Holoengythrips padthawayi, Mound & Tree, 2014

Mound, Laurence A. & Tree, Desley J., 2014, Fungus-feeding phlaeothripine Thysanoptera in the genus Holothrips from Australia and New Caledonia, with a structurally similar new genus, Holoengythrips, Zootaxa 3860 (2), pp. 125-148 : 142

Holoengythrips padthawayi sp. n.

( Figs 40 , 62 , 68 )

Male macroptera: Body and legs brown, tarsi yellow; antennal segment I and base of II brown, III–V largely yellow with apices weakly shaded, VI–VIII light brown; fore wings pale; major setae all pale. Head longer than wide ( Fig. 40 ), dorsal surface weakly sculptured, ocelli well-developed, cheek setae weak, postocular setae weakly capitate and almost as long as eye; mouth cone not extending to ferna. Antennal segment III with 1 sensorium, IV with 3 sensoria; apex of V asymmetric, VIII slightly narrower at base than VII at apex. Pronotum transverse, weakly sculptured at anterior and posterior margins; major setae small and weakly capitate but am setae finely acute. Fore tarsal tooth large, almost as long as tarsal width; fore tibia with no tubercle. Mesonotal lateral small and capitate; metanotum weakly reticulate, with one pair of fine major setae. Fore wing parallel-sided, with about 4 duplicated cilia; sub-basal setae short. Prosternal ferna not meeting medially; mesopresternum of three small sclerites, anterior margin of mesoeusternum transverse ( Fig. 62 ); metathoracic sternopleural sutures long. Pelta triangular, reticulate, tergites II–VII with two pairs of wing-retaining setae; major setae on II–VIII capitate; tergite IX setae S1, S2, and S3 all capitate. Anal setae shorter than tube. Sternites with one row of about 10 small discal setae, IV–VI with faintly indicated areas of specialized reticulation, VIII with large pore plate that is narrowed medially ( Fig. 68 ).

Measurements (holotype male in microns). Body length 2300. Head, length 300; width behind eyes 200; postocular setae 70. Pronotum, length 150; median width 350; major setae: am 10, aa 30, ml 30, epim 45, pa 35. Tergite IX setae: S1 125, iS 35, S2 75, S3 125. Tube length 180. Antennal segments III–VIII length 75, 70, 60, 55, 50, 30.

Material studied. Holotype male macroptera, South Australia, Desert Camp Park , [20km north of Padthaway], from dead wood, 3.x.2013 ( DJT 1677 ).

Comments. The head of the only known specimen is slightly crushed ( Fig. 40 ), and uncrushed would probably be more like that of kathyae ( Fig. 35 ). The pore plate on sternite VIII is of an unusual shape ( Fig. 68 ), and the apices of all three pairs of major setae on tergite IX are strongly capitate ( Fig. 72 ), in contrast to all other members of the genus.

Figures

FIGURES 34–42. Holoengythrips from Australia. Heads: (34) barrinei sp.n.; (35) kathyae sp.n.; (36) maynardae sp.n.; (37) monteithi sp.n.; (38) namadgi sp.n.; (39) tallagandai sp.n.; (40) padthawayi sp.n.; (41) tarsalis sp.n.; (42) turcoae sp.n.

FIGURES 55–62. Holoengythrips from Australia. Pterothoracic sternites: (55) kathyae sp.n.; (56) maynardae sp.n., male; (57) maynardae sp.n., female; (58) tallagandai sp.n., male; (59) tallagandai sp.n., female; (60) namadgi sp.n.; (61) barrinei sp.n.; (62) padthawayi sp.n.

FIGURES 63–72. Holoengythrips from Australia. Male sternite VIII pore plate 63–70: (63) barrinei sp.n.; (64) kathyae sp.n.; (65) maynardae sp.n.; (66) monteithi sp.n.; (67) namadgi sp.n.; (68) padthawayi sp.n.; (69) tallagandai sp.n.; (70) turcoae sp.n. Tergite IX and tube, 71–72: (71) maynardae sp.n., female; (72) padthawayi sp.n., male.