Neohydatothrips

Mound, Laurence A. & Tree, And Desley J., 2009, Identification and host-plant associations of Australian Sericothripinae (Thysanoptera, Thripidae), Zootaxa 1983, pp. 1-22 : 12

Key to Neohydatothrips from Australia

1. Body and wings largely pale, abdominal tergites II–VII with variably brown antecostal ridges and brown lateral areas, pronotal blotch light brown ............................................................................................................................... 2

-. Either the wings or the body sharply bicoloured or largely brown ( Fig. 41 , 73 ) ........................................................ 3

2. Sternites IV–VI with discal microtrichia complete across sternite, posterior margins with long microtrichia between each marginal seta ( Fig. 53 ); mouth cone extending between fore coxae; male not known; on Sida leaves ................. .................................................................................................................................................................. N. gracilipes

-. Sternites IV–VI with no discal microtrichia mesad of marginal setae S2, and no marginal microtrichia except lateral to S3 ( Fig. 40 ); mouth cone exceptionally long, extending to metasternum ( Fig. 37 ); male not known ....................... .............................................................................................................................................................. N. barrowi sp.n.

3. Forewing with strongly contrasting brown and white bands, extreme apex paler than sub-apical shaded area ( Fig. 73 ) ................................................................................................................................................................................ 4

-. Forewing not strongly banded, but sub-basal area pale before median darker area and sometimes with indistinctly paler area before dark apex .......................................................................................................................................... 6

4. Antennae 7-segmented ( Fig. 68 ); mesonotum with median and submedian pairs of setae almost in transverse straight line ( Fig. 69 ); male with large transversely oval glandular area on sternites III–VII ( Fig. 67 ); on Ipomoea aquatica leaves ...................................................................................................................................................... N. plynopygus

-. Antennae 8-segmented; mesonotum with submedian pair of setae arising well posterolateral to median pair ( Fig. 75 ); male without sternal glandular areas on III–VI.................................................................................................... 5

5. Body largely brown, pronotal anterior area yellow, median abdominal segments bicoloured ( Fig. 73 ); tibiae and femora brown with apices yellow; abdominal sternites discal area covered with microtrichia, posterior margins with long fringe ( Fig. 76 ); ocellar setae pair III on anterior margins of ocellar triangle ( Fig. 74 ); three pairs of postocular setae, median pair elongate; occipital apodeme well separated from eyes; on Tagetes ........................ N. samayunkur

-. Body largely whitish yellow ( Fig. 41 ), but dark brown on anterior part of head, meso and metanota, metasternum, tergites VII–VIII and lateral areas of tergite III; legs pale; sternites without microtrichia on disc and posterior margins; ocellar setae pair III arise between hind margins of posterior ocelli; two or three pairs of postocular setae; occipital apodeme confluent with eyes ................................................................................................... N. bellisi sp.n.

6. Ocellar setae III clearly anterolateral to ocellar triangle ( Fig. 70 ); tergites II–VI posterior margin with fringe of microtrichia medially ( Fig. 72 ); metasternum anterior margin forming a shallow broad V-shape ( Fig. 71 ) .. N. poeta

-. Ocellar setae III within ocellar triangle ( Fig. 46 ); tergites II–VI posterior margin without fringe of microtrichia medially ( Fig. 48 ); metasternum anterior margin only weakly emarginate ( Fig. 49 ); forewings with sub-apical lobe ( Fig. 51 ); on leaves of various Fabaceae .................................................................................................................... 7

7. Metanotal reticulation almost equiangular, with internal linear markings ( Figs 47, 50 ); male with no sternal glandular areas ........................................................................................................................................................... N. diana

-. Metanotal sculpture linear, with internal dot-like markings ( Figs 61, 64 ); male with transverse glandular area on sternites V–VII ( Fig. 65 ).............................................................................................................................................. 8

8. Mouth cone extending to mesosternum ( Fig. 66 ); pronotal dark area with posterior margin deeply emarginate, posteromedian discal setae arise behind blotch ( Fig. 63 ); metanotum sharply pale on posterior third ( Fig. 64 ); tergites IV–V medially with few discal microtrichia; sternites V–VII with microtrichial fields not extending mesad of S2 ... ......................................................................................................................................................... N. katherinae sp.n.

-. Mouth cone extending to fore coxae; pronotal dark area with posterior margin weakly concave, posteromedian discal setae arise on blotch ( Fig. 59 ); metanotum brown on posterior third; tergites IV–V medially with many discal microtrichia; sternites V–VII with microtrichia fields extending to setae S1( Fig. 62 ) .................................. N. haydni

Figures

FIGURES 37 – 45. Neohydatothrips barrowi & N. bellisi. (37 – 40) N. barrowi, (37) Head, ventral view; (38) Pro, meso & metanota; (39) Metasternum; (40) Sternites. (41 – 45) N. bellisi, (41) Female; (42) Meso & metanota; (43) Metasternum; (44) Head; (45) Forewing.

FIGURES 67 – 79. Neohydatothrips plynopygus, N. poeta, N. samayunkur & Sericothrips staphylinus. (67 – 69) N. plynopygus, (67) Male sternites; (68) Antenna; (69) Meso & metanota. (70 – 72) N. poeta, (70) Head; (71) Metasternum; (72) Tergites. (73 – 76) N. samayunkur, (73) Female; (74) Head & pronotum; (75) Meso & metanota; (76) Sternites. (77 – 79) S. staphylinus, (77) Meso & metanota; (78) Tergites; (79) Larva II tergal setae.

FIGURES 46 – 55. Neohydatothrips diana & N. gracilipes. (46 – 51) N. diana, (46) Head; (47) Meso & metanota; (48) Tergites; (49) Metasternum; (50) Meso & metanota; (51) Forewing apex. (52 – 55) N. gracilipes, (52) Head & pronotum (53) Sternites; (54) Larva II tergal setae; (55) Meso & metanota.

FIGURES 56 – 66. Neohydatothrips haydni & N. katherinae. (56 – 62) N. haydni, (56) Head; (57) Forewing apex; (58) Tergites; (59) Pronotum; (60) Larva II tergal setae. (61) Meso & metanota; (62) Sternites. (63 – 66) N. katherinae, (63) Pronotum; (64) Meso & metanota; (65) Male sternites; (66) Head, ventral view.