Amischa analis ( Gravenhorst, 1802 )

Lee, Seung-Gyu & Ahn, Kee-Jeong, 2023, Korean species of the genus Amischa Thomson (Coleoptera: Staphylinidae Aleocharinae), with a description of new species, Zootaxa 5230 (4), pp. 478-488 : 479-481

Amischa analis ( Gravenhorst, 1802)

( Figs. 1A , 2A–D )

Aleochara analis Gravenhorst, 1802: 76 .

Bolitochara evanescens Mannerheim, 1830: 81 .

Aleochara inquinula Stephens, 1832: 128 .

Aleochara foveolata Stephens, 1832: 128 .

Aleochara boleti Stephens, 1832: 129 .

Aleochara livipes Stephens, 1832: 131 .

Aleochara littoralis Stephens, 1832: 139 .

Bolitochara teres Runde, 1835: 30 .

Homalota haemorrhoidalis Heer, 1839: 332 .

Homalota nigriceps Heer, 1839: 333 .

Homalota contemta Heer, 1841: 593 .

Homalota fossigera Mannerheim, 1843: 77 .

Homalota tantilla Wollaston, 1854: 353 .

Amischa platycephala Thomson, 1860: 294 .

Homalota scorsicornis Hochhuth, 1872: 108 .

Amischa analis: G. Benick, 1967 a: 17 ; Benick & Lohse, 1974: 101; Yosii & Sawada, 1976: 113; Muona, 1990: 22; Assing, 2021: 30.

Amischa (Amischa) analis: Smetana, 2004: 370 ; Schülke & Smetana, 2015: 512.

Description. Length about 2.0 mm. Body ( Fig. 1A ) parallel–sided; surface slightly glossy and densely pubescent, with microsculpture and coarse punctures. Body reddish brown; antennae and legs slightly paler; head darker than other parts; each abdominal segment paler toward apex. Head. Subtriangular, with broad neck, approximately 1.0–1.1 times as wide as long, dilated basally, slightly narrower than pronotum; eyes relatively small and slightly prominent, about 0.8 times as long as temples; gular sutures moderately separated, more or less diverged basally; infraorbital carina absent; cervical carina absent. Antennae ( Fig. 2A ) moderately long and slender; antennomeres 1–3 elongate, 1 slightly longer than 2, 3 distinctly shorter than 2, 4–10 subquadrate to slightly transverse, 11 longer than wide and about as long as preceding two combined. Mouthparts. Labrum transverse, slightly emarginate in anterior margin, with ε-sensillum and about 8 macrosetae on each side of midline; epipharynx with several sensilla on each side of midline; α-sensillum short, about as long as ε-sensillum; β- and γ-sensilla reduced. Mandibles asymmetrical, short and subtriangular, decurved and pointed apically, about 1.6–1.7 times as long as basal width; right one with small internal tooth, internal margin slightly serrulate; prostheca developed, composited three portions, second portion slightly longer. Galea and lacinia of maxilla long and slender; lacinia composited seven spines in distal comb region, two isolated spines present; last spine of distal comb region and isolated spines close together; maxillary palpus elongate and pubescent; palpomere 1 smallest, 2 about 2.8–3.0 times as long as wide, 3 slightly longer than 2, about 2.5–2.7 times as long as wide, 4 short, filamentous sensilla slightly beyond basal half. Labium with ligula subtriangular, convex apically; prementum with two medial setae widely separated; two basal pores widely distant, about 5.0 times width of basal pore; few medial pseudopores, 1 setal pore and 2 real pores present on each side of midline; labial palpus elongate, with many setulae; palpomere 1 largest, about 1.6–1.8 times as long as wide, with γ-setula close to b-seta, 2 shortest, about 1.2–1.4 times as long as wide, 3 slightly shorter than 1, about 2.5–3.0 times as long as wide. Mentum trapezoidal, anterior margin slightly emarginate; v-seta minute, close to u-seta. Thorax. Pronotum approximately 1.2 times as wide as long, widest in apical third to half. Metanotal scutum with 1 long seta and about 1–2 short setae on each side of midline. Mesocoxae narrowly separated; mesoventral process distinctly pointed at apex, reaching to middle of mesocoxae; mesocoxal cavities unmargined. Elytra slightly longer and wider than pronotum, approximately 1.5–1.6 times as long as wide, pubescence directed posteriorly and postero-laterally, postero-lateral margin slightly sinuate; hind wings slightly reduced, flabellum composed of about 2 setose lobes. Legs slender and long, with dense pubescence and macrosetae; middle and hind tibiae with different length of two spurs at apex; tarsal formula 4-5-5, length ratio of tarsomeres 21:25:24:48 (front tarsus); 25:28:27:22:44 (middle tarsus); 41:40:35:29:48 (hind tarsus); one empodial seta present, shorter than claw. Abdomen. Parallel-sided; surface glossy and densely pubescent, with fine and imbricate microsculpture; macrochaetal arrangement of tergites II–VI 01-02-02-02-02; female tergite VIII ( Fig. 2B ) with 4 long macrosetae on each side of midline, posterior margin subtriangularly emarginate in median region; female sternite VIII ( Fig. 2C ) with about 8 long macrosetae on each side of midline; posterior margin subtruncate, with minute setae in median region. Spermatheca. Bursa distinctly elongate, with conical shaped umbilicus; duct coiled apically ( Fig. 2D ).

Type material. Lectotype, ♀, labeled as follows: ‘ Lectotypus Homalota analis gravenhorst ♀ V.I. Gusarov det. 1999, Amischa analis (grav.) ♀ V.I.Gusarov det. 1999’ [ MNHB]. Paralectotype, 3♀♀, ‘5449, analis gr., Paralectoty-pus Homalota analis gravenhorst ♀ Gusarov det. 1999, Amischa analis (grav.) ♀ V. I.Gusarov det. 1999’ [ MNHB]. Syntypes, 3 exx., ‘Type, Sharp Coll. 1905-313., nigriceps Heer. geneve., = analis grav, atheta analis gr. Dr. M. Cameron det., Homalota nig-riceps Heer genève”, ex trees. Castlenau, Types.’ [ BMNH]; 1 ex., ‘Sharp Coll. 1905- 313., Homalota haemorrhoidalis Heer genève” ex trees Castlenau, Types., Homalota haemorrhoidalis Heer genève’ [ BMNH].

Other material examined. SOUTH KOREA: Gangwon Prov.: 4♀♀ (one on slide), Yanggu-gun , Haean-my-eon, 16 viii 2009, Emily Martin, pitfall trap [ CNUIC] .

Distribution. Korea (South), trans-Palaearctic ( Cyprus, Iran, Kazakhstan, East Siberia, Far East, Turkey, Uzbekistan, Europe), North Africa ( Algeria, Madeira Archipelago, Tunisia), Nearctic region and New Zealand.

Remarks. Amischa analis is very similar to A. bifoveolata , but can be distinguished by the characters provided in the key and different shape of the spermatheca. This species is recorded here from Korea for the first time. Korean specimens are all females and were collected by pitfall trap in Gangwon-do province.

Figures

FIGURE 1. Habitus. A: Amischa analis (1.9 mm); B: A. bifoveolata (2.0 mm); C: A. koreana sp. nov. (1.8 mm).

FIGURE 2. Amischa analis. A: antenna; B: female abdominal tergite VIII (dorsal aspect); C: female abdominal sternite VIII (ventral aspect); D: spermatheca. Scales = 0.1 mm.