Porcupinotus costaspinosus, Navia, Denise & Flechtmann, Carlos H. W., 2007

Navia, Denise & Flechtmann, Carlos H. W., 2007, Three new species of Phyllocoptinae mites (Prostigmata: Eriophyidae) associated with ornamental plants in Brazil, Zootaxa 1386, pp. 39-46 : 43-46

Porcupinotus costaspinosus n. sp. ( Fig. 3 )

( Eriophyidae , Phyllocoptinae , Anthocoptini )

Diagnosis — Prodorsal shield with an elongate framelike design and a posterior transverse arched line; shield with a posterior humplike projection and first three opisthosomal annuli prominent, only visible in lateral view. In a dorsoventral mounting, the posterior shield hump flattens into a posterior shield lobe which also flattens down the first dorso­opisthosomal annuli backwards. These then appear to curve around the shield lobe margin in their central portion. Opisthosoma dorsum with basically five longitudinal ridges made up of a series of uneven, wide based wax­bearing triangular spines. From approximately the eighth to the 23 rd dorsal annuli, the median ridge is divided into two longitudinal rows of spines, from approximately the 24th dorsal annulus, the median ridge is once again unique, ending at the 27th annulus.

Female (Measurements of holotype and range of 7 paratypes) — Body fusiform, 187 (180–219) long, 57 (52–65) wide. Gnathosoma projecting downwards, 21 (20–23) long; basal seta (ep) 2 (2–4) long; antapical seta 6 (5–6) long. Chelicerae 18 (18–22) long; oral stylets 16 (15–18) long. Prodorsal shield 41 (37–41) long, 49 (43–49) wide, subhexagonal, slightly ornated with sinuous faint lines in the anterolateral region. Scapular seta (sc) 24 (20–25) long, directed backwards, on elongated tubercles 9 (8–10) long, placed on rear shield margin, 23 (22–24) apart. Prodorsal shield with an elongate framelike design and a posterior transverse arched line; shield with a posterior humplike projection. Frontal lobe apically rounded, broad–based, 5 (5–7) long, 13 (12–13) wide. Legs with all setae present. Legs I 28 (28–31) long; femur 10 (9–10) long, femoral seta (bv) 11 (11–12) long; genu 5 long, genual seta (l’’) 21 (21–23) long; tibia 6 (6–8) long, tibial seta (l’) 7 (7–9) long; tarsus 6 (6–7) long, lateral seta (ft’’) 21 (18–21) long, dorsal seta (ft’) 17 (15–17) long, unguinal seta (u’) 5 (4–5) long, solenidion 7 (7–8) long; empodium 5 (5–7) long, 7­ rayed. Legs II 27 (26–28) long; femur 9 long, bv 14 (13–15) long; genu 5 long, l’’ 11 (9–11) long; tibia 5 (5–6) long; tarsus 5 (5–6) long, ft’’ 19 (19–21) long, ft’ 7 (6–7) long, u’ 4 (3–4) long, solenidion 8 (8–9) long; empodium 6 (6–7) long, 7­rayed. Coxae with sinuous faint lines and few granules. Sternal line conspicuous, 6 (6–8) long. Coxal seta I (1b) 10 (9–11) long, 11 (10– 11) apart; coxal seta II (1a) 22 (22–28) long, 8 (8–9) apart; coxal seta III (2a) 35 (35–41) long, 23 (20–23) apart; 6 (6–7) coxigenital semi annuli, the first ones smooth and the posterior microtuberculated. Genitalia 23 (20–23) wide, 15 (12–15) long; epigynum with granules on the anterior area and a row of 16 longitudinal lines; genital seta (3a) 31 (31–38) long. Opisthosoma with 43 (41–46) dorsal annuli; ventrally with 56 (53– 66) annuli, first three opisthosomal annuli prominent in lateral view. Opisthosoma dorsum with five longitudinal ridges made of a series of wax­bearing, wide­based, triangular spines. From approximately the eighth to the 23rd dorsal annuli, the median ridge is divided into two longitudinal rows of spines. From approximately the 24th dorsal annulus, the median ridge is again unique, ending at the 27th annulus. Lateral seta (c2) 28 (26– 29) long, in line with 3 (2–3) ventral annulus. Ventral seta I (d) 46 (46–50) long, 43 (40–45) apart, 22 (21–30) microtubercles apart, on annulus 16 (15–21); ventral seta II (e) 15 (15–16) long, 24 (21–25) apart, 13 (11–15) microtubercles apart, on annulus 30–31 (29–38); ventral seta III (f) 24 (23–25) long, 20 (20–22) apart, 13 (13– 18) microtubercles apart, on annulus 51 (48–61). Caudal seta (h2) 89 (80–91) long; accessory seta (h1) 2 (2–4) long.

