Pseudodendrothrips maculatus, Masumoto & Okajima, 2017

Masumoto, Masami & Okajima, Shûji, 2017, Studies on Dendrothripinae (Thysanoptera, Thripidae) from Japan, with new records and one new species, Zootaxa 4362 (3), pp. 405-420 : 415-418

Pseudodendrothrips maculatus sp. n.

( Figs 8, 9 , 31–41)

Female macroptera. Body pale or slightly shaded with brown markings ( Figs. 8 , 38, 39 ); head shaded between antennae; pronotum with longitudinal pale brown sublateral markings anterior to transverse ridge; abdominal tergite I shaded, II shaded except median third, III–X pale but III–VII shaded marginally and with two pairs of brown markings on submedian areas, VIII with brown spots laterally; antennal segments I–IX shaded, IV–VI pale at base; fore wing pale with brown spots around setae except a basal seta, clavus shaded but pale medially; all femora pale brown, tibiae pale but pale brown at middle; all tarsi pale; major setae pale or slightly shaded, but a lateral tergal seta and ventral seta on abdominal tergite IX and veinal setae on dark spot of fore wing brown.

Reticulation on head with internal wrinkles between compound eyes; ocellar setae III small and situated in front of hind ocelli (Fig. 31); compound eye with stout setae, with 6 pigmented facets ventrally; mouth-cone slender and pointed at apex (Fig. 32), maxillary palp segments I–II ratio length/width as follows: 3.2–4.0, 4.7. Antennae 9-segmented (Fig. 33), segment II with small longitudinal lines or dots between striae, III and IV with sensoria reaching to basal third and to middle of next segments, respectively, segment VI with inner sensorium arising from base and slightly exceeding apex of VII, VIII with outer sensorium arising from base and not reaching to apex of IX. Antennal segments I–IX ratio of length/width as follows: 8.0, 10.0, 7.0, 7.0, 5.5, 4.0, 2.5, 2.0, 1.0.

Pronotum with small dots or wrinkles between transverse lines, about 10 discal setae; posteromarginal S4 setae about twice as long as pronontal median length, S1–S3 setae subequal in length to discal setae and much shorter than S4 setae. Metascutum with longitudinal lines at middle and reticulate laterally, with weak wrinkles between lines and within reticulations (Fig. 34). Fore wing with stout setae except a basal seta on first vein; costal vein with 24 setae. Abdominal tergite I sculptured with longitudinal lines having many short transverse lines at middle, small wrinkles between longitudinal lines (Fig. 37), medially and laterally with several small microtrichia on posterior margin; III–VIII with minute microtrichia at posterior ends of longitudinal ridges ( Fig. 38 ), small dots between longitudinal ridges; II–VII with minute microtrichia on posterior margin behind sculptured areas, but microtrichia developed behind S2 setae of IV–VII, with microtrichia on posterior margin behind S1 setae of V–VII; tergite IX with three pairs of setae arranged transversely near posterior margin, S3 setae shorter and stouter than remaining setae ( Fig. 39 ); tergite X with numerous microtrichia on posterior half and S1 setae stout; sternites with small longitudinal ridges along transverse lines lateral to S2 setae; sternite IX with posteromarginal S2 setae shorter and stouter than S3 setae of tergite IX.

Measurements (holotype female in microns) Distended body length 870; head length 41, width across cheeks 123, compound eye dorsal length 38, width 38. Maxillary palp segments I to II length (width) as follows: 15–16 (5), 14–15 (4). Pronotal median length 63, width 145; posteroangular setae (S4) length 30–38. Metascutal median length 53. Fore wing length 590, width at middle 30. Abdominal tergite IX median length 60; tergite X length 33. Ovipositor length 160. Antennal segments I to XI length (width) as follows: 20 (20), 25 (25), 28 (18), 28 (18), 25 (14), 28 (10), 9 (6), 13 (5), 13 (3).

Male macroptera. General structure very similar to female ( Fig. 9 ), but smaller and paler, veinal setae of fore wings more slender than in female. Mouth-cone and maxillary palps shorter than in female ( Fig. 40 ); abdominal tergite IX with a few microtrichial rows at middle, tergite X with microtrichia posteromedially ( Fig. 41 ).

Measurements (paratype males in microns). Distended body length 730; head length 48, width across cheeks 108–110, compound eye dorsal length 48, width 35. Maxillary palpal segments I to II length (width) as follows: 20 (5), 18 (4). Pronotal median length 63, width 123–125; posteroangular setae (S4) length 30–33. Metascutal median length 45. Fore wing length 420, width at middle 25. Antennal segments I to XI length (width) as follows: 15–18 (18), 23 (21–23), 23–25 (15), 28 (14–15), 23–24 (15), 25 (3), 5–6 (5–6), 10 (5), 13, (3).

Type series. Holotype female, Japan, Honshu, Kanagawa Pref., Zushi City, Mt. Futago-yama, on leaf of Morus bombycis [ Moraceae ], 28.ix.2006, M. Masumoto. Paratypes: a female & a male, same data as holotype. Non-paratypic specimen: Japan, Honshu, Kanagawa Pref., Yokohama City, Tomioka-sougoukouen park, 1 male on leaf of Aucuba japonica [ Cornaceae ], 24.viii.2005, M. Masumoto. The holotype and paratypes are deposited in TUA.

Comments. This new species is somewhat similar to P. gillespiei Mound from Australia in the coloration and sculpture of body and short stout setae on the fore wing vein. However, P. gillespiei has the fore wing median third dark and abdominal segment IX with lateral setae stouter.

Etymology. In reference to the brown markings on the abdominal tergites and fore wings of this species.

Figures

FIGURES 1–10. Japanese species of Dendrothripinae. Leucothrips, female 1–3. (1) L. furcatus; (2) L. nigripennis; (3) L. piercei. Pseudodendrothrips, 4–10; (4) P.bhattii, female; (5) P.darci, female; (6) P.lateralis, female; (7) P.lateralis, male:(8) P. maculatus, female; (9) P.maculatus, male; (10) P.mori, female.

FIGURES 38–43. Pseudodendrothrips species. P. maculatus sp. n., female 38–39; (38) Abdominal tergite V (omitted dots between longitudinal ridges); (39) Abdominal tergites VII–X. P. maculatus sp. n., male 40–41; (40) Head & pronotum (sculptureomitted on pronotum); (41) Abdominal tergites IX–X.Abdominal tergites IX–X,female, 42–43; (42) P.bhattii; (43) P. darci.