Iridothrips mariae Pelikan, 1961

Masumoto, Masami & Okajima, Shûji, 2020, The genus Parabaliothrips Priesner (Thysanoptera, Thripidae) with three new species from Japan and Taiwan, and two new records of related genera from Japan, Zootaxa 4838 (4), pp. 566-580 : 578

Iridothrips mariae Pelikan

( Figs 2, 3 )

Iridothrips mariae Pelikan, 1961: 64 .

Previously this genus included two semiaquatic European species, iridis and mariae , which are associated with Typha and Iris , respectively, but the former species is distributed in North America ( Stannard, 1968; zur Strassen, 2003; Jenser, 2013). Recently, however, Wang et al. (2019) revised this genus based on phylogenetic analysis of Frankliniella genus-group using morphological data. They recognized five Palaearctic species in Iridothrips and provided an identification key to these species. Their analysis suggested this genus is sister-group to Frankliniella supported by four homoplastic characters. In Europe, mariae breeds on Typha , but in Japan it breeds on the basal stems of Colocasia and Eichhornia as well as on Typha . Japanese individuals usually have pore plate-like structures on female sternites III–VI but one female from Typha of Honshu has no such structure, as in European females.

Specimens examined. JAPAN: Ryukyus: Okinawa-ken, Okinawa-hontou Is., Ginowan-shi, Ohyama: 6 females & 3 males on stem of Colocasia esculenta [ Araceae ], 17.x.2004, K. Minoura; 52 females & 4 males & 3 second instar larvae on stem of Colocasia esculenta , 23.ii.2007, M. Masumoto; 21 females & 7 males on stem of Colocasia esculenta , 30.x.2009, M. Masumoto; 20 females & 7 males on stem of Typha sp. [ Typhaceae ], 21.ix.2014, K. Minoua; 3 females on Eichhornia crassipes [ Pontederiaceae ], 25.ix.2014, K. Minoura. Honshu: Chiba-ken, Chibashi, Konakadai-machi, 2 females & 1 male on bottom part of Typha latifolia , 26.vi.2011, R. Igarashi. Ibaraki-ken, Hokota-shi, Touma, 1 male on Typha latifolia , 26.viii.2013, M. Masumoto. All are deposited in TUA. POLAND: Warsaw, Ursynov, 4 females on Typha sp., 4.x.1985, Irena Zawirska (NHM).

Figures

FIGURES 1–8. Frankliniella genus-group. (1) Firmothrips firmus. Iridothrips mariae 2–3: (2) Female; (3) Male. Parabaliothrips betulaceae n. sp. 4–5: (4) Female; (5) Male. (6) P. brevisetosus n. sp. P. robustus n. sp. 7–8: (7) Female; (8) Male.