Typhlodromus (Anthoseius) sabelisi , Ferla, Noeli Juarez, Silva, Guilherme Liberato Da & Nascimento, Joseane Moreira Do, 2012

Ferla, Noeli Juarez, Silva, Guilherme Liberato Da & Nascimento, Joseane Moreira Do, 2012, Description of a new species of Typhlodromus Scheuten (Acari: Phytoseiidae) from house dust from Rio Grande do Sul, Brazil, Zootaxa 3507, pp. 84-88: 85-87

publication ID

10.5281/zenodo.211311

publication LSID

lsid:zoobank.org:pub:427A6BB2-B4EE-4053-8916-E64D608279DA

persistent identifier

http://treatment.plazi.org/id/716C0639-FF9E-FFD9-29F3-0C66FAA4FC73

treatment provided by

Plazi

scientific name

Typhlodromus (Anthoseius) sabelisi
status

n. sp.

Typhlodromus (Anthoseius) sabelisi  n. sp.

( Figs 1–6View FIGURES 1 – 6)

Type material. Holotype female, Encantado, Rio Grande do Sul, from dust curtain in a wooden home surrounded by natural vegetation at Encantado, State of Rio Grande do Sul, Brazil, 18 May 2010, coll. J. Nascimento. Paratypes: one female, one male, same data as holotype; two females, same data as holotype except 24 October 2010. All specimens are deposited at Departamento de Entomologia e Acarologia, Escola Superior de Agricultura “Luiz de Queiroz”, Universidade de São Paulo, Piracicaba-SP, Brazil.

ADULT FEMALE (n = 4). When alive, yellowish in colour; idiosomal setal pattern from Chant & Yoshida- Shaul (1992): 12 A: 8 B/JV: ZV.

Dorsum ( Fig. 1View FIGURES 1 – 6). Dorsal shield mostly reticulate, 373 (363–383) long, 188 (178–200) wide; apparently with five pairs of lyrifissures; seta j 1 28 (25–30), j 3 35 (30–38), j 4 21 (20–23), j 5 23 (18–25), j 6 24 (23–25), J 2 28 (23–30), J 5 8, z 2 23 (18–25), z 3 31 (25–35), z 4 30 (25–35), z 5 21 (18–23), Z 4 48 (43–53), Z 5 58 (58–60), s 4 34 (30–38), s 6 36 (35–38), S 2 40 (35–43), S 4 43 (38–45), S 5 23 (18–25), r 3 33 (30–35), R 1 31 (28–35). Setae setiform and smooth. Setae r 3 and R 1 on interscutal membrane. Peritreme extending forward to level of j 3.

Venter ( Fig. 2View FIGURES 1 – 6). Sternal shield smooth, with few anterolateral striae, two pairs of setae, St 1 and St 2, and two pairs of lyrifissures; third pair of sternal setae St 3 on separate platelets; distances between St 1 -St 3 75, St 2 -St 2 63 (62–65). Genital shield with a few medial striae anterior to setae St 5; distance between St 5 -St 5 69 (65–73). Ventrianal shield smooth; nearly pentagonal, with lateral margins slightly convex, 117 (115–120) long, 105 (100–110) wide at level of ZV 2 and 83 (80–88) at level of anus; with three pairs of preanal setae. Opisthogastric cuticle with two pairs of slender metapodal shields.

Spermatheca ( Fig. 3View FIGURES 1 – 6). Calyx bell-shaped, 18 long and 11 in diameter at junction with vesicle. Cervix nodular.

Legs ( Fig. 4View FIGURES 1 – 6). No macrosetae on legs I, II and III. Macrosetae of leg IV setaceous, smooth, of the following lengths: Sg IV 34 (30–38), Sti IV 33 (30–35), St IV 54 (50–58). Chaetotaxy of genu II 2 2 / 0, 2 /0 1; genu III 1 2 / 1, 2 /0 1.

Chelicera ( Fig. 5View FIGURES 1 – 6). Fixed digit 41 (35–50) long, with three teeth, all distal to pilus dentilis; movable digit 38 (33–45) long, with one subapical tooth.

ADULT MALE. (n= 1). Colour in life, as in female. Idiosomal setal pattern: 12 A: 8 B/JV:ZV.

