Hoplandrothrips oreillyi, Mound, Laurence A. & Tree, Desley J., 2013

Mound, Laurence A. & Tree, Desley J., 2013, Fungus-feeding thrips from Australia in the worldwide genus Hoplandrothrips (Thysanoptera, Phlaeothripinae), Zootaxa 3700 (3), pp. 476-494 : 490-491

Hoplandrothrips leai (Karny)

Phloeothrips leai Karny, 1925: 37

Based on two specimens from Norfolk Island, the original description of this species does not include sufficient detail to place it in the key above. However, the illustration provided by Karny indicates that the head is only 1.1 times as long as wide, with cheeks swollen behind the eyes and bearing many small setae, and the postocular setae shorter than the width of an eye. The description states that it is a dark brown species with dark mid and hind tibiae that are narrowly yellow at base and apex with yellow tarsi, three sensoria on antennal segment III, and long pronotal anteroangular setae. In this combination of characters leai apparently differs from all of the species considered here. The original two specimens have not been found in the South Australian Museum, nor amongst the slide collections of Karny in the Senckenberg Museum, Frankfurt. One female from New Caledonia that closely resembles the description apart from dark tibiae and tarsi is in the Australian National Insect Collection.

Hoplandrothrips oreillyi sp.n. ( Fig. 23 )

Male macroptera. Body, legs and antennae brown, except yellow tarsi, antennal segment III and base of IV–V; major setae on head and pronotum dark, on abdomen pale; fore wings pale at base, with longitudinal light brown mark medially, weakly shaded distally.

Head with weak reticulation only near posterior margin and laterally, ventrally with 3 pairs of longer setae; cheeks convex; maxillary stylets retracted to postocular setae, close together medially; postocular setae capitate and as long as eye length ( Fig. 23 ); mouth cone short and pointed. Antennae 8-segmented, long and slender; III with 3 sensoria, IV with 4 sensoria; VII with weak pedicel, VIII slightly narrowed to base.

Pronotum with weak sculpture near posterior margin, median longitudinal apodem present; all 5 major setae long and capitate; basantra absent, chitinous islets not large; mesopresternum complete, slender medially. Fore femora and tibiae slender, without tubercles, fore tarsal tooth about 0.5 of tarsal width. Mesonotum transversely reticulate, lateral setae elongate, capitate. Metanotum without sculpture anteromedially, median setae acute and arising on anterior third of sclerite. Fore wings relatively slender, parallel sided, sub-basal setae long, S1 and S2 capitate, S3 bluntly acute; with 6 duplicated cilia.

Pelta bell-shaped; tergites II–VII with 2 pairs of wing retaining setae, also 3–4 pairs of lateral discal setae arranged in a line, lateral setae S1 and S2 long and capitate; tergite IX setae S1 weakly capitate, S2 blunt, intermediate seta as long as S2. Sternite V with 12 discal setae, VIII with no pore plate.

Measurements (holotype male in microns). Body length 1950. Head, length 230; width 170; po setae 90. Pronotal setae length: am 55, aa 65, ml 70, epim 90, pa 85. Fore wing length 900; sub-basal setae 70, 75, 110. Tergite IX setae S1 75; intermediate seta 25; S2 30; S3 80. Tube length 150. Antennal segments III–VIII length 65, 70, 80, 75, 60, 45.

Female macroptera. Body colour and structure similar to male. Tergite IX intermediate setae almost as long as setae S1.

Measurements (paratype female in microns). Body length 2100. Head, length 230; po setae 100. Tergite IX setae S1 75; intermediate seta 55; S2 85; S3 85. Tube length 160.

Specimens examined. Holotype male, Queensland, Lamington, O’Reilly’s, from tree bark, i. 2007 (IBISCA 22194).

Paratypes: same locality as holotype, 5 females, March, September & November, 2007.

Comments. This species has unusually long major setae on the head and pronotum in both sexes, but the male is known only from one specimen.

Figures

FIGURES 22 – 28. Hoplandrothrips from Australia. Head & pronotum 22 – 24: (22) ibisci sp. n.; (23) oreillyi sp. n.; (24) quadriconus. Meso & metanotum, pelta & tergite II, 25 – 26: (25) ibisci sp. n.; (26) quadriconus. Mesopresternum of xanthocnemis, 27 – 28: (27) female; (28) male.