taxonID	type	description	language	source
03854F3F4466FFA981C5FE1EFD8449C4.taxon	description	(Figs 1 – 5)	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4466FFA981C5FE1EFD8449C4.taxon	materials_examined	Type locality. Czech Republic: Southern Moravia, Horní Bojanovice env. Type material. HOLOTYPE: ♀ (NMPC), cephalothorax on triangular mounting card: “ CZECH REPUBLIC, Mor. / mer., Horní Bojanovice / 222 m, pan traps / 48.942386, 16.808153 / M. Štrobl lgt., 03.07.2022 ”. Host: Rophites quinquespinosus. PARATYPES: AZERBAIJAN: 1 ♀ (JSPC), Altiaghach env., Altiaghaj NP, 11. vi. 2012, swept, M. Volf lgt., host: Rophites clypealis. GREECE: 1 ♀ (JSPC), Thessalia prov., Ossá Mt., 8. viii. 2010, swept, J. Halada lgt., host: Rophites hartmanni. SLOVAKIA: 1 ♀ (MMBC), Štúrovo, Svodín, 27. vii. 1961, swept, E. Staněk lgt., host: R. quinquespinosus; 2 ♀♀ (NMPC), Fiľakovo env., 13. vii. 1938, swept, V. Zavadil lgt., host: R. quinquespinosus. TURKEY: 12 ♀♀ (NMPC), Kahramanmaraş prov., Budaklı env., 1934 m, 37.655694, 37.041111, 5. vii. 2011, swept, J. Straka lgt., host: Rophites clypealis. Other material. CZECH REPUBLIC: BOHEMIA: 1 EMP (NMPC), Jílové u Prahy env., 16. vii. 1906, Holík lgt., host: R. quinquespinosus.	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4466FFA981C5FE1EFD8449C4.taxon	diagnosis	Diagnosis of female cephalothorax. Differing from Eurystylops oenipontana mainly in size and shape of cephalothorax. Size of cephalothorax larger in E. ogloblini of cephalothorax (holotype); C – detail of ventral side of cephalothorax (paratype); D – detail of dorsal side of cephalothorax (paratype). Abbreviations: cll – clypeal lobe, dlf – dorsal labral field of labral area, mp – membranous patch of cuticle, pp – pigmented papillae, sbhp – segmental border between head and prothorax, sbmm – segmental border between mesothorax and metathorax, sbpm – segmental border between prothorax and mesothorax. (length 0.92 – 0.96 mm, width 0.72 – 0.80 mm) in comparison with E. oenipontana (length 0.50 – 0.58 mm, width 0.64 – 0.73 mm). Lateral part of abdominal segment I below spiracles rounded, not forming spiracular corner as in E. oenipontana (sc, Fig. 7 A). Head of E. ogloblini shorter than cephalothorax: length proportion of head / cephalothorax 0.30 but 0.36 – 0.40 in E. oenipontana. Cuticle of prothorax (prosternum) uniformly pale orange in E. ogloblini, completely reticulate, posteriorly with transversal group of pigmented papillae (pp, Fig. 3 A); E. oenipontana in contrast only rarely with thoracic papillae. Very variable membranous patches of cuticle present on mesosternum and anterior part of metasternum in E. ogloblini (mp, Fig. 3 A), but completely absent in E. oenipontana. Features visible on SEM images: Clypeal region of E. ogloblini not well delimited from labral area (sbcl, Fig. 4 C), and labral area distinctly constricting clypeal area or even overlapping it and protruding from head capsule (dlf; Figs 3 A, C). In contrast, clypeal region well delimited from labral area in E. oenipontana (sbcl, Fig. 8 C), and labral area well visible in ventral view, not constricting clypeal area. Mandibular tooth small in E. ogloblini (mdt, Fig. 5 A), but conspicuously large in E. oenipontana (mdt, Fig. 8 C). Description of female cephalothorax. Shape and colouration. Cephalothorax (holotype) length 0.72 mm, width 0.92 mm. Shape slightly variable but always wider than long, length 0.92 – 0.96 mm, width 0.72 – 0.80 mm. Flattened in cross-section, semi-elliptic. Anterior head margin not protruding from cephalothorax capsule. Thorax distinctly widening posteriorly. Pro-mesothoracic and meso-metathoracic segmental border very slightly constricted laterally, indistinct in some specimens (sbpm, sbmm; Fig. 3 