Boreofairchildia belti Ježek, Oboňa & Le Pont

Ježek, Jan, Oboňa, Jozef, Pont, François Le, Maes, Jean-Michel & Mollinedo, Sergio, 2018, Two new species of Bruchomyiinae (Diptera, Psychodidae) from the Neotropical Region, Zootaxa 4442 (3), pp. 469-478: 470-474

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Boreofairchildia belti Ježek, Oboňa & Le Pont

sp. nov.

Boreofairchildia belti Ježek, Oboňa & Le Pont  sp. nov.

( Figs. 1–20View FIGURES 1–9View FIGURES 10–14View FIGURES 15–20)

Description. Head ( Fig. 1View FIGURES 1–9) with prominent vertex, ridge-shaped. Eyes separated by 3 facet diameters anteriorly ( Fig. 2View FIGURES 1–9); frons with cluster of approximately 22 hair scars at anterior angle of eye, cluster separated from other scars on frons and vertex. Insertions of four supraocular bristles on dorsal margins of eyes enlarged. The fold of eye is marked on Fig. 1View FIGURES 1–9 from caudal view (black colour). Antenna (incomplete in holotype and paratype) with flagellomeres elongate ( Fig. 3View FIGURES 1–9), cylindrical, covered with abundant digitiform soft sensilla over their entire lengths, with paired mushroom- or platter-shaped ascoids ( Fig. 4View FIGURES 1–9). Scape and pedicel subsphaerical (scape irregularly). Ratio of lengths of segments of palpus maxillaris 1.2:1.0:1.2:3.3, two basal segments almost fused, maxilla (lacinia) not longer than two basal segments together ( Fig. 10View FIGURES 10–14). Newstead’s scales of third palpal segment not evident. Mouthparts extending over mid length of palpus segment 3. Labial lobes (labella) ( Fig. 11View FIGURES 10–14) prolonged with a little swollen sides, parallel inner lines of small microsetae are visible. Cibarium ( Figs. 1, 5View FIGURES 1–9) longer than broad, well sclerotized, without chitinous arch or armature.

Thorax. Anepisternum with elliptical, narrowed (strangled or strangulated) medially (in the middle) setose patch ( Fig. 12View FIGURES 10–14), thoracic spiracle is kidney-shaped. Wing length 3.5 (holotype) - 3.8 mm (paratype), inconspicuously clouded, almost 4 times longer than wide ( Fig. 7View FIGURES 1–9). Sc ending free in wing area at almost one third of wing length. R1 long, radial fork placed before ending of R1, arising conspicuously distal to medial fork; medial fork arising distal to r-m by distance equal to twice the length of r-m. R2+3 3.2 and 2.3 times longer than R2 and R3, respectively. M3 and CuA1 run across basally and arcuated before ending of CuA2, both with connections to M1+2 and CuA1. A1 ending free in the wing basis. Following veins strengthened: Sc, R1, R5 and CuA1. Veins are quite clearly attached to the costa, but mostly slightly less heavily sclerotized near their apex. Halteres ( Fig. 6View FIGURES 1–9) almost ovoid with a prolonged stem, bare. Ratio of maximum length of halteres to their maximum width approximately 4.0:1. Ratios of lengths of femora, tibiae and first tarsal segments: P1 1.1:2.0:1.0, P2 1.2:2.3:1.0, P3 1.3:2.6:1.1. Paired tarsal claws of P1 haired basally as in Fig. 8View FIGURES 1–9, widened in the middle and bent distad. Areas of insertion points of elongate erectile setae of paired verrucae of medial abdominal segments (tergal chaetotaxy) and microsetae see on Fig. 15View FIGURES 15–20.

Terminalia. Hypandrium narrow (observed in paratype Cat. No. 34712), approximately as wide as distiphallus in lateral view, fused to gonocoxites, more sclerotized antero-medially. Epandrium ( Figs. 16, 17View FIGURES 15–20) quadrangular in dorsal view, about twice as long as wide, more than 3: 1 in lateral view. Ventral plate ( Fig. 16View FIGURES 15–20) reduced to proximal and distal stripe margins, connected by narrower ligaments laterally on both sides of epandrium. Hypoproct largely triangular, tongue-shaped, epiproct oval with longitudinal sclerotized medial rib, both parts setose ( Figs. 16, 17View FIGURES 15–20). Cerci cylindrical from dorsal view, bluntly pointed distally, broadly round in lateral view ( Figs. 16, 17View FIGURES 15–20). Gonocoxite almost cylindrical ( Figs. 13View FIGURES 10–14, 18View FIGURES 15–20), with numerous conspicuous setae alveoli dorsally and laterally, with several elongate setiform sensilla inserted medially. Gonostyle ( Figs. 13, 14View FIGURES 10–14, 18View FIGURES 15–20) approximately a little shorter than gonocoxite, irregularly bulbose basally, with two quite different strong protuberances: undulated tapering arm with one tip and straight ramified arm with four pointed digits of different length. Parameres as figured ( Fig. 9View FIGURES 1–9), flat, sclerotized. Ejaculatory apodeme (dissected, not figured) as long as epandrium, straight, stick-shaped, very narrow (see paratype Cat. No. 34712). Aedeagal complex on Figs. 19 and 20View FIGURES 15–20: Basiphallus with two characteristic prolonged sclerotized patches, connected with paired ovoid sclerites proximally. Bilobed U-shaped distiphallus is fixed in a cleft of two leaves originated hardly in the middle of phallus, rounded caudally in lateral view and pointed in dorsal view. Spines on both parts conspicuous.

Differential diagnosis. Similar to Boreofairchildia sziladyi ( Tonnoir, 1940)  . However, B. sziladyi  is characterized by Sc distally connected to C and R1; median protuberance of gonostylus U-shaped, short-toothed, with shallow cleft and much-more longer sinuous projection dorsally; parameres with two pointed apices dorsally, both parts declinated. Boreofairchildia belti Ježek, Oboňa & Le Pont  sp. nov. has ending of Sc free ( Fig. 7View FIGURES 1–9), not connected to C and R1; median protuberance of gonostylus straight, ramified, with four pointed digits of different length and, moreover, undulated tapering arm dorsally ( Figs. 13, 14View FIGURES 10–14, 18View FIGURES 15–20); parameres with one apice dorsally ( Fig. 9View FIGURES 1–9). Boreofairchildia belti  is similar as well to B. mopani  (de León, 1950) in aedeagal complex, where gonostylus has only three apical long and slender protuberances, with bases contiguous, extended posteriorly; parameres of heavily sclerotized structures, blade-like, straight or slightly sinuous, not recurved, simple. Third palp segment evidently with a dense patch of Newstead´s scales at about middle in contrast to B. belti  where this character is not evident.

Type locality. Central Nicaragua, rain forerst on the Caribbean slope of the Cerro Musun , east of Matagalpa department. 

Type material. Holotype: male ( NMPCAbout NMPC, dissected, slide, red label), Nicaragua: Cerro Musun , v.-vi.2009  , CDCAbout CDC miniature light-trap, Le Pont leg., Cat   . No. 34711, Inv. No. 24165. Paratype: male ( NMPCAbout NMPC, dissected, yellow label), same data, Cat. No. 34712, Inv. No. 24166. 

Etymology. This species is named in honour of Thomas Belt, an English geologist and author of a highly regarded work „The naturalist in Nicaragua “ (1874).

Distribution. Currently known from one locality in Central Nicaragua.


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Changdu Institute for Drug Control