Transeius kroeffis Gonçalves & Ferla, 2015

Gonçalves, Dinarte, Cunha, Uemerson Silva Da, Bampi, Paula Maria, Moraes, Gilberto José De & Ferla, Noeli Juarez, 2015, Phytoseiid mites (Acari: Mesostigmata) from Araucaria Forest of the State of Rio Grande do Sul, Brazil, with new records and descriptions of four new species, Zootaxa 4032 (5), pp. 569-581 : 571-572

Transeius kroeffis Gonçalves & Ferla n. sp.

( Figs 2–6 )

Diagnosis. This new species belongs to the bellottii species group ( Chant & McMurtry, 2004), characterised by having seta z4 shorter than 2/3 the distance between its base and the base of s4. Within this group, it belongs to the msabahaensis species subgroup, by having a spermatheca with calyx elongate, with sides approximately parallel.

The new species is similar to Transeius msabahaensis Moraes et al., 1989 and Transeius rufus Denmark & Evans, 1999. It differs from T. msabahaensis by having Z4, Z5 and s4 shorter (ratio: 0.41; 0.63; 0.26, respectively); s4 serrate; all macrosetae on leg IV Sg IV and Sti IV longer (ratio: 0.27; 0.13, respectively); calyx of spermatheca shorter (ratio: 0.53) and movable cheliceral digit with seven teeth.

The new species differs from T. rufus by having Z4, Z5 and s4 shorter (ratio: 0.46; 0.64; 0.3, respectively); s4 serrate; all macrosetae on leg IV Sg IV and Sti IV longer (ratio: 0.24; 0.76, respectively) and movable cheliceral digit with seven teeth.

Adult female. Five females examined. Idiosomal setal pattern 10A:9B / JV-3 / ZV ( Chant & Yoshida-Shaul, 1992).

Dorsum ( Fig. 2 ). Dorsal shield with seven pairs of pores and two pairs of lyrifissures, 350 359 (350–378) long, 228 227 (213–240) wide at level of s4; j 1 30 28 (25–30), j 3 23 24 (23–25), j 4 10 10, j 5 13 11 (10–13), j 6 13 11 (10– 13), J 2 14 13 (12–14), J 5 13 11 (10–13), z 2 15 15, z 4 18 21 (18–23), z 5 13 11 (10–13), Z 1 18 18, Z4 73 78 (73–85), Z5 90 94 (90–100), s4 63 72 (63–83), S 2 25 26 (25–28), S 4 15 16 (15–18), S 5 18 18, r 3 18 18, R 1 14 14. Setae smooth and sharp-tipped, except s4, Z4 and Z5 which are serrated.

Venter ( Fig. 3 ). Sternal shield not reticulated, with three pairs of setae and two pairs of lyrifissures, setae St4 on platelets. Distances between St1–St3 63 61 (55–65), St2–St2 70 71 (70–73), St5–St5 75. Posterior margin of the sternal shield not visible. Ventrianal shield with 113 116 (113–120) long, 103 104 (102–107) wide at level of ZV2 and 100 96 (85–102) wide at level of anus. JV5 47 46 (43–49).

Chelicera ( Fig. 4 ). Fixed digit 35 34 (33–35) long, with seven teeth; movable digit 30 30 long, with three teeth, pilus dentilis not observed.

Spermatheca ( Fig. 5 ). Calyx elongate and narrow throughout, 17 long.

Legs ( Fig. 6 ). With setaceous macrosetae, smooth and pointed, Sge I 28 28, Sge II 20 20, Sge III 23 23, Sti III 15 15, Sge IV 55 55 (53–56), Sti IV 45 45 and St IV 38 39 (38–40). Chaetotaxy: genu II 2–2 /0–2/0–1; genu III 1–2 / 1–2/0–1.

Male. Unknown.

Type material. Holotype female from Myrcia retorta Cambess (Myrtaceae) , São Francisco de Paula, State of Rio Grande do Sul, July 2013, D. Gonçalves coll. Four paratype females from Solanum sanctaecatharinae Dunal (Solanaceae) , collected at the same place and by the same collector, October 2013, deposited at Museu de Ciências Naturais (ZAUMCN), UNIVATES—Centro Universitário, Lajeado, Rio Grande do Sul State, Brazil.

Etymology. The species name comes from the type locality—the Rincão dos Kroeff “ kroeffis ”.

Figures

FIGURES 2 – 6. Transeius kroeffis n. sp. Female: 2. Dorsal shield, 3. Ventral surface, 4. Chelicera, 5. Spermatheca. 6. Leg IV.