Akarethrips, Dang & Mound & Qiao, 2014

Dang, Li-Hong, Mound, Laurence A. & Qiao, Ge-Xia, 2014, Conspectus of the Phlaeothripinae genera from China and Southeast Asia (Thysanoptera, Phlaeothripidae), Zootaxa 3807 (1), pp. 1-82 : 17-18

Akarethrips gen.n.

( Figs 6–11 )

Small-sized Phlaeothripinae with unusually short maxillary stylets; body surface weakly sculptured; head longer than wide, cheeks incut just behind eyes ( Fig. 6 ); eyes equally developed on dorsal and ventral surfaces, all ommatidia of equal size; postocular setae well-developed; stylets wide apart, V-shaped, not retracted anterior to postoccipital ridge ( Figs 6, 8 ); antennae 8-segmented, VIII fused to VII but with weakly complete suture ( Fig. 11 ), III with 3 slender sensoria, IV with 4, V and VI each with 2 similar sensoria; pronotum with 5 pairs of capitate setae, notopleural sutures complete; basantra present in male, weak in female; mesopresternum divided into three sclerites, median sclerite with pair of setae ( Fig. 8 ); sternopleural sutures absent; fore tarsal tooth present in both sexes; fore wings constricted medially, with duplicated cilia ( Fig. 7 ); pelta slightly hat-shaped ( Fig. 9 ); tergites II–VII with 2 pairs of wing-retaining setae; tergite IX with setae S1 and S2 of female expanded at apex; tube with straight sides, shorter than head; male tergite IX setae S2 short and stout ( Fig. 10 ), sternite VIII without pore plate. Type species: Akarethrips iotus sp.n.

Comments. This new genus shares character states of the fore wing and prosternum with genera of the Haplothripini . Amongst the genera of that tribe in which species have three sensoria on the third segment ( Mound & Minaei 2007; Minaei et al. 2007) it is distinguished by the exceptionally short maxillary stylets that are scarcely retracted into the head.

Figures

FIGURES 1–10. Phlaeothripinae genera. (1) Ablemothrips maxillatus, antenna, head, pronotum & fore leg; (2) Acanthothrips nodicornis, head & fore leg; (3) Agynaikothrips sp., head; (4) Adraneothrips coloratus, head & pronotum; (5) Androthrips ramachandrai, head, pronotum & for legs. Akarethrips iotus 6–10: (6) Head, pronotum & fore legs; (7) Forewing; (8) Basantra & mesopresternum; (9) Metanotum & Pelta; (10) Tergites VIII–IX.

FIGURES 11–20. Phlaeothripinae genera. Antennae 11–18: (11) Akarethrips iotus; (12) Ecacanthothrips tibialis; (13) Eurhynchothrips messuicola; (14) Eugynothrips sumatranus; (15) Heliothripoides boltoni; (16) Isotrichothrips longirostris; (17) Litotetothrips sp.; (18) Phenicothrips daetymon. Head & pronotum 19–20: (19) Asianthrips orientalis; (20) Apelaunothrips aokii.