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 S 2, and no marginal microtrichia except lateral to S 3 ( 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 S 2............................................................................................................................................................ 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 S 1 ( Fig. 62).................................. N. haydni