Centistes marshi Aguirre, Almeida & Shaw, sp. n.
Creators: name: Aguirre, Helmuth
name: Almeida, Luis Felipe Ventura De
name: Shaw, Scott Richard
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Centistes
Centistes marshi

description: Centistes marshi Aguirre, Almeida & Shaw, sp. n.
(Figs 141–147)
Female. Body length (Fig. 141): 2.9–3.5 mm. Body color: head black except clypeus light brown and antenna basally light brown turning dark brown towards the apex; mesosoma black with legs yellow except hind tarsus and apical half of hind tibia dark brown; wings hyaline; metasoma black-dark brown. Head (Figs 142–143): antenna with 24–26 flagellomeres; flagellar length/width ratios as follows: F1 = 3.7, F10 = 2.5, last flagellomere = 2.3; last flagellomere terminating apically in a sharp point; pedicel 1.2 × longer than wide; scape 1.7–1.8 × longer than wide; mandibles when closed overlapping for 0.5–0.7 × mandible length; mandible width basally 0.4–0.5 × mandible length; malar space 0.2–0.3 × eye height, and 1.0–1.3 basal mandible width; gena pubescent, except smooth around eye; shortest distance between eyes 1.2 × greater than clypeus width; eye in lateral view 1.8–1.9 × taller than wide; lateral ocellus separated from compound eye by a distance 1.2–1.4 × ocellar width; frons glabrous, except sparse setae around eyes; vertex with a few scattered setae; temple with few scattered setae; temple width 0.7–0.8 × 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 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. 145); pit on mesoscutum large and oval (Fig. 145); scutellar sulcus with one carina; 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 either with or without strong transversal carina, and with a median-longitudinal dorsal carina present (Fig. 144); propodeum surfaces carinate-rugose except smooth areas on dorsum. Legs: hind coxa 1.5–1.6 × longer than middle coxa; hind femora length 4.7-5.0 × maximum width; hind tibia length 9.6–10.0 × longer than maximum width; hind tibial spur 0.3 × as long as hind basitarsus; ratio of hind tarsomeres from basitarsus apically 25:14:12:8:14. Wings: fore wing length 3.2–3.8 mm; pterostigma 3.2 × longer than maximum width; length of marginal cell 2R1 along anterior wing margin equal to length of pterostigma; vein r-rs 0.4 × as long as pterostigma width; vein Rs+M either absent or present as a short stub; vein m-cu basal with vein RS; hind wing with three sickle-shaped hamuli. Metasoma: first tergite basally 0.5 × as wide as apical width, and 1.4–1.6 × longer than apical width; sculpture of first tergite longitudinally costate with costae almost parallel (Fig. 146); spiracle of tergum one situated on lateral margin near the half of segment; hypopygium short and ventrally convex, with dorsal margin rounded; ovipositor sheath 3.3–4.4 × longer than basal width, and 1.2–1.3 × as longer as basitarsus; ovipositor sheath densely pubescent, and terminating in a sharp point (Fig. 147).
Male. Unknown.
Holotype female. COSTA RICA: San Jose, 26 km N. San Isidro just S. of Division, 2100 m, ii–iv. 1993, P. Hanson leg., Malaise, secondary growth. Deposited in UWIM.
Paratypes. COSTA RICA: One female, San Jose, 26 km N. San Isidro, just S. of Division, 2100 m, ii-iv.1993, P. Hanson leg., Malaise, Secondary growth. One female, San Jose, 26 km N. San Isidro just S of Division, 2100 m, viii–ix.1991, P. Hanson, Malaise, secondary growth. One female, San Jose, 26 km N. San Isidro just S of Division, 2100 m, ii–iv.1993, P. Hanson leg., Malaise, secondary growth.
Comments. Centistes marshi, C. achterbergi and C. longicaudatus have long, narrow, and, more or less, parallel-sided ovipositor sheaths. But, C. marshi has the unique combination of black-dark brown face, brown stigma on the front wing, and bulging eyes in dorsal view (Figs 142–143).
Etymology. This species is named in honor of Dr Paul Marsh, eminent hymenopterologist who has greatly contributed to the knowledge of the Costa Rican Braconidae.
description: Published as part of Aguirre, Helmuth, Almeida, Luis Felipe Ventura De & Shaw, Scott Richard, 2017, Revision of the genus Centistes (Hymenoptera: Braconidae: Euphorinae: Centistini) of Costa Rica, pp. 1-46 in Zootaxa 4216 (1) on pages 33-34, DOI: 10.5281/zenodo.229787