C). Colouration from pale yellow to dark brown. Cephalothorax with conspicuous colour pattern with abdominal part of cephalothorax darker than anterior part. Head capsule. Length of head about one third of cephalothorax. Length proportion of head / cephalothorax 0.30 including lateral cephalic extension. Width of birth opening 0.46 (0.46 – 0.56) mm. Head colouration predominantly pale, without dark colouration. Clypeal region not well delimited from labral area (sbcl, Fig. 4 C), labral area significantly constricting clypeal area (holotype), in some specimens even overlapping clypeal area and protruding from head capsule (dlf; Figs 3 A, C). Apical margin of clypeal area blunt, not forming protruding clypeal lobe (cll, Fig. 3 A). Clypeal surface smooth, with distinctly visible sensilla present and more or less evenly scattered (cls, Fig. 4 C). Cuticle of frontal region slightly wrinkled, reticulated (fr, Fig. 4 D). Segmental border between head and prothorax indicated by distinct suture on dorsal side (sbhp; Figs 3 D, 4 D). Head and prothorax distinctly separated by birth opening ventromedially, and laterally by indistinct suture as in Stylops (LÖWE et al. 2016).	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4466FFA981C5FE1EFD8449C4.taxon	description	Supraantennal sensillary field slightly wrinkled, reticulated, with distinctly recognisable sensilla. Not delimited by furrow medially, border not recognisable. Clypeal area not clearly delimited from supraantennal sensillary field, clypeal sensilla hardly distinguishable from sensilla of supraantennal sensillary field (ssf, cl; Fig. 4 D). Antenna. Vestiges of antennae absent. Labrum. Ventral field elliptic, not protruding. Dorsal field elongated, slightly arcuate, protuberant, ~ 5 – 6 × (5 × in holotype) wider than long in midline (dlf, Fig. 4 C). Border between dorsal and ventral labral field not well delimited. Setae of dorsal field present or absent (in holotype). Dorsal field overlapping clypeal area from ventral side in some specimens. Mandible anteromedially directed at angle of 30 – 35 ° (35 ° in holotype) and slightly protruding from mandibular capsule (md, Fig. 4 C). Mandibular bulge more or less distinctly raised, with several indistinct sensilla. Cuticle wrinkled laterally, completely smooth medially (Fig. 5 A). Tooth small, narrow, pointed apically (mdt, Fig. 5 A). Maxilla completely absent and fused with labial area, forming maxillolabial complex (mxlc, Fig. 2 C). Surface of maxillolabial complex completely smooth. Maxillary base fused, part of maxillolabial complex. Vestige of maxillary palp absent. Submaxillary groove present, produced posterolaterally, curved along birth opening (smxg, Fig. 4 C). Labium. Labial area indistinct, only delimited anteriorly by mouth opening and posteriorly by birth opening. Laterally completely fused with maxillae, without visible borders. Surface completely smooth. Mouth opening. medially straight, laterally arcuate, area around mouth opening slightly lighter in colour (os, Fig. 4 C). Thorax. Pro-mesothoracic and meso-metathoracic borders indistinct on ventral side, borders laterally more visible (sbpm, sbmm; Fig. 3 C), medially separated by indistinct impressions (sbpm, sbmm; Fig. 4 A). Distinct change in cuticular sculpture visible on pro-mesothoracic borders, but meso-metathoracic borders nearly invisible on SEM micrographs and colour photo (pst, mst, mtst; Fig. 4 A). On dorsal side, pro-mesothoracic and meso-metathoracic borders indistinct, almost unrecognisable. Border between metathorax and abdomen indicated by change in cuticular surface structure (asI, Fig. 4 A). Cuticle of prothorax (prosternum) uniformly pale orange, completely reticulate, posteriorly with transverse group of