Dorsum. Dorsal shield mostly reticulate, 300 long, 170 wide, apparently with five pairs of lyrifissures; seta j 1 20, j 3 30, j 4 15, j 5 20, j 6 20, J 2 18, J 5 broken, z 2 20, z 3 15, z 4 20, z 5 15, Z 4 40, Z 5 48, s 4 25, s 6 28, S 2 30, S 4 25, S 5 15, r 3 20, R 1 18. All setae setiform and smooth. Setae r 3 and R 1 on dorsal shield. Peritreme extending forward to level of j 3.

Venter ( Fig. 6View FIGURES 1 – 6). Distance between setae St 1 -St 5 123.Ventrianal shield sub triangular, with slight reticulation, 120 long, 155 wide at anterior corners, with four pairs of preanal setae.

Chelicera. Fixed digit 24 long, with three teeth; movable digit 22 long, with one tooth. Spermatodactyl 30 long.

Leg. No macrosetae on legs I, II and III. Macrosetae of leg IV setaceous, lengths: Sg IV 25, Sti IV 25, St IV 40. Chaetotaxy as in female.

Etymology. The new species is named after Maurice W. Sabelis, eminent acarologist of the Netherlands.

Notes. This new species differs from Typhlodromus (Anthoseius) wonkooi Ryu & Ehara, 1992  by having St 3 on separate platelets, and most dorsal shield setae as well as macrosetae of genu, tibia and basitarsus IV longer. T. (A.) wonkooi  further differs from the new species by having four teeth on the fixed digit, and the ventrianal shield reticulate and with a constriction at level of JV 2. The cervix of the spermatheca in the new species is nodular is shape but in T. woonkoi  it is not. The new species differs from T. (A.) aestivalis Athias-Henriot, 1960  by having macrosetae on leg IV not knobbed, setae on the dorsal shield longer, and the spermatheca not conic in shape. It differs from T. (A.) foenilis Oudemans, 1930  by having dorsal setae longer, especially Z 4 and Z 5, spermatheca not campaniform and dorsal shield reticulated throughout. It differs from T. (A.) shibai Ehara, 1981  by having Z 5 longer and not serrated, the fixed digit with three teeth, macrosetae on basitarsus IV longer and not knobbed, and pores absent on the metasternal platelets, the region j 1 -j 4 highly reticulated, spermatheca without a slender and subcylindrical cervix, and without lyrifissures on the interscutal membrane in the ventrianal shield region. In the electronic polytomous key to species of the sub-genus Typhlodromus (Anthoseius) ( Hernandes et al., 2012)  of the world, T. (A.) sabelisi  resembles Typhlodromus (Anthoseius) evectus (Schuster, 1966)  , but differs by having setae j 3, S 4, r 3 and macrosetae of basitarsus IV longer, Z 4 and Z 5 not serrated, dorsal shield quite reticulated, metasternal platelets present, ventrianal shield without pores, and peritreme extending until j 3 level.

Typhlodromus (Anthoseius) sabelisi  was collected on house dust on curtains, together with high populations of Blomia tropicalis (Bronswijck et al., 1973)  ( Echimyopodidae  ) and Tarsonemus  sp. ( Tarsonemidae  ). Blomia tropicalis  is an important source of allergens in the tropics and subtropics, and Tarsonemus  is a house dust fungalfeeder ( Colloff, 2009). The presence of this predator in this hostile habitat may be associated with it feeding on B. tropicalis  and Tarsonemus  sp. This is the first record of Phytoseiidae  associated with house dust ( Colloff, 2009), and phytoseiids are most commonly found on plants ( Moraes et al., 2004). Near the windows where T. sabelisi  was collected there is a native forest from which the specimens must have originated. We searched nearby plants and did not find any specimens.During the collecting period, shrubs and flowers were not kept inside the house.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Mesostigmata

Family

Phytoseiidae

Genus

Typhlodromus

Loc

Typhlodromus (Anthoseius) sabelisi

Ferla, Noeli Juarez, Silva, Guilherme Liberato Da & Nascimento, Joseane Moreira Do 2012

2012
Loc

Blomia tropicalis

Bronswijck et al. 1973

1973