Ethirothrips

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Taxonavigation

Ordo: Thysanoptera
Familia: Phlaeothripidae

Name

Ethirothrips Karny – Wikispecies link – Pensoft Profile

Remarks

This genus currently comprises 37 species, of which eight are recorded from China: Ethirothrips brevis, Ethirothrips indicus, Ethirothrips obscurus, Ethirothrips chui and Ethirothrips virgulae from Taiwan, Ethirothrips longisetis and Ethirothrips vitreipennis from Hainan, and Ethirothrips stenomelas from Guangdong and Hainan. However, Ethirothrips virgulae is here newly recorded from mainland China at Guangxi. In this study, type-specimens of two species of Chen (Taiwan Agricultural Research Institute, Taichung) were checked, but unfortunately they are so poor that most characters could not be studied.

Diagnosis

Head usually longer than width across eyes; eyes small, equally developed ventrally and dorsally; postocular setae well-developed; stylets long, V-shaped or sub-parallel; antennae 8-segmented, segment III with 2 sensoria, IV 4; pronotal major setae pointed or blunt, notopleural sutures complete; basantra present; mesopraesternum boat-shaped; metathoracic sternopleural sutures absent; wings, if present, with numerous duplicated cilia; fore tarsal tooth present in male; pelta broad, with two broad lateral lobes; abdominal tergites II–VII each with 1 pair of sigmoid wing-retaining setae in macroptera; tube surface smooth, without prominent setae; anal setae shorter than tube.

Key to Ethirothrips species from China

Key to Ethirothrips species from China — L. Dang , G. Qiao

1		Antennal segment IV with five sensoria    Ethirothrips stenomelas
–		Antennal segment IV with four sensoria    2
2		Postocellar setae elongate, longer than diameter of posterior ocelli (Figs 7, 8)    3
–		Postocellar setae reduced, much shorter than diameter of posterior ocelli (Fig. 9)    4
3		Antennal segments IV–VIII uniformly brown, at least IV darker than III; abdominal segment IX with posteromarginal setae shorter than tube (Fig. 11)    Ethirothrips indicus
–		Antennal segment IV as yellow as III, V–VIII brown; abdominal segment IX with posteromarginal setae longer than tube (Fig. 12)    Ethirothrips obscurus
4		Major setae blunt at apex    5
–		Major setae acute at apex    6
5		Metanotum without campaniform sensilla    Ethirothrips chui
–		Metanotum with pair of campaniform sensilla (Fig. 10)    Ethirothrips brevis
6		Major setae well developed, postocular setae about 230 microns    Ethirothrips longisetis*
–		Major setae relatively shorter, postocular setae about 100 microns    7
7		Body uniformly brown to dark brown    Ethirothrips virgulae
–		Body bicolored, largely yellow except brown tube    Ethirothrips vitreipennis

Taxon Treatment

• Dang, L; Qiao, G; 2013: Review of the spore-feeding Idolothripinae from China (Thysanoptera, Phlaeothripidae) ZooKeys, 345: 1-28. doi

Images

Figures 7–12. Ethirothrips spp. 7–9 Head, pronotum & foreleg: 7 Ethirothrips indicus 8 Ethirothrips obscurus 9 Ethirothrips vitreipennis Mesonotum & metanotum: 10 Ethirothrips brevis 11–12 Female abdominal tergites IX–X: 11 Ethirothrips indicus 12 Ethirothrips obscurus.