Anthelephila srivijaya, Kejval, 2019

Kejval, Zbyněk, 2019, Studies of the genus Anthelephila Hope (Coleoptera: Anthicidae). Part 19. New species from Indonesia and Malaysia, Acta Entomologica Musei Nationalis Pragae 59 (1), pp. 171-184 : 179-180

Anthelephila srivijaya sp. nov.

( Figs 29–33 )

Type locality. Indonesia, West Sumatra Province, Mount Singgalang, altitude 1600 m.

Type material. HOLOTYPE: ♂, ‘ Gunung Singgalang (Sumatra’s Westkust) 1600 M. VII 1925 leg. E. Jacobson. [p+h] // Formicomus gratiosus Krekich det. G. Uhmann 1981 [p]’ ( ZSMC). PARATYPES: 4 ♂♂ 1 ♀, same data as holotype ( ZKDC, ZSMC); 2 ♂♂, ‘ SUMATRA Gn Merapi 5 km E of Kolobaru 18-25. May 2001 Bolm lgt., 1600 m [p]’ ( NHMB); 3 ♂♂, ‘ SUMATRA Gn Talamau 17 km E of Simpangempat 21.-25. May 2001 750 m Bolm lgt., ( Ophir mts ) [p]’ ( SMNS).

Description. Male (holotype). Body length 3.8 mm. Body black, head anteriorly and elytra apically with brownish tinge; antennae and legs brownish-black.

Head 1.2 times as long as wide, somewhat angled postero-medially (widely parabolic), distinctly differentiated from short neck; tempora strongly narrowing posteriad, posterior angles absent. Eyes medium-sized, rather convex. Dorsal surface glossy, delicately punctate, corrugated anteriorly on frons; punctures distinctly separated. Setation subdecument; scattered tactile setae. Antennae robust, sligthtly enlarged in terminal third; antennomere I 2.4 times, X 1.55 times, XI 3.4 times as long as wide.

Pronotum 1.6 times as long as wide, distinctly narrower than head including eyes, nearly evenly rounded anteriorly, moderately narrowed and impressed (constricted) postero-laterally in dorsal view; pronotal disc nearly evenly moderately convex in lateral view. Surface smooth and glossy, including posterior part; disc delicately sparsely punctate; lateral sides largely impunctate, postero-lateral impressions wrinkled and adjacent dorso-lateral surface rugose. Setation as on head.

Mesoventrite with slight median longitudinal carina; metaventrite with paired robust submedian projections posteriorly.

Elytra 1.6 times as long as wide, conjointly rounded apically; humeri distinct, postscutellar impression absent. Surface glossy, distinctly punctate; punctation double, setiferous punctures evenly developed, widely separated.Setation uniform, nearly decumbent; numerous longer erect tactile setae.

Metathoracic wings developed.

Fore legs modified ( Fig. 29 ); profemora moderately lobed; protibiae abruptly narrowed and somewhat flattened distally, with distinct blunt protrusion on inner side; all tibiae with two terminal spurs; penultimate tarsomere widened/flattened distally, with terminal tarsomere articulated dorsally near base for all tarsi.

Abdominal sternum VII ( Fig. 30 ) distinctly emarginate, with narrow, apically rounded and setose median process, projecting from inner side. Sternite VIII ( Figs 31, 32 ); paired prongs simple, with moderately lobed dorsal margin and hooked, laterally flattened apical part. Tergum VII simple, evenly rounded apically. Tergite VIII forming a pair of sclerites, narrowly connected medially, narrowly rounded apically.Apical sclerite of segment IX membranous, rounded apically. Aedeagus ( Fig. 33 ); apical portion of tegmen 0.7 times as long as basal-piece, rounded apically, with indication of lateral subapical lobes.

Female. Externally differing from male as follows: antennae slender; fore legs and metaventrite simple; mesoventrite nearly simple (median carina absent); abdominal sternum VII moderately produced and angled apically; tergum VII subtriangular, rounded apically.

Variation. Body length (♂ ♀) 3.6–3.8 mm.

Differential diagnosis. Anthelephila srivijaya sp. nov. is probably close to A. jambi sp. nov., as suggested by nearly simple mesoventrite and similarity in morphology of male sternum VII and tegmen. It can be distinguished by male characters only (females are essentially identical), e.g. by distinctly modified front legs, reduced lateral subapical lobes of tegmen, and mainly by the paired prongs of sternite VIII, that are rather dissimilar, robust and curved apically (cf. Figs 31, 32 versus 16, 17).

Etymology. Named after the ancient Srivijaya kingdom, based on the Island of Sumatra and dominating much of the Malay Archipelago; noun in apposition.

Distribution. Indonesia (Sumatra).

Figures

Figs 29–33. Anthelephila srivijaya sp. nov., male, holotype: 29 – profemur (right) and protibia (left); 30 – sternum VII; 31 – prongs of sternite VIII; 32 – apical portion of prong in outline, laterally; 33 – apical portion of tegmen. Scale bars: 0.5 mm – A (Fig. 29); 0.2 mm – B (Fig. 30), C (Figs 31, 32), D (Fig. 33).