Haplothrips dissociatus, Cavalleri & Lindner & Mendonça Jr, 2016

Cavalleri, Adriano, Lindner, Mariana F. & Mendonça Jr, Milton de S., 2016, New Neotropical Haplothripini (Thysanoptera: Phlaeothripidae) with a key to Central and South American genera, Journal of Natural History 50, pp. 1389-1410 : 1404

Haplothrips dissociatus sp. nov.

( Figures 2 , 3A–D )

Macropterous male. Body brown with red internal pigment; fore tibiae and fore tarsi paler, middle and hind tibiae brown; antennal segment I concolorous with head, II brown in basal 2/3 and lighter at tip, III–IV yellow, V–VI shaded with brown, VII–VIII light brown; fore wings pale, without median dark line, clavus brown; major body setae yellow; tergite X uniformly brown.

Head about 1.3 times as long as greatest width, cheeks straight; po setae well developed and expanded at tip; maxillary stylets retracted halfway to po setae and wide apart (about 0.7 of head width); antennae slender and eight-segmented, III with two and IV with four sense cones, VIII slightly constricted at base.

Pronotum rectangular and without reticulation, with a dark median longitudinal line; four pairs of long and capitate setae, am not longer than discal setae; basantra and ferna well developed; notopleural sutures complete; mesonotum weakly striate anteriorly; metanotum with no reticulation anteromedially and with a pair of median setae; fore femora enlarged, fore tarsal hamus well developed, tarsal tooth absent; duplicated cilia on fore wings present but variable in number (five to nine). Pelta sharply triangular and weakly reticulate; paired campaniform sensilla present; tergites II–VII each with two pairs of wing-retaining setae, second pair stouter; tergite IX setae S1 weakly expanded, S2 short and pointed, S3 finely acute, sternites with 12 to 20 discal setae placed in a row; sternite VIII with a small and irregular pore plate. Anal setae as long as tube.

Measurements of male (holotype), in microns (µm): length about 1522; head length 162, greatest width across cheeks 125, po length 40; median length of pronotum 120, width 187, aa length 32, ml length 30, epim length 47, pa length 40; tergite X length 102, basal width 50, apical width 27; length (width) of antennal segments III–VIII 40 (23), 41 (26), 42 (25), 37 (20), 32 (17), 25 (10), respectively.

Macropterous female ( Figure 2A ). Similar to male in colour and structure, but slightly longer; anterior femora not so enlarged; S1 setae on tergite IX smaller than S2 and S3, S2 long and finely acute.

Measurements of female (paratype): length about 1700; head length 165, greatest width across cheeks 135, po length 40; median length of pronotum 115, width 202, aa length 35, ml length 37, epim length 52, pa length 50; tergite X length 92, basal width 55, apical width 28; length (width) of antennal segments III–VIII 42 (27), 42 (30), 40 (25), 35 (22), 32 (17), 25 (10), respectively.

Type material

Holotype male, Brazil, Minas Gerais, Juiz de Fora county , from Lippia sp. flowers, November 2010 (Rodrigues, A. col.) ( UFRGS 2335 ) . Paratypes: two females and seven males collected with holotype; 18 females and 33 males from Brazil, Juiz de Fora , from Lippia sp . flowers, December 2011 (Cavalleri, A. col.).

Remarks

Haplothrips dissociatus is remarkable in having maxillary stylets strongly V-shaped and wide apart in head. The fore wing bears duplicated cilia and it is not as wide as what is exhibited by the typical South American species fi ebrigi, heliotropica and trellesi . Haplothrips graminis is similar to dissociatus in having reduced pronotal am setae, but the first has only one sense cone on antennal segment III and po setae is long and acute. Finally, the presence of a pore plate on sternite VIII of H. dissociatus males is unique within the genus Haplothrips .

Figures

Figure 2. Haplothrips dissociatus. (A) Female body. (B) Body with red internal pigmentation. (C) Head and pronotum. (D) Antenna. (E) Mesonotum, metanotum and pelta.

Figure 3. Haplothrips species. (A–D) Haplothrips dissociatus. (E) Haplothrips fiebrigi. (F) Haplothrips trellesi. (A) Male head and fore femora. (B) Prosternum. (C) Fore wing. (D) Male sternites VIII–IX, VIII with a small pore plate (arrow). (E) Head and pronotum. (F) Head and pronotum.