<p class="ZootaxaTitle"><strong>Larvae and adults of Vietnamese species of <em>Drepanocentron</em> and <em>Hydromanicus</em> (Trichoptera: Xiphocentronidae, Hydropsychidae)</strong></p>

Abstract

Genetic sequencing (with mtCOI) was used to associate larvae with two new Vietnamese caddisfly (Trichoptera) species from Bach Mã National Park, Hydromanicus calyx n. sp. (Hydropsychidae) and Drepanocentron dentatum n. sp. (Xiphocentronidae). Adult Drepanocentron dentatum n. sp. is distinguishable by the toothy dorsal margin of the male inferior appendages; the most similar species, D. vercaius, has teeth on the ventral, but not the dorsal margins of the inferior appendages. The larva of D. dentatum is fully described herein, the first larva to be described in the genus Drepanocentron; it can be separated from the other two known xiphocentronid larvae (Xiphocentron messapus and Cnodocentron yavapai) by the smooth, thin mesal margin of each mandible. Adult Hydromanicus calyx n. sp. is distinguishable by the cupped apices of the male harpagones; this character is absent in morphologically similar species (H. nieuwenhuisi, H. abiud, and H. serubabel). The larva of H. calyx is morphologically most similar to that of H. inferior, but can be distinguished by the presence of faint muscle scars interrupting the lateral margins of the stridulatory areas on the venter of the head.

The First Report of the Genera Abaria and Drepanocentron (Trichoptera: Xiphocentronidae) from China, with Descriptions of Two New Species

“…As currently defined, the family Xiphocentronidae is a small family of seven genera with 186 species [7][8][9], including Abaria Mosely (39 species, from the Oriental, Afrotropical, and Western Palearctic Regions), Cnodocentron Schmid (13 species, from the southwestern United States of America, northern South America, India, and Southeast Asia), Drepanocentron Schmid (42 species, all from the Oriental Region), Machairocentron Schmid (6 species, from Central America and northern South America), Melanotrichia Ulmer (30 species, from the eastern Palearctic and Oriental regions), Proxiphocentron Schmid (5 species, from Southeast Asia), and Xiphocentron Brauer (51 species, widespread in the Neotropical region, extending into Mexico, the southwestern USA, and the Greater Antilles) [5]. Most of them are distributed in the Oriental region (118 species) and the Neotropical region (59 species).…”

“…Based on the forewing venation, structures of the inferior appendages, and of the aedeagus, Schmid [17] divided his 17 Indian new species into 2 species groups, i.e., druhyu and citrangoda species groups. Later, 24 species of the genus were reported by various authors, among them, 1 from Indonesia by Oláh and Malicky [23], 4 from Malaysia by Oláh [24] and Malicky [15,25], 5 from the Philippines by Mey [18,19,26], 3 from Thailand by Malicky and Chantaramongkol [13,15], and 12 from Vietnam by Malicky [15], Oláh, and Johanson [13] and Genco et al [9]. Thus far, all 42 species of the genus Drepanocentron are exclusively distributed in the Oriental region.…”