Solivagus alpha, Reis & Gondim & Návia & Flechtmann, 2010

Reis, Aleuny C., Gondim, Manoel G. C., Návia, Denise & Flechtmann, Carlos H. W., 2010, Eriophyoid mites (Acari: Prostigmata: Eriophyoidea) from fruit trees in Northeastern Brazil — a new genus, three new species and a redescription, Zootaxa 2694, pp. 43-56 : 46-47

Solivagus alpha n. gen. n. sp. Reis & Navia

( Figs. 1 & 2 )

FEMALE (n=10). Body fusiform, 207 (202–226), 70 (60–80) wide; yellowish in life. Gnathosoma prominent, projecting perpendicular to the body axis, 35 (35–36); basal seta (ep) 3 (2–3); apical seta (d) 12 (11–12) simple. Prodorsal shield subrectangular, 30 (30–34), 64 (53–68) wide. Prodorsal shield design does not show longitudinal, median and admedian lines as such but rather presents rows of cells that includes in the central area, two rows of subrectangular, longitudinal cells; posterior median shield rear with two divergent diagonal lines directed to central area joining the base of posterior row of cells arranged in a triangle; lateral areas with irregular, somewhat curved, transversal or diagonal lines; frontal lobe short, wide and thin. Scapular setae (sc) missing, shield tubercles present, minute, with longitudinal bases and placed near rear shield margin, 27 (25–28) apart. Legs with all segments; femoral seta (bv) on legs I and II, and genual seta (l”) on leg II, absent. Legs I 38 (37–38); femur 10 (10); genu 5 (5), genual seta (l”) 35 (31–35); tibia 11 (10– 12), tibial seta (l ’) 7 (6–7); tarsus 7 (7–8), dorsal seta (ft’) 22 (21–22), lateral seta (ft’’) 20 (18–21), unguinal seta (u’) 4 (4–5), solenidion (ω) strongly knobbed 7 (7); empodium simple, 5 (5–6), 5-rayed, apically bifurcate. Legs II 36 (33–37); femur 10 (9–10); genu 5 (5); tibia 9 (9–10); tarsus 7 (6–7), ft ” 20 (19–21), ft ’ 6 (5–6), u’ 4 (4–5), ω 7 (7); empodium 6 (5–6), 5-rayed, apically bifurcate. Coxae I and II with granulated areas. Sternal line 11 (11–12). Coxal seta I (1b) absent; coxal seta II (1a) 16 (16–17), 11 (11–14) apart; coxal seta III (2a) 41 (39–42), 30 (27–35) apart; 7 (7–8) coxigenital annuli, microtuberculated. Genitalia 21 (21– 26), 35 (32–36) wide, coverflap with two rows of longitudinal lines, discontinuous in the median area; proximal with 23 (18–22) lines, and distal with 23 (19–24) lines; genital seta (3a) 10 (10–11). Opisthosoma with 80 (78–82) dorsal annuli, 74 (68–74) ventral annuli. Small, pointed microtubercles on the posterior annulus margins of dorsolateral and ventral opisthosoma only, that is, anterior two thirds of dorsomedian annuli smooth. Lateral seta (c2) 16 (15–16), on annulus 2 (1–3); ventral seta I (d) 15 (15–18), on annulus 19 (16–19), 57 (54–65) apart, 61 (47–62) microtubercles apart; ventral seta II (e) 18 (16–18), on annulus 38 (32– 38), 26 (21–31) apart, 23 (20–28) microtubercles apart; ventral seta III (f) 27 (25–27), on annulus 64 (56–64), 3 (26–35) apart, 23 (22–27) microtubercles apart. Caudal seta (h2) 74 (66–74); accessory seta (h1), minute.

MALE (n=5). Smaller than female, 164–189, 62–65 wide. Gnathosoma 31–32; basal seta (ep) 2 (2); apical seta (d) 9–11, simple. Prodorsal shield as in female, 26–30, 50–55 wide. Scapular setae (sc) missing, shield tubercles as in female, 20–24 apart. Legs as in female. Leg I 32 –33; femur 9 (9); genu 5, genual seta (l”) 24–26; tibia 10–11, tibial seta (l’) 6–7; tarsus 6–7, lateral seta (ft”) 19–20, dorsal seta (ft’) 19–20, unguinal seta (u’) 4–5, solenidion (ω) 6–7, empodium 5, 5-rayed. Leg II 30–32; femur 9–10; genu 5; tibia 8– 9; tarsus 6–7, ft” 17–18, ft’ 5–6, u’ 4, ω 6–7, empodium 4–5, 5-rayed. Coxae smooth. Sternal line 9–11. Coxal seta I (1b) absent; coxal seta II (1a) 9, 12–16 apart; coxal seta III (2a) 27–30, 20–25 apart; with 6–7 coxigenital annuli, microtuberculated. Genitalia 16–20, 19–22 wide, posterior region granulated, eugential setae as figured; genital seta (3a) 9–10. Opisthosoma as in female, 71–76 dorsal annuli; 60–62 ventral annuli. Lateral seta (c2) 13–15, on annulus 1; ventral seta I (d) 13–14 on annulus 12–14, 35–40 apart, 39–40 microtubercles apart; ventral seta II (e) 12–13, on annulus 28–30, 18–20 apart, 18–23 microtubercles apart; ventral seta III (f) 20–22, on annulus 50–52, 24–26 apart, 19–23 microtubercles apart. Caudal seta (h2) 65; accessory seta (h1), minute.

Type material. Female holotype, 34 female and 11 male paratypes, from Spondias mombin L. ( Anacardiaceae ), Recife, Pernambuco, Brazil. 08° 01’ 07” S, 34° 56’ 41” W, 0 6 August 2008, coll. A. C. Reis, on 7 microscope slides. Holotype and paratypes (36 specimens, 26 females and 10 males, on 5 microscope slides) deposited in the collection of the Laboratório de Acarologia, Departamento de Agronomia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil. Paratypes (9 specimens, 8 females and 1 male, on 2 microscope slides) also deposited in the collection of the Laboratório de Quarentena Vegetal, Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil.

Relation to host. Vagrant on the lower leaf surface; no visible damage.

Etymology. The specific designation alpha , first letter of the Greek alphabet, refers to this species being the first to be described in the new genus, Solivagus .

Figures

FIGURE 1. Solivagus alpha n. gen., n. sp. – CGM. Coxigenital region, male; D. dorsal habitus, female; em. empodium, leg I, female; GF. genitalia, female; LM. lateral habitus, female; LO. lateral opisthosoma view of anterior section of mite; L 1. leg I, female; L 2. leg II, female; V. ventral habitus, female.

FIGURE 2. Solivagus alpha n. gen., n. sp. A. dorsal habitus, female; B. ventral habitus, female; C. lateral habitus, female; D. prodorsal shield; E. epigynum; F. leg I and leg II, female.