Aclista angusta
Creators: name: Macek, Jan
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Diapriidae
Aclista
Aclista angusta

description: Aclista angusta (Kieffer, 1909)   
(Figs. 1, 9, 17, 25)  
 Anectata (Anectata) angusta Kieffer, 1909: 534.   
 Anectata angusta: KIEFER (1916): 508, 512.   
 Aclista angusta: NIXON (1957): 68, 80.   
 Aclista (Anecoreta) angusta: WALL (1967): 163.   
 Anectata (Anectata) fuscicornis Kieffer, 1909: 529, syn. nov.   
 Anectata (Anectata) levifrons Kieffer, 1909: 530, syn. nov.   
 Anectata (Anectata) soror Kieffer, 1909: 532, syn. nov.   
 Oxylabis marshalli Kieffer, 1907: 6, 8, syn. nov.   
 Oxylabis (Acanthopsilus) marshalli: KIEFFER (1908): 395.   
 Acanthopsilus marshalli: KIEFFER (1916): 374.   
 Type locality. France, Forêt de St. Germain.   
 Type material examined. Aclista angusta. HOLOTYPE: ♀, ‘ Foret de St. Germain // Holotypus 1909 / Anectata (Anectata) angusta Kieffer’ (MNHN). Aclista soror. HOLOTYPE: ♀, ‘Mesnil-le Roy // Holotypus 1909 / Anectata (Anectata) soror Kieffer’ (MNHN).   
 Additional material examined. CZECH REPUBLIC: BOHEMIA bor., Doupovské hory Mts., Úhošťany hill (5645), 3.vi.1981, 3 spec. BOHEMIA centr., Praha – Kunratice (5952), 29.v.1981, 1 spec.; Praha – Nebušice (5852), 31.v.1982, 4 spec.; Praha – Krč (5952), 12.vi.1985, 9 spec.; Medník Nature Reserve (6152), 16.vi.1985, 3 spec. BOHEMIA mer., Dobronice (6652), 8.vii.1985, 3 spec.; Hluboká nad Vltavou env., Stará obora forest (6952), 6.vii.1982, 1 spec. BOHEMIA or., Dobruška env., Mělčany (5762), 27.v.2002, 1 spec.; Králický Sněžník Nature Reserve, Mlýnský potok brook (5866), 29.vi.2001, 1 spec. MORAVIA mer., Třešť env., Špičák hill (6759), 20.vi.1983, 1 spec. SLOVAKIA centr., Belianské Tatry National Park, Bielovodská dolina valley (6787), 12.viii.1982, 1 spec.; Nízké Tatry National Park: Latiborská hola hill, 9.viii.1994, 1 spec.; Kyslá valley, 11.viii.1982, 3 spec., all J. Macek lgt. & det. (NMPC). HUNGARY centr., Tompa, 7.-9.iv.1977, 55 spec., Szabó lgt.(NMPC, HNMH). POLAND centr., Warszawa, J. Sobieskiego Nature Reserve, 1.vi.1981, 1 spec., Ekipa lgt., J. Macek det. (NMPC). GERMANY: BAVARIA, Spiegelau, 7.-11.ix.1995, 1 spec., Barták lgt., J. Macek det. (NMPC).   
 Diagnosis. Habitus slender, petiole narrow; mandibles short, shortly overcrossing, malar area smooth, postmalar area impressed; head triangular in frontal view, genae converging; mouth aperture narrow; metascutellum prominent, conical; radial cell short and narrow; marginal vein almost as long as postmarginal vein; lower plicae of propodeum strongly projecting posteriorly; praepygidium with tightly abutted, narrow segments; medial furrow of macrotergite long with adjacent strong striae; fore tibiae in males with homogeneous longer pilosity.   
 Male. Differs from the female by long setiform antennae and a slight emargination of flagellomere 1.   
 Variability. The species displays some variation in the following characters: colour (including appendages) piceous to dark brown; antennae slender to stout; distal flagellomeres quadrate to slightly transverse; petiole slender to stout; petiole sculpture smoothly ribbed to rugose; gaster fusiform to elipsoid; metascutellum conical to rounded; radial cell long to short; marginal vein as long as parastigma to shorter than parastigma; stigmal vein vertical to oblique.   
 Differential diagnosis. The odd mix of 14-segmented antennae in females, shortly overlapping mandibles (both sexes), absence of malar keel (both sexes), and homogeneous pilosity on front tibiae (males) suggests the species has a rather isolated position within the genus.   
 Bionomics. Flight period May to August; males are much rarer than females. Hosts unknown.   
 Distribution. Czech Republic (MACEK 1989), England (NIXON 1957), France (KIEFFER 1909), Switzerland (WALL 1967). New records: Germany, Hungary, Poland, Slovakia.   
 Remark. Given the lack of types, the synonymy of Oxylabis marshalli, A. fuscicornis, and A. levifrons is based only on the original descriptions.
description: Published as part of Macek, Jan, 2007, Revision of Central European species of the Aclista scutellaris complex (Hymenoptera: Diapriidae), pp. 211-228 in Acta Entomologica Musei Nationalis Pragae 47 on pages 224-225, DOI: 10.5281/zenodo.5328323