Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 81. (Budapest 1989)
Asís, J. D., Gayubo, S. F. ; Tormos, J.: Preimaginal stages of Iberian Sphecidae V. Sphex rufocinctus Brullé and Ammophila laevicollis Ed. André (Hymenoptera, Sphecidae)
240 J. D. ASIS ET AL. directly from nests excavated at the aforementioned locality. The larva otAmmophila laevicollis was obtained by breeding in the laboratory an egg of this species collected after oviposition. After removal from the nest, together with the prey accompanying it, it was placed on a sand-filled Petri dish in which a cell, similar to that observed in the field, had been constructed. The larva was fed with geometrid caterpillars killed by freezing, and the specimen was prepared for study just before it began cocoon spinning. The larvae were treated according to the method of EVANS & LIN (1956) by mounting the specimens in Entellan. The terminology employed here also follows that proposed by EVANS & LIN (op.cit.). In the descriptions, we refer to some of the relationships extant between the observed structures; this relationships can only be used for orientation and should not be used for species differentiation - unless a previous study has already been conducted on them - since such structures often show an allometric behaviour. The following abbreviations have been used: d=diameter, h=height, l=length and w=width. RESULTS Sphex (Sphex) rufocinctus BRULLÉ, 1883 Generaldescription - Fusiform body (Fig. 1) (1=19 mm, w=5,5 mm). Pleural lobes very prominent, obliterating the intersegmental lines. Segments divided dot-sally in two annulets. Along the whole body length there is a well-visible mediodorsal longitudinal line. Anus transversal. Thoracic spiracles (d =115-135 ,um, x=125<um) slightly smaller than the abdominal ones (d= 120-145pm, x=135jum). Atrium walls (Fig. 2) with rings of spinules. Integument covered with tiny papillae and spinules (l = 5^tm), denser in some areas: a transversal band on the centre of each segment and on the pleural lobes. A few tiny setae (1=15 fim) at center of dorsal part of each segment (about 30 per segment). The aspect of the integument may vary slightly, regarding the presence of papillae and spinules, from one specimen to another, although both formations are always present. Head (Fig. 3) - Slightly wider than high(w-l,61 mm, h« 1,44 mm) . Parietal bands peresent (1=0,59 mm). Integument with punctures distributed over almost the whole surface; from some of them emerge small setae (1=5-10 / um). Antennái orbits (d=65,um) slightly ellipsoidal or rounded, with three antennái papillae (d=5/im). Clypeus (w=0,96 mm, h=0,41 mm )exhibiting numerous punctures; apical margin slightly emarginated. emarginated. Labrum (Fig. 4a) (w=0,68 mm, h =0,38 mm) with numerous punctures on the apical third; anterior edge fairly emarginated. Epipharynx spinulous (Fig. 4b), particularly on its apical third, with spinules (1=5-15,Jim) directed downwards on the external side and upwards at center on central part. Sensory areas situated on a zone lacking in spinules, with 6 sensitive papillae on each side (d=5-10 / um). Some isolated papillae are also present on basal zone. Integument light in colour, with the following parts in brown: antennái orbits and contiguous integument, parietal bands, two areas between the bands, close to the antennái orbits, four ones on the clypeus, and the surface contiguous to the mandibular articulation. The apical half of the mandibles, the labroclypeal suture, two areas on the upper part of the labrum and one at the centre of the lower margin, as well as the maxillary and labial palpi, the galeae and part of the maxillae are also light-brown in colour. Mouthparts - Mandibles (Fig. 3) (1=0,66 mm,w=0,38 mm) with four teeth, appearing 6-7 punctures on the external part of the upper face. Maxillae (Fig. 5) spinulous on the lacinial area, with spinules of 5-15 ^um in length; the basal part also shows spinules, although these are much smaller. External face, close to the maxillary palpi, with tiny setae (l=5-15 ) um). Galeae (1=100^im, w=60,um) considerably larger than the maxillary palpi (1=70^m, w=60 Labium (Fig. 6) (w=0,37 mm) with papillous oral face, a few setae appearing on the lower face (1=5-15 ^m). Lips of spinnerets about 0,37 mm in width. Labial palpi (1=60 ^um, w=70jum) very broad, with four well-visible papillae on apex. Ammophila laevicollis ED. ANDRÉ, 1886 General description - Fusiform body (Fig. 7), very thin on anterior part (1=13,2 mm, w= 3,6 mm). Pleural lobes well-developed; dorsal rings well-visible. Thoracic spiracles situated slightly below the line of
