Majerthrips barrow

Mound, Laurence A. & Minaei, Kambiz, 2006, New fungus­feeding thrips (Thysanoptera Phlaeothripinae) from tropical Australia, Zootaxa 1150, pp. 1-17 : 8

Majerthrips barrow i sp.n.

( Figs 9–11 )

Male microptera. Body bicoloured, head, thorax and pelta brownish yellow, abdomen brown; legs and antennae yellowish washed with light brown, antennal segments VI–VIII light brown; forewing remnant, and all major setae, pale. Head with reticulate sculpture, particularly posterolaterally; ocelli slightly reduced. Antennal segments V and VI with apices asymmetric. Pronotum with strong median apodeme. Tergites II–VII medially with conspicuous pair of campaniform sensilla and about 6 small setae; tergite IX setae S2 slightly shorter than S1 and S3 but equally capitate.

Measurements. Holotype male in microns. Body length 2600. Head, length 350; median width 200; postocular setae 50. Pronotum, length 200; median width 370; major setae am 10, aa 30, ml 40, epim 50, pa 40. Mesonotum lateral setae 20. Forewing length 150; basal setae 30. Tergite III median discal setae 20; major marginal setae 50; posteroangular setae 30. Tergite IX setae S1 80; S2 40, S3 80. Tube length 180; basal width 100; distal width 50. Antennal segments III – VIII length 100, 80, 75, 70, 50, 25.

Female microptera. Slightly larger than male but very similar in structure, except fore tarsal tooth a little smaller. Body length 2950.

Female hemimacroptera. Similar to microptera but with ocelli fully developed.

Female aptera. Larger than but generally similar to microptera, except as follows. Body and legs brownish yellow, tube dark brown. Head with ocelli small, postocellar setae short and capitate. Pronotal anteromarginal setae short and capitate. Metanotum transverse, median setae capitate; wing remnant and axillary sclerites not developed. Pelta small and bell­shaped; tergites II–VII with one pair of median setae capitate.

Measurements of female aptera in microns. Body length 3400. Head, length 430; median width 240; postocular setae 50; postocellar setae 25. Pronotum, length 300; median width 450; major setae am 15, aa 30, ml 30, epim 55, pa 30. Tergite III median discal setae 35; major marginal setae 50; posteroangular setae 30.

Male aptera. Similar to female; tergite IX S2 apparently absent; sternites with iridescent reticulation laterally well­developed.

Material studied

Holotype micropterous male, Western Australia, Barrow Island, beating vegetation at head height in gulley, April/May, 2005, Jonathan Majer.

Paratypes: 3ɗ 6Ψ micropterae 2Ψ 1ɗ aptera, collected with holotype.

Figures

FIGURES 9 – 14. Majerthrips and Sennithrips species. (9) M. barrowi micropterous female, ventral; (10) M. barrowi micropterous female, dorsal; (11) M. barrowi apterous female, metanotum and tergites I – II; (12) S. psomus, ventral; (13) S. psomus, dorsal; (14) S. psomus antenna. [ns = prothoracic notopleural suture; ss = metathoracic sternopleural suture]