Aclista dubia ( Kieffer, 1909 )

Macek, Jan, 2005, Revision of the Central European species of Aclista (Diapriidae, Hymenoptera). Part II. Aclista insolita Nixon, 1957 Aclista dubia Kieffer, 1909 and similar species, Acta Entomologica Musei Nationalis Pragae 45, pp. 183-197 : 85-86

Aclista dubia ( Kieffer, 1909)

( Figs. 3, 10 , 17, 24, 31, 38)

Anectata (Acoretus) dubia Kieffer, 1909: 543 , ♀.

Xenotoma (Acoretus) dubia: KIEFFER (1910) : 32.

Xenotoma (Zelotypa) dubia: KIEFFER (1916) : 543, 546.

Aclista dubia: NIXON (1957) : 77, 81; KOZLOV (1978): 566, 569.

Acoretus dubius: HELLÉN (1964) : 20, 24.

Type locality. France, Andréoz.

Type material. HOLOTYPE: ♀, ‘Andréoz, France, de Gaulle lgt., J. Kieffer det.’ ( MNHN).

Additional material examined. CZECH REPUBLIC: BOHEMIA centr., Mořinka (6051), 29.vi.1985, 12 spec. ; Třebotov (6051), 3.vii.1985, 35 spec. ; BOHEMIA mer., Stráž nad Nežárkou

(6955), 10.vii.1985, 8 spec.; BOHEMIA or., Městec Králové (5757), 13.vii.1988, 6 spec. MORAVIA mer., Vranov nad Dyjí (7060), 12.viii.1997, 4 spec. SLOVAKIA centr.: Kremnické vrchy Mts., Veľký Son hill (7280), 6.viii.1985, 1 spec. ; Nízké Tatry Mts. , Kyslá valley (7186), 9.viii.1984, 1 spec. POLAND centr.: Warszawa, NR J. Sobieckiego, 26.viii.1980, J. Ekipa lgt., 2 spec. ; POLAND bor.: Sliwice , 22.ix.1987, 1 spec. ; all J. Macek lgt & det. unless stated otherwise.

Diagnosis. Head transverse; toruli with deep cleft between; malar space with short keel extending from posterior basal corner of mandible about halfway towards eye; antenna gradually becoming darker in distal half; scape bowed, twice as long as flagellomere 1; basal flagellomeres cylindrical, distal ones moniliform; mandibles sickle-shaped, prominent; toruli finely rugose below; subantennal sutures indistinct, very short; lateral keel of pronotum sharply developed; notauli continuous, diverging posteriorly; inner plicae of propodeum converging and sharply pointed posteriorly; radial cell narrow, relatively short, one and half time as long as marginal vein; petiole with irregular longitudinal rugosity; gaster fusiform, with dense semidecumbent pubescence at sides of its distal half; base of macrotergite with medial furrow and dense striation.

Variability. The examined material shows no apparent variation.

Differential diagnosis. The species differs easily from all other Aclista by the combination of the following two characters: malar keel extending from the base of mandibles as far as the middle of malar area and a deep cleft between antennal toruli.

Bionomy. Hosts unknown; flight period from June to September.

Distribution. England ( NIXON 1957), France ( KIEFFER 1916), Germany ( NIXON 1957), Sweden ( NIXON 1957), Finland (HELLÉN 1964), European Russia ( KOZLOV 1978) and Czech Republic ( MACEK 1989). New for Poland and Slovakia

Figures

Figs. 1-7. Head, frontal view (female). 1 – Aclista insolita Nixon, 1957; 2 – A. vernalis sp. nov.; 3 – A. dubia Kieffer, 1909; 4 – A. longistilus Kieffer, 1909; 5 – A. marginalis Kieffer, 1909; 6 – A. elegantula sp. nov.; 7 – A. subtilis sp. nov. Scale = 1 mm.