Ingaseius silvaticus, Barbosa, Marina Ferraz De Camargo, Rocha, Matheus Dos Santos & Ferla, Noeli Juarez, 2014

Barbosa, Marina Ferraz De Camargo, Rocha, Matheus Dos Santos & Ferla, Noeli Juarez, 2014, A new genus and species of phytoseiid mite (Acari: Phytoseiidae) from the Brazilian Atlantic Forest, Zootaxa 3795 (1), pp. 91-95 : 92-94

Ingaseius silvaticus n. sp.

Diagnosis. Females and males are distinguished from other phytoseiid species by the combination of characters given in the description of the genus.

Female. Figures 1–7 (15 specimens measured).

Dorsum. Dorsal shield ( Fig 1 ) strongly convex (as demonstrated by breakage of mounted specimens), mostly smooth, with sparse antero-lateral striae, 16 pairs of lyrifissures and four pairs of pores, 316 (300–337) long and 186 (185–195) wide. Setae j1 14 (12–16), j3 17 (15–20), j4 4 (3–5), j5 3, j6 3 (3–5), J5 4 (4–5), z2 58 (52–60), z4 12 (9–14), z5 4 (4–5), Z4 53 (45–56), Z5 46 (42–50), s4 50 (42–56), S2 39 (36–45), S4 10 (9–11), S5 7 (7–8), r3 34 (31–37), R1 10 (10–12). Setae sharp-tipped and smooth, except j1, z2, Z4, Z5, s4, S2 and r3, serrate.

Venter ( Fig. 2 ). Base of tritosternum 11(10–11) long and 9 (9–10) wide proximally; laciniae 56 (52–57), separate for about 50% of their total length, pilose. Sternal shield smooth, with three pairs of setae and two pairs of lyrifissures, posteriorly eroded, so that setae St3 inserted on narrow posterolateral remnants of the shield; St4 on metasternal shield; distances between St1-St3 52 (50–55), St2-St2 52 (50–55). Genital shield smooth; distance between St5-St5 45 (41–47). Ventrianal shield reduced, approximately ovoid, smooth, 73 (64–77) long, 48 (42–52) wide at widest level, with a pair of pre-anal setae (Jv2) and a pair of small, rounded pre-anal pores, each well posteriad of and slightly laterad of Jv2 of the same side. Five pairs of opisthogastric setae on unsclerotised cuticle (Jv1, Jv4, Jv5, Zv1 and Zv2). Seta Jv5 slightly shorter to slightly longer than other opisthogastric setae. Ventral setae smooth. With a single pair of metapodal plates, each slightly expanded anterolaterally, probably because of the fusion of the two usual platelets on each side. Peritremal shield fused anteriorly to dorsal shield, almost reaching level of j1.

Gnathosoma . Deutosternal groove 4 (3–4) wide ( Fig 4 ). Movable cheliceral digit 20 (20–21) long, with two teeth; fixed cheliceral digit 21 (21–22) long, with one distal teeth and a pilus dentilis ( Fig. 3 ).

Spermatheca. ( Fig. 7 ). Calyx tubular and enlarged distally, 25 long; atrium c-shaped, bifurcate at junction with major duct.

Legs. Macrosetae absent. Chaetotaxy: coxa I: 2; trochanter I: 1, 0/1, 0/2, 1; femur I: 2, 3/1, 2/2, 2; genu I: 2, 2/ 1, 2/1, 2; tibia I: 1, 2/1, 2/2, 2; coxa II: 2; trochanter II: 1, 0/1, 0/2, 1; fêmur II: 1, 3/1, 2/1, 1; genu II: 2, 2/0, 2/1, 1; tibia II: 1, 1/1, 2/1, 1; coxa III: 2; trochanter III: 1, 1/0, 2/1, 0; genu III: 1, 2/0, 2/1, 1; tibia III: 1, 1/0, 2/1, 1; coxa IV: 2; trochanter III: 1, 1/0, 2/1, 0; genu IV: 1, 2/0, 2/1, 1; tíbia IV: 1, 1/0, 2/1, 1 ( Fig. 6 ).

Male. Figures 8–10 (5 specimens measured)

Dorsum. ( Fig. 8 ). Dorsal shield pattern similar to female, 275 (269–280) long and 147 (145–150) wide. Setae j1 9 (9–10), j3 13 (11–18), j4 4 (3–4), j5 3, j6 5 (4–7), J5 3, z2 29 (26–32), z4 7 (5–11), z5 4 (4–5), Z4 18 (16–21), Z5 20 (20–21), s4 25 (24–26), S2 16 (15–17), S4 9 (7–9), S5 4 (3–4), r3 19 (18–21), R1 11 (10–12). All dorsal setae smooth.

Venter. ( Fig. 9 ) Sternogenital shield mostly smooth, with few posterolateral striae. Ventrianal shield subtriangular, reticulate, 95 (90–98) long and 119 (115–125) wide at anterior corners, with three pairs of pre-anal setae (Jv1, Jv2 and Zv2), three pairs of lyrifissures and a pair of small, rounded pores. Seta Jv5 smooth, about as long as or slightly shorter than pre-anal setae. Peritreme r eaching level of z2.

Chelicerae. ( Fig. 10 ) Movable cheliceral digit 14 (13–14) long, with one teeth; fixed cheliceral digit 15 (14–15) long, with one teeth; pilus dentilis not visible. Spermatodactyl L-shaped, with shaft 9 (9–10) long, with toe straight, 8 (7–8 long), heel 4 (3–4) wide.

Leg. Macrosetae absent. Chaetotaxy as in female.

Etymology. The name silvaticus is a Latin word for “of woods”, referring to the presence of this species in different spots of the Brazilian Atlantic Forest.

Type material. Holotype female, two paratypes female and one paratype male from Inga sp., Jundiaí, State of São Paulo, 07 September 2008, J.C. de Souza coll.; one paratype female and one paratype male from Inga sp., Jundiaí, State of São Paulo, 28 August 2008, P.R. Demite coll.; six paratype females and one paratype male from Inga edulis, Pariquera-Açu , State of São Paulo, 9 October 2001, L.V.F. Silva coll., deposited at Museu de Zoologia Luiz de Queiroz of the Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Piracicaba, State of São Paulo, Brazil. Three paratype female and one paratype male from from Inga sp., Jundiaí, State of São Paulo, 07 September 2008, J.C. de Souza coll.; two paratype females and one paratype male from I. edulis, Pariquera-Açu , State of São Paulo, 9 October 2001, L.V.F. Silva coll.; deposited at the Acari Collection of the Departamento de Zoologia e Botânica (DZSJRP-Acari), Universidade Estadual Paulista ( UNESP), Campus de São José do Rio Preto, State of São Paulo, Brazil.

Figures

FIGURES 1 – 7. Ingaseius silvaticus n. sp., female. 1. Dorsal view of idiosoma; 2. Ventral view of idiosoma; 3. Chelicera; 4. Hipostome; 5. Tritosternum; 6. Leg IV; 7. Spermatheca.

FIGURES 8 – 10. Ingaseius silvaticus n. sp., male. 8. Dorsal view of idiosoma; 9. Ventral view of idiosoma; 10. Chelicera.