Acrotona (Acrotona) koreana Lee & Ahn, 2018
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publication ID |
https://doi.org/ 10.11646/zootaxa.4418.3.3 |
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publication LSID |
lsid:zoobank.org:pub:959FE164-2912-42F8-B44E-52DC26B85C5A |
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DOI |
https://doi.org/10.5281/zenodo.3799620 |
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persistent identifier |
https://treatment.plazi.org/id/B14087BB-FFD2-5B49-FF30-FF30FC72FA80 |
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treatment provided by |
Plazi |
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scientific name |
Acrotona (Acrotona) koreana Lee & Ahn |
| status |
sp. nov. |
Acrotona (Acrotona) koreana Lee & Ahn View in CoL , sp. nov.
( Figs. 1B View FIGURE 1 , 2 View FIGURE 2 A–F, 3A–H, 4A–H)
Description. Length about 2.0 mm. Body ( Fig. 1B View FIGURE 1 ) surface fairly glossy and densely pubescent, with fine microsculpture. Body reddish yellow to reddish brown; head almost black; abdominal segments V–VII darker than other parts. Head. Transverse ( Fig. 3A View FIGURE 3 ), approximately 1.2 times as wide as long, widest across eyes, distinctly narrower than pronotum; eyes very large, about 2.0 times as long as temples; gular sutures moderately separated, diverged basally; cervical carina complete. Antennae ( Fig. 3B View FIGURE 3 ) long and slender; antennomeres 1–3 elongate, 2 slightly longer than 3, 4–10 subquadrate to transverse, 11 longest, about as long as preceding two combined. Mouthparts. Labrum ( Fig. 2A View FIGURE 2 ) transverse, slightly emarginate in anterior margin, with ε-sensillum and about nine macrosetae on each side of midline; epipharynx ( Fig. 2B View FIGURE 2 ) with several sensilla, including two lateral sensory rows on each side of midline; α-sensillum long and setaceous, more than 2.0 times as long as ε-sensillum, β- and γsensilla very short. Mandibles ( Figs. 2 View FIGURE 2 C–D) about 1.7 times as long as basal width; right one ( Fig. 2C View FIGURE 2 ) with small internal tooth; prostheca composed of three portions, second portion longer. Galea and lacinia of maxilla ( Fig. 2E View FIGURE 2 ) long and slender; lacinia composed of seven spines in distal comb region, two isolated spines present; maxillary palpomere 2 about 2.6–2.8 times as long as wide, 3 about 2.3–2.5 times as long as wide, 4 digitiform, filamentous sensilla not reaching to basal half. Labium ( Fig. 2F View FIGURE 2 ) with ligula long and slender, divided into two lobes in basal half; prementum with two medial setae narrowly separated; two basal pores close together, about 1.0 times width of basal pore; medial pseudopores absent; several lateral pseudopores, 1 setal pore and 2 real pores present on each side of midline; labial palpomere 1 about 1.3–1.5 times as long as wide, γ-setula contiguous with f-seta, 2 shortest, about 1.2–1.3 times as long as wide, 3 parallel-sided and about as long as 1, about 3.0–3.5 times as long as wide. Mentum ( Fig. 2F View FIGURE 2 ) trapezoidal, anterior margin emarginate; v-seta very long, slightly closer to u-seta than w-seta. Thorax. Pronotum ( Fig. 3C View FIGURE 3 ) approximately 1.4 times as wide as long, widest at basal third to half; pubescence directed posteriorly in midline. Metanotal scutum ( Fig. 3E View FIGURE 3 ) with one long seta and about one to four short setae on each side of midline. Mesocoxal cavities narrowly separated; mesoventral process ( Fig. 3F View FIGURE 3 ) slightly pointed at apex, distinctly longer than isthmus and metaventral process combined. Elytra longer and slightly wider than pronotum; elytron ( Fig. 3H View FIGURE 3 ) approximately 1.4–1.5 times as long as wide, postero-lateral margin sinuate; pubescence directed posterior and postero-laterally; hind wings fully developed, flabellum ( Fig. 3E View FIGURE 3 ) composed of about six long setose lobes. Legs. Slender and long, with pubescence and macrosetae; meso- and metatibiae with different length of two spurs at apex; length ratio of tarsomeres 19:24:22:52 (protarsus); 27:28:29:27:50 (mesotarsus); 34:36:35:33:60 (metatarsus); one empodial seta present, shorter than claw. Abdomen. Widest in segments III–IV; surface fairly glossy and densely pubescent, fine and transverse microsculpture; conspicuous macrosetae present in lateral regions; macrochaetal arrangement of tergites II–VI 01-02-12-13-13; tergite VII subquadrate; male tergite VIII ( Fig. 4A View FIGURE 4 ) with four macrosetae on each side of midline, posterior margin truncate; male sternite VIII ( Fig. 4B View FIGURE 4 ) with seven macrosetae on each side of midline, posterior margin slightly convex; posterior margin of female tergite VIII ( Fig. 4C View FIGURE 4 ) similar to male’s; female sternite VIII ( Fig. 4D View FIGURE 4 ) with six macrosetae on each side of midline, posterior margin broadly round, with long marginal setae and in median region. Aedeagus. Median lobe ( Figs. 4 View FIGURE 4 E–F) narrowly ovate and widest in basal fourth, narrow apically and blunt at apex in ventral aspect; apical process elongate and almost straight in lateral aspect. Apical lobe of paramerites ( Fig. 4G View FIGURE 4 ) elongate and parallel-sided, with four setae; a-seta slightly longer than other setae positioned apically; b- and d-setae subequal in length; c-seta slightly shorter. Spermatheca. Bursa round, without umbilicus; duct relatively slender, coiled and twisted at apex ( Fig. 4H View FIGURE 4 ).
Type material. Holotype, labeled as follows: ‘ KOREA: Chungnam Prov., Daejeon-si, Seo-gu, Jangan-dong , Mt. Jangtaesan , N36°13'01.0" E127°20'34.6" 222 m, 29 V 2014, SG Lee, JS Lee, leaf litter’ GoogleMaps . Paratypes, 6 exx. (two on slide), same data as holotype.
Distribution. Korea (South).
Remarks. This species is similar to A. lutulenata (Sharp) , but can be distinguished by the characters provided in the key and different shape and structure of the aedeagus and spermatheca.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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