Kaluginia lebetiformis koreana Makarchenko, 2020

Makarchenko, E. A., Rumyantseva, A. Yu. & Yavorskaya, N. M., 2020, New data on taxonomy and distribution of Kaluginia lebetiformis Makarchenko, 1987 (Diptera: Chironomidae, Diamesinae) from East Asia, Far Eastern Entomologist 399, pp. 19-28 : 24-25

Kaluginia lebetiformis koreana Makarchenko , subsp. n.

http://zoobank.org/NomenclaturalActs/ 3D03C35E-24AF-4831-BAAB-6C5029D563E4

Figs 4–5 , 9

Kaluginia lebetiformis Makarchenko, 1987 ; Makarchenko et al., 2018: 28 (partly), Figs 1–3, 5–10 .

MATERIAL EXAMINED. Holotype: 1♂, South Korea: Gyeongi-do , Gapyeong-gun,

Gapyeongcheon, Bukhan River, Han River basin, 15. IV 2016 (Light trap), 37°58’ N, 36.4”

127°26’35.5” E, leg. Y. Bae. Paratypes: 1♂, the same data as holotype, leg. Y. Bae ; 1♂, the same data as holotype, except 22.V 2014 (Light trap), leg. H. Kang.

DESCRIPTION. Male imago (n=3). Total length 2.3–2.6 mm. Total length/wing length

1.03–1.10. Total coloration brown to dark-brown; antepronotum light yellow; methonotum yellowish, with brown stripes; legs spotted: basal 2/3 of femur yellowish, distal 1/3 brown;

tibia in basal and apical parts brown and yellowish in middle part; basal 2/3 of ta 1 yellowish and distal 1/3 brown; ta 2 –ta 5 brown (Makarchenko et al., 2018, Fig. 1 ).

Head. Temporal setae (from one side) including 3–4 frontals, 7 orbitals and 7–10 verti-

cals. Clypeus with 17–26 setae. Palpomere length (μm): 28–48, 60–64, 104–120, 132–140,

212–220. Head width/palpal length 0.92–1.0. Antenna with 7 flagellomeres and reduced plume of setae 48–68 μm long (Makarchenko et al., 2018, Fig. 2 ). Flagellomeres length

(μm): 52–56, 24, 28, 24–28, 28–32, 28–32, 68–84; terminal flagellomere with 2 subapical setae 60–76 μm long; scape with 3 setae 28–36 μm long. AR 0.34–0.46.

Hypopygium ( Figs 4–5 , 9 ). Tergite IX with anal point which like small rounded protuberance, and with 29–42 setae, 12–20 μm long; anal-lateral corners not or slightly elongated; laterosternite IX with 15–20 setae (from one side), 44–48 μm long. Transverse sternapodeme high, almost trapezoidal, 128–132 μm long and 148–152 μm wide in basal part, 88–100 μm wide in subapical part, with rounded apex. Gonocoxite 308–310μm long.

Basal lobe of gonocoxite is various shapes and depends on its position; in the inner half with microtrichia, along the outer margin with short setae; inferior volsella as in Fig. 5 , covered by setae 40–60 μm long. Gonostylus 156 μm long, scoop-shaped; inner lobe along the margin with 5–9 megasetae 12–16 μm long and one subterminal tooth; outer lobe widely triangular, inner margin of which with strong setae 20–24 μm long, outer half with thinner and longer setae 56–72 μm long. HR 1.97.

DIAGNOSTIC CHARACTERS. The adult male of K. lebetiformis koreana subsp. n. is separated from K. lebetiformis lebetiformis mainly in the features of hypopygium, namely anal point like small rounded protuberance, anal-lateral corners of tergite IX not or slightly elongated ( Fig. 9 ), while male of K. lebetiformis lebetiformis with round triangular dark anal point and anal lateral corners of tergite IX elongated as narrow lobes to back ( Figs 6–8 ). A more detailed comparative characteristic of these subspecies is given in Table 1, as well as in the results of DNA barcoding ( Fig. 10 ).

DISTRIBUTION. This subspecies is known only from South Korea.

ETYMOLOGY. The subspecies is named as koreana after the type locality in South

Korea.

Figures

Figs 1–6. Adult males of Kaluginia lebetiformis lebetiformis Makarchenko (1–3) and K.

Figs 6–9. Posterior part of tergite IX of adult males Kaluginia lebetiformis lebetiformis Makarchenko from Amur River basin (6–7), South Sakhalin [holotype] (8) and K. lebetiformis

Fig. 10. Bayesian COI mtDNA (658 bp) phylogeny of the tribe Boreoheptagyiini from 7