Haplothrips helanshanensis Dang & Mound, 2023

Dang, Lihong & Mound, Laurence, 2023, Sexual dimorphism of feeding stylets in some Thysanoptera - Phlaeothripinae, with description of two new species of Haplothrips from China, ZooKeys 1176, pp. 29-36 : 29

Haplothrips helanshanensis Dang & Mound sp. nov.

Figs 5 , 6 , 9 , 11 , 13 , 15 , 17 , 18

Materials examined.

Holotype, ♀ (SNUT), China, Inner Mongolia, Helan Mountain National Nature Reserve , on Artemisia sp., 04.viii.2010, L.H. Dang . Paratypes, 2♀ 2♂ (SNUT), with the same data as holotype ; 1♀ 1♂ (ANIC), with the same data as holotype .

Description.

Female macroptera. Body brown. All legs brown, with brownish yellow on fore tarsi and extreme apices of fore tibiae. Antennal segments uniformly brown, with III yellowish brown (Fig. 9 ). Wings and body setae hyaline.

Head. Head elongate, about 1.5 times as long as wide (Fig. 5 ); dorsal surface sculptured with transverse striae; eyes small, about one-quarter of head length, postocular setae minute, similar to other cheek setae (Fig. 5 ); cheeks parallel. Mouth-cone rounded, maxillary stylets long, retracted into postocular setae, close together, the narrowest separation about 5 μm, bridge stout and short, 15 μm wide (Fig. 5 ). Antennae 8-segmented, sense cones on segments III-IV small, about half breadth of this segment, III with 1+1, IV with 2+2 (Fig. 9 ).

Thorax. Pronotum weakly sculptured, notopleural sutures complete (Fig. 5 ); am, aa and ml minute, epim and pa setae developed, pointed at apex, epim the longest (Fig. 5 ); mesopresternum eroded medially, reduced to two small, lateral, triangular plates (Fig. 11 ); metanotum weakly reticulate at middle and smooth laterally (Fig. 13 ), metathoracic sternopleural sutures absent. Fore tarsi with a tiny tooth (Fig. 17 ).

Abdomen. Pelta acutely triangular and weakly reticulate, with a pair of campaniform sensilla (Fig. 13 ); abdominal tergites II-VII with two pairs of wing-retaining setae; S1-S3 on tergite IX short, much shorter than tube, pointed at apex (Fig. 15 ); tube about 0.4 times as long as head, 1.8 times as long as basal width, anal setae shorter than tube.

Measurements (holotype female in μm). Body length 2050. Head length 255, width just behind eyes 175; eye length 60, postocular setae length 10; the narrowest separation between maxillary stylets 5, width of bridge 15. Antenna length 370, segments I-VIII length (widest) 35(30), 50(32), 60(32), 60(30), 60(30), 45(25), 40(20) and 30(12), sensoria on segment III length 15. Fore wing length 88. Pronotum length125, width 235, length of pronotal setae, am 5, aa 5, ml 5, epim 23, pa 15. Pelta length 95, width 85; tergite IX posteromarginal setae S1-S3, 75, 65, 45; tube length 105, basal width 60, apical width 35; anal setae length 85.

Male macroptera. Similar to female; but maxillary stylets wider apart, about one-quarter of head width (Fig. 6 ); postocular setae slightly longer than other cheek setae; fore tarsal tooth bigger than in females (Fig. 18 ); abdominal tergite IX setae S2 short and stout, sternites without a pore plate.

Measurements (paratype male in μm). Body length 1820. Head length 225, width just behind eyes 160; eye length 70, postocular setae length 15; the narrowest separation between maxillary stylets 40, width of bridge 40. Antenna length 375, segments I-VIII length (widest) 30(30), 35(25), 55(22), 55(30), 55(25), 45(20), 45(20) and 30(12), sensoria on segment III length 15. Pronotum length 115, width 220, length of pronotal setae, am 10, aa 10, ml 10, epim 25, pa 20. Fore wing 80. Pelta length 80, width 75; tergite IX posteromarginal setae S1-S3, 85, 35, 80; tube length 130, basal width 55, apical width 35; anal setae length 85.

Etymology.

This species name is based on its collecting location.

Comments.

This new species is similar to the Australian species, H. salicorniae Bournier, in having the postocular setae minute, mesopresternum eroded medially, antennal segments III-IV with two and four sense cones respectively, S1 on tergite IX much shorter than tube, fore tarsal tooth tiny in female, metanotum sculptured with reticulation, and the colour pattern of legs and antennae. In contrast, because the fore wings of H. salicorniae have no duplicated cilia, that species is placed in the subgenus Haplothrips Trybomiella . The new species from China has several duplicated cilia on fore wings and is placed in the subgenus Haplothrips Haplothrips . In addition, in H. salicorniae the pronotum has three pairs of well-developed setae (aa, epim and pa) that are expanded at the apex, whereas in H. helanshanensis sp. nov. these setae are pointed at the apex and the aa and pa are minute (Figs 5 , 6 ). In both species the females have similarly shaped heads and maxillary stylets, but unfortunately, males of H. salicorniae remain unknown ( Mound and Minaei 2007).

Figures

Figures 1 - 8. Haplothrips spp. Heads of H. stofbergi (1, 2) 1 female 2 male; H. timori (3, 4) 3 head, male 4 head and pronotum, female; head and pronotum of H. helanshanensis sp. nov. (5, 6) 5 female 6 male; head and pronotum of H. longistylus sp. nov. (7, 8) 7 male 8 female.

Figures 9 - 20. Haplothrips spp. antennae (9, 10) 9 H. helanshanensis sp. nov. 10 H. longistylus sp. nov.; prosternum and mesopresternum (11, 12) 11 H. helanshanensis sp. nov. 12 H. longistylus sp. nov.; metanotum and tergites I-II (13, 14) 13 H. helanshanensis sp. nov. 14 H. longistylus sp. nov.; tergites IX-X (15, 16) 15 H. helanshanensis sp. nov. 16 H. longistylus sp. nov.; fore tarsal tooth of H. helanshanensis sp. nov. (17, 18) 17 female 18 male; fore tarsal tooth of H. longistylus sp. nov. (19, 20) 19 female 20 male.