Plant mites of the Dominican Republic, with a description of a new species of Petrobia (Tetranychina) Wainstein, 1960 (Acari, Prostigmata, Tetranychidae) and a key to the species of this subgenus Author Martínez, Leocadia Sánchez Author Flechtmann, Carlos H. W. Author De Moraes, Gilberto J. text Zootaxa 2014 3846 4 547 560 journal article 45045 10.11646/zootaxa.3846.4.3 60a0cc08-2ae7-428f-a300-d39b9a13f50e 1175-5326 226073 12F1BF5E-F6C0-44CB-8712-7ED7677A4DC9 Petrobia ( Tetranychina ) hispaniola n. sp. Sánchez & Flechtmann (Figs 1–8) DIAGNOSIS . A Petrobia ( Tetranychina ) with long body setae; legs I twice as long as idiosomal length (not including gnathosoma); peritreme ending in anastomosing chambers forming a globular structure; tibia of leg I in males with seta b trichobothrium-like and with 41 solenidia. FEMALE ( holotype + 8 paratypes ). Idiosoma (Fig. 1A) broadly oval 638 (638–820); 545 (358–600) wide. All dorsal setae robust, finely pilose and set on strong tubercles (Fig. 1B). Dorsopropodosomal setae: v2 100 (85–110), 85 (78–85) apart; sc1 145 (120–153), 125 (118–130) apart; sc2 88 (73–88). Hysterosomal setae: c1 190 (188–200), 163 (175–188) apart; c2 183 (163–188); c3 88 (65–83); d1 208 (190–213), 83 (50–75) apart; d2 193 (165–190); e1 195 (173–200), 58 (50–88) apart; e2 185 (163–188); f1 195 (175–203), 30 (25–50) apart; f2 153 (125–163); h1 115 (85–113), 90 (75–112) apart. Integumental striae irregularly transverse, tending to longitudinal between bases of setae e1 ; striae granulated (Fig. 1C). Prodorsum punctated centrally and outlined by striae. Gnathosoma: stylophore rounded anteriorly (Fig. 1D). Peritreme ending in anastomosing chambers forming a globular structure (Fig. 1E). Palp robust ( Fig. 4 A); trochanter and femur indistinctly separated; genu with one posterolateral seta, tibia with a dorsal “claw” and three setae; tarsus with seven setiform structures. Venter : integument transversally striated to setae 3a (intercoxal 3); posterior striae irregularly longitudinal with a small transversely striate rhomboid area posterior to setae 4a (intercoxal 4) ( Fig. 4 B). Pseudanal setae: h2 11 (9–14), h3 10 (11–13). Legs : legs I approximately twice as long as idiosoma not including gnathosoma. Legs I 1327 ( 1042–1340 ), II 570 (518–595), III 645 (577–677), IV 1017 (767–1055). Leg chaetotaxy, from coxae to tarsi (solenidia shown in parentheses, eupathidia shown in square brackets): I: 2 – 1 – 9 – 4 – 15 (+11) – 16(+7)[+3] + 2 duplexes ( Figs 2 B, C) II: 2 – 1 – 7 – 5 – 11 – 11(+1)[+3] + 2 duplexes ( Figs 2 D, E) III: 1 – 1 – 5 – 5 – 10 – 14(+1) ( Figs 3 A, B) IV: 1 – 1 – 5 – 5 – 10 – 14 (+1) ( Figs 3 C, D) Variation in leg I chaetotaxy: tibia I: three specimens with 15(9); one specimen with 15(13) and one specimen with 14(12); tarsus I: four specimens with 18(8) + 2 duplexes. Empodia I–IV clawlike, distally recurved, with two rows of 12 tenent hairs directed ventrally; claws (true claws) padlike, about one third length of uncinate empodium, with tenet hairs ( Fig. 2 A). MALE (n = 1 paratype ) Much smaller than female, 325 long not including gnathosoma, 365 long including gnathosoma, 175 wide ( Fig. 5 ). Most dorsal idiosomal setae much shorter and broader than those of female ( Fig. 5 ): v 2 31, 35 apart; sc1 61, 77 apart; sc2 40; c1 38, 58 apart; c2 37; c3 27; d 1 25, 36 apart; d2 33; e 1 20 , 