Lestes undulatus Say, 1839

Lencioni, F. A. A., Neiss, U. G., Dutra, S. L., Furieri, K. S., Juen, L., Batista, J. D. & Vilela, Diogo S., 2021, Synopsis of Lestes from Brazil with description of Lestes demarcoi sp. nov (Zygoptera: Lestidae), Zootaxa 4990 (3), pp. 511-541 : 523

Lestes undulatus Say, 1839

Fig. 13 (♂ —App), Fig. 25 (♂ —habitus), Fig. 33 (♀ —habitus), Fig. 37 (G— ♀ S8–10), Fig. 39 (G— ♀ basal plate), Fig. 40 (M— ♀ pectoral color pattern).

Etymology: undulatus = Latin for wavy.

Lestes undulatus Say, 1839: 35 (description of male); Selys 1862: 311 (description of male and female, distribution); Kirby 1890: 161 (data on species description and distribution); Calvert 1909: 104 (key, illustration of thorax in ventral view, appendages in lateral and dorsal views); Kennedy 1942: 283 (illustration of appendages in lateral and dorsal views); Davies & Tobin 1984: 34 (data on publication and distribution); Muzón 1997: 7 (larvae); Lencioni 2005: 101, Fig. 60(A–C) (data on description, type locality, deposition, distribution, and larval description, illustration of appendages in lateral and dorsal views from Kennedy 1942, thorax in ventral view from Calvert 1909); Costa et al. 2006: 60–61, Fig. 25 (appendages lateral view, key for adult males); Garrison et al. 2010: 117 (data on species).

Types. Unknown.

Larva described. Yes ( Muzón 1997).

Additional material examined. (2 ♂♂ + 2 ♀♀): 2 ♂♂ + 2 ♀♀ Argentina: Buenos Aires, Los Torinas, charco s/ Rt 11, 18.i.1995, J. Muzón leg.

Distribution. Brazil (Rio Grande do Sul), Uruguay, Argentina, Chile.

Diagnostic characters. ♂ —Cercus in lateral view: basal 1/2 straight, slightly inclined upward, apical 1/2 comma–like with a twisted tip which is covered with pale setae; Cercus in medioventral view: basal expansion semicircular, without spines, a ridge separating the medial portion from the apical portion. Paraproct in lateral view: stout and very small (1/8 length of cercus). Paraproct in dorsal view: barely visible and slightly triangular.

♀ —Basal plate: species belonging to basal plate group 1 ( Fig. 38 ), with dorsal side more than twice the length of ventral side. Posterior side with dorsal and ventral sections subequal. Dorsal side and dorsal section of posterior side straight, ventral section of posterior side concave ( Fig. 39G ). Pectoral color pattern as in Fig. 40M .

Figures

FIGURE 13. Lestes undulatus: A—Appendages, lateral view; B—Appendages, mediodorsal view.

FIGURE 25. Lestes undulatus: Male habitus.

FIGURE 33. Lestes undulatus: Female habitus.

FIGURE 37. Female S8–S10: Lateral view: A—Lestes dichrostigma, B—Lestes forficula, C—Lestes minutus, D—Lestes paulistus, E—Lestes pictus, F—Lestes tricolor, G—Lestes undulatus, H—Lestes demarcoi sp. nov.

FIGURE 38. Female basal plate of ovipositor, with three configurations found in the known Brazilian species of Lestes: 1 (Lestes dichrostigma, Lestes pictus, Lestes tricolor and Lestes undulatus), 2 (Lestes forficula and Lestes paulistus) and 3 (Lestes minutus and Lestes demarcoi sp. nov.). Parts are named as follows: D—dorsal side, A—anterior side, V—ventral side, P—posterior side, PD—dorsal section of posterior side, PV—ventral section of posterior side, AP—Acute process (as defined in Westfall & May (1996)), VA—anterior section of ventral side and VP—posterior section of ventral side.

FIGURE 39. Basal plate of ovipositor (The basal plate was kept in color while the rest was converted to grayscale to facilitate the visualization of the differences between species): A—Lestes dichrostigma, B—Lestes forficula, C—Lestes minutus, D— Lestes paulistus, E—Lestes pictus, F—Lestes tricolor, G—Lestes undulatus, H—Lestes demarcoi sp. nov.

FIGURE 40. Pectoral color pattern: A—Lestes auritus (female), B—Lestes bipupillatus (female), C—Lestes dichrostigma (female), D—Lestes falcifer (male), E—Lestes fernandoi (male), F—Lestes forficula (female), G—Lestes jurzitzai (male), H— Lestes minutus (female), I—Lestes paulistus (female), J—Lestes pictus (female), K—Lestes quadristriatus (male), L—Lestes tricolor (female), M—Lestes undulatus (female), N—Lestes demarcoi sp. nov. (female).