The sawflies and woodwasps (Hymenoptera: ‘ Symphyta’) of Colombia Author Malagón-Aldana, Leonardo A. Author Smith, David R. Author Vilhelmsen, Lars Author Serna, Francisco text Zootaxa 2019 2019-07-11 4633 1 1 88 journal article 26216 10.11646/zootaxa.4633.1.1 53b4d580-0d02-4bfd-8792-2bec3516454d 1175-5326 3335342 01373C87-C408-46B6-805C-1025DEDEDD81 Ptenos amazonicus Malagón-Aldana sp. nov. ( Fig. 7 a–h) LSID: urn:lsid:zoobank.org:act: 40F875CF-D871-4CE7-BE8D-237CEA8363F4 Female: Length 4.6–5.3 mm Antenna length 1.7 × head width; scape 2 × as long as pedicel; scape length 2.3 × its width; pedicel as long as wide; eyes large, in frontal view lower interocular distance 0.6 × eye length; distance between lateral ocelli subequal to distance between eye and lateral ocellus (1–1.1 x), and to that of lateral ocelli and posterior margin of head (1.1 ×); malar space short ( Fig. 7b ), 0.3–0.4 × diameter of median ocellus; clypeus truncated; interantennal area with superficial straight and short carina. Metabasitarsus 0.5 × length of corresponding tarsus. Fore wing with cell 2Rs as long on Rs as on M; hindwing with anal cell present ( Fig. 7a ). 1 st valvulae broad, triangular, tapering gradually to apex; lamnium with 16 annuli decreasing in width distally ( Fig. 7f ); each annulus bordered anteriorly by row of broad ctenidia, first 4 proximal annuli present, with ctenidia only on dorsal half, subsequent annuli with ctenidia dorsoventrally; ctenidia length increasing toward ventral region of valvula; ctenidia longest close to upper margin of sclerora ( Fig. 7f,h ); wall of each annulus with spiniform microtrichia, arranged into irregular patches; first proximal four annuli with lateral and circular campaniform sensilla, irregularly distributed; sclerora provided with marginal campaniform sensilla, one on each annulus, except for first three proximal annuli which contain multiple sensilla ( Fig. 7f,h ); ventral surface of each annulus with deltoid sawteeth projected anteriorly as rounded lobe, each lobe with semicircular notch ( Fig. 7g ); area distal to notch of each sawtooth having multiple serrulae; distal region of first valvula with undifferentiated sawteeth although with numerous irregular serrulae. Third valvulae with short apicolateral lobes (= scopae s. Ross 1937 ), in ventral view slightly shorter than apex of valvulae. Abdomen with T1 almost completely reduced or membranized. Color. Head black with white spot on supraclypeal area; antenna black. Thorax black anteriorly, with posterior half surface of mesoscutum median lobe (two transverse black spots on anterior margin of axillae) and tegula orange; metascutellum and its lateral arms white with black spot on metascutellum medially; mesopleural wing process, dorsal half of pleural suture and mesotransepimeral suture white. Legs white with distal half of tibiae and tarsi black ( Fig. 7 a–d). Prefemur with proximal transversal black spot. Wings black. Abdomen, valvifers and third valvulae black. Male: Unknown. Holotype : ♀ . COLOMBIA . Caquetá , Florencia , Vda. La Viciosa , Centro de investigaciones amazónicas Macagual , Uniamazonia , CIMAZ. 256m . 1°30’05”N , 75°39’48”W . 26-Mar-2016 . L. Malagón leg. Deposited at UNAB 3706. FIGURE 7. Ptenos amazonicus sp. nov. (UNAB 3706), a. Habitus, dorsal view; b. Head, frontal view; c. Head and thorax, dorsal view; d. Habitus, lateral view; e. Cocoon; f-g. First valvula; f. Habitus, lateral view; g. Microtrichia patch; h. Sawteeth; i. Annulus.Abbreviation of main veins in blue, wing cells in white. C, costa; Cu, cubitus; M, media; r-m, radial-median crossvein; m-cu, mediocubital crossvein; R, radius; r-rs, radial crossvein; Rs, radial sector. Etymology: The species name refers to the Amazonas region of Colombia where the specimen was collected. Remarks: Color pattern of the holotype is similar to that of delta and midea ; however, the pronotum and antenna are black in amazonicus . In addition, the singular notch in each sawtooth on first valvula allow to distinguish the species. Host: Reared from young plants of Zygia longifolia (Fabaceae) . Larvae and cocoon found on leaves of the host ( Fig. 7e ). Ptenos sp. : COLOMBIA . Cundinamarca , Arbelaez , 1417m , 4°16’N , 74°24’W , 09 August 1996 , A. Bejarano leg., 1 ♀ , ( UNAB 714 ) . Huila , Pitalito , Cto. Regueros , Vda. Corinto , Reserva natural de Pompeya , 1548m , 1°54’N , 76°04’W , hand collecting, 23 September 2014 , A. Parra-Galindo leg., 1 ♂ , ( UNAB 897 ) . Putumayo , Loma Alta , PNN La Paya , 350m , 0°06’S , 74°58’W , malaise trap , 03 August 2004 , M. Trejos leg., 1 spec. , (IAvH-E- 151161 ).