Hister quadriguttatus Fabricius, 1798: 39 [terra typical not stated].
Hister lateralis Illiger, 1807: 36 [nom. nud.].
Saprinus quadriguttatus var. lateralis: Desbordes, 1919: 411.

Mazur and Ohara (2004)

Redescription. Body length (M: male, n=2; F: female, n=1): PPL, M 4.66­4.9, F 4.66; PEL, M 3.63­4.02, F 3.63; APW, M 1.23­1.32, F 1.23; PPW, M 3.14­3.19, F 3.04; PL, M 1.57­1.72, F 1.62; EL, M 2.25­2.40, F 2.21; EW, M 3.38, F 3.28; ProW, M 1.91­1.96, F 2.01; ProL, M 0.49, F 0.49; PyL, M 1.42­1.66, F 1.47; PTL, M 1.23, F 1.62; MSTL, M 1.27­1.37, F 1.23; MTTL, M 1.37­1.42, F 1.37. Body broadly oval, convex. Cuticle very strongly shiny with blue metallic lustre, elytron with two yellowish-orange maculae: one on epipleura and the second, oval, at apex. More frequently only the epipleural maculae present (var. lateralis). Scapus and funicle of antennae and tarsi rufopiceous.
Frontal stria weakly marked, interrupted anteriorly. Supraorbital stria thin but complete. Disc of front densely punctate, the punctures being separated by 0.5 ­ 1.0 times their diameter. Epistoma convex, more densely punctured. Labrum broadly and deeply depressed medially. Mandibles sparsely and finely punctulate.
Pronotal sides evenly arcuate and convergent forward on basal 3/4, thence strongly convergent apically. Apical angles obtuse. Marginal stria thin, lightly carinate apically and abbreviated on basal 1/5. Disc nearly smooth, very finely and sparsely punctulate, the punctures becoming denser, larger and deeper laterally; especially at antero-lateral part where the punctures are elongate and separated by 0.1 ­ 2.0 times their diameter. Area behind eyes strongly depressed. Pronotal epipleura concave, moderately covered with fine punctures, each of them bearing a short yellowish seta.
Epipleura of elytra even, very sparsely covered with fine, elongate punctures. Marginal epipleural stria fine but complete, prolonged on the elytral apex as an apical stria and united with sutural stria. Marginal elytral stria absent. Subhumeral stria wanting. Oblique humeral stria well impressed and present on basal 1/3. First to 3rd dorsal striae crenate, strongly impressed and present on about basal 1/2, the 3rd inwardly hamate basally. The 4th stria indistinct, composed of elongate punctures and marked as a short crenate line on mediobasal 1/4. Sutural stria complete and thin, finely crenate, hamate outwardly at base. Surface of elytra covered with elongate punctures, most densely at humeri and in intervals 1 ­ 4, where the punctures almost confluent, less densely punctured at apex and in scutellar area. All the interspace covered with alutaceous microsculpture.
Propygidium short, disc densely covered with punctures, most densely at apex. Pygidium moderately densely covered with oval punctures separated by 1 ­ 4 times their diameter, the punctation becoming finer apically, the apex finely punctulate.
Anterior margin of median portion of prosternum weakly rounded, nearly straight. Ventral disc of keel a little convex, descending anteriorly on 1/5, finely and rarely covered with punctures. Anterior marginal stria of keel strongly carinate and complete. Carinal striae carinate, complete and divergent posteriorly and anteriorly. Descending lateral stria complete, united with the carinals at 1/5 of their apical length.
Anterior margin of mesosternum slightly emarginate medially, its marginal stria distinctly carinate and complete. Disc sparsely clothed with very fine punctures. Meso-metasternal suture fine and thin, without a crenate line. Intercoxal disc of metasternum flat or depressed longitudinally along median line in male, median area very sparsely clothed with fine punctures. Lateral area along the lateral stria more densely covered with coarse (1 ­ 4), elongate punctures; interspace among punctures with fine, alutaceous microsculpture. Lateral metasternal stria carinate, extending obliquely and posteriorly, and present on basal 3/4. Lateral metasternal disc covered with large, elongate and deep punctures, the basal ones bearing with a short, yellow seta. Interspace among punctures with very fine, irregular and transverse, alutaceous microsculpture. Metepisternum densely covered with deep, longitudinal punctures; interspace among these punctures shining.
Intercoxal disc of 1st abdominal sternite nearly smooth, with some fine punctures at apex and more coarser ones laterally; the interspace here with very fine, irregular alutaceous microsculpture. Lateral stria well carinate and abbreviated on apical 1/4.
Protibia with 7 spinules at outer margin and with a row of spinules at apex. Mid- and hindtibiae with two rows of spinules at outer margin.
Genitalia. Male: apical part of 8th sternum narrow, and furnished with dense hairs. Ratio in length of parameres to basal piece about 2.86. Female: spermatheca as shown in Fig. 7C.

Specimens examined. Thailand: Pak Chong, Kaoyai National Park, 3.XI.1996, on dead fish, M. Kasagi, 1 male (MO-02076); Mae Sa Valley, Chiang Mai, 3 ­ 6.V.1994, K. Masumoto, 1 male (MO-02034); Ban Lon, Chaiyaphun Prov., 13, 14.III.2000, K. Masumoto, 1 female (MO-02077).