Revision of the genera Microplitis and Snellenius (Hymenoptera, Braconidae, Microgastrinae) from Area de Conservacion Guanacaste, Costa Rica, with a key to all species previously described from Mesoamerica Author Fernandez-Triana, Jose L. Author Whitfield, James B. Author Smith, M. Alex Author Kula, Robert R. Author Winnie Hallwachs, Author Janzen, Daniel H. text Deutsche Entomologische Zeitschrift 2015 62 2 137 201 http://dx.doi.org/10.3897/dez.62.5276 journal article http://dx.doi.org/10.3897/dez.62.5276 1860-1324-2-137 A7FDC588B1504AEBA136346DA36907A9 Taxon classification Animalia Hymenoptera Braconidae Microplitis hebertbakeri Fernandez-Triana & Whitfield sp. n. Figures 39-45 Holotype . ♀ in USNM. COSTA RICA, ACG, Guanacaste Province, Sector El Hacha, Sendero Bejuquilla, 280m, 11.03004, -85.52699, 17.v.1999. ACG database code: DHJPAR0012604. Paratypes. 3♀, 7♂ (CNC, USNM). COSTA RICA, ACG, database codes: DHJPAR0012581, DHJPAR0012591, DHJPAR0012603, DHJPAR0012609, DHJPAR0012610, DHJPAR0012611, DHJPAR0012612, DHJPAR0012614, DHJPAR0013339, DHJPAR0031721. Diagnosis. This is the only ACG species of Microplitis with T1 parallel-sided for most of its length, narrowing on posterior 0.1, its length more than 3.0 x its width at posterior margin; and scutellar disc dull, uniformly sculptured by coarse punctures. Description. Female. Scape color: Black. Mesosoma color: Black. Metasoma color: Dark reddish-brown. Coxae color (pro-, meso-, metacoxa): Yellow, yellow, reddish-brown. Femora color (pro-, meso-, metafemur): Yellow, yellow, orange-brown (darker dorsally). Tibiae color (pro-, meso-, metatibia): Yellow, yellow, mostly orange-brown (anterior 0.2 yellow-white, central 0.6 orange-brown, posterior 0.2 dark brown). Metatibia spurs color: White. First segment of metatarsus color: Dark brown. Tegula and humeral complex color: Yellow, yellow and brown. Wings: Hyaline. Pterostigma color: Brown with pale spot at base. Fore wing veins 1RS and (RS+M)a: Brown (same color as surrounding veins). Body length (head to apex of metasoma): 2.8-2.9 mm. Fore wing length: 2.6-2.7 mm. Ocular-ocellar line/posterior ocellus diameter: 2.0 x. Interocellar distance/posterior ocellus diameter: 1.6 x. Ocular-ocellar line/posterior ocellus diameter/interocellar distance: 0.15/0.07/0.11 mm. Antennal flagellomere 2 length/width: 3.1 x (0.25/0.08 mm). Antennal flagellomere 14 length/width: 2.4 x (0.17/0.07 mm). Length of flagellomere 2/length of flagellomere 14: 1.5 x. Antenna in males: Of normal appearance, not flattened. Epicnemial carina: Absent. Anteromesoscutum: Slightly sculptured, with smooth areas, central area not appearing elevated compared to lateral areas of anteromesoscutum, notauli faint or poorly defined. Scutellar disc sculpture: With margins and central part of disc equally sculptured. Number of carinae in scutoscutellar sulcus: Five. Metafemur length/width: 3.3-3.6 x (0.72 -0.77/0.20- 0.23 mm). Metatibia length: 0.97-1.03 mm (X = 1.00 mm). First segment of metatarsus length: 0.41-0.43 mm (X = 0.42 mm). Mediotergite 1 length/width at posterior margin: 2.9-3.1 x. Mediotergite 1 length/width at anterior margin/maximum width/width at posterior margin: 0.42 -0.44/0.19-0.20/0.20-0.22/0.13- 0.16 mm. Mediotergite 1 sculpture: Mostly sculptured. Male. As in female. Figures 39-45. Microplitis hebertbakeri Fernandez-Triana & Whitfield. 39 Habitus, lateral view 40 Fore wing 41 Metasoma, dorsal view 42 Hind leg and metasoma, lateral view 43 Head and mesosoma, dorsal view 44 Scutellar disc and propodeum, dorsal view 45 Detail of hypopygium and ovipositor sheaths. Distribution. Costa Rica, ACG. Hosts. Unknown. Molecular data. Three haplotype, 11 sequences (11 barcode-compliant) in BOLD. Etymology. This species is named in honour of Hebert Baker in recognition of his contribution to understanding the plant biology of ACG.