Xotidium meridionale Ogawa & Loebl

Ogawa, Ryo & Loebl, Ivan, 2016, A review of the genus Xotidium Loebl, 1992 (Coleoptera, Staphylinidae, Scaphidiinae), with descriptions of five new species, Deutsche Entomologische Zeitschrift 63 (1), pp. 155-169 : 161-162

Taxon classification Animalia Coleoptera Staphylinidae

Xotidium meridionale Ogawa & Loebl sp. n. Figs 5d, 6j, 8e, f

Type material.

Holotype, 1♂, Mt. Lompobatang, Malino, S. Sulawesi, alt. ca. 1700m, 5°23 ’44.20” N, 119°55 ’22.27” E, 20. I. 2011, R. Ogawa leg. (MZBI).

Etymology.

The species epithet is from the Latin meridionale meaning southern, referring to Lompobatang located at the southernmost Sulawesi.

Description

(male). Dorsal and ventral surface almost dark reddish-brown to brown (Fig. 5d). Antennae almost yellowish-brown, but antennomeres III–XI blackish. Femora from apical sixth to base darker than tibiae; tibiae reddish-brown to brown; tarsi paler than tibiae. Head, pronotum, and elytra sparsely and finely pubescent.

Head with eye width almost the same as interocular distance. Punctuation sparse and fine.

Pronotum wider than long. Punctuation sparse and fine, as on head. Scutellum with slightly exposed apex.

Elytra longer than wide, widest at basal sixth, lateral margins sharply narrowed apically, minutely serrate at inner part of posterior margin. Punctuation fine and sparse as on pronotum. Sutural striae interrupted at basal third.

Hypomeron and lateral portion of mesoventrite smooth. Lateral portion of metaventrite finely and sparsely punctate. Metanepisternum about four times as long as wide, without longitudinal line. Mesepimeron concealed. Metacoxa about six times as wide as metacoxal process. Ventrite I sparsely and finely punctate.

Protarsomere V about three times as long as each I–IV. Mesotarsomere I about twice as long as each II and III; V about twice as long as IV. Metatarsomere I about 2.5 times as long as each II and III; V about three times as long as IV.

Protarsomeres I–III possibly with tenent setae, but invisible at × 80 magnification, not enlarged. Aedeagus 0.54 mm long; parameres symmetrical, with moderately widened apical section shorter than third of total parameral length; internal sac with a sinuate and very long flagellum (longer than aedeagus), basally widened and bent (Fig. 8f).

Female. Unknown.

Measurements

(n = 1). Length (PL+EL): 1.43 mm, PW: 0.81 mm, EW: 0.87 mm, HW: 0.34 mm, ID: 0.11mm, PL/PW: 0.72, EL/EW: 0.98. Approximate ratio of each antennal segment in length (width) (n = 1): II 1.5 (0.6): III 1.0 (0.3): IV 1.2 (0.3): V 1.3 (0.3): VI 1.5 (0.3): VII 1.8 (0.4): VIII 1.7 (0.3): IX 2.0 (0.5): X 1.9 (0.5): XI 2.1 (0.7).

Distribution.

Indonesia: southern Sulawesi.

Remarks.

This species is similar to Xotidium smetanai sp. n. in lacking sutural striae and Xotidium tubuliferum Löbl in the long sclerite as flagellum of male genitalia, but it is easily distinguished from them by the body color and the widened apical section of parameres.