Lorryia fortistriata, Mondin, Alexandre De Souza, Nuvoloni, Felipe Micali & Feres, Reinaldo José Fazzio, 2016

Mondin, Alexandre De Souza, Nuvoloni, Felipe Micali & Feres, Reinaldo José Fazzio, 2016, Four new species of Lorryia (Acari: Tydeidae) associated with Hevea brasiliensis Muell. Arg. (Euphorbiaceae) in Brazil, Zootaxa 4158 (4), pp. 473-490 : 479-484

Lorryia fortistriata sp. nov.

( Figs. 6 ; 7; 11A; 11B)

Diagnosis. Lorryia fortistriata sp. nov. has acute and smooth dorsal setae. The dorsal ornamentation is characterized by the absence of reticulation, with dense striated pattern. Palptarsus eupathidium (pζ) straight and rounded distally.

Dorsum ( Figs. 6 A; 11A): Prodorsum recurved. Twelve pairs of smooth and slightly curved setae, of medium length ( Fig. 6 D; Fig. 11 B), and filiform, smooth trichobothria (bo) ( Fig. 6 E). Dense dorsal striation, which contains reduced space between its bands ( Fig. 6 F). Ornamentation type “ Tydeus ” ( Kaźmierski 1998), without reticulated areas. Lyrifissure ia ( Fig. 6 B) lies posteriorly to c2, at the distance as long as distance between c1 and c2. Lyrifissure im ( Fig. 6 C) lies in same longitudinal row as ia, anteriorly and close to e. Dimensions: length of idiosoma 200 (185–257) and width 138 (135–195). Dorsal setae: ro 15 (10–15), la 12 (10–13), bo 34 (26–42), ex 13 (10–14), c1 13 (10–13), c2 13 (9–13), d 14 (11–14), e 13 (11–13), f1 13 (11–15), f2 15 (12–15), h1 15 (11–15), h2 15 (10–15), ps1 9 (5–11).

Venter ( Fig. 7 A): Ornamentation on metasternal region with “V” like striation, anogenital region with six pairs of genital, four pairs of aggenital and one pseudanal setae.

Gnathosoma ( Fig. 1 A, 1B): Gnathosoma visible from above. Palp setal count 6+1ω –2–2. Tarsal eupathidium straight and distally rounded, without terminal dilation. Palp length 43 (38-52), tarsus ( Fig 7 B) elongate, length 20 (19-20), width 4 (4-5).

Legs: Nude leg setae. All tarsi with terminal claws and hairy empodium, empodial hook present ( Fig. 7 D). Solenidion ω I thin and of medium length, as long as two thirds of tarsal width. Solenidion ω II very short. Oval coxal organ ( Fig. 7 C). Small seta k on tibia I spatulated ( Fig. 7 D). Measures of each leg: leg I 129 (92-136), leg II 112 (75-115), leg III 118 (83-122), leg IV 129 (85-142).

Etymology. The new species name derives from Latin words forti (strong) and striatum (striation), for remarkably dense dorsal striation, which contains reduced space between its bands.

Specimens examined. Holotype female from H. brasiliensis , clone FDR 5788 from Igrapiúna , Bahia State (13° 48' S, 39° 10' W), 19 November 2008, E. B. Castro coll. ; 6 paratypes females from H. brasiliensis , clone FDR 5788, from Igrapiúna , Bahia State, collected on October and November 2008, E. B. Castro coll. Specimens deposited at Acari collection DZSJRP. Male not found.

Remarks. The new species resembles Lorryia devexa ( Kuznetzov, 1973) due to the pattern of striation type “ Tydeus ”, similar body dimensions (about 200 µm of length and 135 µm of width), palpal tarsi longer than stylet, acute and smooth dorsal setae, short f1 setae (shorter than f1–h1 distance), lyrifissure ia at the distance as long as c1-c2 sector to c2. The species are distinguished by the following characters: dorsal setae of the same length (ro, la and ex 2-4 µm shorter than the other dorsal setae in L. devexa ); “V-like” striation between metasternal setae (longitudinal striation between metasternal setae in L. devexa ); small and delicate empodial hook (large and strong empodial hook in L. devexa ); solenidion ω I as long as 2/3 of tarsus I width (shorter solenidion I in L. devexa , as long as 1/3 of tarsus width).

Figures

FIGURE 1. Typical pattern of gnathosoma and legs in Lorryia species, L. parvireticuli sp. nov. holotype used as model. A— Dorsal view of gnathosoma. B—Ventral view of gnathosoma. C—Leg I. D—Leg II. E—Leg III. F—Leg IV.

FIGURE 6. Lorryia fortistriata sp. nov.. A—Dorsum. B—Lyrifissure ia. C—Lyrifissure im. D—Dorsal seta d. E—Trichobothria (bo). F—Typical dense dorsal striation.

FIGURE 7. Lorryia fortistriata sp. nov.. A—Venter. B—Palptarsus. C—Coxa I, showing the coxal organ (cg). D—Tibia and tarsus of leg I and empodial hook lying under empodium (1).

FIGURE 11. A—Dorsal view of Lorryia fortistriata sp. nov. B—Seta d of Lorryia fortistriata sp. nov. C—Dorsal view of Lorryia virga sp. nov. D—Seta d of Lorryia virga sp. nov.