more strongly pigmented papillae. Pigmented papillae well visible in holotype (pp, Fig. 3 A), in some specimen indistinctly visible (Fig. 3 C). Anterior edge of prosternal extension not distinctly translucent. In ventral view, mesosternum reticulated, lateral parts also wrinkled. Metasternum completely reticulated, surface extending laterally, almost reaching abdominal spiracles. Membranous patches of cuticle presented on mesosternum and anterior part of metasternum, variable in shape, distinct in holotype (mp, Fig. 3 A) but in some specimen not well visible (Fig. 3 C). Pigmented papillae present posteriorly on metasternum. Prothorax, mesothorax and metathorax almost completely fused dorsally, with indistinct borders. Surface smooth or slightly wrinkled, translucent in comparison with head capsule on dorsal side (Figs 3 B, D). Abdominal segment I and spiracles. Sclerotised abdominal part of abdominal segment I smooth dorsally, slightly wrinkled on ventral side. Colouration varies from dark brown, contrasting to pale metathorax (in holotype), to pale orange in some other specimens. Borders between smooth abdominal segment I and reticulated or wrinkled metathorax well recognisable on ventral side, in dorsal view distinct laterally but indistinct medially. Spiracles located on posterior half of cephalothorax, not elevated, with anterolateral orientation. Cuticular spines present on lateral region of abdominal segment I (cus, Fig. 5 B). Lateral part of abdominal segment I below spiracles rounded, not forming spiracular corner. Male and primary larvae. Unknown.	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4466FFA981C5FE1EFD8449C4.taxon	etymology	Etymology. Named in honour of Alexander A. Ogloblin, an expert of Strepsiptera and Hymenoptera, who worked several years in the National Museum in Prague and significantly contributed to the development of the collections of our Department of Entomology.	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4466FFA981C5FE1EFD8449C4.taxon	biology_ecology	Hosts. Rophites clypealis Schwammberger, 1976; R. hartmanni Friese, 1902 and R. quinquespinosus Spinola, 1808. Phylogenetic relationships. Related to Eurystylops oenipontana Hofeneder, 1949 (Benda & Straka unpubl.)	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4466FFA981C5FE1EFD8449C4.taxon	distribution	Distribution. Western Palaearctic (Fig. 10). Note. A host specimen with an empty male puparium (EMP) is the only evidence of the existence of a male in the genus Eurystylops. This specimen was studied by A. A. Ogloblin and was labelled as “? Rophitostylops n. gen. ” (Fig. 2 E). We also examined the collection of V. Székessy deposited in HNHM. Although the records of stylopised Rophites quinquespinosus and R. hartmanni were published by SZ ḖKESSY (1959), the material is missing in the collection. There is a note in his list of species in the collection that the material is lost and could thus not be described (KINZELBACH 1978).	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4462FFA782D3FA2EFB724A85.taxon	description	(Figs 6 – 9)	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4462FFA782D3FA2EFB724A85.taxon	materials_examined	Material examined. CZECH REPUBLIC: 1 ♀ (JSPC), Malé Březno env., České středohoří Protected Landscape Area, 16. vii. 2006, swept, J. Batelka lgt., host: Dufourea dentiventris; 1 ♀ (NMPC), Arnultovice env., 9. vii. 1940, swept, K. Špaček lgt., host: D. dentiventris; 1 ♀ (NMPC), Praha env., Radotín, 30. vi. 1964, swept, B. Tkalců lgt., host: D. dentiventris; 1 ♀ (NMPC), Strančice env., vii. 1960, swept, V. Kočmíd lgt., host: D. dentiventris; 1 ♀ (NMPC), Vrané nad Vltavou env., vii. 1954, swept, V. Kočmíd lgt., host: D. dentiventris; 1 ♀ (NMPC), Vitín env., České