Drypetothrips korykis, Mound & Wells, 2020

Mound, Laurence A. & Wells, Alice, 2020, Two new monobasic thrips genera for a gall-inducing species and its kleptoparasite (Thysanoptera, Phlaeothripinae), Zootaxa 4759 (3), pp. 421-426 : 422-424

Drypetothrips korykis sp.n.

( Figs 2–7 )

Female macroptera. With generic character states as indicated above. Body brown, tube darkest; tarsi and apices of tibiae yellow; antennae brown with base of III and apex of II paler; fore wing distal half uniformly shaded. Head sculpture reticulate on posterior third, irregular on anterior third ( Fig. 2 ); outer po setae slightly longer than inner pair. Pronotum with median longitudinal apodeme, sculpture weak and irregular, but reticulate anterolaterally and at posterior margin. Mesonotal lateral setae weakly capitate, metanotal median setae finely pointed. Pelta and tergite II reticulate, remaining tergites with reticulation weak on median third; paired median campaniform sensilla large but irregular, sometimes close together but sometimes absent; tergites II–VI with posteroangular setae shorter than median length of tergite, on VIII much longer than tergite; tube robust, constricted at anal setae. Sternites with at least 12 small fine discal setae; posteromarginal setae S1 shorter than sternite length, arising submarginally.

Measurements (holotype female, in microns). Body length 2150. Head, length 210; width 170; po setae 65, 75. Pronotum, length 180; width 240; setae, am 50, aa 35, ml 50, epim 75, pa 60. Fore wing, length 900; width 80; sub-basal setae 50, 45, 45. Tergite IX setae S1 165; S2 165; S3 200. Tube, length 240. Antennal segments III–VIII length 55, 45, 45, 50, 45, 25.

Female microptera. Closely similar in colour and structure to macroptera with well-developed ocelli; fore wing lobe about half as long as pterothorax width, with three long capitate setae.

Measurements (paratype female, in microns). Body length 2010. Head, length 200; po setae 60, 75. Pronotum, length 185; width 235; setae, am 50, aa 30, ml 55, epim 80, pa 60. Fore wing lobe 170. Tergite IX setae S1 160; S2 135; S3 200. Tube, length 215. Antennal segments III–VIII length 50, 45, 45, 50, 45, 25.

Male microptera. Similar in colour and structure to female; tergite IX setae S2 variable in length.

Specimens studied. Holotype female macroptera, New South Wales, 20km south of Taree, Black Head , from marginal leaf-roll gall on Drypetes deplanchei , 14.iv.2002 (LAM 4147).

Paratypes (micropterae except where indicated): New South Wales, taken with holotype 2 female macropterae, 12 females; 25km north of Taree , 13 females, 2 males with larvae from marginal leaf-roll galls on Drypetes deplanchei , 27.xii.2006 . Queensland, Brisbane, Mt Nebo , 9 female macropterae, 2 females, 7 males from marginal leaf-roll galls on Drypetes deplanchei , 9.vii.2002 .

Comments. This species is remarkable for the lack of structural differences between macropterae and micropterae, and also between males and females. The largest individuals of both sexes differ from the smallest in having the fore femora rather thicker and the fore tarsal tooth slightly larger, but no allometric differences were observed.

Figures

FIGURES 1–7. Drypetothrips korykis gen et sp. n. and galls. (1) Drypetes deplanchei leaf margin galls; (2) holotype head and pronotum; (3) meso and metanotum; (4) antenna; (5) prosternites; (6) tergite IX and tube; (7) pelta and tergites II–IV.