Aliceathrips engaius, Mound, Laurence A., 2011

Mound, Laurence A., 2011, Grass-dependent Thysanoptera of the family Thripidae from Australia, Zootaxa 3064, pp. 1-40: 10

publication ID 10.5281/zenodo.200567

persistent identifier

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scientific name

Aliceathrips engaius


Aliceathrips engaius   sp.n.

( Figs 4–8 View FIGURES 1 – 10 )

Female macroptera. Body and legs yellow, ovipositor and mouth parts dark; fore wing slightly darker on basal half than on distal half; antennal segment I pale, II light brown, III –V yellow with apex light brown, VI –VIII brown. With the character states in the generic diagnosis; antennae 8 -segmented ( Fig. 8 View FIGURES 1 – 10 ), III with sensorium simple, IV with sensorium forked (inner branch sometimes slender and difficult to see). Ocellar setae III 1.5 times as long as an ocellus ( Fig. 5 View FIGURES 1 – 10 ). Pronotal posteroangular setae inner pair much shorter than outer pair; metanotum with weak irregular sculpture ( Fig. 5 View FIGURES 1 – 10 ); mesosternal anterior margin with about 12 setae; tergites with transverse reticulation, tergite IX median dorsal setae slender and not extending to posterior margin, posterior pair I equal in length to pair II; X with median split incomplete; sternite II with 0–3 discal setae, III –VII with 4–10 discal setae in an irregular transverse row.

Measurements (holotype female in microns). Body length 1550. Head length 150; width across eyes 145; ocellar setae III 23. Pronotum, length 150; maximum width 160; pa inner setae 20; pa outer setae 45. Fore wing length 720. Metanotal median setae 15. Tergite IX median-dorsal setae 45; marginal setae S 1 115; S 2 115. Tergite X setae S 1 65. Antennal segments III –VIII length 50, 42, 35, 48, 10, 12.

Male macroptera. Smaller and paler than female; tergite IX with pair of stout dark processes ( Fig. 4 View FIGURES 1 – 10 ); sternite III with transverse pore plate on antecostal area.

Material studied. Holotype female, Northern Territory, Macdonnell Ranges, Standley Chasm, from Triodia hubbardi   leaves, 24.iii. 2010 (Chris Palmer).

Paratypes: 7 females taken with holotype; same locality, date and collector, 2 females from Digitaria brownii   leaves, 11 females, 5 males from Neurachne tenuifolia   leaves; same locality, 31.x. 1999, 1 female, 1 male from Neurachne tenuifolia   leaves. Macdonnell Range, Ellery Creek, 2 females beaten from Alectryon oleifolius   , 1.xi. 1999.

Comments. This is the largest species in the genus, with a particularly slender body. It differs from the other species in having the maxillary palps elongate and 3 -segmented, the sensoria on the fourth antennal segment forked, and the median dorsal setae on tergite IX of females short and slender. The male has a pore plate only on sternite III, and the paired conical processes on tergite IX are different from those of the males of other species.