Tenuipalpus isabelae, Mesa, N. C., De Moraes, G. J. & Ochoa, R., 2006

Mesa, N. C., De Moraes, G. J. & Ochoa, R., 2006, Two new species of Tenuipalpus (Acari: Tenuipalpidae) from southeastern Brazil, Zootaxa 1138, pp. 45-51 : 45-48

Tenuipalpus isabelae n. sp.

( Figure 1 A–D)

Diagnosis: This species belongs to the keiensis subgroup of the proteae group, established by Meyer (1993), whose adult females are characterized by having 6 pairs of dorsolateral opisthosomal setae, one pair of Ic3 and 2 pairs of Ic4. Females of this new species resemble T. barticanus De Leon (1965) , but differ by having 2 setae each on genua I and trochanter III (one seta each in T. barticanus ), and prodorsal seta sc2 about 4 times longer than in T. barticanus .

Pará Veiga & Flechtmann (1980) Adult female: (Specimens measured: 5).

Subcapitulum (rostrum) extending to base of femur I. Palpus ( Fig. 1 C) with three segments; proximal segment without setae, intermediate segment with a dorsodistal pectinate seta; distal segment with one eupathidium 8 (7–9).

Idiosoma ( Fig. 1 A) 273 (260–282) long, 196 (187–200) wide. Rostral shield deeply cleft, with pointed lobes. Propodosoma with anterior margin irregular; dorsocentral region delimitated by two longitudinal grooves, with transversal striation; lateral regions with diagonal striation. Setae v2 7, sc1 8, smooth; sc2 43 (40–50), thick and serrate. Propodosomal pores absent.

Dorsal surface of hysterosoma with 2 curved, roughly longitudinal grooves; region between grooves, anterior to opisthosomal pores, with transverse striation; remaining surface primarily smooth. Setae c1 5 (4–8), c3 16(14–20), d3 8 (6–9), f2 27 (25–30), f3 25 (23–28), h1 19 (18–22), all serrate; h2 100 (90–110) flagelliform, serrate proximally. Setae d1, e1, e3 absent. Ventral surface ( Fig. 1 D) with fine longitudinal striae between Ic1 and Ic2 and between Ic3 and Ic4. Genitoventral plate lightly sclerotized, with fine transversal striae. Setae Ic3a 8 (7–9), Ic4a 62 (50–80) and Ic4b 55 (50–60), ag 19 (15–23); g1 and g2 18 (15–23), on a transversal line.

Chaetotaxy of legs I to IV: coxa 2/2/1/1, trochanter 1/1/2/1, femur 4/4/2/1, genu 2/2/0/ 0, tibia 5/5/3/3; tarsi I and II each with a serrate seta overlying distal solenidium.

Adult male: unknown.

Deutonymph: Idiosoma (Fig. B) 210 long, 185 wide. Setae v2 5, sc1 7, c1 2, d3 6 smooth, sc2 40, c3 22, f2 33, f3 27, h1 19, all serrate; h2 50, flagelliform, serrate proximally. Dorsal seta e3 absent.

Type material: Holotype female, 3 paratype females and 1 paratype deutonymph, ex Actinostemon sp. ( Euphorbiaceae ), VIII­2002, N.C. Mesa, Reserva Ecológica de Ibicatu, Piracicaba–SP, Brazil (22o46’43”S and 47o49’32”W). Deposited in the reference collection of Departamento de Entomologia, Fitopatologia e Zoologia Agrícola, Setor Zoologia, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba–SP, Brazil. One paratype female, same collection data, deposited in the National Museum of Natural History, Smithsonian Institution, Washington, DC, USA.

Etymology: This species is named in honor Isabel Cristina Zuluaga Mesa , daughter of the senior author.

Figures

FIGURE 1. Tenuipalpus isabelae: A. Female dorsal shield; B. Deutonymph; C. Palpus; D. Female ventral surface.