Centistes hirsutus 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 : 27-28

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

( Figs 113–119 )

Female. Body length ( Fig. 113 ): 2.6–2.8 mm. Body color: head dark brown except gena and antenna basally yellow, clypeus either whitish or brown; mesosoma black-dark brown except basal half of pronotum, propleura and legs yellow, though sometimes hind telotarsus dark brown; wings hyaline; metasoma dark brown except T1 black. Head ( Figs 114–115 ): antenna with 22–23 flagellomeres; flagellar length/width ratios as follows: F1 = 3.0, F10 = 2.3, last flagellomere = 1.9; last flagellomere terminating apically in a sharp point; pedicel as long as wide; scape 1.8 × longer than wide; mandibles when closed overlapping for 0.5 × mandible length; mandible width basally 0.4– 0.5 × mandible length; malar space 0.3 × eye height, and equal to basal mandible width; gena sparsely pubescent; shortest distance between eyes 1.1–1.2 × greater than clypeus width; eye in lateral view 1.6–1.7 × taller than wide; lateral ocellus separated from compound eye by a distance 1.7–1.9 × ocellar width; frons pubescent but medially glabrous; vertex pubescent; temple pubescent; temple width 0.8–0.9 × eye width; occipital carina thick and complete. Mesosoma: pronotum glabrous; pronotum in lateral view mostly smooth, medially foveate; propleuron with anterior and medial margins rugose, remaining surfaces smooth; median and lateral mesonotal lobes pubescent ( Fig. 117 ); notauli either absent or only present anteriorly; pit on mesoscutum large and oval ( Fig. 117 ); scutellar sulcus bifoveate, with weaker carinae inside each fovea; scutellar disc sparsely pubescent; mesopleuron centrally glabrous, borders and area below precoxal sulcus pubescent; precoxal sulcus foveate; metanotum irregularly longitudinally carinated; metapleuron pubescent; propodeum pubescent except dorsum glabrous; propodeum subdivided into anterior and posterior halves by a strong transverse carina, and with a median-longitudinal dorsal carina present, sometimes carinate-areolate ( Fig. 116 ); propodeum surfaces carinaterugose, with smooth areas on dorsum. Legs: hind coxa 1.6 × longer than middle coxa; hind femora length 4.6 × maximum width; hind tibia length 10.0 × longer than maximum width; hind tibial spur 0.4 × as long as hind basitarsus; ratio of hind tarsomeres from basitarsus apically 16:9:7:6:9. Wings: fore wing length 2.5–3.0 mm; pterostigma 3.1 × longer than maximum width; length of marginal cell 2R1 along anterior wing margin 0.9 × the length of pterostigma; vein r-rs 0.4 × as long as pterostigma width; vein Rs+M present as a short stub; vein m-cu basal with vein RS; hind wing with three sickle-shaped hamuli. Metasoma: first tergite basally 0.6 × as wide as apical width, and 1.5 × longer than apical width; sculpture of first tergite longitudinally costate with costae almost parallel ( Fig. 118 ); spiracle of tergum one situated on lateral margin near the basal quarter of segment; hypopygium short and ventrally convex; ovipositor sheath 2.3–2.5 × longer than basal width, and as long as basitarsus; ovipositor sheath densely pubescent; ovipositor sheath terminating in a rounded ( Fig. 119 ).

Male. Unknown.

Holotype female. COSTA RICA: Cartago Pr., La Cangreja , 1950 m, i.1992, P. Hanson leg., Malaise. Deposited in UWIM.

Paratypes. COSTA RICA: One female, San Jose, Zurqui de Moravia , 1600 m, iii.1992, P. Hanson leg., Malaise. One female , San Jose, Cerro de la Muerte , 6 km N. San Gerardo, 2800 m, xii.1992 – ii.1993, P. Hanson leg., Malaise. All paratypes deposited in UWIM.

Comments. Centistes hirsutus , C. auricephalus and C. pilosus share a conspicuous pubescence on head and thorax. However, C. hirsutus differs by having the combination of the head being completely yellow and vein Rs+M present as a short stub.

Etymology. The Latin adjective “ hirsutus ”, which means hairy, refers to this species conspicuous pubescence.

Figures

FIGURES 113 – 119. Centistes hirsutus sp. n. 113) Lateral habitus, 114) anterior head, 115) dorsal head, 116) propodeum, 117) mesoscutum, 118) dorsal metasoma, 119) ovipositor sheaths with protruding ovipositor.