Eucremastus rufoantennalis Gadallah, Soliman & Dhafer, 2017, sp. nov.
Creators: name: Gadallah, Neveen S.
name: Soliman, Ahmed M.
name: Al Dhafer, Hathal M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Eucremastus
Eucremastus rufoantennalis

description: Eucremastus rufoantennalis sp. nov. Gadallah & Soliman
(Figs 8 A–E, 9A–D, 10A–C)
Material examined. Holotype ♀: Saudi Arabia, Al-Quwayiyah, Rawdhat Al-Harmalyiah [24°17'50"N, 45°08'49"E] (786m), light trap, 17.iv.2015 (leg. Al Dhafer et al.) [EFC]. Paratype 1♀: Saudi Arabia, Al-Zulfi, Rawdhat Al-Sabalh [26°23'17"N, 44°58'38"E] 670m, light trap, 25.x.2015 (leg. Al Dhafer et al.) [KSMA].
Description. FEMALE (holotype). Body length 9.0 mm, fore wing length 5.0 mm, ovipositor length 4.0 mm.
Head. Antenna with 29 flagellomeres, F1 about 4.6 × as long as wide (Fig. 8 D). Gena short, constricted behind eyes (Fig. 8 D). Occipital carina very thin, greatly interrupted medially. Occiput with dense, irregularly distributed punctures. Head densely shallowly punctate, punctures separated by distances more than a puncture diameter, larger and denser on face (Fig. 8 B); clypeus with fewer large punctures. Ocelli rather small; MOD 1.3 × OOD; IOD 2.0 × OOD (Fig. 8 B, D). Inner eye margins nearly parallel-sided (Fig. 8 B). Clypeus slightly convex in profile, with fine suberect hairs, ventral margin slightly rounded (Fig. 8 B). Malar space about 0.3 × basal width of mandible. Mandible with inner tooth slightly longer than outer one (Fig. 8 C).
Mesosoma. Densely punctate, fewer and widely spaced in middle of mesoscutum and base of scutellum (Fig. 8 E). Notauli distinct, not reaching anterior margin of mesoscutum (Fig. 8 E), axilla densely punctate. Mesopleuron striato-punctate (Fig. 9 A). Propodeum distinctly transversely wrinkled, especially medially (Fig. 8 E). Legs slender, middle tibiae, each with one spur. Claws small and thin, each with three inner teeth.
Wings. Fore wing densely covered with minute setae apically, less dense on disco-submarginal and 2nd discal as well as marginal cells (hardly seen) (Fig. 9 B). Vein Rs slightly concave to nearly straight ventrally; pterostigma narrowly triangular, 3.8 × as long as broad; vein R1 shorter than pterostigma (0.7 ×) (Fig. 9 B). Hind wing (Fig. 9 C) with eight hamuli.
Metasoma. T1 about 1.17 × T2 (Fig. 10 A). Lateral sides of T1 almost touching each other ventrally, obscuring most of S1 (except anteriorly and posteriorly). Posterior margin of T1 and almost all T2 are finely longitudinally striated (Fig. 10 A); T2 with two distinct lateral longitudinal grooves along its whole length (Fig. 10 A, B). The following tergites punctate especially laterally. Ovipositor very slightly downwardly curved apically (Fig. 10 C), with a subapical notch; ovipositor sheath very thin, densely clothed with fine erect sensory setae along its whole length, ending with a specule (Fig. 10 C).
Colour. Generally whitish with the following parts slightly yellowish (Fig. 8 A): T1 subapically (Fig. 10 A), anterior band on T4 and T5, almost all T5 (Fig. 10 B). Anterior margin of T2 and T3 brownish, giving off a shiny hue along the middle area of T2 (Fig. 10 A). Antennal flagellum and mandibular teeth dark brown (Fig. 8 C, D). Ovipositor dark reddish-brown, with yellowish tip, ovipositor sheath entirely black (Fig. 10 C). Wing hyaline with dark brown wing veins (except 1A membranous), pterostigma pale brown (Fig. 9 B).
MALE. Unknown.
Remarks. The holotype female is of type 0 of Mazón & Bordera (2015), however the paratype female belongs to type 1 with both middle tibiae having two unequal spurs (Fig. 9 D).
Etymology. The species name is derived from the Latin (adj.) “ rufus ” related to the reddish-brown antenna.
description: Published as part of Gadallah, Neveen S., Soliman, Ahmed M. & Al Dhafer, Hathal M., 2017, First record of the genus Eucremastus Szépligeti, 1905 (Hymenoptera: Ichneumonidae: Cremastinae) from the Arabian Peninsula, with the description of three new species, pp. 339-354 in Zootaxa 4216 (4) on pages 349-351, DOI: 10.5281/zenodo.242266