Teuchothrips gangurru, Mound & Dang & Tree, 2023

Mound, Laurence A., Dang, Lihong & Tree, Desley J., 2023, Structural diversity among the leaf-feeding thrips of Australia in the genus Teuchothrips (Thysanoptera, Phlaeothripinae) with 20 new species, Zootaxa 5383 (4), pp. 441-475 : 455-456

Teuchothrips gangurru sp.n.

( Figs 37–40 )

Female macroptera. Body and legs brown, all tarsi yellowish brown; antennal segment I and VII–VIII brown, II paler at apex, III light brown with basal third paler, IV–VI increasingly brown beyond pale base; major setae on head and pronotum shaded, on tergite IX pale; fore wings light brown on basal half but pale distally. Head about as long as wide, genae convex; vertex with reticulate sculpture; postocular setae capitate, extending beyond posterior margin of eyes; eyes longer dorsally than ventrally; maxillary stylets less than one-fifth of head width apart, retracted to eyes; mouth cone pointed ( Fig. 37 ). Antennal segment III scarcely twice as long as apical width; IV with 3 small major sense cones, VIII small and closely joined to VII ( Fig. 38 ). Pronotum transverse with 5 pairs of rather short, capitate major setae; surface with extensive reticulate sculpture on anterior and posterior thirds. Fore tarsal tooth scarcely one-third as long as width of tarsus, fore femora not enlarged. Fore wing with no duplicated cilia; sub-basal setae short and capitate, S2 slightly closer to S3 than to S1. Mesonotum transversely reticulate, lateral setal pair small and capitate. Metanotum evenly reticulate, major setal pair slender ( Fig. 40 ). Mesopresternum divided into 2 triangles slightly extending medially, metathoracic sternopleural sutures long. Pelta triangular with apex transverse and base weakly flared; tergite IX setae S1 and S2 long, apices capitate; tube lateral margins straight narrowed distally.

Measurements (holotype female in microns). Body length 1910. Head, length 175; maximum width 190. Pronotum, length 140; width 270; epimeral setae 60. Fore wing, length 730; sub-basal setae S1 60, S2 60, S3 70. Tergite VIII posterolateral setae 40; tergite IX setae S1 110, S2 90; tube, length 150, basal width 80; anal setae, length 135. Antennal segments I–VIII length (width): 35 (30), 45 (30), 55 (25), 55 (30), 55 (30), 50 (30), 45 (25), 25 (15).

Male macroptera. Similar to female in colour and sculpture, fore tarsal tooth slightly larger; sternite VIII fully occupied by pore plate ( Fig. 39 ); tergite IX setae S2 similar to S1 setae.

Measurements (paratype male in microns). Body length 1600. Head, length 165; width 160. Pronotum, length 230; width 120. Tergite IX setae S1 85, S2 75. Tube, length 110, basal width 65; anal setae, length 125.

Specimens studied. Holotype female, South Australia, Kangaroo Island, Cape Linois , from Melaleuca , 4.x.2007 ( LAM 5103 ), in ANIC.

Paratypes: 2 females, 1 male taken with holotype.

Comments. Taken only on Kangaroo Island , the females of this new species are closely similar to those of the type species of the genus, another southern Australian species. However, the male pore plate on sternite VIII and the setae on tergite IX are different from that widespread species .

Figures

FIGURES 37–43. Teuchothrips of Australia. T. gangarru 37–40: (37) head & pronotum; (38) antenna; (39) male sternite VIII; (40) metanotum & pelta. T. garrunggam 41–43: (41) head & pronotum; (42) antenna; (43) fore wing sub-basal setae.