Pygothrips, Hood, 1915

Mound, Laurence A. & Tree, Desley J., 2021, Tubuliferous Thysanoptera inAustralia with an enlarged tenth abdominal segment (Phlaeothripidae, Idolothripinae), including six new species, Zootaxa 4951 (1), pp. 167-181 : 176

Key to Pygothrips species from Australia

1. Maxillary stylets about one-fifth of head width apart ( Figs 20–21 ); mesopresternum well-developed and complete; pronotum unusually short in midline ( Fig. 20 ), width about 3.0 times as long as median length................................ 2

-. Maxillary stylets close together medially in head ( Fig. 22 ); mesopresternum reduced to small median or lateral sclerites; pronotum longer medially, width about 2.5 times median length................................................... 3

2. Pelta broadly triangular ( Fig 39 ); tergite IX with no short stout setae; tergite X tapering evenly, margins without any setae............................................................................................... shavianus

-. Pelta with long slender lateral wings ( Fig. 38 ); tergite IX with 3 pairs of short, stout setae; tergite X converging sharply to apex, laterally with many short setae ( Fig. 13 )............................................................... pygus

3. Antennal segment IV with 2 sense cones; abdominal segment X swollen dorsally and with convex lateral margins, bearing many short stout setae ( Figs 9, 10, 12 ).............................................................. rugicauda

-. Antennal segment IV with 4 sense cones; abdominal segment X tapering evenly with no robust lateral setae........ vicinus

Figures

FIGURES 14‒22. Heads of Acallurothrips. Neosmerinthothrips, Ozothrips and Pygothrips species. (14) A. nogutti. (15) A. erubi sp.n. (16) A.darumbali sp.n. (17) N.barrowi sp.n. (18) N.turrbali sp.n. (19) O. meanjini sp.n. (20) P. pygus. (21) P. shavianus. (22) P. rugicauda.

FIGURES 34‒39. Pelta & tergite II of Acallurothrips. Neosmerinthothrips and Pygothrips species. (34) A. darumbali sp.n. (35) A. erubi sp.n. (36) N. barrowi sp.n. (37) N. turrbali sp.n. (38) P. pygus. (39) P. shavianus.

FIGURES 1‒13. Abdominal segment X variation in shape. Acallurothrips species 1‒4: (1) darumbali sp.n; (2) nogutti; (3) yagara sp.n; (4) erubi sp.n. Neosmerithothrips species 5‒6: (5) barrowi sp.n; (6) turrbali sp.n. (7) Ozothrips meanjini sp.n. Pygothrips species 8‒10: (8) vicinus paratype; (9) rugicauda male; (10) rugicauda female. (11 a, b) Acallurothrips tergites VIII‒X to show setae SB1 and SB2 (from Okajima 1993). (12) Pygothrips rugicauda holotype tergite X dorsal and lateral views (from Hood 1915). (13) Pygothrips pygus tergites IX‒X (from Mound 1974a).