Anthelephila jambi, 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 : 175-177

Anthelephila jambi sp. nov.

( Figs 15–18 )

Type locality. Indonesia, Sumatra, Jambi Province,Mount Tujuh,Kerinci Seblat National Park, altitude 1700–1900 m.

Type material. HOLOTYPE: ♂, ‘ SUMATRA (Jambi) GUNUNG TUJUH , Kerinci Nat. P. 1700–1900 m, 8.III.1991 Bocák & Bocáková lgt. [p]’ ( NMPC). PARATYPES: 1 ♂, same data as holotype ( ZKDC); 9 ♂♂, ‘ Sumatra, Gunung Tuju, Gunung Kerinci-NP. , leg. A. Riedel, 12.X.1991 [p; yellow label] // Formicomus serdangus Marseul det. G. Uhmann 1993 [p+h]’ ( ZKDC, DCDC); 25 ♂♂, ‘ SUMATRA Gn Tujuh 5 km E Karsik Dua 3.-5. May 2001 Bolm lgt., 1900 m [p]’ ( NHMB); 321♂♂, ‘ SUMATRA; JAMBI prov.; Kerinci Seblat N.P.; 7km E Kayuaro; Mt.TUJUH ;1750 ± 250 m; 1°45′S 101°25′E; 25.ii.-2.iii.2003 L. Dembický leg. ( NMPC, ZKDC, 2 spec. each in BMNH, DCDC, MNHN, NHMW, ZSMC).

Additional material examined. INDONESIA: SUMATRA: 4 ♂♂, West Sumatra prov., Mount Merapi , S of Bukittinggi, 1050–1800 m, 11.iii.1991, L. Bocák & M. Bocáková lgt. ( ZKDC); 4♂♂ 6 ♀♀, West Sumatra prov., Mount Talamau , 17 km E of Simpangempat, 750 m, 21.–25.v.2001, Bolm lgt. ( SMNS, ZKDC); 2 ♀♀, Jambi prov., Mount Tujuh , Kerinci Seblat National Park , 1700–1900 m, 8.iii.1991, L. Bocák & M. Bocáková lgt. ( ZKDC); 6 ♀♀, same locality, 12.x.1991, A. Riedel lgt. ( ZKDC); 3 ♀♀, Jambi prov., Mount Tujuh , 5 km E of Karsik Dua, 3.–5.v.2001, Bolm lgt. ( NHMB); 6 ♂♂ 96 ♀♀, Jambi prov., Kerinci Seblat National Park , 7 km E of Kayuaro, Mount Tujuh , 1°45′S 101°25′E, 1750 ± 250 m, 25.ii.–2. iii.2003, L. Dembický lgt. ( NMPC, ZKDC).

Description. Male (holotype). Body length 3.7 mm. Black, unicolorous; antennae, mouthparts, narrowed basal portion of femora and tarsi slightly brownish.

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

Pronotum elongate, 1.6 times as long as wide, distinctly narrower than head including eyes, nearly evenly rounded anteriorly, weakly narrowed and impressed (constricted) postero-laterally in dorsal view; pronotal disc evenly shaped, evenly moderately convex in lateral view. Surface smooth and glossy, including posterior third; disc sparsely punctate, similarly as head; lateral sides largely impunctate, postero-lateral impressions coarsely shortly wrinkled. Setation as on head.

Mesoventrite with slight indication of narrow median longitudinal bulge anteriorly, largely carina-like, with several longer setae antero-laterally and in median line; metaventrite simple.

Elytra 1.7 times as long as wide, conjointly rounded apically; humeri distinct, postscutellar impression absent. Surface glossy, rather evenly, distinctly punctate; punctation double, setiferous punctures widely separated. Setation uniform, similar to that on head; scattered, moderately longer tactile setae.

Metathoracic wings developed.

Fore legs simple (see Variation); 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. 15 ) shallowly emarginate, with narrow, apically rounded and setose median process, projecting from inner side. Sternite VIII ( Figs 16, 17 ); paired prongs bifurcate and moderately lobed ventrally near apex. Tergum VII nearly evenly rounded posteriorly. Tergite VIII forming a pair of sclerites, narrowly connected medially, narrowly rounded apically. Apical sclerite of segment IX inconspicuous. Aedeagus ( Fig. 18 ); apical portion of tegmen 0.7 times as long as basal-piece, trilobed apically.

Female. Externally differing from male as follows: fore legs always quite simple; mesoventrite nearly simple (median carina absent); abdominal sternum VII simple, rounded apically; tergum VII subtriangular, rounded apically.

Variation. Body length (♂ ♀) 3.2–4.5 mm; protibiae in some specimens (all from Merapi and Talamau Mounts) with slight denticle on inner side at about mid-length (varying in prominence); moderately variable in shape/ prominence of subapical lobules of paired prong of male sternite VIII.

Differential diagnosis. Anthelephila jambi sp. nov. appears to be close to A. krekichi Kejval, 2018 from Java and A. similis ( Krekich-Strassoldo, 1925) from Sumatra, as suggested by the simple profemora, setose median projection of sternum VII, and bifurcate prongs of sternite VIII). It differs in nearly simple mesoventrite in both sexes (having prominent, denticulate median longitudinal carina in both latter species), in simple protibiae or nearly so, with slight denticle, and in the detailed shape of paired prongs of male sternite VIII, see figures by KREKICH- STRASSOLDO (1925). For its separation from externally similar, sympatric A. srivijaya sp. nov. see the differential diagnosis of that species.

Etymology. Named after the Jambi province; noun in apposition.

Distribution. Indonesia (Sumatra).

Remarks. Anthelephila jambi sp. nov. appears to be more widely distributed within the Bukit Barisan Mountain Range and thus may form more or less aberrant populations, showing slight differences in male characters (mainly detailed morphology of sternite VIII). On the other hand, the most aberrant specimens (six males listed under additional material) originate directly from Mount Tujuh and may possibly belong to a different, very close species. Since, moreover, sympatric A. srivijaya sp. nov. differs solely in male characters, the type series comprises only males, originating from a single locality.

Figures

Figs 15–18. Anthelephila jambi sp. nov., male, holotype: 15 – sternum VII; 16 – prongs of sternite VIII; 17 – apical portion of prong, ventrally; 18 – apical portion of tegmen. Scale bars: 0.2 mm – A (Figs 16, 17), B (Figs 15, 18).