Eurytetranychini Reck, 1950

AugerK, Philippe, K, Denise Navia & MigeonK, Alain, 2023, Three new alien spider mites (Prostigmata, Tetranychidae) from south-eastern France, Acarologia 63 (3), pp. 826-833 : 826-828

Tribe Eurytetranychini Reck, 1950

Genus Aponychus Rimando, 1966

Aponychus Rimando, 1966: 105-113 . Type-species: Aponychus corpuzae Rimando

Aponychus corpuzae Rimando, 1966

Figures 1A–B , 3A–D

According to Migeon and Dorkeld (2022), this species is only recorded from Oriental and

Palearctic regions on Myrtaceae , Poaceae , Rosaceae and Rutaceae plant species. In Palearctic region, A. corpuzae was earlier recorded from China ( Wang, 1981), Japan (e.g. Gotoh et al., 2003) and Korea ( Lee, 1989). The only hitherto record in Europe is the most recent ones and concerns Italy and Slovenia ( Seljak, 2015).

Records: 1 female, 2 males, 1 nymph collected on Phyllostachys sp. ( Poaceae ), Val Rahmeh Botanical Garden, (43.7847°N 7.5113°E, alt. 45 m a.s.l.), Menton (Alpes-Maritimes), France 30-IX-2019, leg. Auger P. & Migeon A.; 4 females, 1 male collected on Semiarundinaria yashadake Makino ( Poaceae ), (43.7348°N 3.9804°E, alt. 86 m a.s.l.), Saint-Drézéry (Hérault),

France 26-XI-2017, leg. Migeon A.

Like Seljak (2015), overwintering females (female body colour was orange, males and juveniles were not found) ( Fig. 3C ) were found in November (late autumn), indicating that the species is potentially adapted and probably well established in south France.

Distinctive characters ( Fig. 1A, B ): females of this species are readily distinguished by their lateral expansions of the propodosoma, by the ventral position of outer sacrals setae (f 2), setae f 2 being half as long as setae f 1, setae sc 1, c 1, c 2, d 1, e 1 being subequal in length and setae h 1 being longer than setae f 1.

Note: new species for France and new host record on the bamboo S. yashadake .

Figures

Figure 1 A–B Aponychus corpuzae, female: A – dorsal view in habitus; B – ventral view of caudal part showing ventral position of setae f 2.; C–D Oligonychus perseae: C – female dorsal view in habitus; D – male aedeagus; scale bars A=100 µm, B=25 µm; C=100 µm, D=10 µm.

Figure 3 A–D Aponychus corpuzae: A – symptoms on bamboo leaves; B – female; C – female harbouring winter coloration; D – male. E–H Oligonychus perseae: E – symptoms under avocado leaves; F – nests along the vein, abaxial side of avocado leaf; G – details of a nest showing two females, a nymph and three eggs; H – female. I – LStigmaeopsis nanjingensis: symptoms under bamboo leaves with inhabited and abandoned nests, abaxial side of bamboo leaf; J – details of a nest showing faeces accumulated on the left side; K – female under the silk web of a nest; L – female, nymph and two eggs.