Male (Measurements of 5 paratypes) — Smaller than female, 156–174 long, 50–56 wide. Gnathosoma 21–23 long; basal seta (ep) 2–3 long; antapical seta 5–6 long. Chelicerae 18–19 long; oral stylets 14–15 long. Prodorsal shield as in female, 33–38 long, 39–46 wide. Scapular seta (sc) 20–22 long, on elongated tubercles 20–21 apart. Frontal lobe 5–8 long, base 10–13 wide. Legs as in female. Leg I 28–31 long; femur 10 long, femoral seta (bv) 12–13 long; genu 4–5 long, genual seta (l’’) 17–23 long; tibia 5–7 long, tibial seta (l’) 5–7 long; tarsus 5–7 long, lateral seta (ft’’) 18–20 long, dorsal seta (ft’) 14–17 long, unguinal seta (u’) 4 long, solenidion 7–8 long; empodium 6–7 long, 7–rayed. Legs II 26–28 long; femur 8–9 long, bv 12–15 long; genu 5 long, l’’ 9– 10 long; tibia 4–5 long; tarsus 5–6 long, ft’’ 18–20 long, ft’ 5–7 long, u’ 3–4 long, solenidion 8–9 long; empodium 6–7 long, 6–rayed. Coxae I with sinuous faint lines and coxae II with granules. Sternal line 5–8 long. Coxal seta I (1b) 9–11 long, 9–10 apart; coxal seta II (1a) 20–25 long, 7–8 apart; coxal seta III (2a) 33–38 long, 20–23 apart; 7–11 coxigenital semi annuli, microtuberculated. Genitalia 17–19 wide, 12–13 long, with granules, papillae as figured; genital seta (3a) 20–24 long. Opisthosoma as in female, with 41–49 dorsal annuli; 45–50 ventral annuli. Lateral seta (c2) 27–30 long, on line with annulus 1–2. Ventral seta I (d) 41–46 long, 36–41 apart, 18–24 microtubercles apart, on annulus 11–13; ventral seta II (e) 14–17 long, 19–23 apart, 10–14 microtubercles apart, on annulus 24–27; ventral seta III (f), 17–24 long, 19–20 apart, 14–20 microtubercles apart, on annulus 43–49. Caudal seta (h2) 77–84 long; accessory seta (h1) 3 long.

Type material — Female holotype, 45 female and 16 male paratypes, from Abarema cochliacarpos (Gomes) Barneby & J. W. Grimes (Mimosaceae) , Brasília, Distrito Federal, Brazil, 15°47'S and 47°55'W, 6th September 2005, collected by L. Calvoso Miranda, on 11 slides, in the collection of Laboratório de Quarentena Vegetal, Embrapa Recursos Genéticos e Biotecnologia, Brasilia, DF, Brazil and paratypes in the collection of Departamento de Entomologia, Fitopatologia e Zoologia Agrícola, Universidade de São Paulo, ESALQ, Piracicaba, São Paulo, Brazil.

Relation to host — Mites are vagrants, causing no apparent damage.

Etymology — The specific designation is derived from the Latin “costa”, rib, ridge, and "spinosus", thorny, in reference to the dorsal opisthosomal ridges made of spines.

Figures

FIGURE 3. Porcupinotus costaspinosus n. sp. D — Dorsal habitus of female. V — Ventral habitus of female. L — Lateral habitus of female. M — Coxigenital region of male. L 1 — Leg I. L 2 — Leg II. E — Empodium (enlarged).