Dendrothrips magnoliae Kudô, 1984

Wang, Zhaohong, Mound, Laurence A. & Tong, Xiaoli, 2019, Character state variation within Dendrothrips (Thysanoptera: Thripidae) with a revision of the species from China, Zootaxa 4590 (2), pp. 231-248 : 238-240

Dendrothrips magnoliae Kudô

( Figs 6–7 , 29–30 , 34 , 45–46 , 57–58 )

Dendrothrips magnoliae Kudô, 1984: 494 .

This species seems to be particularly unusual within Dendrothrips in having ocellar setae pair III within the ocellar triangle, a condition shared only with guttatus . The pronotal sculpture is remarkably sexually dimorphic, and demonstrates an interesting correlation between the presence of pronotal transverse striae and longer posteroangular setae (in males), in contrast to a reticulate pronotum and no long setae (in females). The original females were de- scribed from Japan on Magnolia kobus [ Magnoliaceae ], but specimens from China were collected from an unrelated deciduous broad-leaved tree species, Ulmus pumila [ Ulmaceae ]. The original description of the species indicated that the female has antennal segments II–V yellow, but specimens from China have segment II brown, at least clearly darker than III ( Fig. 45 ). The extent of the sub-basal pale areas on the fore wing are variable ( Figs 29 ).

Female: Body brown with clear pale area ( Fig. 57 ), head brown with interocellar area pale, pronotum brown with four longitudinal light patches, mesonotum with pale patches posterolaterally ( Fig. 6 ), abdominal tergites V–VII laterally with annular pale areas, tergites VIII–X paler with brown patches. Fore wing brown with irregular sub-basal pale area and a small pale band in the middle ( Fig. 29 ). Antennae pale, segment I (or I–II), distal half of VI and VII–VIII brownish; segments III–IV with forked sense cones ( Figs. 45 ). Head with irregular reticles, ocellar setae III situated between hind ocelli; pronotum reticulate with inner wrinkles, mesonotum with transverse striae and metanotum with longitudinal reticles bearing wrinkles; tergites II–VIII posterolaterally with numerous tubercles in transverse lines ( Fig. 34 ); sternite VII with 3 pairs of setae in front of margin.

Male: Body including legs pale ( Fig. 58 ), head brown with occipital region paler; antennal segments I–V pale, VI–VIII pale brown ( Fig. 46 ); fore wing brown with 2 pale areas, sub-basally and sub-apically ( Fig. 30 ). Head smooth except occipital region sculptured with transverse reticles, ocellar setae pair III arising between hind ocelli. Antennae 8-segmented, segment VI with an incomplete suture; sense cones on III and IV small and U-shaped, sense cone on VI arising near middle of segment. Pronotum with transverse anastomosing striae bearing no internal markings, 3 pairs of posteromarginal setae prominent, 1 pair of posteroangular setae longest ( Fig. 7 ). Mesonotum with

transverse anastomosing striae; metanotum longitudinally striate without markings. Abdominal tergites III–VIII laterally with transverse anastomosing lines bearing small tubercles, lines on tergite IX bearing microtrichia.

Material examined: CHINA, Shandong (in SCAU), Zhangqiu, Duozhuang Reservoir (36°29'12"N, 117°24'26"E), 2 females 2 males collected from Ulmus pumila [ Ulmaceae ], 9.x.2017 (Zhaohong Wang) . Jilin (in ANIC), Mt. Changbai , 1 female from canopy of trees, 11.viii.2016 (Cui Yanze) .

Distribution: China (Jilin, Shandong), Japan (Honshu).

Host plants: Magnolia kobus [ Magnoliaceae ].

Figures

FIGURES 1–11. Dendrothrips. Head and pronotum 1–5: (1) latimaculatus; (2) diaspora; (3) ornatus; (4) minowai; (5) homalii. Head and thorax of magnoliae 6–7: (6) female; (7) male. (8) Head of octosparsus sp. n. Pronotum 9–11: (9) jeanneli; (10) octosparsus sp. n.; (11) stannardi.

FIGURES 24–31. Dendrothrips. Meso- and metanotum 24–26: (24) latimaculatus; (25) ornatus; (26) octosparsus sp. n. Forewing 27–31: (27) latimaculatus female; (28) latimaculatus male; (29) magnoliae female; (30) magnoliae male; (31) ornatus.

FIGURES 32–37. Dendrothrips. Tergites 32–35: (32) diaspora IV–VI; (33) jeanneli IV–VI; (34) magnoliae IV–VII; (35) stannardi V–VII. Sternites 36–37: (36) jeanneli V–VII; (37) octosparsus sp. n. VI–VII.

FIGURES 41–49. Antenna: (41) homalii male; (42) latimaculatus female; (43) latimaculatus male; (44) minowai; (45) magnoliae female; (46) magnoliae male; (47) octosparsus sp. n. female; (48) octosparsus sp. n. male; (49) stannardi.

FIGURES 57–62. Dendrothrips. magnoliae 57–58: (57) female; (58) male. minowai 59–60: (59) female; (60) male. ornatus 61–62: (61) female; (62) male.