Armillipora nawak, Jaume-Schinkel, 2024

Jaume-Schinkel, Santiago, 2024, Further contributions to the taxonomy of Armillipora Quate (Diptera, Psychodidae) with the description of two additional new species, Evolutionary Systematics 8 (1), pp. 145-154 : 145-154

Armillipora nawak sp. nov.

Figs 1 , 4 , 5

Differential diagnosis.

Armillipora nawak sp. nov. belongs to the suapiensis group (gonostyli not fused). It can be easily differentiated from all the species in the group by the digitiform gonostyli with rounded apex (apex of gonostyli bifurcated in A. bifida sp. nov., and apex of gonostyli pointed and sickle-shaped in A. suapiensis ); the gonostyli are as long as the aedeagus (shorter than the aedeagus in A. bifida sp. nov., and A. suapiensis ); the apex of the aedeagus with two digitiform sclerotized structures (apex of the aedeagus pointed without sclerotized structures in A. bifida sp. nov., and in A. suapiensis ).

Etymology.

The species epithet nawak derives from the Cabécar word: “ ña ̱ ́ wák ”, commonly used to refer to synanthropic psychodines. To be treated as a name in apposition.

Examined material.

Costa Rica – San Jose Moravia • 1 ♂; Zurqui de Moravia; - 10.0492 ° N, - 84.0037 ° W; alt. 1600 masl; 22 Oct. – 01 Nov. 2012; ZABDI project leg.; Malaise Trap ZABDI- 186 ; LACM [ INB 0004346462 - INBIOCRI] . Paratype. Costa Rica – Punteras • 1 ♂; Coto Brus, Las Tablas, Estacion Biologica Las Alturas ; - 8.9519 ° N, - 82.8322 ° W; 1500 masl; 01 Jan. – 07 Jan. 2013; ZABDI project leg.; Malaise Trap ZABDI- 544 ; LACM [ INB 0004415321 ] .

Description.

(N = 2). Wing length: 3.02, width: 1.09. Head length: 0.50, width: 0.60. Antennal segments: scape: 0.12); pedicel: 0.07; flagellomeres 1–4 0.17, flagellomeres 5–14 missing in examined material. Palpal segment 1: 0.10, palpal segments 2–4 missing in examined material.

Male. Head (Fig. 4 A ). About 1.20 times wider than its length; eye bridge separated by about half facet’s diameter, with four rows of facets; interocular suture absent; the frontal patch of alveoli is divided. Antennal scape almost cylindrical, about 1.66 times the length of the spherical pedicel; flagellomeres fusiform and longer than the scape, with scattered alveoli in the surface; each flagellomere with two rows of alveoli; flagellomeres after the fourth absent in examined material; ascoids undistinguishable in examined material. First palpal segment cylindrical; labium without any strong sclerites; labella elongated and teardrop-shaped, with 5–6 scattered setae on the surface and with one apical spiniform tooth on each.

Thorax (Fig. 4 B ). It does not present allurement organs, with a single patch of alveoli in the paraterguite and antepronotum; all coxae with a stripe of one to two rows of alveoli. Wing (Fig. 4 C ) length about three times its width; wing membrane hyaline, with darkened spots in the apex of longitudinal veins (as seen in Fig. 4 C ); Sc vein short ending at the origin of R 1; radial fork basal to medial fork; R 2 + 3 not joining R 4; R 5 ending at the wing apex; CuA ending at wing margin.

Terminalia (Figs 4 D – E , 5 ). Hypandrium on ventral view band-like, sclerotized and joining the base of the reduced gonocoxites; gonostyli not fused with gonocoxites and clearly divergent, digitiform with a rounded apex (as in Fig. 4 D – E , 5 ), each gonostylus with two apical and one subapical alveoli; aedeagus on ventral view straight, basal 2 / 3 rds looking like a single shaft, while apical third as two distinct heavily sclerotized digitiform structures, the aedeagus ends beyond the apex of the gonostyli; ejaculatory apodeme slightly shorter than the aedeagus, broader on the base, and tapering towards its apex, in ventral view the basal margin is rounded, and the width of the basal margin is the same as the length of the ejaculatory apodeme; parameral sclerites seem absent; gonocoxal apodemes (Figs 4 D , 5 ) fitting in a concavity on the underside of the ejaculatory apodeme, and joining the reduced gonocoxites; epandrium rectangular (Fig. 5 ), about 3 times wider than its length; hypoproct tongue-shaped and covered in setulae, epiproct not observed; epandrial appendages (Figs 4 D – E , 5 ) barely hemispherical, prolonged and tapering distally, covered with setae; epandrial appendages with one preapical, tip-folded and short tenacula (Fig. 5 ) with a basal darkened patch of accessory tenacula, the accessory tenacula varies in length, from shorter to longer than the epandrial appendages (Figs 4 D , 5 ).

Female. Unknown.

Distribution.

The species is only known from the type locality in Costa Rica (Fig. 1 ).

Figures

Figure 1. Distribution map of the species of Armillipora Quate.

Figure 4. Armillipora nawak sp. nov. A – E ♂, holotype (INB 0004346462). A. Head; B. Thorax; C. Wing; D. Genitalia, ventral view; E. Aedeagus, ventral view. Abbreviations: acc ten = accessory tenacula; aed = aedeagus; eja = ejaculatory apodeme; ep ap = epandrial appendage; gn apo = gonocoxal apodeme; gns = gonostylus; ten = tenacula with folded tip. Scale bars: 0.25 mm (A); 0.10 mm (B); 0.50 mm (C); 0.10 mm (D – E).

Figure 5. Armillipora nawak sp. nov. ♂, holotype (INB 0004346462). Genitalia, ventral view. Abbreviations: acc ten = accessory tenacula; aed = aedeagus; eja = ejaculatory apodeme; ep ap = epandrial appendage; gn con = gonocoxal condyle; gns = gonostyli; hyp = hypandrium; ten = tenacula with folded tip. Scale bar: 0.10 mm.