Catarhinus granatus, Reis & Gondim & Navia & Flechtmann, 2011

Reis, Aleuny C., Gondim, Manoel G. C., Navia, Denise & Flechtmann, Carlos H. W., 2011, New eriophyoid mites (Acari: Prostigmata: Eriophyoidea) from banana and heliconia in Northeastern Brazil — two new genera and three new species, Zootaxa 3042, pp. 15-26 : 23-26

Catarhinus granatus n. sp. Reis & Navia

Diptilomiopidae : Rhyncaphytoptinae ( Figs. 5 & 6 )

Diagnosis. Catarhinus granatus n. sp. has irregular granules on the entire prodorsal shield; dorsal annuli with well defined and elongated microtubercles; coverflap with two rounded cells in the basal area and distal area slightly granulated, with short longitudinal lines; coxae smooth; empodia 6-rayed. It is similar to Catarhinus tricholaenae Keifer 1959 , Catarhinus axonopi Boczek 1960 , Catarhinus raii Mohanasundaram 1984b , Catarhinus imperatae Chandrapatya 1993 ( Chandrapatya & Boczek 1993) and Catarhinus brachiariae Flechtmann 2004 , in possessing 6-rayed empodia. However, it can be distinguished from the first four species by having a granulated prodorsal shield (smooth in C. tricholaenae , C. axonopi , C. raii and C. imperatae ). Catarhinus brachiariae is similar to the new species in having the presence of granules on the prodorsal shield and microtubercles on the dorsal annuli. However, in the new species, the prodorsal shield is covered with irregularly distributed granules, variable in size and shape while in C. brachiariae , it is entirely and uniformly covered with coarse, rounded granules. Also in the new species, the dorsal microtubercles are well defined while in C. brachiariae they are faint. Other differences between the new species and C. brachiariae include the coxigenital area pattern (smooth and with the anterior area of coxae I presenting a concave structure [line] crossing the sternal line that resembles a shirt ruff in the new species and with dashes and lines; without the “ruff” structure in C. brachiariae ) and coverflap (transversely divided in C. brachiariae and entire in the new species).

‘ FEMALE (n=10). Body fusiform, 215 (190–227) e 81 (77–85) wide; colour in life, yellowish. Gnathosoma downcurved, 41 (39–43); apical seta bent down at a right angle near apex (hook-shaped) 3 (3); antapical seta (d) 12 (12–15). Prodorsal shield 55 (54–58), 76 (70–76) wide, granules of irregular shape and size covering the entire prodorsal shield; a curved line just ahead of rear shield margin as long as the distance between scapular tubercles. Frontal lobe broad based, anteriorly rounded, 13 (11–14), 38 (35–41) wide. Scapular seta (sc) 4 (4–5) directing upwards, on small tubercles with longitudinal bases, ahead of rear shield margin, 19 (18–23) apart. Legs with all segments; lacking femoral seta (bv) on leg I and tibial seta (l') on leg II. Leg I 38 (36–39); femur 12 (12–13); genu 5 (5–6), genual seta (l") 33 (31–35); tibia 10 (8–10), tibial seta (l') 16 (15–18); tarsus 7 (7), lateral seta (ft") 28 (27– 30), dorsal seta (ft') 24 (24–27), unguinal seta (u') 7 (7), angulated, solenidion (ω) 7 (7–8), knobbed apically, empodium 6 (6–8), 6-rayed. Leg II 34 (34–36); femur 11 (11–12), bv 11 (9–11); genu 5 (5–6), l " 10 (9–10); tibia 7 (7–9); tarsus 7 (7), ft" 24 (24–26), ft' 6 (5–7), u' 6 (6), ω 7 (7–8); empodium 7 (6–8), 6-rayed. Coxae I and II smooth; anterior area of coxae I presenting a concave structure crossing the sternal line that resembles a shirt ruff. Sternal line 12 (12–15). Coxal seta I (1b) 14 (13–15), 14 (9–15) apart; coxal seta II (1a) 22 (22–30), 9 (7–9) apart; coxal seta III (2a) 43 (40–44), 29 (21–29) apart. Genitalia 20 (17–21), 32 (31–33) wide, coverflap with two separated, rounded cells in the basal area and a few granules and short longitudinal lines in the distal area; genital seta (3a) 10 (10–14). Opisthosoma with a middorsal longitudinal ridge fading and absent above seta f, 32 (31–35) dorsal annuli, with elongated microtubercles; 63 (59–64) ventral annuli, with rounded and small microtubercles. Lateral seta (c2) 13 (12–15), on annulus 2 (2–3). Ventral seta I (d) 71 (71–80), on annulus 14 (13–17), 43 (37–46) apart, 23 (23–32) microtubercles apart; ventral seta II (e) 8 (8–10), on annulus 35 (32–36), 19 (19–21) apart, 13 (13–17) microtubercles apart; ventral seta III (f) 25 (24–31), on annulus 57 (53–58), 24 (24–16) apart, 20 (19–24) microtubercles apart. Caudal seta (h2) 60 (60–63); accessory seta (h1), minute.

