Eriophyoid mites (Acari: Prostigmata: Eriophyoidea) from fruit trees in Northeastern Brazil — a new genus, three new species and a redescription Author Reis, Aleuny C. Author Gondim, Manoel G. C. Author Návia, Denise Author Flechtmann, Carlos H. W. text Zootaxa 2010 2694 43 56 journal article 46993 10.5281/zenodo.199630 47cf888d-8e7e-4473-927f-5faf62b41593 1175-5326 199630 Aculus pitangae Boczek & Davis, 1984 ( Figs. 7 & 8 ) FEMALE (n=10). Body fusiform, 161–175, 55–63 wide; colour in life, yellowish, dorsally covered with wax. Gnathosoma downcurved, 20 (19–21); basal seta ( ep ) 2–3; apical seta ( d ) 7–8; chelicerae 12. Prodorsal shield 43–47, 52–57 wide, subtriangular; admedian lines not linear but rather curved, with convergences and divergences along 2/3 of posterior shield; admedian lines are convergent on the 1/3 anterior, joining in a triangle whose apex ends at the frontal lobe base; curved and diagonal lines rearing laterally to the dorsal tubercles and following parallel to the anterolateral shield margin, also sinuous; on the ¼ anterior shield, these curved lines join the admedian lines. Scapular setae ( sc ) 12–13, on tubercles 2, placed near the posterior shield margin, 31–40 apart. Frontal lobe 6–7, apically rounded, broad-based, 20–21 wide. Legs with all segments; all usual setae present except for tibial seta ( l ’) on I and II. Legs I 27–28 ; femur 8–9; femoral seta ( bv ) 8–9); genu 4–5; genual seta ( l” ) 23–27; tibia 5–7; tibial seta ( l’ ) absent, but on the basal area there are two transversal slightly diagonal lines forming a keel; tarsus 5–6; lateral seta ( ft” ) 17–19; dorsal seta ( ft’ ) 15–16; unguinal seta ( u’ ) 3–4; solenidion (ω) 5–6; empodium simple, 5, 4-rayed. Leg II 25–27 ; femur 7–9; bv 7–9; genu 4; l” 7–8; tibia 4–5; tarsus 5–6; ft” 16–17; ft’ 4; u’ 3, ω 5–6; empodium 4–5, 4-rayed. Coxae I and II smooth; coxal seta I ( 1b ) 6–7, 11–14 apart; coxal seta II ( 1a ) 20–22, 7–8 apart; coxal seta III ( 2a ) 32–39, 23–25 apart; 7–8 coxigenital annuli, smooth. Genitalia 12–15, 18–20, anterior area with 6–9 irregular, curved transversal lines and distally with 14–16 longitudinal lines; genital seta ( 3a ) 12–14. Opisthosoma 37 (36–38) dorsal annuli, with two longitudinal bands of microtubercles in the median area and (join) merging gradually, forming a unique median microtuberculated band; these areas covered by a small amount of a wax-like secretion; posterior annuli (approximately the four caudal ones) not microtuberculated; a slight central elevation dorsal to the ventral seta II ( e ); 50–57 ventral annuli finely microtuberculated on 2/3 anterior opisthosoma and microtubercles becoming gradually more elongated posterior to ventral seta II ( e ). Lateral seta ( c2 ), 12–16, on annulus 3–4; ventral seta I ( d ) 48–56, on annulus 14–16, 26–34 apart, 14–20 microtubercles apart; ventral seta II ( e ) 11–14 on annulus 30–33, 12–16 apart, 7–10 microtubercles apart; ventral seta III ( f ) 14–16, on annulus 47–52, 17–19 apart, 12–16 microtubercles apart. Caudal seta ( h2 ) 50–60; accessory seta ( h1 ) absent. FIGURE 7. Aculus pitangae – CGM. Coxigenital region, male; D. dorsal habitus, female; em. empodium, leg I, female; GF. genitalia, female; LM. lateral habitus, female; L1. leg I, female; L2. leg II, female; V. ventral