Aphanisticus hajeki, Kalashian, 2019

Kalashian, Mark Yu., 2019, A new species of the genusAphanisticus (Coleoptera: Buprestidae: Agrilinae) from Indonesia, Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 59 (2), pp. 463-466 : 463-465

Aphanisticus hajeki sp. nov.

( Figs 1 , 4 )

Type locality. Indonesia, E Kalimantan, ca. 15 km N of Balikpapan, Sungai Wain Protection Forest, 1°08.1′S 116°49.9′E, 35 m a.s.l.

Type material. HOLOTYPE: J ( NMPC), ʻINDONESIA, E Kalimantan / ca. 15 km N of Balikpapan / Sungai Wain Protection Forest / 01 o 08.1’S 116 o 49.9’E, 35 m / J. Hajek, J. Schneider & / P. Votruba leg. 8-11. xii.2011 [p] // primary rainforest, individual / in stream, puddles and / swamp, on vegetation and dead / wood; light trap at border of forest [p] // HOLOTYPE / Aphanisticus / hajeki sp. nov. / M. Kalashian det., 2018’. PARATYPES: 2 JJ 3 ♀♀, the same data as in holotype ( NMPC, MKCY).

Description. Body flattened, moderately elongate, 2.90– 3.05 times as long as wide, black with indistinct bronzy luster, surface microreticulated, reticulation rather distinct dorsally, in abdominal ventrites smoothed, nearly invisible. Length 3.10–3.85 mm (holotype – 3.20 mm), width 1.03–1.32 mm (holotype – 1.07 mm) ( Fig. 1 ).

Head moderately wide, with sides very feebly arcuate, subparallel. Eyes large, rather convex, well visible from above. Oculofrontal margins sharp, keel-shaped. Frons very slightly widened posteriorly (to above in frontal view), with deep doubled postclypeal fovea. Frontovertex deeply concave, concavity rounded posteriorly, not reaching anterior margin of pronotum. Surface of frons anteriorly nearly glabrous, concavity posteriorly with traces of few small punctures, vertex with sparse flat rounded punctures. Antennae serrate from antennomere 8. Antennomeres 1 and 2 robust, swollen, 3–7 rather long and thin, very finely enlarged distally, antennomere 8 nearly equilateral, 9–11 strongly transversal.

Pronotum 1.55–1.65 times as wide as long, widely cordiform, widest approximately in middle, sides anteriorly nearly regularly arcuate, slightly sinuate before obtuse posterior angles; anterior margin slightly bisinuate, posterior margin bisinuate with moderately wide triangular medial lobe. Lateral margins very finely irregularly serrate. Pronotum narrowly flattened along lateral margins, anterior and posterior margins distinctly elevated, disc with two transverse elevations; anterior elevation with edge obtusely keel-shaped, in shape of tick, posterior nearly completely divided by deep longitudinal groove into pair of irregularly ellipsoidal transverse elevations with rounded edge. Surface with few nearly indistinct traces of small punctures. Scutellum very small, triangular.

Elytra 1.95–2.10 times as long as wide, slightly widened just behind humeri, then sides sinuate approximately to posterior 2/5, where elytra become widest, then first finely arcuately and then nearly straightly narrowed towards slightly, separately angularly rounded apices, which are very finely serrate. Elytra weakly convex, distinctly depressed along suture, narrowly flattened along sides, with fine lateral carina. Humeral callosities with arcuate keel-shaped external edge. Suture entirely keel-shaped. Each elytron with distinct, slightly sinuous, longitudinal, medial keel, distally curved along apex and fusing with suture. Another, less pronounced, longitudinal keel between suture and medial keel in about 3/5 of elytra, and two slightly incurved keels extending from approximately 1/5–1/6 of medial keel towards elytral base along lateral sides of elytra. Surface laterally and basally with few indistinct irregular transversal wrinkles and fine punctures, distally and medially this sculpture nearly indistinct.

Propleurae microreticulated, medial portion of sternum and basal portion of abdomen with very shallow and indistinct large irregular punctures, backwards completely smoothed. Anal ventrite in both sexes rather widely, almost straightly truncate, with rounded lateral angles, with posterior margin in male glabrous, in female with very small teeth.

Aedeagus finely sclerotized, rather short and wide, parameres with two angularly rounded lateral lobes distally, penis tube short, approximately 2 times as short as parameres ( Fig. 4 ).

Differential diagnosis. The new species belongs to the A. javaecola species-group which is characterized by deeply be deposited, including BMNH, ZIN, MNHN but with no success. On the other hand, there is a specimen in NMPC which fully corresponds to the description of A. bohaci [ OBENBERGER (1924): 621 (key), 623 (description), Plate 1: 7]. This specimen ( Fig. 2 ) is designated as a type, but bears the identification label “ Aphanisticus pulcher m.” ( Fig. 3 ), the name which was never published by Obenberger. Most probably, Obenberger changed his mind concerning the name of the species but did not change the labels accordingly; however, this assumption cannot be proved. To remove the doubts about the identity of Aphanisticus bohaci Obenberger, I designate the ʻtype’ of A. pulcher as the neotype of A. bohaci according to the Articles 75.1 and 75.3 of the International Code of Zoological Nomenclature ( ICZN 1999). The type specimen is card mounted, its condition good, no damage was registered. The type locality of the species corresponds to its description: “Borneo [ Island]” without indicating the state (it is well known that Obenberger removed original labels replacing them with his own handwritten labels, and thus it is impossible to give any precise geographical data). The neotype designation is necessary for the exact definition of the species for further study of this rather complicated species-group.

concave frontovertex, rather convex eyes well visible from above, two broad transverse elevations on pronotum, and by presence of distinct longitudinal elytral costae. Aedeagus of the species of the group is rather short and wide. Aphanisticus javaecola species-group can be distinguished from other groups of Aphanisticus with costate elytra, occurring in the East Palaearctic and Oriental Regions, using the key provided in KALASHIAN (2004). To distinguish the new species from other species belonging to this group see the key below.

Etymology. The new species is dedicated to one of its collectors, Dr. Jiří Hájek (NMPC), with my gratitude and respect.

Figures

Figs. 1–3. Aphanisticus spp. 1 – A. hajeki sp. nov., holotype, habitus; 2 – A. bohaci Obenberger, 1924, neotype, habitus; 3 – A. bohaci Obenberger, 1924, neotype, labels

Fig. 4. Aphanisticus hajeki sp. nov., aedeagus. Scale bar = 0.25 mm.