středohoří PLA, 10. vii. 1921, collector unknown, host: D. dentiventris; 1 ♀ (NMPC), Polička env., Františky, 24. vii. (without year), swept, L. Duda lgt., host: D. dentiventris; 1 ♀ (NMPC), Všenory env., 27. vii. 1912, swept, O. Šustera lgt., host: D. dentiventris; 3 ♀♀ (NMPC), Malá Skála env., without date, swept, J. Obenberger lgt., host: D. dentiventris; 1 ♀ (NMPC), Káraný nad Labem env., without date, swept, J. Obenberger lgt., host: Dufourea inermis; 2 ♀♀ (NMPC), Přebuz env., Přebuz moorland, 12. viii. 2011, P. Kment lgt., host: D. dentiventris; 6 ♀♀ (JSPC), Přebuz env., Přebuz moorland, 21. vii. 2021, J. Straka lgt., host: D. dentiventris. SWITZERLAND: 1 ♀ (EEC), Haldenstein, 8. viii. 1997, swept, A. Müller lgt., host: D. inermis; 1 ♀ (JSPC), Leuk env., 8. vii. 2008, combined trap, Y. Chittaro lgt., host: D. dentiventris.	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4462FFA782D3FA2EFB724A85.taxon	diagnosis	Diagnosis of female cephalothorax. See diagnosis of the female cephalothorax of Eurystylops ogloblini sp. nov.	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4462FFA782D3FA2EFB724A85.taxon	description	Redescription of female cephalothorax. Shape and colouration. Cephalothorax variable but always wider than long, length 0.50 – 0.58 mm, width 0.64 – 0.73 mm. Flattened in cross-section, semi-elliptic. Anterior head margin not protruding from cephalothoracic capsule or only very slightly. Thorax slightly (Fig. 7 C) or distinctly (Fig. 7 A) widening posteriorly. Pro-mesothoracic and meso-metathoracic segmental border not constricted laterally, border unrecognizable. Colouration from pale yellow to dark brown. Cephalothorax with conspicuous colour pattern with posterolateral parts darker than anterior part. Head capsule. Length of head slightly more than one third of cephalothorax. Length proportion of head / cephalothorax 0.36 – 0.40 including lateral cephalic extension. Width of birth opening 0.36 – 0.42 mm. Head predominantly pale, without dark areas. Clypeal region well delimited from labral area (sbcl, Fig. 8 C); labral area well visible from ventral side, not constricting clypeal area. Apical margin of clypeal area blunt or forming slightly protruding clypeal lobe (cll, Fig. 7 C). Clypeal surface smooth with distinctly visible sensilla present on clypeal surface, more or less evenly scattered (cls, Fig. 8 C). Cuticle of frontal region distinctly wrinkled horizontally (fr, Fig. 4 D). Segmental border between head and prothorax indicated by distinct suture on dorsal side (sbhp; Figs 7 B, 8 D). Head and prothorax distinctly separated by birth opening ventromedially, and laterally by unrecognisable suture as in Stylops (LÖWE et al. 2016). Supraantennal sensillary field smooth, with distinctly recognisable sensilla. Not delimited by furrow medially, without recognisable border. Clypeal area not clearly delimited from supraantennal sensillary field, clypeal sensilla hardly distinguishable from sensilla of supraantennal sensillary field (ssf, cl; Fig. 4 D). Some sensilla also dispersed medially between both sensillary fields (ssf, Fig. 4 D). Antenna. Vestiges of antennae absent. Labrum. Ventral field elliptic, not protruding. Dorsal field elongated, slightly arcuate, flat, not protuberant, ~ 5 – 6 × wider than long in midline (dlf, Fig. 8 C). Border between dorsal and ventral labral field well delimited. Dorsal field with several setae, not overlapping clypeal area. Mandible anteromedially directed at angle of 35 – 45 °, not protruding from mandibular capsule (md, Fig. 8 C). Mandibular bulge more or less distinctly raised, sensilla not visible. Cuticle wrinkled laterally, completely smooth medially (Fig. 5 A). Mandibular tooth conspicuously large, narrow, pointed apically (mdt, Fig. 8 C). Maxilla completely absent as individual structure, fused with labial area, both forming maxillolabial complex (mxlc, Fig. 8 C). Surface of maxillolabial complex completely smooth. Maxillary base fused, part of maxillolabial complex. Vestige of maxillary palp absent. Submaxillary groove present, produced posterolaterally, curved along birth opening (smxg, Fig. 8 C). Labium. Labial area indistinct, only delimited anteriorly by mouth opening and posteriorly by birth opening. Laterally completely fused with maxillae, without visible borders. Surface completely smooth. Mouth opening medially straight or concave, laterally arcuate, area around mouth opening slightly lighter in colour (os, Fig. 8 C). Thorax. Pro-mesothoracic and meso-metathoracic borders indistinct on ventral side, hardly recognisable on colour photos, but more distinct on SEM image (sbpm, sbmm; Fig. 8 A), medially separated by indistinct impressions. Change in cuticular sculpture on pro-mesothoracic borders and meso-metathoracic borders hardly visisble on SEM and colour images (pst, mst, mtst; Fig. 8 A). Pro-mesothoracic and meso-metathoracic borders indistinct dorsally, almost unrecognisable. Border between metathorax and abdomen recognisable as change in cuticular surface structure (asI, Fig. 8 A). Cuticle of prothorax (prosternum) uniformly pale orange, completely reticulated, posteriorly without transverse group of pigmented papillae. Rarely some papillae present on prosternum but scattered, not regularly arranged. Anterior part of prosternal extension not conspicuously translucent, only outermost edge slightly transparent. Mesosternum reticulated ventrally, lateral parts mostly smooth. Metasternum completely reticulated, surface nearly reaching abdominal spiracles laterally. Membranous patches of cuticle completely absent on mesosternum and anterior part of metasternum. Pigmented papillae lacking posteriorly on metasternum. Prothorax, mesothorax and metathorax completely fused dorsally, but indistinct borders recognisable. Surface smooth or slightly wrinkled, dorsally translucent in comparison with head capsule (Figs 7 B, D). Abdominal segment I and spiracles. Sclerotised abdominal part of abdominal segment I smooth on dorsal side, slightly wrinkled ventrally. Colouration of abdominal segment I variable from dark brown, in contrast to pale metathorax, to pale orange in some specimens. Borders between smooth abdominal segment I and reticulated or wrinkled metathorax well recognisable in ventral view, dorsally distinct laterally but indistinct medially. Spiracles located on posterior third of cephalothorax, not elevated, with anterolateral orientation. No distinct cuticular spines present on lateral region of abdominal segment I. Lateral part of abdominal segment I below spiracles forming distinct spiracular corner (sc, Fig. 7 A). Male and primary larvae. Unknown.	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4462FFA782D3FA2EFB724A85.taxon	biology_ecology	Hosts. Dufourea dentiventris (Nylander, 1848), D. inermis (Nylander, 1848). Phylogenetic relationships. Related to Eurystylops ogloblini sp. nov. (Benda & Straka unpubl.).	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
03854F3F4462FFA782D3FA2EFB724A85.taxon	distribution	Distribution. Central Europe: Austria (HOFENEDER 1949), Czech Republic (this study), Germany (KINZELBACH 1971), Switzerland (HOFENEDER 1949) (Fig. 11).	en	Benda, Daniel, Straka, Jakub (2025): A new species of the genus Eurystylops (Strepsiptera: Stylopidae) rediscovered after more than 100 years from Rophites bees (Hymenoptera: Halictidae). Acta Entomologica Musei Nationalis Pragae 65 (1): 81-94, DOI: 10.37520/aemnp.2025.007, URL: https://doi.org/10.37520/aemnp.2025.007
