Homalota plana (Gyllenhal, 1810)

Kim, Yoon-Ho & Ahn, Kee-Jeong, 2014, Taxonomy of the genus Homalota Mannerheim in Korea (Coleoptera, Staphylinidae, Aleocharinae), ZooKeys 447, pp. 109-123: 111

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Homalota plana (Gyllenhal, 1810)


Taxon classification Animalia Coleoptera Staphylinidae

Homalota plana (Gyllenhal, 1810)  Figs 3, 21- 25

Aleochara plana  Gyllenhal, 1810: 402.

Homalota plana  : Mannerheim 1830: 73; Fenyes 1918: 87; Smetana 2004: 448.

Homalota plana  See Smetana (2004) for additional references.

Specimens examined.

KOREA: Cerjong, Hvanghe-pukto, IX 1971, leg. J. Pawlowski, Homalota plana  (Gyllenhal), det. G. Paśnik, 2000, Col ISEZ K-ow from box-no: KOR 1, Species name in box: Homalota plana  (2♂♂, 2♀♀) (ISEA); HUNGARY: Ócsa, Pest m, 30 X 1952, nyárfakéreg, alólrostálva, leg Kaszab Z., Homalota plana  (Gyll.) Det.: Adàm, 1987 (17 exx., 1♂, 1♀ on slides).


Body (Fig. 3) length about 2.4-3.3 mm. Body dorsoventrally flattened, subparallel-sided; subglossy, slightly pubescent; dark brown, antennae, elytra and legs brown. Head. Subquadrate, narrower than pronotum; eyes moderate in size, almost as long as tempora; antennomeres 4-10 slightly transverse. Mouthparts. Labrum transverse, 7 pairs of macrosetae present, sensilla of antero-medial sensory area distinct, depth and width moderately emarginated; α-sensillum with a setose process, β and γ minute and conical, ε with a short setose process, distinctly shorter than α, two lateral sensilla present on lateral margins of epipharynx, transverse row of sensory pores absent on basal region of epipharynx; right mandible with small median tooth, prostheca well developed, divided into 3 distinct area; maxillary palpomere 2 dilated distally, 3 distinctly dilated to apical third and then slightly convergent toward apex, 4 without small spine at apex; labium with ligula moderate and bifid at half, slightly shorter than labial palpomere 1, labial palpomere 1 slightly longer than 2, two medial setae contiguous on prementum, one laterally behind the other, median pseudopore field of prementum narrow and with pseudopores, mentum slightly emarginated in anterior margin. Thorax. Pronotum slightly transverse, about 1.2 times wider than long, widest at half, surface pubescent, directed postero-laterally; hypomeron visible in lateral aspect; prosternum with a median knob; elytra wider than pronotum, postero-laterally slightly sinuate; mesoventrite without longitudinal carina, mesoventral process narrow, apex narrowly round; metaventral process round at apex, distinctly shorter than mesoventral process; isthmus present; mesocoxae narrowly separated, tarsomere 1 as long as 2, with an empodial seta between tarsal claws. Abdomen. Tergites III–VI transversely impressed; tergite X with a medial setal patch subquadrate, with 4 macrosetae on each side. Genitalia. Spermatheca (Fig. 23) simple and elongate, tube slightly curved; median lobe (Fig. 24) elongate, bulbous at base, apical process slender and elongate, surface with some tubercles, flagellum well sclerotized and moderately long; paramere (Fig. 25) with apical lobe of paramerite subcylindrical, with four setae, two distinctly smaller than others, condylite subequal in length to apex of paramerite. Secondary sexual characteristics. Posterior margin of male tergite VII (Fig. 21) with a more or less distinct tubercle (occasionally missing); male tergite VIII (Fig. 22) impressed postero-medially, apex emarginated and without lateral process.


Korea (North). See Smetana (2004) for additional distribution.