Aloconota parviocularis Lee and Ahn, 2017

Lee, Seung-Gyu & Ahn, Kee-Jeong, 2017, A taxonomic study of Korean Aloconota Thomson (Coleoptera: Staphylinidae: Aleocharinae) with descriptions of five new species, Journal of Natural History 51 (25 - 26), pp. 1531-1556 : 1546-1550

Aloconota parviocularis Lee and Ahn sp. nov.

( Figure 1 (e), 8(a – f), 9(a))

Description

Length 2.3 – 2.7 mm. Body ( Figure 1 (e)) surface slightly glossy and densely pubescent with microsculpture. Body brown to dark brown; head and abdominal segments VI – VIII darker than other regions; legs yellowish brown. Head. Slightly elongate, approximately 1.1 times as long as wide, widest behind eyes, slightly narrower than pronotum; eyes small and slightly prominent, about 0.8 times as long as temples; gular sutures moderately separated, diverged basally; infraorbital carina absent; cervical carina incomplete. Antennae ( Figure 9 (a)) long and slender; antennomeres 1 – 3 elongate, 1 longest, 2 longer than 3, 4 – 8 slightly elongate, 9 – 10 about as long as wide, 11 shorter than preceding two combined. Mouthparts. Labrum ( Figure 8 (a)) transverse, emarginate in anterior margin, with Ε- sensillum and eight macrosetae on each side of midline; epipharynx ( Figure 8 (b)) with several sensilla, including two lateral sensory rows on each side of midline; α- sensillum completely reduced, β- and γ- sensilla very short, blunt at apex. Mandibles ( Figure 8 (c,d)) about 1.7 times as long as basal width; right one ( Figure 8 (c)) with small internal tooth, internal margin slightly serrulate; prostheca composed of three portions. Galea of maxilla ( Figure 8 (e)) elongate and decurved, about as long as stipes, filiform setae present on apex; lacinia composed of nine spines in distal comb region, isolated spines absent; maxillary palpomere 1 smallest and about 2.0 times as long as wide, 2 about 3.0 times as long as wide, 3 slightly longer than 2, about 2.8 – 3.0 times as long as wide, 4 digitiform, filamentous sensilla not reaching to basal half. Prementum ( Figure 8 (f)) with two basal pores separated, about 4.0 – 5.0 times width of basal pore; medial pseudopores, one setal pore and three or four real pores present on each side of midline; labial palpomere 1 largest, about 1.8 times as long as wide, with γ- setula located between α- setula and b-seta, distance from setula α to γ subequal to distance from seta b to setula γ, 2 shortest, about 1.7 – 1.8 times as long as wide, 3 parallel-sided and about as long as 1, about 3.5 – 4.0 times as long as wide. Mentum ( Figure 8 (f)) trapezoidal, anterior margin emarginate; v-seta very short. Thorax. Pronotum ( Figure 9 (b)) subquadrate, approximately 1.1 times as wide as long, widest in apical third, narrow apically, pubescence directed anterior and anteriorly in midline; hypomera fully visible in lateral aspect. Metanotal scutum with one long seta and about five to seven short setae on each side of midline. Mesoventral process pointed at apex, longer than metaventral process; isthmus longer than metaventral process; length ratio of mesoventral process, isthmus and metaventral process about 6: 5: 2. Elytra slightly longer and wider than pronotum; elytron approximately 1.7 – 1.8 times as long as wide, pubescence directed postero-laterally; postero-lateral margin almost straight; hind wings fully developed, flabellum composed of about five to seven setose lobes. Legs. Slender and long, with pubescence and macrosetae; tibiae with two spurs at apex; tarsal formula 4-5-5, length ratio of tarsomeres 23: 29: 29: 72 (protarsus); 35: 35: 35: 32: 69 (mesotarsus); 57: 44: 42: 40: 80 (metatarsus). Abdomen. Parallelsided; surface glossy and densely pubescent, with imbricate microsculpture; macrochaetal arrangement of tergites II – VI 01-21-21-21-13; male tergite VII ( Figure 9 (c)) with longitudinal tubercles in postero-median region, VIII with four macrosetae on each side of midline, posterior margin ( Figure 9 (d)) with two round processes at middle; male sternite VIII with seven macrosetae on each side of midline, posterior margin convex, slightly round, with long marginal setae; posterior margin of female tergite VIII broadly round; posterior margin of female sternite VIII broadly round, with long marginal setae, minute setae present in median region. Aedeagus. Median lobe ( Figure 9 (e,f)) narrowly ovate, apical process narrow and pointed apically in ventral aspect; apical process slightly bent in lateral aspect. Apical lobe of paramerites ( Figure 9 (g)) with four setae; a-seta longest, the other setae short and subequal in length, c- and d-setae positioned apically. Spermatheca. S-shaped; bursa large, with large and conical-shaped umbilicus; duct thick ( Figure 9 (h)).

