Description

Body (Fig. 1) length 1.3–1.7 mm. Body slightly flattened, broadest at posterior margin of elytra, abdomen convergent to more or less obtusely pointed; pubescent, macrosetae small, difficult to distinguish from microsetae; brown, head and abdominal tergites III–VI dark brown, antennomeres 1–3 and legs light brown.

Head. Transverse, narrower than pronotum, eyes moderate in size, about as long as tempora; infraorbital carina well developed, complete; neck absent; antennomere 4 subquadrate, 5–10 transverse, slightly incrassate toward.

Mouthparts. Labrum (Fig. 2) transverse, 7 pairs of macrosetae present, sensilia of anteromedial sensory area distinct, shallow and narrowly emarginated, α-sensillum with short setose process, β and γ minute and conical, ε with short setose process, almost as long as α, three lateral sensillae present on lateral margins of epipharynx, transverse row of sensory pores absent on basal region of epipharynx; right mandible (Fig. 3) with distinct median tooth, prostheca well developed, divided into two distinct areas, condylar molar patch narrow, composed of toothlike structures; maxillary palpomeres (Fig. 4) 2–3 dilated distally, 4 with a small spine at apex; labium (Fig. 5) with ligula protruded, parallel-sided, divided in apical three-fourths, almost as long as labial palpomere 1, labial palpus with two palpomeres, palpomere 1 longer than 2, one medial seta present on prementum, medial pseudopore field of prementum narrow and without pseudopore, mentum not emarginated in anterior margin.

Thorax. Pronotum markedly transverse, about 1.7 times wider than long, widest at half, surface slightly pubescent; hypomeron not visible in lateral aspect; elytra wider than pronoum, postero-laterally sinuate; mesoventrite (Fig. 6) with longitudinal carina, extended to ¾ of mesoventral process, mesoventral process extended to ¾ of coxal cavities, metaventral process short and truncate at apex, distinctly shorter than mesoventral process; isthmus absent; mesocoxae broadly separated; tarsomere 1 of front and middle legs as long as 2, 1 about 1.5 times longer than 2 in hind leg, with an empodial seta between tarsal claws.

Abdomen. Tergites III–V slightly transversely impressed; tergite X with five to seven macrosetae on each side.

Genitalia. Spermatheca (Fig. 8) simple and round at base; median lobe (Figs. 9–10) slightly bulbous at base, elongate, apical process of median lobe short and not bifid, flagellum well sclerotized and developed, moderate in length and curved subapically; paramere (Fig. 11) with apical lobe of paramerite broad, subcylindrical with four setae, 3 distinct and elongate, 1 very small, condylite subequal in length to apex of paramerite.

Secondary sexual characteristics. Males: posterior margin of abdominal tergite VIII (Fig. 7) with broad semicircular emargination medially.

Type Material

Holotype, male, labeled as follows: KOREA: Chungnam Prov., Cheonan City, Ibjangmyeon, Hodang-ri, 27-VI-2006, N 36° 53′ 08.3″ E 127° 15′ 34.7″, 210 m, SJ Park, ex mushrooms on log; Holotype, Agaricomorpha ashei Kim and Ahn, Desig. Y.-H. Kim and K.-J. Ahn 2014. Paratypes, 9d ♂♂♀♀ (3 ♂ on slides), same data as holotype.

Distribution

Korea (South).

Etymology

Named after the late James S. Ashe in honor of his research on the subtribe Gyrophaenina.

1. Male tergite VII with a pair of very small tubercles; median lobe with flagellum elongate and whip-like A. apacheana

—. Male tergite VII without tubercle; medial lobe with flagellum short 2

2. Body typically dark brown; male tergite VIII with a median tubercle A. websteri

—. Body typically reddish brown to brown; male tergite VIII without tubercle A. ashei sp. nov.