Campylomyza convexa, Ham & Bae, 2025

Ham, Daseul & Bae, Yeon Jae, 2025, Taxonomic study of the genus Campylomyza Meigen (Diptera, Cecidomyiidae) in Korea with descriptions of seven new species, ZooKeys 1223, pp. 221-245 : 221-245

Campylomyza convexa sp. nov.

Fig. 3 D – F

Type material examined.

Korea • 1 ♂ (slide no. HDS-505 ); Gyeonggi-do, Namyangju-si, Wabu-eup, Dosim-gil, Korea University’s farm to practice (KUF); 2–8 Apr. 2017; D. Ham leg.; deposited in KU . Paratypes: Korea • 1 ♂ (slide no. HDS-504 ); same data and deposition as holotype • 2 ♂♂ (slides no. NIBRIN 0000857555 , NIBRIN 0000919405 ) KUF; 2–8 Apr. 2017; D. Ham leg.; deposited in NIBR .

Other material examined.

Korea • 4 ♂♂ (slides no. NIBRIN 0000992649 – NIBRIN 0000992652 ); KUF; 2–8 Apr. 2017; Y. J. Bae leg.; deposited in NIBR .

Diagnosis.

Campylomyza convexa sp. nov. is most similar to C. aemula (cf. Jaschhof and Jaschhof 2009: fig. 29 A – D), especially in having the rounded apical points on the tegmen, tapering posteriorly, the dorsal processes are broad basally, directed dorsolaterally with a strongly sclerotized triangular apex. However, C. convexa sp. nov. can be distinguished from C. aemula by following characteristics: 1) Gonostyli moderately convex apically, not excavated medially, broadly rounded apically, with small dorsomedial lobe (Fig. 3 E , ↓ 8); 2) Apical points of tegmen parallel-sided to rounded apically, longer than C. aemula ( Jaschhof and Jaschhof 2009: 102) ; 3) Mesal points of tegmen longer and narrower than in C. aemula (Fig. 3 E , ↓ 11); 4) Dorsal processes lacking sclerotized ridge, strongly sclerotized apically (Fig. 3 E , ↓ 10).

Measurements.

Male adult (holotype): Body length 1.417 mm. Wing length 1.639 mm. Hind leg coxa 0.105 mm; femur 0.555 mm; tibia 0.574 mm; tarsomere I 0.333 mm; tarsomere II 0.170 mm; tarsomere III 0.138 mm; tarsomere IV 0.082 mm; tarsomere V 0.065 mm.

Description.

Male adult (holotype). Head. Postocular bristles seven. Antenna with 12 flagellomeres. Neck of fourth antennal flagellomeres shorter than 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 nine setae. Wing length to width ratio 2.24. AntC ending beyond R 4 + 5 but before reaching M 4; ApicR 1 3.82 × length of Rs. CuA separated. Tarsomere I longer than tarsomere II. Tarsomere I longer than tarsomere II. Claws sickle-shaped, slightly toothed; empodia as long as claws, slightly broaden apically; pubescent. Terminalia. Tg 9 tapered towards apex with eight fine setae. Ventral bridge of gonocoxites long, ventral emargination relatively short and broad, U-shaped, dorsal transverse bridge broad, extending far beyond ventrobasal margin. Ventromedial portion of gonocoxites broad, slightly pronounced (Fig. 3 D , ↓ 7). Gonostyli curved anteroventrally, rounded apically, moderately convex apically with small dorsomedial lobe (Fig. 3 E , ↓ 8); setae distributed evenly in ventral view, denser towards apex in dorsal view. On tegmen, apical points long, parallel-sided to rounded apically, not lamellate, sclerotized (Fig. 3 F , ↓ 9); dorsal processes strongly sclerotized apically, directed dorsolaterally (Fig. 3 F , ↓ 10); mesal points weakly sclerotized, faint apically, directed anteriorly (Fig. 3 F , ↓ 11). Shoulders of tegmen inconspicuous. Transverse brace rib-shaped without extension (Fig. 3 F , ↓ 12). Parameral apodeme sclerotized, long, slightly shorter than half of tegmen (Fig. 3 F , ↓ 13). Ejaculatory apodeme of typical Campylomyza outline.

Etymology.

From the Latin word convexus, meaning ‘ a surface with rounded edges’, which refers to the rounded outline of the apex of the apical points on the tegmen.

Figures

Figure 3. Male morphology of Campylomyza angusta sp. nov., holotype A – C and Campylomyza convexa sp. nov., holotype D – F: A gonocoxites, ventral veiw B gonostylus, dorsal view C tegmen, dorsal view D gonocoxites, ventral veiw E gonostylus, dorsal view F tegmen, dorsal view. Scale bars: 0.05 mm.