Archaeotinodes rossica Melnitsky & Ivanov

Melnitsky, Stanislav I. & Ivanov, Vladimir D., 2013, Three new caddisflies species of the fossil genus Archaeotinodes (Insecta: Trichoptera: Ecnomidae) from the Baltic Amber, Zootaxa 3635 (3), pp. 261-268 : 265-266

Archaeotinodes rossica Melnitsky & Ivanov , new species

Figs. 5–6 .

Description ( Fig. 5–6 ). Body and legs dark brown, head and wings light brown. Antennae, palpi and hairs on head, thorax, and wings yellow. Antennae shorter than forewings. Spur formula 3.4.4. Measurements: body length 4 mm; forewing length 4.7 mm.

Male genitalia. Gonopods oblong, bilobed, consisted of dorsal and ventral lobes; dorsal lobe large, irregularly oval, with convex dorsal margin in lateral view; narrowed at base and gradually widening towards apical part in ventral view. Ventral lobe of each gonopod appearing as long, spine-shaped process shorter than dorsal lobe. Aedeagus wide, shorter than dorsal lobes of lower appendages. Cerci long, gradually expanding to apex. Apical part of each preanal appendage looking like oval blade, somewhat curved downward.

Comparison. This species is similar to Archaeotinodes lanceolata Ulmer, 1912 , but has acute ventral branches of the gonopods and apically rounded dorsal lobes of the gonopods. Contrary to A. lanceolata , the new species has no apical spines on the dorsal lobes of the gonopods.

Holotype male. PIN, № 364/681, amber, Eocene.

Etymology. From the Latin rossica - Russian.

Figures

FIGURE 5. Archaeotinodes rossica sp. nov., holotype PIN, № 364 / 681.

FIGURE 6. Archaeotinodes rossica sp. nov., holotype PIN, № 364 / 681, male genitalia. A, lateral; B, ventral. Scale bar = 0.1 mm. Abbreviations: DL—dorsal lobe of lower appendage, PA—preanal appendage, VL—ventral lobe of lower appendage.