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Hymenoptera: Braconidae: Rogadinae), with Description of Two New Species Athacryvac gen. n. from French Guiana (Hymenoptera: Braconidae: Rogadinae), with description of two new species Y. Braet & C. van Achterberg Athacryvac gen. n. (Hymenoptera: Braconidae: Rogadinae) is described with two new species A. alternatus sp. n. (type species) and A. fuscatus sp. n. from French Guiana. Both species are illustrated and a key is provided. Y. Braet, Faculté Universitaire des Sciences Agronomiques de Gembloux, Entomologie fonctionnelle & évolutive, 2, Passage des déportés, B-5030 Gembloux, Belgium. [email protected] C. van Achterberg*, Department of Terrestrial Zoology, Netherlands Centre for Biodiversity Naturalis, Postbus 9517, 2300 RA Leiden, Netherlands. Cees. [email protected] Introduction do not fit our current generic concepts of the closest The family Braconidae (Hymenoptera) is very taxa Aleiodes and the genera of the Stiropiini, even if diverse in tropical regions and the Neotropical one of these species lacks the vein 1r-m of fore wing, region is no exception. For several years Malaise traps a character only found until now in Choreborogas have been used by the first author in French Guiana Whitfield, 1990 and Polystenidea Viereck, 1911. Our (Braet 2006). The collected material contains many new taxa are considered to belong to one new genus new species and several new genera of Braconidae; with two different species, and are here described to some of the new taxa are described in this paper. provide taxonomical names for a forthcoming paper The subfamily Rogadinae Foerster, 1862 is a large with molecular analyses of the subfamily. Rogadinae cosmopolitan subfamily represented in New World are koinobiont endoparasitoids of mainly macrolepi- by 215 described species (Yu et al. 2009). Although dopteran caterpillars and are unique in their habit Aleiodes Wesmael, 1838 and Rogas Nees, 1819 are of mummifying the host caterpillar (Shaw & Hud- very common in the Neotropical region, there is dleston 1991). very little revisionary work available for this region, For identification of the Braconidae subfamilies, only some smaller genera are revised, e.g. Quicke et we refer to van Achterberg (1988, 1993, 1994) and al. (1996) and Areekul & Quicke (2006) revised the Wharton et al. (1997). Neotropical species of the genus Yelicones Cameron, 1887, and van Achterberg (1995) revised the three genera of the tribe Stiropiini. Among the nine genera Material and methods of Rogadinae recorded from French Guiana (Braet The terminology used in this paper, especially 2006), the first author discovered several specimens for wing venation, follows van Achterberg (1988, (refered as NG09 (aff. Aleiodes) in Braet 2006) which 1994). All SEM photos have been realized with a Tijdschrift voor Entomologie 154: 283–290, Figs 1–27. [ISSN 0040–7496]. http://www.nev.nl/tve © 2011 Nederlandse Entomologische Vereniging. Published 1 December 2011. Downloaded from Brill.com10/01/2021 11:11:22PM * Corresponding author via free access 284 Tijdschrift voor Entomologie, volume 154, 2011 Philips ESEM XL30, at low vacuum (0.1 Torr) from large (Figs 10, 17, 30); laterope shallow; second uncoated specimens. tergite longitudinally and irregularly striate-rugose The colour photographs have been made with an and with a medio-longitudinal carina but usually no Olympus SZX12 motorized stereomicroscope with triangular basal area (Figs 10, 30), but rarely devel- AnalySIS Extended Focal Imaging Software. oped (Fig. 17); spiracle of second tergite in notum; All examined specimens are deposited in the follow- second metasomal suture narrow; third tergite rugu- ing collections: Faculté Universitaire des Sciences lose basally and remainder more or less coriaceous; Agronomiques, Gembloux, Belgium (FUSAGx) and second and third metasomal tergite with lateral the Netherlands Centre for Biodiversity Naturalis, crease; ovipositor sheath short and somewhat wid- Leiden, Netherlands (RMNH). ened (Figs 12, 20); hypopygium of female ventrally straight or nearly so and medium-sized (Fig. 12); length of body 3.8–5.1 mm. Systematic account Biology. Unknown. Distribution. Neotropical (French Guiana). Notes. Athacryvac gen. n. The two new species here described do not run well in the key by Shaw (1997), because of the Figs 1–30 complicated first couplet; vein 1-M of the hind Type species. Athacryvac alternatus sp. n. wing is much longer than vein M+CU, but it does Etymology. An arbitrary combination of letters. Gen- not fit the rest of couplet 1a and obviously it does der: masculine. not belong in the tribe Stiropiini (van Achterberg, Description. Antenna 2.5–2.6 times as long as fore 1995). The body is longer than 3 mm, the metasoma wing and 1.7–1.9 times as long as body (Figs 3, is not carapace-like, the tergites are not granulate, 12, 28), apical segment with distinct spine (Fig. 2); the large smooth triangular area of the sides of the apex of scapus strongly oblique (Figs 6, 24); palpi scutellum and the propodeal areola are absent, the of male