Dasydorylas colombiensis Ramos-Pastrana & Marques & Rafael 2024, sp. nov.

Dasydorylas colombiensis sp. nov.

urn:lsid:zoobank.org:act: BD492866-DC5C-4892-9C54-7FD75B6CA0F7

Figs 1–13, 53

Diagnosis

Postpedicel with aristiform apex. Tergites 1–5 brown, brown pruinose, with distal margin gray pruinose dorsolaterally, interrupted medially. Surstyli subsymmetrical, slightly shorter than epandrium; both surstyli thickened basally and medially, thin apically, with inner margins slightly straight, outer margin curved, and apices acute inward-directed in dorsal view; left surstylus with apex sinuous, right surstylus with apex truncated in lateral view. Apex of phallic guide with upper margin slightly sinuous and a tuft of small setae centrally in lateral view. Phallus trifid, with ejaculatory ducts distinctly separated only in distal half.

Etymology

The species name refers to Colombia, where holotype has been collected.

Type material

Holotype COLOMBIA – Boyacá • ♂; “ SFF[Santuario de Fauna y Flora] Iguaque, Cab.[Cabaña] Mamaramos; 05°25′ N, 73°27′ W; 2855 m [eters]; 13.Nov [XI]– 04.Dic [XII].2001; P. Reina leg.”; IAvH M1063 (photographed specimen). Holotype with left wing mounted on microslide with Canada balsam. Left antenna and terminalia are in a microvial with glycerine, pinned along with the specimen.

Paratypes COLOMBIA – Boyacá • 2 ♂♂; “ SFF[Santuario de Fauna y Flora] Iguaque, Cab.[Cabaña] Mamaramos; 05°25′ N, 73°26′ W; 23.Sep [IX]– 11.Oct. [X].2000”; IAvH (1 ♂ dissected) • 1 ♂; idem; “ 01–17. Aug [VIII].2000; (IAvH) • 1 ♂; idem; “ 04–21.Dec [X].2001”; IAvH M1080 • 1 ♂; idem; “ 05°25′12″ N, 73°27′24″ W; Malaise4; 01–19.IV.2000 ”; IAvH (dissected).

Description

Male (holotype)

MEASUREMENTS. Body length 3.4 mm, Wing length 4.9 mm.

HEAD (Figs 1–2). Eyes contiguous for 19 facets. F, EM, V (mm) = 0.3, 0.4, 0.1. Frontal triangle dark brown, brown pruinose, with callus shiny dark brown. Occiput dark brown, gray pruinose ventrally and laterally, brown pruinose dorsally. Antenna (Fig. 3) scape and pedicel dark brown, pedicel with three setae dorsally and two ventrally; postpedicel with aristiform apex. LPP/WPP = 5.1.

THORAX (Figs 1–2, 4). Postpronotal lobe brown, brown pruinose, with six long setae along upper margin. Scutum, ground color brown, brown pruinose, with two gray pruinose spots anterolaterally; dorsocentral setae conspicuous. Notopleuron brown, gray-brown pruinose. Scutellum brown, brown pruinose, with 10 long, stout and black setae in the posterior margin. Mesopleuron and mediotergite concolorous with notopleuron.

WING. LW/MWW = 3.1; LTC/LFC = 5.6. Membrane brown infuscated; vein M 1 slightly curved upward. Halter stem and knob completely beige ventrally, brown dorsally, except beige in medial third of stem.

LEGS (Fig. 1). Coxae dark brown, gray-brown pruinose; trochanters brown, gray-brown pruinose; femora brown, gray-brown pruinose, except yellowish brown apices, femora with conspicuous ctenidia and a row of long setae anterolaterally and posterolaterally; tibiae brown, except yellowish brown in basal third; tarsomeres 1–4 brown, 5 dark brown; pulvilli yellowish brown.

ABDOMEN (Figs 1–2, 6). Ground color velvety brown, with conspicuous scattered setae; tergites 1–5 brown, brown pruinose, with distal margin gray pruinose dorsolaterally, interrupted medially; tergite 1 with five black and long setae laterally; tergites and sternites 6 and 7 as in Fig. 7. Syntergosternite 8 dark brown, gray-brown pruinose, shorter than tergite 5, with a membranous area apically (Fig. 6).

TERMINALIA (Figs 7–13). Epandrium and surstyli brown (Fig. 8). Surstyli (Figs 8–10) subsymmetrical, slightly shorter than epandrium, with some differentiated black setae scattered dorsally in dorsal view. Both surstyli thickened basally and medially, thin apically, with inner margins slightly straight, outer margin curved, and apices acute inward-directed in dorsal view; right surstylus slightly shorter than left (Fig. 8); left surstylus with apex sinuous, right surstylus with apex truncated in lateral view (Figs 9–10). Gonopods asymmetrical, right gonopod slightly thicker than left in ventral view (Fig. 11). Apex of phallic guide stout, with apex hook-shaped, upper margin slightly sinuous, with a tuft of small setae dorsocentrally in lateral view (Fig. 12). Ejaculatory apodeme parasol-shaped (Fig. 13). Phallus trifid, thin, with ejaculatory ducts distinctly separated only in distal half (Figs 11–12).

Female

Unknown.

Geographical distribution

Colombia (Boyacá) (Fig. 53).

Habitat

The specimens were collected in the Santuario de Fauna y Flora Iguaque reserve, where the vegetation is composed of cloud Andean forests of the cordillera of the Northeast region of Colombia.

Remarks

Based on males and due to the shape of the surstyli, D. colombiensis sp. nov. (Fig. 8) is similar in appearance to D. gibber sp. nov. (Fig. 21) but differs from the latter in having the tergites 1–5 brown, brown pruinose, with distal margin gray pruinose dorsolaterally, slightly interrupted medially (Figs 1–2, 6) (vs tergite 1 completely brown pruinose; tergites 2–4 with distal margins yellowish brown pruinose; tergite 5 dark brown, brown pruinose dorsally, yellowish brown pruinose laterally in D. gibber sp. nov.; Figs 14–15, 19); left surstylus with apex sinuous in lateral view (Fig. 9) (vs left surstylus with apex slightly rounded in lateral view; Fig. 22); apex of phallic guide with upper margin slightly sinuous and tuft of small setae dorsocentrally (Fig. 12) (vs apex of phallic guide with a translucid lobes lateroapically and a stout rigid lobe dorsally; Fig. 25); phallus with ejaculatory ducts distinctly separated only in distal half (Fig. 12) (vs phallus with ejaculatory ducts distinctly separated only in distal fifth; Fig. 25).