Hydatothrips onari Kudô, 1997

Hydatothrips onari Kudô, 1997 View in CoL ( Figs 1–10)

Diagnosis. Female macroptera. Body brown except abdominal segment IV and V yellow ( Fig. 1); antennal segments I–II yellow, III yellow with apex brown; IV brown with basal 1/3 pale; V–VIII brown. Fore wing brown with a pale sub-basal area ( Fig. 9). Antennae 8-segmented ( Fig. 10). Head wider than long, ocellar triangle with sculpture and internal markings within; occipital apodeme touching posterior margin of eyes ( Fig. 3). Pronotum transversely reticulate with internal markings in front of blotch; blotch well defined, transversely striated with internal markings; 2 pairs of posteromarginal setae. Mesonotum median pair of setae ahead to posterior margin ( Fig. 4). Metanotum with transverse sculpture anteromedially and posteromedially, longitudinally striate at middle, with internal markings; median pair of setae well behind anterior margin. Mesosternum with V-shaped invagination on the anterior margin of metasternal plate ( Fig. 7). Fore wing first vein with continuous row of setae, second vein with 2 setae ( Fig. 9). Abdominal tergite I medially without marginal microtrichia; II–IV with weakly developed marginal microtrichia ( Fig. 5); V–VIII with complete row of marginal microtrichia, short in middle ( Fig. 8); tergite II–VII with S3 setae arising at posterior margin ( Fig. 5). Abdominal sternites without discal setae; discal microtrichia present only laterally. Male macroptera. Similar to female, but smaller in size ( Fig. 2); sternites VI–VII each with elongated transverse pore plate ( Fig. 6).

Material examined. India, Odisha, Semiliguda ( 18°42'00.9"N 82°51'15.0"E), 3♀, 2♂, on Guizotia abyssinica (L.f.) Class. ( Asteraceae ), 28.x.2022, leg. Abhishek Patidar. (Registration No: 12642/H17 to 12646/H17) GoogleMaps

Distribution. India (New record), Japan, Malaysia and China (Mirab-balou et al., 2013).

Remarks. This species is very close to Hydatothrips dorax Bhatti, 1973 but females can be differentiated from H. onari by the colour of the abdominal segment V, antennal segment V and shape of the pore areas on abdominal sternites VI and VII. The abdominal segment V pale yellow in H. onari whereas brown in H. dorax ; antennal segment V brown in H. onari and bicoloured in H. dorax . Males of H. onari can be differentiated by the shape and length of the pore areas on abdominal sternites VI and VII. Pore areas on abdominal sternite VI in H. onari 13 times longer than H. dorax , and on VII in H. onari nearly four times longer than H. dorax ( Bhatti, 1973, Kudô, 1997).