MALE (n=5). Smaller than female, 160–180, 64–66 wide. Gnathosoma 35–41; basal seta (ep) 2–3; antapical seta (d) (8–10). Prodorsal shield as in female, 46 (45–48), 59 (58–62) wide. Scapular seta (sc) 3 (3) on tubercles, 21 (12–21) apart. Frontal lobe 11 (11–12), 32 (29–33) wide. Legs as in female. Leg I 29–31; femur 10–11; genu 4– 5, genual seta (l") 23–28; tibia 8–9, tibial seta (l') 13–16; tarsus 6–7, lateral seta (ft") 22–25, dorsal seta (ft') 21–23, unguinal seta (u') 6, solenidion (ω) 6–7, empodium 6, 6-rayed. Leg II 28–30; femur 8–10, bv 7–9; genu 4–5, l" 8; tibia 6–7; tarsus 6–7, ft" 20–22, ft' 5–6, u' 6–7, ω 6–7; empodium 5–6, 6-rayed. Coxae as in female. Sternal line 12–13. Coxal seta I (1b) 13–15, 8–12 apart, coxal seta II (1a) 22–24, 8–10 apart; coxal seta III (2a) 28–34, 21–23 apart. Genitalia 14–19, 20–22 wide; genital seta (3a) 10, posterior area granulated, eugential seta as figured. Opisthosoma as in female, 30–32 dorsal annuli; 49–52 ventral annuli. Lateral seta (c2) 13–19, on annulus 1–2. Ventral seta I (d) 50–63, on annulus 10–11, 33–34 apart, 16–20 microtubercles apart; ventral seta II (e) 8–9, on annulus 25–26, 12–18 apart, 8–14 microtubercles apart; ventral seta III (f) 19–22, on annulus 44–46, 21–23 apart, 16–19 microtubercles apart. Caudal seta (h2) 60–62; accessory seta (h1), minute.

Type material. Female holotype, 39 female and 10 male paratypes, collected from Heliconia bihai L. ( Heliconiaceae ), Recife, Pernambuco, Brazil. 08°01'07"S, 34°56'41"W, 0 2 February 2009, coll. A.C. Reis, on 10 microscope slides. Holotype and paratypes (40 specimens, 31 females and 9 males, on 7 microscope slides) deposited in the collection of Departamento de Agronomia, Entomologia Agrícola. Universidade Federal Rural de Pernambuco, Recife, PE, Brazil. Paratypes (10 specimens, 8 females and 1 male on 3 microscope slides) deposited in the collection of the Laboratório de Quarentena Vegetal, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil.

Relation to host. This species is a vagrant on the lower leaf surface. No apparent symptoms were seen. Etymology. The specific designation, granatus , comes from Latin, meaning abundant grain or granules, and refers to the entirely granulated prodorsal shield.

Figures

FIGURE 5. Catahrinus granatus n. sp. CGM. Coxigenital region, male; D. Dorsal habitus, female; em. Empodium, leg I, female; P. Palp; LM. Lateral habitus, female; LO. Lateral opisthosomal view of anterior section of mite, female; L 1. Leg I, female; L 2. leg II, female; V. ventral habitus, female.

FIGURE 6. Catarhinus granatus n. sp. A. Dorsal habitus, male; B. Ventral habitus, male; C. Epigynum; D. Genitalia, male; E. Detail of palp with apical seta hook-shaped, female; F. Prodorsal shield; G. Lateral aspect of prodorsal shield; H. Lateral aspect of opisthosoma, female; I. Dorsal view of legs I and leg II, female; J. Ventral view of legs I and leg II, female; K. Detail of leg I with empodium and solenidion (ω), female.