Centistes hansoni Aguirre, Almeida & Shaw

Aguirre, Helmuth, Almeida, Luis Felipe Ventura De & Shaw, Scott Richard, 2017, Revision of the genus Centistes (Hymenoptera: Braconidae: Euphorinae: Centistini) of Costa Rica, Zootaxa 4216 (1), pp. 1-46 : 25-26

Centistes hansoni Aguirre, Almeida & Shaw , sp. n.

( Figs 106–112 )

Female. Body length ( Fig. 106 ): 1.7–2.1 mm. Body color: head black except face brown, clypeus, pedicel and scape yellow; mesosoma dark brown, except propleuron yellow; legs mostly yellow with middle and hind femora, and tarsus brown; wings hyaline; metasoma dark brown except T1 and ovipositor sheats black-dark brown. Head ( Figs 107–108 ): antenna with 20–21 flagellomeres; flagellar length/width ratios as follows: F1 = 4.0, F10 = 2.1, last flagellomere = 1.8; last flagellomere terminating apically in a sharp point; pedicel as long as wide; scape 2.0 × longer than wide; mandibles when closed overlapping for 0.5 × mandible length; mandible width basally 0.4–0.5 × mandible length; malar space 0.4 × eye height, and 1.1–1.4 × basal mandible width; gena pubescent; shortest distance between eyes 1.3 × greater than clypeus width; eye in lateral view 1.7–2.0 × taller than wide; lateral ocellus separated from compound eye by a distance 2.5 × ocellar width; frons glabrous; vertex with a few scattered setae; temple with few scattered setae; temple width 1.2–1.3 × eye width; occipital carina thick and complete. Mesosoma: pronotum glabrous; pronotum in lateral view mostly smooth, medially foveate; median mesonotal lobe anteriorly pubescent, posteriorly glabrous; lateral mesonotal lobes glabrous; notauli either absent or only present anteriorly ( Fig. 110 ); pit on mesoscutum absent ( Fig. 110 ); scutellar sulcus bifoveate, with weaker carinae inside each fovea; scutellar disc sparsely pubescent; mesopleuron glabrous except dorsal and anterior borders pubescent; precoxal sulcus foveate; metanotum mostly smooth except carinate on posterior border; metapleuron pubescent; propodeum pubescent except dorsum glabrous; propodeum subdivided into anterior and posterior halves by a strong transverse carina, and without a median-longitudinal dorsal carina ( Fig. 109 ); propodeum surfaces rugose except smooth areas on dorsum. Legs: hind coxa 1.4 × longer than middle coxa; hind femora length 5.1 × maximum width; hind tibia length 9.4 × longer than maximum width; hind tibial spur 0.5 × as long as hind basitarsus; ratio of hind tarsomeres from basitarsus apically 11:6:5:4:8. Wings: fore wing length 2.3–2.8 mm; pterostigma 4.0 × longer than maximum width; length of marginal cell 2R1 along anterior wing margin equal to the length of pterostigma; vein r-rs 0.5 × as long as pterostigma width; vein Rs+M absent; vein m-cu interstitial with vein RS; hind wing with three sickle-shaped hamuli. Metasoma: first tergite basally 0.5 × as wide as apical width, and 1.7 × longer than apical width; first tergite longitudinally costate with costae almost parallel ( Fig. 111 ); spiracle of tergum one situated on lateral margin near to the basal quarter of segment; hypopygium long, ventrally flat and with dorsal margin rounded; ovipositor sheath 2.1 × longer than basal width, and 1.0–1.3 × as long as basitarsus; ovipositor sheath pubescent, and terminating in a rounded area ( Fig. 112 ).

Male. Body length: 1.4 mm. Body color: same as in female. Head: antenna with 18 flagellomeres; mandible width basally 0.5 × mandible length; malar space 0.4 × eye height, and 1.7 × basal mandible width; gena sparsely pubescent; shortest distance between eyes 1.4 × greater than clypeus width; eye in lateral view 1.7 × taller than wide; lateral ocellus separated from compound eye by a distance 2.5 × ocellar width; frons glabrous; temple width 1.3 × eye width. Wings: fore wing length 2.0 mm.

Holotype female. COSTA RICA: Cartago, Cerro de la Muerte, Villa Mills , 3000 m, xi–xii.1989, P. Hanson leg., Malaise. Deposited in UWIM.

Paratypes. COSTA RICA: One female, one male, San Jose, Cerro de la Muerte , 20 km S. Empalme, 2800 m, iii–vi.1990, P. Hanson leg., Malaise. One female , Cartago, Cerro de la muerte, Villa Mills , 3000 m, v–vi.1989, P. Hanson leg., Malaise. One female, Cartago-San jose, 20 km SE. Empalme, 2800 m, ix.1988, P. Hanson leg., Malaise. One female, Cartago-San jose, 20 km SE. Empalme, 2800 m, x.1988, P. Hanson leg., Malaise. One female , San Jose, 26 km. N. San Isidro, just S. of Division , 2100 m, vi–viii.1992, P. Hanson leg., Malaise, secondary growth. One female , San Jose, Cerro de la Muerte , 20 km S. Empalme, 2800 m, vii–viii.1989, P. Hanson leg., Malaise. One female , Cartago, 4 km N.E. Canón Génesis II, 2350 m, ii–iii.1995, P. Hanson leg., Malaise. One female , Cartago, 4 Km, N.E. Canón Génesis II, 2350 m, ix.1996, P. Hanson leg., Malaise. All paratypes deposited in UWIM.

Comments. Centistes hansoni and C. compactus have a similar body shape, but C. hansoni has a weaker body, thinner legs, and ovipositor sheaths lacking dense and long setae.

Etymology. This species is named after Dr Paul Hanson, recognized hymenopterologist, and one of the pioneers of the Hymenoptera of Costa Rica project.

Figures

FIGURES 106 – 112. Centistes hansoni sp. n. 106) Lateral habitus, 107) anterior head, 108) dorsal head, 109) propodeum, 110) mesoscutum, 111) dorsal metasoma, 112) ovipositor sheaths with protruding ovipositor.