Centistes compactus 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 : 20-22

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

( Figs 85–91 )

Female. Body length ( Fig. 85 ): 2.0– 2.5 mm. Body color: head black except face brown, clypeus, pedicel and scape yellow; mesosoma black-dark brown except fore and middle legs yellow, and hind legs with coxa, trochanter, trochantellus and femur yellow; wings hyaline; metasoma black-dark brown. Head ( Figs 86–87 ): antenna with 22– 23 flagellomeres; flagellar length/width ratios as follows: F1 = 3.0, F10 = 1.7, last flagellomere = 2.7; last flagellomere terminating apically in a sharp point; pedicel 1.1 × longer than wide; scape 1.8 × longer than wide; mandibles when closed overlapping for 0.6 × mandible length; mandible width basally 0.4–0.5 × mandible length; malar space 0.3 × eye height; malar space 1.2–1.4 × basal mandible width; gena sparsely pubescent; shortest distance between eyes 1.1–1.5 × greater than clypeus width; eye in lateral view 1.9–2.0 × taller than wide; lateral ocellus separated from compound eye by a distance 1.7–2.0 × ocellar width; frons glabrous; vertex with a few scattered setae; temple with few scattered setae; temple width equal to eye width; occipital carina thick and complete. Mesosoma: pronotum laterally glabrous and rugose, and dorsally pubescent; propleuron smooth; median mesonotal lobe anteriorly pubescent, posteriorly glabrous; lateral mesonotal lobes mostly glabrous with a single row of setae on lateral border; notauli either absent or only present anteriorly ( Fig. 89 ); pit on mesoscutum absent ( Fig. 89 ); scutellar sulcus bifoveate, with weaker carinae inside each fovea; scutellar disc sparsely pubescent; mesopleuron glabrous except dorsal and anterior borders pubescent; precoxal sulcus absent; metanotum irregularly longitudinally carinated; metapleuron mostly glabrous with just a few setae on the borders; propodeum glabrous; propodeum subdivided into anterior and posterior halves by a strong transverse carina, and with a medianlongitudinal dorsal carina present ( Fig. 88 ); propodeum surfaces mostly smooth, laterally rugose, then becoming rugulose or rugose around the carinae. Legs: hind coxa 1.7 × longer than middle coxa; hind femora length 3.2 × maximum width; hind tibia length 6.4 × longer than maximum width; hind tibial spur 0.6 × as long as hind basitarsus; ratio of hind tarsomeres from basitarsus apically 11:7:6:5:9. Wings: fore wing length 2.4–2.7 mm; pterostigma 2.6 × longer than maximum width; length of marginal cell 2R1 along anterior wing margin equal to length of pterostigma; vein r-rs 0.3 × 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 0.7 × as wide as apical width, and 1.4 × longer than apical width; first tergite longitudinally costate with costae almost parallel ( Fig. 90 ); spiracle of tergum one situated on lateral margin near to the half of segment; hypopygium short and ventrally convex; ovipositor sheath as long as basal width, and 0.7–1.0 × as long as basitarsus; ovipositor sheath densely pubescent, and terminating in a rounded area ( Fig. 91 ).

Male. Body length: 2.2 mm. Body color: same as in female except clypeus brown. Head: antenna with 22 flagellomeres; mandible width basally 0.5 × mandible length; malar space 0.3 × eye height, and 1.2 × basal mandible width; shortest distance between eyes 1.3 × greater than clypeus width; eye in lateral view 1.9 × taller than wide; lateral ocellus separated from compound eye by a distance 1.7 × ocellar width; temple width equal to eye width. Mesosoma: propodeum surfaces rugose, and smooth areas on dorsum. Wings: fore wing length 2.3 mm.

Holotype female. COSTA RICA: San Jose, Zurqui de Moravia , 1600 m, vii.1991, P. Hanson leg. Deposited in UWIM.

Paratypes. COSTA RICA: One female, one male, San Jose, Zurqui de Moravia , 1600 m, vi.1990, P. Hanson leg., Malaise. One female , San Jose, Zurqui de Moravia , 1600 m, ii.1994, P. Hanson leg., Malaise. Two females , San Jose, Zurqui de Moravia , 1600 m, iii.1992, P. Hanson leg., Malaise. One female , San Jose, Zurqui de Moravia , 1600 m, x.1995, P. Hanson leg., Malaise. One female , San Jose, Zurqui de Moravia , 1600 m, xii.1995, P. Hanson leg., Malaise. All paratypes deposited in UWIM.

Comments. Centistes compactus is quite distinctive from other Centistes species by its stout body appearance and strong legs.

Etymology. The Latin “ compactus ” means compact, robust or stout, referring to its built body shape.

Figures

FIGURES 85 – 91. Centistes compactus sp. n. 85) Lateral habitus, 86) anterior head, 87) dorsal head, 88) propodeum, 89) mesoscutum, 90) dorsal metasoma, 91) ovipositor sheaths with long and dense pubescence, and ovipositor partly protruding.