habitus, female. MALE (n=5 ). Smaller than female, 134–152, 49–54 wide. Gnathosoma 19–20; basal seta ( ep ) 3–4; apical seta ( d ) 7–8; chelicerae 11–12. Prodorsal shield as in female, 42–43, 46–48 wide. Scapular setae ( sc ) 10 on tubercles, 27–30 apart. Frontal lobe 6, 19–21 wide. Legs as in female. Leg I 25–27 ; femur 7–8, femoral seta ( bv ) 8; genu 4–5, genual seta ( l ”) 23–25; tibia 5–6; tarsus 5, lateral seta ( ft ”) 17–18, dorsal seta ( ft ’) 15– 17, unguinal seta ( u’ ) 4, solenidion (ω) 5; empodium 5, 4-rayed. Leg II 23–28 ; femur 7, bv 8; genu 4, l ” 7; tibia 5; tarsus 5, ft ” 16, ft ’ 4–5, u ’ 3, ω 5–6; empodium 5, 4–rayed. Coxae as in female. Sternal line 8–9. Coxal seta I ( 1b ) 5, 11–12 apart; coxal seta II ( 1a ) 21–23, 6–7 apart; coxal seta III ( 2a ) 33–35, 21–24 apart; 7–9 coxigenital annuli, smooth. Genitalia 15–16, 10–11 wide, posterior region granulated, eugential setae as figured; genital seta ( 3a ) 11–12. Opisthosoma as in female, 34–35 dorsal annuli; 44–45 ventral annuli. Lateral seta ( c2 ) 12–16, on annulus 1–2; ventral seta I ( d ) 45–50, on annulus 11–12, 20–24 apart, 10–12 microtubercles apart; ventral seta II ( e ) 10–12, on annulus 24–25, 11–13 apart, 8–9 microtubercles apart; ventral seta III ( f ) 15, on annulus 39–40, 16–18 apart, 11–14 microtubercles apart. Caudal seta ( h2 ) 55; accessory seta ( h1 ) absent. FIGURE 8. Aculus pitangae A . dorsal habitus, female; B. ventral habitus, female; C . prodorsal shield; D . frontal lobe; E . genitalia, male; F . epigynum; G . apical seta abruptly curved upwards; H . leg II, female; I. leg I, female. Material examined. 44 females and 22 males from Eugenia uniflora L ( Myrtaceae ), Recife, Pernambuco, Brazil . 08° 01’ 07” S , 34° 56’ 41” W , 0 4 August 2008 , coll. A. C. Reis, on 8 microscope slide. Material 42 specimens ( 22 females and 20 male , on 6 microscope slides) deposited in the collection of the Laboratório de Acarologia, Departamento de Agronomia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil and 24 specimens ( 22 females and 2 male , on 2 microscope slides) in the collection of the Laboratório de Quarentena Vegetal, Embrapa Recursos Genéticos e Biotecnologia, Brasília , DF, Brazil . We had no access to the type material. Relation to host. Vagrant on the lower leaf surface. Remarks. In the original description of A. pitangae , Boczek and Davis (1984) noted the presence of a tibial seta ( l’ ) 2 Μm long on leg I. In the new material studied here, no such seta was apparent on the tibia of leg I. However, some transversal, slightly diagonal lines which join in a keel, were observed on basal tibia I. In the generic description of Aculus , Keifer (1959) refers to the presence of all usual setae on the legs. Observations on the leg chaetotaxy in this present study indicated that the taxon, A. pitangae , would not be correctly placed in Aculus if considering its strict generic concept. According to Amrine et al. , (2003) , the genus Neocolopodacus Mohanasundaram, 1980 is close to Aculus , presenting numerous characters in common with it, except for the absence of the tibial seta on leg I. However, a remarkable character that avoids a proposition of a new combination for A. pitangae is the presence of a frontal lobe, which is absent in Neocolopodacus .