slender (Fig. 27); malar suture absent; eyes tarsal claws are large and the antenna has many more shallowly emarginate; occipital carina reduced ven- than 14 segments. If in the key by Shaw the alterna- trally (Fig. 27), not meeting hypostomal carina tive is followed, then these species run to the cos- and medio-dorsally complete; prepectal carina and mopolitan genus Aleiodes. They could be separated precoxal sulcus present; middle lobe of mesoscutum from this last genus by the following synapomo- in lateral view anteriorly vertical; notauli narrow and phies: the complete mid-longitudinal carina of the complete (Figs 9, 13); scutellar sulcus comparatively metanotum, the subbasal semi-circular area formed wide and with 1–2 carinae (Fig. 13); side of scutel- by the dorsal carinae of the first metasomal tergite lum normal, without large smooth triangular area (Figs 10, 17, 30), the strongly oblique apex of the posteriorly; metanotum with median carina, obtuse; scapus (Figs 6, 24) and the very small vannal cell of dorsal half of propodeum with a medio-longitudinal the hind wing, caused by the very short vein M+CU carina and no distinct areola (Fig. 9); vein 2-SR+M (Figs 1, 5). Additionally, the comparatively slender of fore wing long and hardly pigmented (Figs 1, 5); first metasomal tergite (Figs 10, 17, 30) and the vein r-m of fore wing absent (Fig. 1) or present very long antenna (Figs 3, 12, 28) could be putative (Fig. 5); vein r of fore wing about as long as vein synapomorphies, which separate them also from the 2-SR; vein 2-SR of fore wing vertical; vein 1-SR+M genus Aleiodes. According to unpublished molecular of fore wing straight to weakly sinuate; vein cu-a of data (D.L.J. Quicke, in litt.), these new species are fore wing far postfurcal; first subdiscal cell of fore recovered as members of a basal clade which seems wing closed; vein 1-M of hind wing much longer to link Rogadini and Stiropiini (and perhaps Faci- than vein M+CU and vannal cell very small (Figs 1, torini). This evidence allows us to include them in 5); vein m-cu of hind wing absent; marginal cell of the new genus Athacryvac gen. n. hind wing widened apically; fore wing evenly setose and subhyaline; hind wing narrow (Figs 1, 5); tarsal Key to species of the genus Athacryvac claws robust and simple (Figs 7, 18); hind and mid- dle tibial spurs straight and setose; inner apex of hind 1. Vein r-m of fore wing absent (Fig. 1); meso- tibia with distinct comb; metasoma not carapace-like soma laterally and ventrally brownish-yellow and without distinct granulate sculpture; subbasal (Fig. 21); head dorsally with satin sheen and semi-circular area formed by dorsal carinae of first distinctly granulate-coriaceous (Figs 11, metasomal tergite; first tergite comparatively slender 16); 10–18 apical antennal segments white and movably joined to second tergite; first tergite (Fig. 26); first metasomal tergite compara- with complete medio-longitudinal carina; dorsope tively robust, its length 1.6–1.9 times its Downloaded from Brill.com10/01/2021 11:11:22PM via free access Braet & van Achterberg: Athacryvac gen. n. from French Guiana. 285 apical width (Figs 10, 17); second metasomal depression 0.4 times width of face (Fig. 8); frons (less suture distinctly curved dorsally (Fig. 17) .. anteriorly) and vertex finely granulate-coriaceous ................................ A. alternatus and with satin sheen; frons with weak carina laterally – Vein r-m of fore wing present (Fig. 5); meso- and a superficial median groove. soma laterally (except pronotum) and ven- Mesosoma. Length of mesosoma 1.5 times its height; trally dark brown (Fig. 28); head dorsally pronotum broadly crenulate medially and postero- distinctly shiny and superficially granulate- ventrally, remainder superficially coriaceous or coriaceous; apical antennal segments dark smooth; mesopleuron finely granulate-coriaceous; brown (Fig. 29); first tergite comparatively precoxal sulcus shallow and broadly rugose; meta- slender, its length about 2.3 times its apical pleuron finely coriaceous dorsally and coarsely cari- width (Fig. 30); second metasomal suture nate ventrally; anteriorly middle lobe of mesoscutum nearly straight dorsally (Fig. 30) .... A. fuscatus without distinct antescutal depression; mesoscutum densely granulate and posteriorly with V-shaped Athacryvac alternatus sp. n. carina near narrow and smooth notauli; scutellar sulcus with three closely spaced transverse carinae; Figs 1–4, 5–27 scutellum finely granulate; surface of propodeum Type material. Holotype, / (RMNH): “Guyane fran- reticulate-rugose. çaise, Saül, Crique popote, Mont Belvédère, i.2001, Wings. Fore wing (Fig. 1): vein r-m absent; r:3- (Malaise trap, 3°36’N 53°10’W, sur chablis [on fallen SR+SR1:2-SR:2-SR+M = 8:44:8:7; vein 2-M scle- trees]), J. Tarin”. Paratypes (5?, 3/): 1/ (FUS- rotized; vein 1-SR+M nearly straight; vein 1-M AGx), same label data as holotype; 1? (RMNH), curved posteriorly; 1-CU1:2-CU1 = 7:13; vein id., but ii.2001; 4?, 3/ (FUSAGx): 1 ?, “Guyane CU1a sclerotized basally.
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