Lissothrips hypni, Mound, Laurence A. & Tree, Desley J., 2015

Mound, Laurence A. & Tree, Desley J., 2015, Species of Lissothrips and Williamsiella from mosses and lichens in Australia and New Zealand (Thysanoptera, Phlaeothripinae), Zootaxa 3946 (3), pp. 361-373 : 368-369

Lissothrips hypni sp.n.

( Figs 4 , 10 , 19 , 23 )

Female microptera. Body, all femora and antennal segments IV–VIII brown; tibiae brownish yellow, tarsi and antennal segment III yellow, tube dark brown, major setae weakly shaded. Head slightly wider than long, weakly reticulate near posterior margin ( Fig. 10 ); 3 ocelli present but scarcely 5 microns in diameter; compound eyes welldeveloped, with at least 16 facets both dorsally and ventrally, ventral posterior margin broadly rounded; po setae long and capitate; maxillary stylets retracted to level of compound eyes, less than one third of head width apart medially. Antennae 8-segmented, III unusually small and sub-spherical with no sense cones ( Fig. 4 ), IV with 3 slender sense cones, VIII slender and narrowed to base. Pronotum transverse, without sculpture; notopleural sutures almost complete; major setae all long and capitate. Fore tarsal inner apical margin with minute tooth. Mesonotum transversely reticulate on anterior half, lateral setae long and capitate; fore wing lobe with 2 capitate setae ( Fig. 19 ); metanotum almost without sculpture, median setae wide apart small and fine. Prosternal ferna weakly developed, usually hidden beneath mouth cone; basantra bluntly pointed medially; mesopresternum transverse but weakly developed medially; anterior margin of mesoeusternum transverse; metathoracic sternopleural sutures weakly indicated. Abdomen with pelta small, irregularly D-shaped, campaniform sensilla present; tergites with median setae minute, III–VI with 2 pairs of long capitate setae laterally, VII with external pair long and acute; tergite IX setae acute but scarcely longer than tube; anal setae about as long as tube. Sternites with 6 to 8 small discal setae, median marginal setae longer than lateral pair.

Measurements (holotype female in microns). Body length 1350. Head, length 135; po setae 45. Pronotum, length 85; width 200; setae—am 40, aa 40, ml 40, epim 55, pa 45. Mesonotal lateral setae 30. Fore wing lobe 75. Tergite IX setae S1 100. Tube length 85. Antennal segments III–VIII length, 27, 35, 35, 45, 43, 25.

Male microptera. Very similar to female, but smaller, tarsal tooth not visible; tergite IX setae S2 stout but very short ( Fig. 23 ); sternites with few discal setae, VIII with no pore plate.

Measurements (paratype male in microns). Body length 1050. Pronotum, length 75; width 175; setae—am 35, aa 32, ml 35, epim 38, pa 35. Fore wing lobe 50. Tergite IX setae S1 85; S2 20. Tube length 80.

Material studied. Holotype female microptera, Australia, Queensland, Cape Tribulation, Carbeen Road, from barkspray of buttress roots, 7.x.2012 (DJT 1483).

Paratype: 1 male taken with holotype.

Comments. This species shares two characters with corticosus : the capitate postocular setae, and the short and rounded third antennal segment. However, in hypni this segment is yellow whereas it is dark brown in corticosus . Both species are unusual in having the fore wing lobe well developed. Some of the character states on the hypni specimens are probably correlated with wing length, but the presence of three sense cones on the fourth antennal segment is found only in the related species, discus , amongst the Lissothrips species from Australia.

Figures

FIGURES 1 – 7. Lissothrips species from Australia—antennae. (1) corticosus; (2) discus; (3) dentatus; (4) hypni; (5) tallagandai; (6) taverneri; (7) thomsonae.

FIGURES 8 – 15. Lissothrips species from Australia—head and pronotum. (8) corticosus; (9) discus; (10) hypni; (11) gersoni; (12) taverneri; (13) tallagandai; (14) discus; (15) thomsonae.

FIGURES 16 – 21. Lissothrips species from Australia—meso & metanotum and pelta. (16) corticosus; (17); dentatus; (18) discus; (19) hypni; (20) tallagandai; (21) taverneri.

FIGURES 22 – 28. Lissothrips species from Australia. (22) thomsonae meso & metanotum and pelta. (23) hypni male tergites VIII-X. Thoracic sternites 24 – 26: (24) corticosus, (25) tallagandai, (26) taverneri. Male sternite VIII 27 – 28: (27) tallagandai, (28) thomsonae.