between pt , mtα and mtβ . Lyrifissures ih located posteroventrally. Measurements of setae: pt 9 (8–15); mtα 10 (9–15) and; mtβ 10 (8–13). Four pairs of aggenital setae ( ag1 , ag2 , ag3 and ag4 ) and one pair of pseudanal setae ( ps2 ). Setal lengths: ag1 7 (5–8); ag2 8 (6–12); ag3 5 (5–8); ag4 9 (8–12); g1 4 (3–6); g2 4 (3–7); g3 4 (3–5); g4 3 (1–6); g5 4 (2–6); g6 4 (1–5) and; ps2 12 (8–15) ( Fig. 4A ). Shape of cg organ elliptical ( Fig.3 ). Gnathosoma ( Fig. 5 ). Length 49 (49–59), width 42 (40–49). Gnathosoma visible from above. Subcapitulum with longitudinal striae behind sc1 and sc2 . Infracapitular setae simple. Setal lengths: sc1 3 (3–6), sc 2 7 (6–12). Palp 48 (46–59) long, setation 5(+1ω)-2-2 ( Fig. 6 ), setae d bifurcate. Palp tarsus with eupathidium ρζ semilunar distally ( Fig. 4B ). Palptarsus significantly longer than cheliceral digits. Cheliceral stilettos 17 (10–17) long. Legs ( Fig. 7 A-D). All leg setae serrated (except tc ’, tc ” and ft ’ of leg I). Tarsi I-IV with two claws and hairy empodium but empodial hooks ( om ) are absent. Chaetotaxy of legs I–IV (tarsus to trochanter): I: 8(+1ω)-3(+1κ)-3- 3-1 ( Fig. 7A ); II: 6(+1ω)-2-2-3-1 ( Fig. 7B ); III: 5-2-1-2-1 ( Fig. 7C ) and; IV: 5-2-1-1-0 Fig. 7D ). Length of leg I 147 (147–203); leg II 114 (114–165); leg III 135 (115–195) and; leg IV 147 (122–196). Length of tarsus + apotele I 42 (39–54) and 11 (11–14) width; length of solenidion ωI 7 (6–8); length of seta ft’ 15 (11–16); ft’’ 9 (9–11); length of seta k 3 (2–3); length of ωII 4 (3–5). Type material. Female holotype , eight female paratypes , as follows : Holotype , six paratypes , Porto Alegre, Rio Grande do Sul , Brazil , from nests of T. fiebrigi , September 21, 2018 , T. Da-Costa . Two paratype females , Bom Princípio , Rio Grande do Sul , Brazil , from nest of M. quadrifasciata , October 10, 2018 , T. Da-Costa . Female holotype and a female paratype deposited at the Departamento de Entomologia e Acarologia , Escola Superior de Agricultura “ Luiz de Queiroz ”, Universidade de São Paulo ( ESALQ / USP ), Piracicaba , state of São Paulo , Brazil . Two paratypes were deposited at the Museu de Ciências e Tecnologia , Pontifical Catholic University of Rio Grande do Sul ( PUCRS ), Porto Alegre , Rio Grande do Sul , Brazil . Other paratypes were deposited at the Museu de Ciências Naturais ( ZAUMCN ), Universidade do Vale do Taquari—Univates , Lajeado , Rio Grande do Sul , Brazil . FIGURE 1. Lorryia meliponarum n. sp. , female (holotype), idiosoma in dorsal view. FIGURE 2. Lorryia meliponarum n. sp. (A) Dorsum. (B) Ornamentation in dorsal view. (C) Ornamentation between ro and bo. (D) Ornamentation between d and f1. (E) Opisthosomal setae. Male . not found. Etymology. The name meliponarum derives from the name of the stingless bee tribe Meliponini . Remarks. This new species resembles L. obnoxia (Kuznetzov & Zapletina, in Livshitz et al. 1972 ) , which has short dorsal setae, no empodial hooks and Tydeus striations. Nevertheless, it differs as its dorsal setae are serrated instead of lanceolate, its trichobothria ( bo ) are serrated instead of smooth and setae d are bifurcated. This new species is also similar to L. oregonensis ( Baker, 1970 ) as its dorsal setae are serrated and it has Tydeus striations. Nonetheless, it differs because its dorsal setae are short ( f1 and f2 do not reach the bases of h1 and h2, respectively) instead of long ( f1 and f2 reach the bases of h1 and h2 , respectively). In addition, its leg setae are serrated (except tc ’, tc ” and ft ’ on leg I) instead of smooth, its empodium has claws instead of without claws, it has transverse striae between the ventral setae mtα and mtβ instead of in a V-pattern, and solenidion ωI is distinctly less than ½ the width of tarsus I instead of being longer than ½ the width of tarsus I.