Mystrothrips, Priesner. These, 1949

Mound, Laurence A. & Tree, Desley J., 2018, Asia-Australia distribution patterns among species of Mystrothrips (Thysanoptera, Phlaeothripinae), with two new species, Zootaxa 4526 (3), pp. 347-357 : 348

Key to Mystrothrips species

[* based on description]

1. Prosternal basantra well-developed ( Fig. 8 ); antennal segment IV with 4 sense cones; antennal segments I–IV with one or more capitate setae.................................................................................. clavatoris

-. Prosternal basantra weak or absent ( Figs 2 , 11 ); antennal segment IV with 3 sense cones; antennal segments I–IV with apical setae all acute........................................................................................ 2

2. Antennal segment III with 3 sense cones................................................................... 3

-. Antennal segment III with 2 or 0 sense cones................................................................ 4

3. Postocellar setae with apices broadly expanded (Fig. 16)................................................. dilatus

-. Postocellar setae finely acute............................................................ dammermanni group

4. Antennal segment III with 0 sense cones; compound eye with 3 facets ( Fig. 22 ); maxillary stylets about 0.3 of head with apart; inner apex of fore tarsus with minute recurved tooth in both sexes.................................... nomadus sp.n.

-. Antennal segment III with 2 sense cones; compound eye of microptera with at least 7 facets ( Fig. 1 ); maxillary stylets about 0.5 of head width apart; female without, male with or without fore tarsal tooth..................................... 5

5. Head smooth medially, without strong reticulate sculpture ( Fig. 28 ).......................................... levis *

-. Head with well-developed reticulate sculpture............................................................... 6

6. Maxillary stylets scarcely retracted anterior to occipital ridge ( Fig. 1 ); meso and metanotal reticulate lines with many small tubercles ( Fig. 4 ); male without fore tarsal tooth................................................ brachystylis sp.n.

-. Maxillary stylets retracted almost to postocular setae; meso and metanotal reticulate sculpture lines smooth (Figs 20, 21); male with small fore tarsal tooth....................................................................... reteanum

Figures

FIGURES 1–8. Mystrothrips species. M. brachystylis 1–6: (1) head; (2) prosternites; (3) pronotum; (4) meso & metanota; (5) tergites I–IV; (6) antenna. M. clavatoris 7–8: (7) head; (8) prosternites.

FIGURES 9–15. Mystrothrips dammermanni. (9) head; (10) head & pronotum; (11) prosternites; (12) macroptera metanotum & tergites I–III; (13) microptera metanotum & tergites I–III; (14) macroptera tergites III–VI; (15) antenna.

FIGURES 22–28. Mystrothrips species. M. nomadus 22–27: (22) head; (23) pronotum & mesonotum; (24) prosternites; (25) meso & metanota & tergites I–III; (26) antenna; (27) tergites VIII, IX & tube. (28) Mystrothrips levis head of holotype.