Procalacarus perporosus, Flechtmann, Carlos H. W. & De, Dalva L., 2010

Flechtmann, Carlos H. W. & De, Dalva L., 2010, New taxa in the Eriophyidae (Acari, Prostigmata) from forest trees in southern Brazil, Zootaxa 2337, pp. 18-30 : 21

Procalacarus perporosus n. sp.

( Fig. 2 )

Diagnosis. P. perporosus is the second species assigned to this genus and is distinctive in presenting eight longitudinal rows of slit “wax” producing pores on anterior one third of opisthosomal dorsum, which merge into five rows on posterior two thirds (five rows throughout entire opisthosoma in P. aliyarensis Mohanasundaram, 1983 ) and in having the median line on the posterior half of the prodorsal shield ornamentation and surrounded by a clear geometric pattern as figured (no median line in P. aliyarensis ).

Female (n = 6). Body spindleform, robust, 179(173–216), 69(65–80) wide. Dorsum of opisthosoma entirely covered with five thick longitudinal white wax-like strands and prodorsal shield with irregular “waxy” masses. Gnathosoma: apical seta (d) 11(10–12); basal seta (ep) robust, spine-like, 3(3); chelicerae 17(16–19). Prodorsal shield 47(41–47), 61(59–75) wide, shield with five cells on each side; median line present on posterior half and inserted in a lozenge design as figured. Scapular tubercles 26(26–28) apart; scapular setae missing. Shield with a broad, rounded anterior lobe, 7(6–7) and 26(23–31) basal width. Legs: tibia I and genu II setae missing. Leg I 30 (29–31); femur 9(9–10), femoral seta (bv) 11(11–14); genu 4(4), genual seta (l”) 31(26–32); tibia 6(6–8), tibial seta (l’) missing; tarsus 5(5–7), dorsal seta (ft’) 19(17–19), lateral seta (ft”) 22(21–23), unguinal seta (u’) 5(4–6), solenidion 7(5–7), distally expanded, empodium 5(5), 5-rayed. Leg II 28 (27–30); femur 9(9–10), bv 11(10–11); genu 4(4), l” missing; tibia 6(-6); tarsus 6(6–7), ft’ 8(6–8), ft” 18(18–21), u’ 5(4–5), solenidion 5(5–7), expanded distally, empodium 5(4–5), 5-rayed. Coxae smooth, with all usual setae. Coxal seta I (1b) 9(-11), 12(11–14) apart; coxal seta II (1a) 14(12–14), 9(8–10) apart; coxal seta III (2a) 33(31–40), 26(23–39) apart. Sternal line 8(8–10). Coxisternal region with 5(5–6) annuli, microtuberculate. Genitalia 28(27–29) wide, 16(16–21) long; epigynum with short radial lines distally, otherwise smooth. Genital seta (3a) 14(11–14). Opisthosoma with eight longitudinal rows of slit pores, producing a white wax-like substance, on anterior one third opisthosoma dorsum, which merge into five rows of pores on posterior two thirds. Lateral seta (c2) 21(18–25), on annulus 1(1–3). Ventral seta I (d) 48(45–55), longer than distance d -e, 31(31–35) apart, on annulus 16(16–20); ventral seta II (e) 20(17–20), 21(18–22) apart, on annulus 35(35–40); ventral seta III (f) 22(21–23), 23(23–26) apart, on annulus 53(53–59) or 6(6–7)th from rear. Total dorsal annuli 66(66–73); total ventral annuli 59(59–66), microtuberculate. Caudal seta (h2) 42(42–48); accessory seta (h1) missing.

Male. Not seen.

Type material. Female holotype and 35 female paratypes, from Randia armata (Sw.) (Rubiaceae) , Campus Embrapa Florestas, Colombo, Paraná, Brazil, 25º19’S and 49º09’W, August 2008, collected by Dalva L. de Queiroz, on 8 microscopic preparations, in the collection of Departamento de Entomologia e Acarologia, ESALQ – Universidade de São Paulo, Piracicaba, São Paulo, Brazil.

Relation to host. Vagrant on leaves; no apparent damage.

Etymology. The specific designation perporosus is from the Latin, per, meaning very, exceedingly, plus porosus, Latin, meaning full of pores and refers to the large number of slit-like pores on the dorsal opisthosomal annuli.

Figures

FIGURE 2. Procalacarus perporosus n. sp., female. D—dorsal aspect; L 1 — leg I; L 2 — leg II; VA—ventral anterior or coxigenital region.