Stictothrips denaeus, Minaei & Mound, 2020

Minaei, Kambiz & Mound, Laurence, 2020, Key to world Stictothrips species with description of a new species from Iran (Thysanoptera: Phlaeothripidae), Zootaxa 4772 (2), pp. 379-384 : 380-382

Stictothrips denaeus sp. n.

Female macroptera ( Fig. 1 ). Body light brown with complex reticulate sculpture, legs and antennae bicoloured; basal and distal part of tibiae yellow, tarsi brown; antennal segments I–III and V almost yellow, other segments brown (cf. Fig. 7 ), all major setae pale ( Fig. 5 ). Antennae 8-segmented, III with one sense cone, IV with two major sense cones, VIII narrowed at base but not constricted (cf. Fig. 7 ). Head longer than wide, post ocular setae not developed; mouth cone short; maxillary stylets close together medially ( Fig. 2 ). Pronotum with 4 pairs of relatively broadly expanded, fan-shaped major setae (anteroangulars, midlaterals, epimerals, and posteroangulars), epimerals longest, anteromarginals not developed; notopleural sutures incomplete. Fore tarsal tooth developed ( Fig. 2 ). Metanotum has a striking U-shaped marking ( Fig. 3 ). Metathoracic sternopleural sutures extend posteriorly from the mid-coxal cavities. Prosternal ferna transverse, not meeting medially; mesopresternum transverse ( Fig. 8 ). Fore wing constricted sub medially, without duplicated cilia. Pelta bell shaped, reticulate with a pair of campaniform sensilla (cf. Fig. 11 ); abdominal tergites II–VII with two pairs of wing-retaining setae, segment IX with seta S1 and S2 broadly capitate, tube long, at least three times longer than basal width but shorter than head ( Fig. 4 ).

Measurements (holotype macropterous female in microns): Body distended length 1785. Head, length 275; width across genae 235. Pronotum, length 180; median width 280; major setae, anteroangulars 20, midlaterals 20, epimerals 40, posteroangulars 30. Fore wing length 610.Tube length 160; basal width 55. Antennal segments I–VIII length 40, 65, 87, 60, 60, 50, 47, 37.

Female microptera. Very similar to macroptera, including the pelta ( Fig. 6 ).

Male macroptera. Generally similar to female but smaller and a little paler. Fore tarsal tooth variable, as female or less developed than female ( Figs 9–10 ); sternites VII and VIII with large median but weakly defined pore plate ( Fig. 12 ). Aedeagus spoon shaped.

Measurements (paratype male in microns): Body distended length 1620. Head, length 240; width across genae 200. Pronotum, length 115; median width 230; major setae, anteroangulars?, midlaterals?, epimerals 40, posteroangulars 25. Fore wing length 530. Tube, length 130; basal width 45. Antennal segments I–VIII length 35, 60, 80, 58, 53, 50, 48, 30.

Male microptera. Very similar to macroptera.

Material studied. Holotype macropterous female, IRAN, Kohgiluyeh and Boyer-Ahmad province, Kareyak

(30.8179° N, 51.4178° E), Platanus orientalis (twigs), 23.viii.2017 ( KM 1699 ) (in NHM) .

Paratypes: 1 male (macropterous), same data as holotype ; 1 female (macropterous), 1 female (micropterous), 3 males (macropterous), 2 males (micropterous), same locality and plant, 24.v.2018 ( KM 1906 ) (in PPSU) .

Comments. The new species described here is similar to the type species of the genus, maculatus , in having the tube uniformly brown and antennal segment VII as brown as VI and VIII. These character states distinguish it from S. faurei and S. leopardinus but the shape of the genae on the head is intermediate between these two species. It shares with leopardinus the form of the U-shaped brown marking on the metanotum, whereas in faurei there are two separate brown marks on the metanotum. However, it shares with faurei a slender antennal segment III whereas Priesner (1932) described and clearly illustrated this segment for leopardinus as shorter and stouter.

Etymology. Dena is the name for a sub-range within the Zagros Mountains. Mount Dena is situated on the boundary of three provinces of Iran: Isfahan, Kohgiluyeh and Boyer-Ahmad and Chaharmahal and Bakhtiari. This mount has more than 40 peaks higher than 4000 meters.

Figures

FIGURES 1–8. Stictothrips denaeus sp.n., macropterous and micropterous female. Macropterous: (1) Body; (2) Head, pronotum and prolegs; (3) Meso & metanotum; (4) Abdominal tergite IX and tube; (5) Abdominal tergites VII and VIII. Micropterous: (6) Body; (7) Antenna; (8) Ferna & mesopresternum.

FIGURES 9–12. Stictothrips denaeus sp.n., macropterous male: (9–10) Fore leg; (11) Pelta; (12) Abdominal sternites VII– VIII.