Astrothrips, Karny, 1921

Li, Yajin, Mound, Laurence A., Xie, Yanlan & Zhang, Hongrui, 2021, Species of Astrothrips from China, with one new species and a list of plant associations (Thysanoptera, Panchaetothripinae), Zootaxa 4920 (2), pp. 267-277 : 269-270

Key to species of Astrothrips from China

1. Antennae 8-segmented ( Fig. 26 ); metanotum with triangle of reticulation weakly defined ( Fig. 17 )..................... 2

-. Antennae with 5 to 7 segments ( Figs 24–25 ); metanotum triangle of reticulation sharply defined ( Figs 20, 22 )............ 3

2. Antennal segments III–IV with sense cone forked...................................................... strasseni

-. Antennal segments III–IV with sense cone simple..................................................... asiaticus

3. Pronotum with a strong transverse submarginal apodeme extending fully across posterior margin ( Fig. 15 ); sternites of male with a minute circular pore plate ( Fig. 4 )...................................................... glanduculus sp.n.

-. Pronotum without such a long transverse submarginal ridge ( Figs 9–10, 13 ); sternites of male with U-shaped pore plate or with pore plate absent ( Fig. 5 )............................................................................... 4

4. Abdominal tergite X of female with the tips of apical setae expanded ( Fig. 7 )........................... chisinliaoensis

-. Abdominal tergite X of female with tips of apical setae pointed ( Fig. 6 ).......................................... 5

5. Mesonotum anterior third fully divided with no sculptured reticulate connection ( Fig. 21 ) [male with no sternal pore plates]............................................................................................... tumiceps

-. Mesonotum anterior third with reticulate sculpture and U-shaped transverse ridge joining the pair of lateral areas ( Figs 17, 18, 20, 22 ).............................................................................................. 6

6. Pronotum with weak submarginal ridge across little more than median third of posterior margin ( Fig. 10 ); antennae 6-segmented; sternites IV–VII of male each with U-shaped pore plate......................................... globiceps

-. Pronotum posterior margin without a transverse submarginal ridge ( Fig. 9 ); antennae 5–7 segmented; sternites of male without any pore plate.................................................................................. aucubae

Figures

FIGURES 17–26. Astrothrips species. 17–18, 20–22. Meso-metanotum of Astrothrips species (17) strasseni; (18) chisinliaoensis; (19) Antennae of aucubae; (20) aucubae; (21) tumiceps; (22) glanduculus; (23) Fore wing of glanduculus; 24–26 Antennae of Astrothrips species (24) glanduculus; (25) chisinliaoensis; (26) strasseni.

FIGURES 9–16. Head and pronotum of Astrothrips species. (9) aucubae; (10) globiceps; (11) chisinliaoensis (12) strasseni; (13) tumiceps; (14) Pronotum of glanduculus (variant); (15) glanduculus; (16) asiaticus.

FIGURES 1–8. Astrothrips species. 1–4 A. glanduculus sp.n (1) Female; (2) Male; (3) Abdominal tergites VII–X of male; (4) Abdominal sternites V–VII of male. 5–6 globiceps. (5) Abdominal sternites IV–VII of male; (6) Abdominal tergites VIII–X of female; (7) Abdominal tergites VIII–X of chisinliaoensis; (8) Abdominal tergites VI–VII of glanduculus.