Lenkothrips, De Santis & Sureda, 1970

Lima, Élison Fabrício B., Zamar, María I., Greco, Nancy & Rocca, Margarita, 2024, The Neotropical genus Lenkothrips (Thysanoptera: Heterothripidae): additions to the faunas of Argentina and Brazil with an updated key to species, Zootaxa 5489 (1), pp. 184-191 : 185-186

Key to Lenkothrips species

(Adapted from Cavalleri & Mound (2014))

1. Body colour yellow ( Fig. 15 )............................................................... pantanal sp. n.

-. Body colour brown ( Figs 1 , 6 )........................................................................... 2

2. Fore wing uniformly brown ( Fig. 3 )...................................................................... 3

-. Fore wing with basal fourth hyaline ( Fig. 6 )................................................................ 4

3. Antennal segments VII–IX elongated [together 6.5 times longer than segment VII width]; abdominal tergite VI with posteromarginal fringe of microtrichia complete........................................................ daedali

-. Antennal segments VII–IX shorter [together less than 4.5 times longer than segment VII width] ( Fig. 2 ); abdominal tergite VI with posteromarginal fringe of microtrichia incomplete medially..................................... canastra sp. n.

4. Pronotum almost smooth, or with few faint marginal lines of sculpture, bearing less than 20 discal setae................ 5

-. Pronotum with numerous lines of sculpture, bearing more than 25 discal setae ( Fig. 9 ).............................. 6

5. Hind tibiae brown medially but yellow at base and apex; fore wing banded, extensively pale distal to dark area, but with extreme apex dark; male pore plates transverse, on sternite VII about 5.0 times wider than median length........ sensitivus

-. Hind tibiae clear yellow; fore wing uniformly dark brown distal to paler sub-basal area; male pore plates oval, on sternite VII usually less than 3.0 times wider than median length................................................ mollinediae

6. Sensorium on antennal segment IV extending into at least basal fifth of segment; lateral thirds of the tergites with numerous and well developed microtrichia............................................................................. 7

-. Sensorium on antennal segment IV extending only to mid-point of segment ( Fig. 7 ); microtrichia on lateral thirds of abdominal tergites scarce, evident only on the striae close to the anterior margin ( Fig. 11 )........................... moundi sp. n.

7. Antennal segments VIII & IX long and narrow, each more than 3.7 times as long as wide; antennal segment IV bicoloured, basal half yellow; fore wing setae long, median setae about 0.7 times as long as fore wing median width; male pore plates oval, on sternite VII less than 2.0 times wider than long...................................................... kaminskii

-. Antennal segments VIII & IX short and broad, scarcely 3.0 times as long as wide; antennal segment IV uniformly brown, sometimes paler only in basal fifth; fore wing setae shorter, median setae scarcely 0.5 times as long as fore wing median width; male pore plates large and transverse, on sternite VII about 5.0 times wider than long..................... guaraniticus

Figures

FIGURES 15–21. Lenkothrips pantanal sp. n. (15) female; (16) male; (17) antenna; (18) fore wing; (19) head and pronotum; (20) abdominal tergites VII–X; (21) male abdominal sternites IV–VIII.

FIGURES 1–5. Lenkothrips canastra sp. n. (1) female; (2) antenna; (3) fore wing; (4) head, thorax and abdominal tergites I–II; (5) abdominal tergites III–X.

FIGURES 6–14. Lenkothrips moundi sp. n. (6) female; (7) antenna; (8) head; (9) pronotum; (10) meso- and metanotum; (11) abdominal tergite IV; (12) abdominal tergite VII; (13) sternite VII; (14) associated plant, Solanum sisymbriifolium.