Stenchaetothrips Bagnall

Masumoto, Masami & Okajima, Shûji, 2013, Review of the genus <i> Thrips </ i> and related genera (Thysanoptera, Thripidae) from Japan, Zootaxa 3678 (1), pp. 1-65 : 7-8

publication ID

https://doi.org/ 10.11646/zootaxa.3678.1.1

publication LSID

lsid:zoobank.org:pub:DC9F35D6-C4E4-4266-86DD-75C3801703E6

persistent identifier

https://treatment.plazi.org/id/03B2C83D-FA27-FF9E-FF71-F99FFA5C9054

treatment provided by

Felipe

scientific name

Stenchaetothrips Bagnall
status

 

Stenchaetothrips Bagnall View in CoL

Wings fully developed. Ocellar setae I absent, setae II distinctly longer than setae III ( Figs. 1, 8–10 View FIGURES 1–17 ). Antennae ( Fig. 2 View FIGURES 1–17 ) 7- segmented, segment I without median dorsal apical setae, II with a MD seta below CPS, III and IV with sensoria forked, III–VI with some rows of microtrichia on both dorsal and ventral surfaces. Pronotum ( Fig. 1 View FIGURES 1–17 ) with 2 pairs of developed posteroangular setae. Mesonotum ( Fig. 40 View FIGURES 38–50 ) with median pair of setae situated far from posterior margin. Metascutum sculptured with narrow spaced longitudinal anastomosing striae except anteromedially; median pair of setae behind anterior margin. Prosternal ferna weakly connected at middle; basantra membranous, without setae. Spinula usually absent from both meso- and metasternal endofurca, sometime present on mesosternum. Fore wing ( Fig. 41 View FIGURES 38–50 ) first vein usually with long gap in setal row, second vein with many setae equally spaced; clavus usually with five veinal and one discal seta; posteromarginal fringe cilia wavy. Abdominal tergites and sternites without posteromarginal craspeda, but often with small teeth or scallops along posterior margin; tergite II with 4 lateral marginal setae; tergites VI–VIII ( Figs. 25, 26 View FIGURES 18–26 ) with paired ctenidia; tergite VIII usually with posteromarginal comb complete; tergite X with longitudinal median split almost complete; sternites III to VII with 3 pairs of posteromarginal setae, II with 2 pairs, all posteromarginal setae arising from posterior margin on II to VII except S1 setae on VII situated ahead of posterior margin; pleurotergites without discal setae. Ovipositor developed. In male, abdominal sternites III to VII ( Fig. 7 View FIGURES 1–17 ) each with a pore plate; posteromarginal teeth on tergites and sternites usually developed more than in female ( Figs. 16 View FIGURES 1–17 , 53 View FIGURES 51–61 ).

Species of this genus are specific to plants in the family Poaceae and can be distinguished from Thrips only by having ocellar setae II much longer than setae III.

Key to Stenchaetothrips species from Japan (adult female)

( mucunae View in CoL is excluded)

1 Fore wing uniformly dark in distal four-thirds............................................................... 2

- Fore wing not uniformly dark in distal four-thirds ( Fig. 41 View FIGURES 38–50 ).................................................... 6

2 Fore wing uniformly dark; abdominal tergite IX ( Fig. 15 View FIGURES 1–17 ) with posterior pair of CPS only; postocular setae I often absent ( Fig. 10 View FIGURES 1–17 ).......................................................................................... biformis View in CoL

- Fore wing not uniformly dark, basal fourth pale; abdominal tergite IX ( Fig. 31 View FIGURES 27–37 ) with both anterior and posterior pairs of CPS; postocular setae I always present ( Fig. 27 View FIGURES 27–37 )................................................................. 3

3 Postocular setae III distinctly longer than setae I ( Fig. 27 View FIGURES 27–37 )..................................................... 4

- Postocular setae III subequal to, at least not distinctly longer than, setae I ( Figs. 1 View FIGURES 1–17 , 47, 48 View FIGURES 38–50 )........................... 5

4 Abdominal tergites ( Fig. 30 View FIGURES 27–37 ) with a few small microtrichia laterally, but without scallops and microtrichia medially on posterior margin; all femora almost yellowish; metascutum ( Fig. 29 View FIGURES 27–37 ) always with paired CPS....................... minutus View in CoL

- Abdominal tergites ( Figs. 20, 21 View FIGURES 18–26 ) with distinct microtrichia laterally, and with scallops or irregular microtrichia medially on posterior margin; all femora dark; metascutum usually without paired CPS, sometimes with paired or only one CPS................................................................................................ dentatus View in CoL sp. n.

5 Body uniformly dark; mesothoracic endofurca with spinula distinct; mesonotum with paired CPS anteromedially; abdominal tergites ( Fig. 4 View FIGURES 1–17 ) with teeth directed to outside along posterior margin; pronotum distinctly sculptured ( Fig. 1 View FIGURES 1–17 ).................................................................................................... amamiensis View in CoL sp. n.

- Body bicoloured, pterothorax yellowish; mesothoracic endofurca without spinula or with spinula very weak; mesonotum usually without paired CPS anteromedially; abdominal tergites often with teeth directed to outside along posterior margin ( Fig. 52 View FIGURES 51–61 ); pronotum weakly sculptured ( Figs. 47, 48 View FIGURES 38–50 )........................................................ undatus View in CoL

6 Body uniformly yellow; fore wings uniformly pale; postocular setae III subequal to setae I ( Fig. 23 View FIGURES 18–26 ); mesonotum without CPS anteromedially; abdominal tergite VIII ( Fig. 26 View FIGURES 18–26 ) with posteromarginal comb of irregular small teeth......... langkawiensis View in CoL

- Body not uniformly yellow, often yellow with posterior segments of abdomen dark; fore wings ( Fig. 41 View FIGURES 38–50 ) variable, usually pale with shaded median third to fourth but often uniformly pale; postocular setae III distinctly longer than setae I ( Fig. 38 View FIGURES 38–50 ); mesonotum ( Fig. 40 View FIGURES 38–50 ) with paired CPS anteromedially; abdominal tergite VIII ( Fig. 43 View FIGURES 38–50 ) with posteromarginal comb long and fine.................................................................................... pleioblasti View in CoL sp. n.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Thysanoptera

Family

Thripidae

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