Neoseiulus segnis Wainstein & Arutunjan
Creators: name: Abo-Shnaf, Reham I. A.
name: De, Gilberto J.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Neoseiulus
Neoseiulus segnis

description: Neoseiulus segnis Wainstein & Arutunjan
Amblyseius segnis Wainstein & Arutunjan, 1970: 1500; Wainstein, 1977b: 390; Beglyarov, 1981: 40. Amblyseius (Amblyseius) segnis. — Arutunjan, 1977: 38.
Neoseiulus segnis. — Moraes et al., 1986: 95; 2004: 143; Chant & McMurtry, 2003: 35; 2007: 31. Neoseiulus seminudus Basha, Yousef, Ibrahim & Mostafa, in Basha et al., 2001: 375 (new synonymy).
Female (one specimen).
Dorsal shield smooth; 312 long and 162 wide, with 17 pairs of setae. Setae j1 17, j3 22, j4 17, j5 17, j6 18, J2 20, J5 12, z2 21, z4 22, z5 18, Z1 22, Z4 30, Z5 44, s4 22, S2 26, S4 22, S5 20, r3 20, R1 20. Dorsal setae smooth, except Z5, slightly serrate. Peritreme extending forward to level of j1.
Venter. Sternal shield smooth with few lateral striae, with three pairs of setae and two pairs of lyrifissures. Distances between st1–st1 47, st2–st2 58, st3–st3 69, st4–st4 61. Genital shield smooth; distance between st5–st5 55. Ventrianal shield subpentagonal, with sparse transverse striae anteriorly to pre-anal pores and reticulate posteriorly; 105 long, 91 wide at ZV2 level and 82 wide at level of anus; with three pairs of pre-anal setae and a pair of pre-anal pores. Seta JV5 39. Ventral setae smooth. Two pairs of metapodal plates.
Spermatheca. Calyx of spermatheca saccular, 21 long; atrium distinct.
Gnathosoma. Corniculi parallel to each other; basal width of corniculus 5, distance between bases of corniculi 8. Movable cheliceral digit 31 long, with one tooth; fixed digit 30 long, with four teeth.
Legs. Macroseta sharp-tipped: St IV 54; chaetotaxy of genu II 2, 2/0, 2/0, 1; genu III 1, 2/1, 2/0, 1.
Specimens examined. One female from cucumber leaves, at Senuris, Fayoum governorate, September 2006 (coll. R.I.A. Abo-Shnaf).
Previous records from Egypt. Gharbia governorate (Basha et al., 2001).
Remarks. Neoseiulus segnis was originally described from the holotype female and four paratype females collected in Armenia. The original description was brief, but with illustrations and setal measurements. Amblyseius seminudus was originally described from the holotype female and five paratype females collected in Zifta, Gharbia governorate, Egypt. The original description was detailed, with illustrations and setal measurements.
Measurements of the specimen collected are similar to those of the original description of A. seminudus, except for S4; although it is described as 13 long in the text of the original description, the illustration shows it to be about as long as S2 (22 according to the original description). Additionally, the specimens collected fit well the description of N. segnis. The measurements of the specimen collected and of those of the original description of A. seminudus are similar to those of the original description of N. segnis, except for Z4, Z5, s4, S2, S4 and macroseta of basitarsus IV (respectively 42, 60, 33, 35, 30 and 75 in the type specimens). Those differences are attributed to the larger size of the type specimen of A. segnis (according to the original description, dorsal shield 340 long and 190 wide), and thus A. seminudus is considered a junior synonym of N. segnis.
description: Published as part of Abo-Shnaf, Reham I. A. & De, Gilberto J., 2014, Phytoseiid mites (Acari: Phytoseiidae) from Egypt, with new records, descriptions of new species, and a key to species, pp. 1-71 in Zootaxa 3865 (1) on pages 28-29, DOI: 10.11646/zootaxa.3865.1.1, http://zenodo.org/record/287144