Gynaikothrips microchaetus Ananthakrishnan and Jagadish

SHYAM, M., JOHNSON, TH., RACHANA, R. R., VARATHARAJAN, R. & MOUND, L. A., 2019, Redescription and lectotype designation of Gynaikothrips microchaetus Ananthakrishnan & Jagadish (Thysanoptera: Phlaeothripidae), Zootaxa 4701 (6), pp. 588-590: 588-589

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Gynaikothrips microchaetus Ananthakrishnan and Jagadish


Gynaikothrips microchaetus Ananthakrishnan and Jagadish   ( Figs 1–9)

Female macroptera. B ody colour mainly brown; femora brown, tarsi yellow; fore tibiae yellow with small brown area at base, mid and hind tibiae brown with distal one-third yellow; tarsi yellow; antennal segments I–II brown, III–VIII uniformly yellow ( Fig. 3); pronotal epimeral setae pale to very weakly shaded. Head longer than wide; with two pairs of slender, pointed, po setae not reaching to compound eyes ( Fig. 1); po setae vary in length 16–43 microns, and also vary in position such that they are not always in a simple transverse row; maxillary stylets about one-third of head width apart, retracted to base of postocular setae ( Fig. 1). Antennal segmentation and sense cones typical of genus. Pronotum epimeral setae well developed, apex weakly expanded ( Fig. 2), am setae minute (6–15 microns), aa, ml and pa variable in length (10–30 microns); notopleural sutures complete. Fore tarsal tooth small, directed forwards ( Fig. 3). Fore wings parallelsided, with 14–20 duplicated cilia. Prosternal basantra absent; mesopresternum boat shaped; metathoracic sternopleural sutures absent. Pelta triangular ( Fig. 4); tergites II–VII with 2 pairs of sigmoid wing-retaining setae ( Fig. 7); tube length variable, anal setae shorter than tube ( Fig. 6).

Measurements (lectotype female in microns). Body length 2545. Head, length 275; width 222; po, inner pair 30; outer pair 20. Pronotum, length 158; width 282; major setae—am 15, aa 20, pa 24, ml 25, epim 96. Mesonotum lateral setae 30. Fore wing, length 930; sub-basal wing setae 16, 18, 30. Tergite IX setae, S1 225; S2 244; S3 198. Tube, length 289; width—base 71; apex 41; anal setae 244.

Male macroptera. Similar to female in colour and structure but smaller, fore tarsal tooth very small. Sternite VIII fully occupied by pore plate ( Fig. 9), also tergite VIII similarly occupied by this extensive pore plate except for a small triangle at median anterior margin ( Fig. 8).

Measurements (paralectotype male in microns). Body length 2442. Head, length 258; width 208; po, inner pair 19; outer pair 19. Pronotum, length 146; width 273; major setae—am 16, aa 27, pa 22, ml 20, epim 84. Mesonotum lateral setae 34. Fore wing, length 860; sub-basal wing setae 10, 16, 26. Tergite IX setae, S1 181; S2 26; S3 225. Tube, length 235; width—base 70; apex 36; anal setae 213.

Material studied: Lectotype female, INDIA, Karnataka, Dharwar from leaves of Ficus   sp., 10.x.1968 ( T. N. Ananthakrishnan); three paralectotype males with same data as lectotype; deposited in National Bureau of Agricultural Insect Resources ( ICAR-NBAIR), Bengaluru, India, also Insect Museum, Manipur University, Imphal, India.  

Further specimens: INDIA, Manipur, Manipur University campus 14 females, 7 males from leaves of Ficus curtipes   , 12.xi.2014 (Shyam Maisnam)   ; Mizoram, Dampa Tiger Reserve 7 females, 3 males from leaves of Ficus curtipes   , 27.iv.2015 (Th. Johnson) in Insect Museum   , Manipur University, Imphal, India.


Tavera, Department of Geology and Geophysics