Neoseiulus thymeleae Tixier, Kretier & Allam

Tixier, Marie-Stephane, Allam, Latifa, Douin, Martial & Kreiter, Serge, 2016, Phytoseiidae (Acari: Mesostigmata) of Morocco: new records, descriptions of five new species, re-descriptions of two species, and key for identification, Zootaxa 4067 (5), pp. 501-551: 529-531

publication ID

http://doi.org/10.11646/zootaxa.4067.5.1

publication LSID

lsid:zoobank.org:pub:902CB084-17BB-4952-B738-E6E4E989771B

persistent identifier

http://treatment.plazi.org/id/0F5E879D-2622-442C-9582-A2B7FD53F812

treatment provided by

Plazi

scientific name

Neoseiulus thymeleae Tixier, Kretier & Allam
status

new species

Neoseiulus thymeleae Tixier, Kretier & Allam   , new species

Specimens examined: Holotype female, collected in 2002, Forest of Mamora on Thymelea sp. ( Thymelaeaceae   ) and seven paratype females collected in the same locality and the same plant material. Deposited in the Montpellier SupAgro.— INRA Acarology collection. Two paratype females in the University of Meknes.

Description of the adult female (n = 10) ( Figs 12–16 View FIGURES 12 – 16 )

Diagnosis. Female dorsal shield longitudinaly striated. Setae ZV 3 and JV 3 absent. Peritremes short, extending between z 4 and s 4 and sometimes at most z 4. Sternal shield with two pairs of setae; posterior margin concave. Ventri-anal shield elongated, with three pairs of setae and small pores. Calyx of spermatheca cup-shaped. Fixed and movable digits of chelicera with two teeth. Genu II with eight setae. No macroseta on leg IV.

Dorsum ( Fig. 12 View FIGURES 12 – 16 ). Dorsal shield 356 (335–370) long and 181 (175–195) wide, longitudinaly striated, with three solenostomes (gd 2, gd 6, and gd 9), 13 pairs of poroids, 17 pairs of dorsal setae and two pairs of sub-lateral setae: j 1 14 (10–15), j 3 17 (15–18), j 4 8 (10–12), j 5 9 (8–10), j 6 10 (8–12), J 2 10 (8–12), J 5 9 (8–10), z 2 17 (15– 18), Z 1 13 (14–15), z 4 19 (15–20), z 5 10 (8–10), Z 4 26 (23–30), Z 5 36 (35–38), s 4 27 (23–30), S 2 20 (20–22), S 4 19 (18–22), S 5 18 (18–20), r 3 27 (23–27), R 1 21 (18–23). All setae smooth and shap-tipped, Z 5 thicker and serrated. Peritreme short, extending between z 4 and s 4 and sometimes at most z 4 ( Fig. 12 View FIGURES 12 – 16 ).

Venter ( Fig. 13 View FIGURES 12 – 16 ). All shields lightly reticulated. Sternal shield with two pairs of setae and two pairs of lyrifissures; two pairs of sternal setae on small metasternal plates; posterior margin concave. Distances between ST 1 – ST 3 65 (63–68), ST 2 – ST 2 59 (58–60), ST 5 –ST 5 59 (55–63). Two pairs of metapodal plates 41 (38–45) long, 4 (3–4) wide for the largest and 15 (13–15) long 2 (1–3) wide for the smallest. Ventri-anal shield with three pairs of pre-anal setae, JV 1, JV 2, and ZV 2, and presence of very small pre-anal pores with stainy aspects. Membrane surrounding ventri-anal shield with three pairs of setae ZV 1, JV 4 and JV 5, and five pairs of round to oblong poroids; ventri-anal shield 113 (110–118) long, 85 (80–90) wide at level of anterior corners, and 72 (70–83) wide at level of anus. JV 5 27 (25–28) long.

Legs ( Fig. 14 View FIGURES 12 – 16 ). Legs IV with no macrosetae. Chaetotactic formula of genu II: eight setae, 2 2 / 1, 2 /0 1; genu III: seven setae, 1 2 / 1, 2 /0 1. Length of leg I: 255 (245–260), II: 213 (210–220), III: 208 (205–215), IV: 272 (270–280).

Chelicera ( Fig. 15 View FIGURES 12 – 16 ). Fixed digit 25 long with five teeth; and movable digit 20 long with two teeth.

Spermatheca ( Fig. 16 View FIGURES 12 – 16 ). Cup-shaped and pocular ( Denmark et al., 1999), with a cervix 12 long and 2 wide, with an atrium well differentiated.

Etymology. The name “ thymeleae   ” refers to the genus of the host plant (Thymelea) on which the new species was found.

Remarks. This species is similar to Neoseiulus leucophaeus Athias-Henriot   as both lack setae JV 3 and ZV 3, both have similar shape of spermathecae, chaetotaxy of genu II and genu III, and the metapodal plates shape and lengths. Neoseiulus leucophaeus   was found in Algeria on Thymelaea hirsuta   and reported afterwards in Greece (Stathakis & Papadoulis, 2012; Stathakis et al., 2013) and Israel (Swirski & Amitai, 1997 b) on the same plant. Neoseiulus thymeleae   is also here reported from the same plant genus. However, N. thymeleae   differs from N. leucophaeus   in the length of various setae, especially Z 4 and Z 5 ( Table 3), in the absence of macrosetae on the length IV, in the chelicera dentition (two teeth on the movable digit instead of one for N. leucophaeus   ).

N. thymeleae   n. sp. Types of N. leucophaeus This   species has JV 3 and ZV 3 absent. The absence of these two setae within the sub-family Amblyseiinae   is observed in 29 other species ( Amblyseius koumacensis Schicha   , Amblyseius paucisetosus McMurtry & Moraes   , Asperoseius lagunensis Corpuz-Raros   , Afroseiulus robertsi ( Baker)   and all the species of the genera Eharius   , Paraamblyseius   and Phytoscutus   ). It is interesting to note that Neoseiulus thymeleae   shares also other similar (convergent) features with the species of the genus Eharius   . First, the species of the genus Eharius   are mainly reported from the southern part of the Mediterranean basin. Second, Eharius   species are small and strait and have the dorsum with striation as Neoseiulus thymeleae   .

INRA

Institut National de la Recherche Agronomique