taxonID	type	description	language	source
6D601BD946FA1E0297533E616CB3B05F.taxon	diagnosis	Diagnosis. Female puparium. The female puparium of Stylops nassonowi is almost indistinguishable from its sibling species, Stylops aterrimus Newport (compare Figures 6 - 13, with Figures 14 - 19). There is probably no stable character that could differentiate female puparia of both species in terms of their morphology and coloration. However, the following few characters occur in one of the species with a higher probability, or are more pronounced in one of the two species: Stylops nassonowi has the prothoracic flange of the brood opening typically more produced forward, less numerous mandibular sensilla (less than 10), and pigmentation of the prothorax more uniform except a pale apical part to the abdominal segment of the cephalothoracic venter (well visible in Figures 12, 13). By contrast, Stylops aterrimus is more complex in pigmentation than Stylops nassonowi, its dark markings on the ventral surfaces of the meso- and metathorax are usually well-developed and the metathorax has a more or less distinct transverse dark band, ultimately giving its apical half a nuanced darker appearance than the basal half (well visible in Figures 14 - 16). Stylops nassonowi differs from other species (such as when compared to Stylops ater Reichert, Stylops melittae Kirby, Stylops nevinsoni Perkins, Stylops spreta Perkins, and Stylops thwaitesi Perkins) mainly in body and head size (larger than Stylops nevinsoni, Stylops spreta, and Stylops thwaitesi), in the short, dark, basal band (large dark basal band in Stylops ater, Stylops nevinsoni, Stylops spreta, and Stylops thwaitesi), described coloration of the cephalothorax, in the shape of the prothoracic flange of the brood opening (strongly curved in Stylops thwaitesi; straight in Stylops spreta; uniformly curved in Stylops melittae, but slightly curved in Stylops aterrimus and Stylops nassonowi), in the shape of the head corners (strongly curved in Stylops spreta, but only slightly curved in the other species), in the shape and sclerotization of the hypostomal and cephalic ridges (strongly sclerotized and dark in Stylops melittae, but less pronounced in the other species), and the length of the clypeal sensilla. First instar. Body elongate as in other species of Stylops except for Stylops melittae, which has wider abdomen. Head dorsally with two olfactory foveae and four pairs of setae in contrast to Stylops melittae, which has seven pairs of setae and no foveae. The frontal margin of the maxillae is not sagging in Stylops aterrimus and Stylops melittae, in contrast to that of Stylops nassonowi. The cervix is indistinct in Stylops nassonowi rather than more defined in Stylops melittae, the latter possessing a narrower head ventrally. The caudal margins of the dorsal segments have spinullae, except for the pro- and mesothoracic segments, which are covered basally (bases are covered by the tergal margin and therefore not visible rather than fully exposed), while in Stylops melittae some spinullae are covered and there is a gap in the center of dorsum where no spinullae are present. The sternal plates are broader than in Stylops melittae.	en	Straka, Jakub, Alqarni, Abdulaziz S., Juzova, Katerina, Hannan, Mohammed A., Hinojosa-Diaz, Ismael A., Engel, Michael S. (2015): Rediscovered parasitism of Andrenasavignyi Spinola (Hymenoptera, Andrenidae) by Stylops (Strepsiptera, Stylopidae) and revised taxonomic status of the parasite. ZooKeys 519: 117-139, DOI: http://dx.doi.org/10.3897/zookeys.519.6035, URL: http://dx.doi.org/10.3897/zookeys.519.6035