28 apart; e2 20 ; f 1 22, 10 apart; f2 25; h 1 39, 30 apart. Palp robust ( Fig. 8 A); trochanter and femur indistinctly separated; genu and tibia also indistinctly separated, with four setae; tarsus with seven setiform structures. FIGURE 1. Petrobia ( Tetranychina ) hispaniola Sánchez & Flechtmann n. sp., female. A. Dorsal idiosoma dorsal; B. Seta sc1 ; C. Detail of integument; D. Dorsal outline of stylophore; E. Peritreme. FIGURE 2. Petrobia ( Tetranychina ) hispaniola Sánchez & Flechtmann n. sp., female, legs. A. Empodium; B. Tarsus I; C. Tibia I; D. Tarsus II; E. Tibia II. Tactile setae unmarked; solenidia, eupathidia and duplex setae indicated by ω, ξ and Δ. Legs : relative lengths similar to female. Leg I 1235 , II 532, III 585, IV 863. Leg chaetotaxy, from coxae to tarsi, solenidia in parentheses: I: 2 – 1 – 9 – 4 – 3(+41) + 5 duplexes + b (a trichobothrium-like seta) – 10(+15)[+2] + 5 duplexes ( Figs 6 A, B, C) II: 2 – 1 – 8 – 5 – 11 – 13(+2)[+2] + 1 duplex ( Figs 6 D, E) III: 1 – 1 – 5 – 5 – 10 (+1) – 14(+1) ( Figs 7 A, B) IV: 1 – 1 – 5 – 5 – 11 – 14(+1) ( Figs 7 C, D) On tibia of leg I seta d has the typical aspect of a trichobothrium. Tarsus I with four duplex setae. Venter : setae h2 13, h3 14 ( Fig. 8 B). Aedeagus similar to those of other species for which the male is known: lanceolate, narrowing gradually and apically rounded; with two lateral acicular appendices. ETYMOLOGY: The name hispaniola refers to the island shared by Haiti and Dominican Republic . FIGURE 3. Petrobia ( Tetranychina ) hispaniola Sánchez & Flechtmann n. sp., female, legs. A. Tarsus III; B. Tibia III; C. Tarsus IV; D. Tibia IV. Tactile setae unmarked; solenidia indicated by ω. FIGURE 4. Petrobia ( Tetranychina ) hispaniola Sánchez & Flechtmann n. sp., female. A. Palpus; B. Genito-anal region. TYPE MATERIAL : Female holotype and five female paratypes from orange ( Citrus sinensis Osbeck ; Rutaceae ) leaves, and three female and one male paratypes from rose ( Rosa sp.; Rosaceae ) leaves, all from Río Seco, La Vega, Dominican Republic (Caribbean), collected by a group of undergraduate students in Nov. 2010 ; all deposited at Departamento de Entomologia e Acarologia (ESALQ-USP), Piracicaba-SP, Brasil . REMARKS: Petrobia ( T. ) hispaniola n.sp. resembles P . ( T .) harti Ewing, 1909 sensu Pritchard & Baker (1955) and Baker & Tuttle (1994) , in the aspect of the dorsal body setae and length of female leg I, but it is distinguished by the different peritreme (straight, ending in a simple chamber in P. ( T .) harti ). It also resembles P. ( T. ) kleptes Kamran & Afzal, 2004 by having dorsal setae long and inserted on tubercles; however, it is distinguished by the different peritreme (distally hooked and ending in a simple chamber in P. ( T. ) kleptes ). In this new species, tibial seta d has a trichobothridial aspect, which is found only in some Bryobiinae ; in those cases, that seta is denoted by db ( Grandjean, 1943 ; Lindquist, 1985 ). In the new species here described, that type of seta is only found in the male. This is the first species of Petrobia ( Tetranychina ) reported from roses and the third from Citrus [together with P . ( T .) harti and P . ( T .) kleptes ]. Although Lindquist (1985) had mentioned the number of solenidia on tibia I of male to be up to 30, in the species here described the number is much higher (41).