Revision of the Agrilus gratiosus species-group (Coleoptera, Buprestidae, Agrilinae) Author Jendek, Eduard text Zootaxa 2018 2018-06-13 4433 3 478 490 journal article 29910 10.11646/zootaxa.4433.3.5 ed665a33-a603-46e9-a8aa-3c20288d0583 1175-5326 1290385 2F49E285-CEDA-46EF-8AB6-77D21A8F67CB Agrilus pergratus sp. nov. ( Figs. 2C , 3D ) Description of holotype Size: 5.4 mm . BODY. Shape: cuneiform, Color (dorsally): unicolored. HEAD. Size: very large, Modification: strongly convex, Medial impression: shallow. Vertex Medial impression: present, Sculpture elements: rugae, Sculpture aspect: arcuate. Eyes Size: subequal or larger than width of vertex (dorsal view), Lower margin: in line or below antennal socket, Median orbit: subparallel. Antennae Serration: from antennomere 4. PRONOTUM. Shape: visually transverse, Sides: slightly arcuate, Maximal width: at posterior margin, Anterior margin: narrower than posterior. Anterior lobe Development: obvious, Shape: arcuate, Width: broad, Position: at level with anterior angles. Posterior angles Shape: rectangular, Apex: sharp. Disk Impressions: medial and lateral, Medial impression: entire, Lateral impressions (depth): deep, Lateral impressions (width): broad. Prehumerus Development: carinal, Shape: arcuate, Extent: to 1/2 of pronotal length, Anterior end: distant from lateral carina, Posterior end: joined with posterior angle or margin, Arc: weak. Lateral carinae Interspace: narrow, Convergence: moderate, Junction: present, Narrowest point: at posterior angles. ELYTRA. Color: unicolored, Humeral carina: absent. Apices Arrangement: conjoint, Shape: arcuate. Pubescence Color: unicolored, Extent: entire ornamental. STERNUM. Pubescence Strip of erect pubescence: extending from prosternal lobe to metasternal projection. Prosternal lobe Size: large, Distal margin: arcuate. Prosternal process Shape: subparallel, Sides: arcuate, Angles: obtuse, Angles (tips): blunt, Disc: flat, Projection (length): protruding distinctly beyond angles. Metasternum Metasternal projection: flat. ABDOMEN. Basal ventrite Modifications: without modifications. Pygidium Apical margin: arcuate. Last ventrite Shape: with narrow apex. Sternal groove Extent: on all ventrites, Shape on apex of last ventrite: arcuate. LEGS. Metatarsus Length to metatibia: distinctly shorter. Metatarsomere 1 Length to following tarsomeres: longer than 2–3 but shorter than 2–4. GENITALIA. Aedeagus Symmetry: symmetric. Variability. Size: 4.3–6.6 mm . Pronotum rarely violet. Sexual dimorphism. Vertex with golden (male) or white (female) pubescence. Elytral pubescence golden or golden and white (male), or white (male, female). Ventral side in male with medial strip of white erect pubescence extending from prosternal lobe to metasternal process (lateral view). Aedeagus ( Fig. 3D ). Diagnosis. Agrilus pergratus sp. nov. is homomorphic with A. gratiosus and A. transversus . The reliable identifications is based on the shape of aedeagus (see key to species). Type material. Type locality. Malaysia , Pahang province, Tioman island , Kampong Tekek env. Type specimens. Holotype ♂ , 1 ♂ paratype ( EJCB ): “ Malaysia : Tioman isl. , Kampong Tekek env., 6–26.xii.2000 , R. Hergovits leg.” . Paratypes . MALAYSIA : Johor . “ S Kahang Estate , Johore Malay, J.R. Pippet” 1 ♂ paratype ( ZRC ); “ Malaysia , Johor , 20km N of Kota Tingi , 10–13.Feb 2005 , 100m, Bolm lgt.” 1 ♀ paratype ( EJCB ). Malacca . “ Perak Malacca ( Doherty )” 1 ♂ paratype ( MNHN ) . Pahang . “ Malaysia : Pahang , Tioman Island , Kg. Tekek Umgebung , 15– 26.7.1992 (7), leg. R. Schuh ” 1 ♂ paratype ( EJCB ); “ Malaysia : Pahang , Tioman island , Umg. Kampung Tekek , 16– 24.7.1993 , lg. Schuh ” 1 ♂ paratype ( EJCB ); “ Malaysia , Tioman , rd. Kampong Tekek - K. Juara , 4–16.iii.1998 , alt. 0–400 m , 2.48° N , 104.11°E , D. Hauck leg.” 1 ♂ paratype , 1 ♀ paratype (EJCB); “Malaysia, Tioman , rd. Kampong Tekek - K. Juara , 4–16.iii.1998 , alt. 0–400 m , 2.48° N , 104.11°E , Dembický & Pacholátko leg.” 17 paratypes ( EJCB ); “ Malaysia : Tioman isl. , K. Tekek - K. Juara , 2.48° N , 104.11°E , 5–295 m , 7–25.II.2000 leg. Štrba ” 1 ♀ paratype ( EJCB ); “ Malaysia , Pahang distr., 30km NE Raub , Lata Lembik , 3°56'N ; 101°38'E , 200–400 m , 22.IV.–1.V. , 8–15.V.2002 , E. Jendek & O. Šauša leg.” 1 ♂ , 2 ♀ paratypes ( EJCB ); “ Malaysia - Pahang distr., Tioman Isl. , Kampung Tekek env., 2–13.iii.2009 , M. Štrba leg.” 1 ♀ paratype ( EJCB ); “ Malaysia , prov. Johor [sic!, should be Pahang ], Tioman Isl. , jungle track, 10–600 m a s.l., 15– 29.3.2009 , V. Hula ” 1 ♀ paratype ( EJCB ) . Selangor . “ Malaysia , Selangor , Templer Park , 1–5.xii.1979 ” 1 ♀ paratype ( EJCB ). Distribution. MALAYSIA : Johor , Malacca , Pahang , Selangor . Etymology. The Latine adjective (very pleasant). It refers to the gracefulness of the species.