Type material

Holotype, ♂, labelled as follows: ‘ KOREA: Gyeongnam Prov., Hamyang-gun, Macheonmyeon, Mt. Jirisan , Yongso-valley, N 35°23′03.4″E 127°41′53.2″ 410m, 14 VI 2010, KJ Ahn, JG Lee, TK Kim, IS Yoo, YH Kim, JH Song, SG Lee, flood debris ’ ( CNUIC) . Paratypes, 7 exx. (total): 4 exx., ‘ KOREA: Gangwon Prov., Hongcheron-gun , Nae-myeon, Gangwon-ri, Sambong Natural Recreation Forest, N 37x ., ‘ KOR E128 °27 ʹ46˝, 11 V 2007, KJ Ahn, TK Kim, YH Kim, ex leaf litter ’ ( CNUIC); 3 exx ., ‘ KOREA: Chungnam Prov., Geumsan-gun, Mt . Daedunsan, 25 V 2001, S.-J. Park, M.-J. Jeon, H.-J. Yun, ex sifting ’ ( CNUIC) .

Material examined

SOUTH KOREA: Chungnam Prov.: 3 exx ., Geumsan-gun, Mt Daedunsan , 24 May 2001, SJ Park, MJ Jeon, HJ Yun, sifting; 3 exx ., same data as former except for ‘ 21 v 2001 SJ Park ’; 1 ex ., Gongju-si, Gyeryongsan, Gapsa , 19 August 2006, SJ Park, YH Kim, near stream . Gangwon Prov.: 5 exx. (in 95% ethanol), Chuncheon-si, Gajeong-dong, Mt Bonghwasan , 17 September 2008, TK Kim, near stream; 2 exx. (in 95% ethanol) , Injegun, Sangnam-myeon, Misan-ri Mt Bangtaesan , 37°52′3.2″ N, 128°22′9.6″ E, 640 m, 24 June 2009, TK Kim, under stones near stream; 1 ex . (in 95% ethanol), Pyeongchanggun, Jinbu-myeon, Mt Odaesan , Sangwonsa , 31 May 2008, TK Kim, under stone near stream; 37°47.074 ʹ N, 128°33.735 ʹ E, 15 May 2006, TK Kim, HW Kim, near stream; 1 ex ., same data as former except for ‘ 31 v 2008, N 37°47.074 ʹ E 128°33.735 ʹ, 15 v 2006, TK Kim, HW Kim, near stream ’; 1 ex ., Taebaek-si, So-dong, Mt Taebaeksan , 37°6 ʹ 52 “ N, 128° 56 ʹ 51.1 “ E, 3 September 2006, SJ Park, TK Kim, under stones . Gyeongbuk Prov.: 1 ex . , Bonghwa-gun Mt Cheongryangsan , 36°46 ʹ 37 “ N, 128°53 ʹ 53 “ E, 30 July 2007, KJ Ahn, DH Lee, HW Kim, JH Song, leaf litter; 1 ex . , Cheongsong-gun, Budong-myeon, Sangui-ri , Mt Juwangsan , 13 June 2006, SJ Park, YH Kim, near stream. Gyeongnam Prov.: 3 exx. (in 95% ethanol), Hamyang-gun, Macheon-myeon, Mt Jirisan , Hongdae-fall , 35°20′44.2″ N, 127°40′59.7″ E, 740 m, 15 June 2010, JH Song, SG Lee, leaf litter . Jeonnam Prov.: 8 exx., Gurye-gun, Sandong-myeon, Mt Jirisan , Simwon-fall , 35°19′24.8″ N, 127°31′34.6″ E, 850 m, 17 June 2010, KJ Ahn, JG Lee, TK Kim, IS Yoo, YH Kim, JH Song, SG Lee, leaf litters; 1 ex ., Gwangju-si, Seokgok-dong, Mt Mudeungsan , Pungam-reservoir , 21 April 2006, KJ Ahn, near stream .

Distribution

Korea (South).

Remarks

This species is similar to A. tuberculata sp. nov., but can be distinguished by the characters provided in the key and different shape and structure of the aedeagus and spermatheca.

Etymology

Named derived from the Latin parviocularis meaning ‘ small eye ’.

Figures

Figure 1. Habitus (a) Aloconota brunnea sp. nov., 2.3 mm; (b) Aloconota elongata, 4.0 mm; (c) Aloconota hydrosmectoides, 2.7 mm; (d) Aloconota impressa sp. nov., 3.0 mm; (e) Aloconota parviocularis sp. nov., 2.5 mm; (f) Aloconota sulcifrons, 4.5 mm; (g) Aloconota tuberculata sp. nov., 2.8 mm.

Figure 8. Mouthparts of Aloconota parviocularis sp. nov. (a) Labrum (dorsal aspect); (b) epipharynx (ventral aspect); (c) right mandible (dorsal aspect); (d) left mandible (ventral aspect); (e) left maxilla (ventral aspect); (f) labium (ventral aspect).

Figure 9. Aloconota parviocularis sp. nov. (a) Antenna; (b) pronotum; (c) male abdominal tergite VII (dorsal aspect); (d) male abdominal tergite VIII (dorsal aspect); (e) median lobe of aedeagus (lateral aspect); (f) median lobe of aedeagus (ventral aspect); (g) paramere (lateral aspect); (h) spermatheca. Scales = 0.1 mm.