Brucheiser penai RIEK, 1975

Sziráki, Gy., 2007, Studies On Brucheiserinae (Neuroptera: Coniopterygidae), With Description Of The Second Genus Of The Subfamily, Acta Zoologica Academiae Scientiarum Hungaricae 53, pp. 231-254 : 233-238

Brucheiser penai RIEK, 1975

Examined material: Chile, Prov. Elqui, Cuesta de Pajonales, Atacama Desert, 1400 m a.s.l., 30 September 1980: 3 males and 3 females, leg.: L. E. PEÑA G.

Complementary to the description of the species: Length of the body 3.6–4.0 mm in males, 4.2–6.6 mm in females. Fore wing 3.6 mm in males, 4.5–4.8 mm in females. Hind wing 3.4–3.9 mm in males, 4.0–4–5 mm in females. Length of the antennae seems to be similar in both genders: 3.9–4.3 mm. Well-developed midfrontal-coronal suture present. Number of antennal segments 50–54 in males, 55–56 in females. Scape 1.3 times, pedicel about 2 times, median flagellar segments 3.3 times as long as broad. The base of scape about 3 times as broad as pedicel, while pedicel somewhat wider than flagellar segments.

The first two abdominal segments are very short. Spiracles present on the segments 1–8. Plicatures ( Figs 1–2 , 9 ) are in two lateral rows and in a median row on the abdominal segments 3–6 and 2–6 respectively in females, while on 3–7 (lateral) and 2–7 (median) in males. Below the opening of the first median plicature ( Figs 1–2 ) seems to be a glandular structure, which is larger in females than in males.

Male terminalia ( Figs 3–7 ): The eighth segment is sclerotized somewhat more than the previous ones, and has a small ventral knob, covered by rather strong hairs. Ninth sternite rounded, swollen and very short. Ectoproct well sclerotized, with two dorsally converging, ventrally branching apodemes, with strong caudal, and small dorsal projections, and with two pairs of clasper-like, ventrally situated appendages. The anterior ventral appendage slightly forked, while the posterior one is rather blunt. Paramere moderately long, and curved inwards and forwards caudally. Penis consists of a well sclerotized, horseshoe-shaped ventral part and a slightly sclerotized dorsal arch. Ventral part of penis armed ventrally with teeth and hairs.

Female terminalia ( Figs 8–9 ): The eighth and ninth sternites are fused, supported by an apodeme anteriorly, and has a rounded projection caudally. Ectoproct has rounded caudal and a small dorsal projections, and bordered anteriorly by a strong apodeme. Large part of the caudal projection of ectoproct strongly sclerotized. Gonapophysis lateralis weakly sclerotized, and elongated in dorso-ventral direction. There is a folded glandular structure laterally at the anterior apodeme of the ectoproct.

Female internal genitalia ( Fig. 10 ): Bursa copulatrix rather large, and moderately sclerotized. Its dorsal and lateral surface covered by slashed projections, perhaps with glandular function. Receptaculum seminis weakly sclerotized, bladder like, with an unidentified darker structure inside. Duct of receptaculum semininis short. Ductus seminalis long. Its proximal end connected to the duct of receptaculum seminis, otherwise, its rather wide proximal part is attached to the bursa copulatrix between its vento-lateral lobes. Distal part of ductus seminalis extremely long, thin and looped many times. Median oviduct wide, and relatively well sclerotized. A separate postbursal accessory gland absent.

Remarks: The most remarkable distinctive feature of Brucheiser penai may be found in the male terminalia, in which the ninth sternite is short and widely rounded, while it is elongate and – in caudal view – consists of a wider anterior and a narrower posterior part in B. argentinus ( RIEK 1975: figs 15–16).

Figures

Figs 1–2. First median plicature of Brucheiser penai: 1 = female, 2 = male. Scale: 0.04 mm

Figs 8–9. Female of Brucheiser penai, female terminalia:8 = lateral view, 9 = ventral view. Scale:0.3 mm. VI = 6th sternite, VII = 7th sternite, VIII+IX = the fused 8th and 9th sternites, X = 10th sternite, cpe =caudal projection of ectoproct (callus cerci), dpe = dorsal projection of ectoproct, e = ectoproct, fgs = folded glandular structure, gl = gonapophysis lateralis, lpl = lateral plicature, mpl = median plicature

Figs 3–4. Male of Brucheiser penai: 3 = male terminalia, lateral view, 4 = male terminalia, ventral view. Scale: 0.15 mm; IX = 9th sternite, aae = anterior appendage of ectoproct, cpe = caudal projection of ectoproct (callus cerci), dpe = dorsal projection of ectoproct, e = ectoproct, p = penis, pa = paramere, pae = posterior appendage of ectoproct

Figs 5–7. Male of Brucheiser penai: 5 = male terminalia, caudal view, 6 = paramere and penis, lateral view, 7 = paramere and penis, ventral view.Scale: 0.15 mm; IX = 9th sternite, aae = anterior appendage of ectoproct, cpe = caudal projection of ectoproct (callus cerci), dpe = dorsal projection of ectoproct, e = ectoproct, p = penis, pa = paramere, pae = posterior appendage of ectoproct

Fig. 10. Brucheiser penai, female internal genitalia, lateral view.Scale:0.15 mm; bc = bursa copulatrix, ds = ductus seminalis, mo = median oviduct, rs = receptaculum seminis