Dolichogenidea rexhamiltoni Fernandez-Triana & Boudreault 2025, sp. nov.
Creators: name: Fernandez-Triana, Jose L.
name: Boudreault, Caroline
name: Whitfield, James B.
name: Höcherl, Amelie
name: Smith, M. Alex
name: Hallwachs, Winnifred
name: Janzen, Daniel H.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Dolichogenidea
Dolichogenidea rexhamiltoni

description: Dolichogenidea rexhamiltoni Fernandez-Triana & Boudreault sp. nov.
Fig. 114 A – F
Type material.
Holotype. Costa Rica • Female, CNC; Guanacaste, Area de Conservación Guanacaste, Sector Cacao, Sendero Arenales; 10.92471, -85.46738; 1,080 m; 18.xii.2008; D. H. Janzen & W. Hallwachs leg.; Malaise trap; Voucher code: DHJPAR 0031362.
Diagnostic description.
Posterior 0.5–0.6 of T 1 and T 2 mostly with strong sculpture, usually longitudinal striae covering entire surface (but T 2 with small polished area centrally); T 1 parallel-sided to slightly broadening posteriorly; T 2 comparatively very transverse but with anterior and posterior margins strongly arcuate, so that T 2 length is longer medially than laterally and thus T 2 width at posterior margin is usually <3.0 × its length medially; ovipositor ≤ 1.4 × as metatibia length; tegula and humeral complex yellow; pterostigma usually without pale spot at base or with small pale spot occupying <0.1 pterostigma length; most laterotergites, some sternites and sometimes hypopygium yellow to yellow-brown; body length: 2.23 mm; fore wing length: 2.55 mm. This species has strong sculpture (usually longitudinal striae) covering posterior 0.5–0.6 of T 1 and most of T 2. However, unlike the majority of species with similarly strong sculpture, T 2 has a central area which is smooth and also T 2 is very transverse and with anterior and posterior margins strongly arcuate. Because of that unique shape and sculpture pattern of T 2, as well as its metafemur color, it can be separate from all the species with entirely and strongly sculptured T 2 which is not transverse, as well as all the species with smooth T 2 and / or broad T 2. Among similar species, D. rexhamiltoni can be distinguished from D. anniapicadoae because of its much shorter ovipositor, and from D. jorgecarvajali because of different coloration of tegula, humeral complex, laterotergites, sternites and hypopygium.
Distribution.
Costa Rica.
Biology.
No host data available.
DNA barcoding data.
BIN BOLD: AAL 2287 (2 sequences, 2 barcode compliant).
Etymology.
Named in honor of Mr. Rex Hamilton of Florida, USA and Guanacaste Province, Costa Rica in recognition of his recent and ongoing support for the financial and psychological well-being of Area de Conservación Guanacaste (ACG) and its NGO Guanacaste Dry Forest Conservation Fund (GDFCF) for the GDFCF BioAlfa initiative.
description: Published as part of Fernandez-Triana, Jose L., Boudreault, Caroline, Whitfield, James B., Höcherl, Amelie, Smith, M. Alex, Hallwachs, Winnifred & Janzen, Daniel H., 2025, A revision of the parasitoid wasp genus Dolichogenidea Viereck (Hymenoptera, Braconidae) in the Neotropical region, with the description of 102 new species, pp. 1-250 in ZooKeys 1237 on pages 1-250, DOI: 10.3897/zookeys.1237.141007