Cycreon sculpturatus Orchymont, 1919

Shatrovskiy, Alexander, 2017, A new species of Cycreon d’Orchymont, 1919 from Singapore (Coleoptera: Hydrophilidae: Megasternini), Zootaxa 4317 (3), pp. 588-592 : 589

Cycreon sculpturatus Orchymont, 1919 ( Figs. 1–2 , 5–12 , 25–26 )

Type material. Holotype: INDONESIA: Sumatra: Palembang ( MHNB). 1 ♀ ( Fig. 26 ).

Diagnosis. Smaller in size than C. armandi sp. nov.; having on dorsal surface of head and pronotum dotty microsculpture consisting of the completely ring-like and densely situated punctures; clypeus shorter, scutellum shorter; meso- and metatibiae straight.

Description. Body size: 2.6 mm long, 1.6 mm wide. Upper and lower surface with microsculpture and not brightly shining ( Figs. 1–2 ). Punctures of head and pronotum shallow, large in size (about 0,0 2 mm), disposed closer to each other than their diameter ( Fig. 8 ). Clypeus short: about 4× width as long, lateral edges obliqued ( Fig. 9 ); its middle portion of the apex is not elevated ( Fig. 5 ). Pronotum evenly rounded in base ( Fig. 6 ), with reduced medial fovea and two lateral foveae near the base (probably, this character may be variable). Scutellar shield short: its length is about the width of the base. Meso- and metatibiae straight ( Figs. 11–12 ). Female genital view—Fig. 25.

Figures

FIGURES 1 – 4. Habitus: 1 – 2: Cycreon sculpturatus Orchymont, 1919, holotype (1: dorsal view, 2: ventral view), 3 – 4: Cycreon armandi Shatrovskiy, sp. nov., holotype (3: dorsal view, 4: ventral view).

FIGURES 5 – 12. Cycreon sculpturatus Orchymont, 1919, holotype: 5: clypeus in lateral view, 6: pronotum, 7: prosternum with indistinct antennal grooves, 8: microsculpture of pronotum, 9: clypeus, 10: protibia, 11 – 12: metatibia (11 — in view from below, 12 — in view from above).

FIGURES 22 – 25. Genitalia of Cycreon spp: 22 – 24: male C. armandi Shatrovskiy, sp. nov., holotype (22: sternite 9, 23: parameres, 24: aedeagus), 25: female C. sculpturatus Orchymont, 1919, holotype.

FIGURES 26 – 27. Holotype labels: 26: Cycreon sculpturatus Orchymont, 1919, holotype, 27: Cycreon armandi Shatrovskiy, sp. nov., holotype.