Campylomyza aborigena Mamaev 1998

Campylomyza aborigena Mamaev, 1998 Fig. 1 C, 2 A – C Campylomyza aborigena Mamaev, 1998: 6. Specimens examined. Korea • 1 ♂ (slide no. NIBRIN 0000992639); Sobaek; 6 May – 6 Jun. 2019; D. Ham, S. Park leg.; deposited in NIBR • 2 ♂♂ (slides no. NIBRIN 0000992638, 19-38); Odae 2; 23 Apr. – 11 May 2019; D. Ham, S. Park leg.; deposited in NIBR. Diagnosis. Campylomyza aborigena closely resembles C. aemula Mamaev, 1998 (inferred from the illustration in Jaschhof and Jaschhof 2009) and shares the following characteristics: 1) Tegmen with lamellate (Fig. 2 C, ↓ 5), tapering apical points that are rounded and strongly sclerotized anteriorly, and weakly sclerotized posteriorly; 2) Large foliate dorsal processes (Fig. 2 C, ↓ 6) with narrower, sharp points; 3) Gonostyli tapering apically and curved anteroventrally with convex apex margins (Fig. 2 B). However, C. aborigena can be distinguished from C. aemula by the following characteristics: tegmen with parallel-sided apical points (Fig. 2 C, ↓ 5); dorsal processes large, broad basally, pointed apically with strongly sclerotized margin (Fig. 2 C, ↓ 6). Measurements. Male adult (Slide no. NIBRIN 0000992639): Body length 1.454 mm. Wing length 1.484 mm. Hind leg coxa 0.170 mm; femur 0.547 mm; tibia 0.551 mm; tarsomere I 0.307 mm; tarsomere II 0.164 mm; tarsomere III 0.130 mm; tarsomere IV 0.067 mm; tarsomere V 0.062 mm. Redescription. Male adult. Head. Postocular bristles four or five. Antenna with 12 flagellomeres. Neck of fourth antennal flagellomeres as long as node. Node with one complete and two incomplete crenulate whorls with sensory hairs, two incompletely collar-shaped sensilla distally. Palpus 4 - segmented; fourth segment longest. Thorax. Preepisternum with eight setae. Wing length to width ratio 2.44, AntC ending beyond R 4 + 5 but before reaching M 4; ApicR 1 3.23 × length of Rs; CuA separated (Fig. 1 C). Tarsomere I longer than tarsomere II. Claws sickle-shaped, toothed; empodia longer than claws; pubescent. Terminalia. Tg 9 slightly tapered towards apex (Fig. 2 A, ↓ 1). Gonocoxites emarginated broad U-shaped ventrally. (Fig. 2 A, ↓ 2); ventromedial portion swollen, pronounced (Fig. 2 A, ↓ 3); dorsal transverse bridge narrower to apex, extending far beyond ventrobasal margin (Fig. 2 A, ↓ 4). Gonostyli curved anteroventrally; apical margin strongly convex; medial portion excavated; setae becoming denser towards apex. On tegmen, apical points long, lamellate, rounded apically (Fig. 2 C, ↓ 5); dorsal processes spoon-shaped with hollow in the center and strongly sclerotized apex; directed anteriorly (Fig. 2 C, ↓ 6). Mesal processes short, sclerotized (Fig. 2 C, ↓ 7). Tegmen shoulders inconspicuous. Distribution. Russia (Primorsky), new to South Korea. Remarks. Campylomyza aborigena Mamaev, 1998 was originally described based on a single specimen collected in Far East Russia in 1964. Mamaev’s description was limited to just seven lines of text, without any accompanying drawings or photographs. However, thanks to the observations made by Dr. Mathias Jaschhof on the holotype specimen of C. aborigena in the Zoological Museum of Moscow State University in 2006, we now know that the Korean species is the same as the Russian C. aborigena. This is significant because it provides further evidence supporting the existence of C. aborigena, with the Korean finding being only the second record except for the holotype. Mamaev often described species based on a single specimen without proper illustration or depiction. Therefore, the discovery of this species in Korea and the possibility of obtaining additional specimens are of great importance for further supporting Mamaev’s species concept and advancing the taxonomy of mycophagous cecidomyiids.