Amphisternus alberti, Tomaszewska, 2014

Tomaszewska, Wioletta, 2014, New species of the Amphisternus-group of Lycoperdininae from Philippines (Coleoptera: Endomychidae), Acta Entomologica Musei Nationalis Pragae 54 (2), pp. 635-644 : 638-641

Amphisternus alberti sp. nov.

( Figs 1–5 , 9–13 )

Type material. HOLOTYPE: ♁, ‘ PHILIPPINES / MINDANAO/ Zamboanga del Norte / II. 2011 / leg. I. Lumawig // Holotype Amphisternus alberti sp. nov., Tomaszewska 2014’ ( MZPW) . PARATYPES: ♀, same data as holotype ( MZPW) ; ♀, same but ‘ XII. 2010 ’ ( AABI) ; ♀, ‘ PHILIPPINES, MINDANAO, Misamis Oriental, X. 2013, leg. I. Lumawig’ ( AABI) .

Description. Length 6.8–7.8 mm. Body 1.70–1.83 times as long as wide; pronotum 0.50–0.60 times as long as wide; elytra 1.15–1.25 times as long as wide; 2.75–2.90 times longer than pronotum, 1.23–1.32 times wider than pronotum. Body ( Figs 1, 2, 5 ) short-oval, convex, opaque; colour black with only elytral tubercles red-orange. Antenna ( Fig. 4 ) with antennomere 3 about 1.3 times longer than antennomere 4 or 5. Pronotum ( Fig. 3 ) impunctate, weakly reticulated; pronotal disk with two pairs of weak convexities/tubercles; anterior angles blunt, posterior angles weakly acute. Elytra weakly wider than base of pronotum; shoulders obliquely widened and carinate; humeral carina with prominent red-orange tubercle; each elytron with basal moderately high, round-oval, red-orange tubercle, a pair of similar tubercles in apical third and a large, carinate black tubercle, somewhat rectangular in shape (in lateral view) a little in front of mid length ( Fig. 2 ); elytral punctures coarse and almost touching one another. Hind wings absent. Male fore tibia with small tooth in apical third and male fore trochanters with small triangular tubercle on outer edge. Aedeagus ( Figs 9, 10 ) short and stout; median lobe with inner margin denticulate in mid length.

Female genitalia ( Fig. 13 ). Ovipositor with styli distinct, subterminal; spermatheca large, elongate-oval.

Differential diagnosis. This species is most similar to A. nanus , but can be distinguished by larger body, which is deeply black and opaque, humeral carina less oblique and with large rounded, red-orange tubercle, and discal tubercle larger and rectangular in lateral view.

Etymology. The new species is dedicated to Mr. Albert Allen, who kindly sent me the specimens of this new species for study.

Distribution. Philippines (Mindanao).

Figures

Figs 1–8. Habitus. 1–5 – Amphisternus alberti sp. nov.; 6–8 – Gerstaeckerus rufiplagiatus sp. nov. 1, 6 – dorsal habitus; 2 – lateral habitus; 3, 8 – pronotum; 4, 7 – antenna; 5 – habitus, anterior view.

Figs 9–14. Genitalia. 9–13 – Amphisternus alberti sp. nov.; 14 – Gerstaeckerus rufiplagiatus, sp. nov. 9 – aedeagus, dorsal view; 10 – aedeagus, ventral view; 11 – abdominal segment VIII, male, ventral view; 12 – male genital segment, ventral view; 13, 14 – female genitalia, ventral view.