Setodes mongkondechsawati Malicky & Laudee, 2024

Laudee, Pongsak, Malicky, Hans, Takenaka, Masaki, Suwannarat, Nannaphat, Kong, Chamroeun, Vongswombath, Chanda & Tojo, Koji, 2024, Three new species of the genera Ceraclea Stephens and Setodes Rambur (Trichoptera: Leptoceridae) from Laos and Cambodia, Zootaxa 5471 (1), pp. 134-140 : 137

Setodes mongkondechsawati Malicky & Laudee n. sp.

Figs 3A–3D

Type material. Holotype male ( PSUNHM). Cambodia: Siem Reap Province, O Ta Khok, Phnom Kulen , 13°33’38”N, 104°07’43”E, ca. 260 m a.s.l., 17.vi.2022, leg. Pongsak Laudee. Paratypes. Same data as holotype, 1 male ( CHM) .

Etymology. The species is named for Mr. Vorawut Mongkondechsawat.

Description. Length of each male forewing 4.5 mm (N = 2); specimens in alcohol with head and thorax brown, abdomen yellowish.

Male genitalia ( Figs 3A–3D ). Segment IX in lateral view sac-like ventrally, subdorsal part fused with segment X, anterior margin convex, posterior margin deeply incised, ventral margin round ( Fig. 1A ); nearly hemispherical and truncate apically in ventral view ( Fig. 3C ). Setose preanal appendages semi-ellipsoidal in dorsal view and fused with tergum X ( Figs 3A ). Segment X with spiny apicodorsal process and pair of large apicolateral processes apically acute in lateral view; trapezoidal basally with spiny circular apicodorsal plate and with pair of apicolateral processes with round apices in dorsal view ( Fig. 2B ). In lateral view, inferior appendages each with two branches; lower branch crescentiform, posterior margin with tooth-like seta-bearing spines, upper part somewhat triangular; in ventral view, triangular with numerous setae, pointed apex ( Fig. 3C ). Phallus tubular, curved downward subbasally in lateral view; phallobase crescentiform; parameres slender and long, recurved downward; phallicata tubular, curved downward, apex round ( Fig. 3D ).

Diagnosis. The new species is in the group which includes Setodes akrura , S. abhirakta , S. nausithoos , and Setodes xangthevadaensis n. sp.. The genitalia of Setodes mongkondechsawati n. sp. are most similar to Setodes xangthevadaensis n. sp., but these can be easily distinguished by the dorsal view of the apicodorsal process of segment X, which is circular in Setodes mongkondechsawati n. sp. while the apicodorsal process in Setodes xangthevadaensis n. sp. is trifurcate.

Figures

FIGURES 1A–1E. Male genitalia of Ceraclea luangnamthaensis n. sp. 1A, left lateral; 1B, dorsal; 1C, ventral; 1D, phallus, left lateral; 1E, phallus, ventral. Pre = preanal appendage (paired), IX = segment IX, Inf = inferior appendage (paired), Par = paramere (paired).

FIGURES 2A–2D. Male genitalia of Setodes xangthevadaensis n. sp. 2A, left lateral; 2B, dorsal; and 2C, ventral; 2D, phallus, left lateral. Pre = preanal appendage (paired), IX = segment IX, Apid = Apicodorsal processes, Apil = apicolateral processes, Inf = inferior appendage (paired), Par = paramere (paired).

FIGURES 3A–3D. Male genitalia of Setodes mongkondechsawati n. sp. 3A, left lateral; 3B, dorsal; and 3C, ventral; 3D, phallus, left lateral. Pre = preanal appendage (paired), Apid = apicodorsal process, Apil = apicolateral process, Inf = inferior appendage (paired).