Dasydorylas gibber Ramos-Pastrana & Marques & Rafael 2024, sp. nov.
Creators: name: Ramos-Pastrana, Yardany
name: Marques, Dayse Willkenia A.
name: Rafael, José Albertino
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Pipunculidae
Dasydorylas
Dasydorylas gibber

description: Dasydorylas gibber sp. nov.
urn:lsid:zoobank.org:act: 6813D205-09E6-432E-A976-0446F6DB3CC3
Figs 14–26, 53
Diagnosis
Postpedicel with aristiform apex. Tergites 2–4 with distal margins yellowish brown pruinose; tergite 5 dark brown, brown pruinose dorsally, yellowish brown pruinose laterally. Surstyli subsymmetrical, equal to epandrium length; both surstyli thickened basally and medially, thin apically, with inner margins slightly straight, outer margins curved in dorsal view; right surstylus with apex truncated and left surstylus with apex slightly rounded when seen in lateral view. Apex of phallic guide with stout and rigid lobe dorsally and translucid lobes lateroapically in lateral view. Phallus trifid, with ejaculatory ducts distinctly separated only in distal fifth in lateral view.
Etymology
From the Latin ʻ gibber ʼ (= ʻhumpʼ), in reference to the shape of the lobe on the dorsal margin of the phallic guide in the male genitalia.
Type material
Holotype COLOMBIA – Boyacá • ♂; “ SFF[Santuario de Fauna y Flora] Iguaque, Cab.[Cabaña] Mamaramos; 05°25′ N, 73°27′ W; 2855 m [eters]; 23.May [V]– 08.Jun [VI].2000; P. Reina leg.”; IAvH (photographed specimen). Holotype with left wing mounted on microslide with Canada balsam. Left antenna and terminalia placed in a microvial with glycerine, both pinned along with the specimen.
Description
Male (holotype)
MEASUREMENTS. Body length 4.8 mm, Wing length 5.8 mm.
HEAD (Figs 14–15). Eyes contiguous for 19 facets. F, EM, V (mm) = 0.4, 0.4, 0.2. Frontal triangle dark brown, brown pruinose, with callus shiny dark brown. Occiput brown, brown pruinose.Antenna (Fig. 16) scape brown, with one seta dorsally; pedicel dark brown, with four setae dorsally and two ventrally; postpedicel with aristiform apex. LPP/WPP = 5.6.
THORAX (Figs 15, 17). Postpronotal lobe dark brown, brown pruinose, with four long setae along upper margin. Scutum, ground color brown, brown pruinose, with one spot black anteriorly and dorsocentral setae conspicuous. Notopleuron brown, gray-brown pruinose. Scutellum concolorous with scutum, with six long, stout and black setae in the posterior margin. Mesopleuron and mediotergite concolorous with notopleuron.
WING (Fig. 18). Length 5.8 mm. LW/MWW = 3.2; LTC/LFC = 0.8. Membrane brown infuscated, vein M 1 slightly curved upward. Halter stem and knob completely beige ventrally, brown dorsally, except beige medial third of stem.
LEGS (Figs 14–15). Coxae dark brown, gray-brown pruinose; fore trochanter brown; mid and hind trochanters brown, except brownish yellow distal third; femora dark brown, gray-brown pruinose, except brownish yellow apices, femora with conspicuous ctenidia and a row of long setae anterolaterally and posterolaterally; tibiae dark brown, with bases and apices brownish yellow; tarsomeres 1–5 yellowish brown; pulvilli brownish yellow.
ABDOMEN (Figs 14–15, 19). Ground color velvety dark brown, with conspicuous scattered setae; tergite 1 completely brown pruinose, with four black and long setae laterally; tergites 2–4 with distal margins yellowish brown pruinose; tergite 5 dark brown, brown pruinose dorsally, yellowish brown pruinose laterally; tergites and sternites 6 and 7 as in Fig. 20. Syntergosternite 8 brown, gray-brown pruinose, slightly shorter than tergite 5, with a membranous area apically (Fig. 19).
TERMINALIA (Figs 20–26). Epandrium and surstyli yellowish brown (Fig. 21). Surstyli (Figs 21–23) subsymmetrical, equal to epandrium length in dorsal view. Both surstyli thickened basally and medially, thin apically, with inner margins slightly straight, and outer margins curved in dorsal view; right surstylus thicker than left, with apex truncated; left surstylus with apex rounded (Fig. 21); right surstylus with apex truncated; left surstylus with apex slightly rounded in lateral view (Figs 22–23). Gonopods asymmetrical, right gonopod thicker than left in ventral view (Fig. 24). Apex of phallic guide stout, with apex hook-shaped, with stout and rigid lobe dorsally and translucid lobes lateroapically in lateral view (Fig. 25). Ejaculatory apodeme parasol-shaped (Fig. 26). Phallus trifid, thin, with ejaculatory ducts distinctly separated only in distal fifth (Fig. 25).
Female
Unknown.
Geographical distribution
Colombia (Boyacá) (Fig. 53).
Habitat
The specimen was 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 surstyli, D. gibber sp. nov. (Fig. 21) is similar in appearance to D. colombiensis sp. nov. (Fig. 8). It differs from D. colombiensis sp. nov. by having the tergite 1 completely brown pruinose, with four black and long setae laterally; tergites 2–4 with distal margins yellowish brown pruinose, tergite 5 dark brown, brown pruinose dorsally, yellowish brown pruinose laterally (Figs 14–15, 19) (vs tergite 1–5 brown, brown pruinose, with distal margin gray pruinose dorsolaterally, interrupted medially, in D. colombiensis sp. nov.; Figs 1–2, 6); left surstylus with apex slightly rounded when seen in lateral view (Fig. 22) (vs left surstylus with apex sinuous when seen in lateral view; Fig. 9); apex of phallic guide with a translucid lobe lateroapically and a stout rigid lobe dorsally in lateral view (Fig. 25) (vs apex of phallic guide with upper margin slightly sinuous and a tuft of small setae centrally; Fig. 12); phallus with ejaculatory ducts distinctly separated only in distal fifth (Fig. 25) (vs phallus with ejaculatory ducts distinctly separated only in distal half; Fig. 12).
description: Published as part of Ramos-Pastrana, Yardany, Marques, Dayse Willkenia A. & Rafael, José Albertino, 2024, Dasydorylas Skevington, 2001 (Pipunculidae, Tomosvaryellini) of Colombia, with description of three new species and a key to Neotropical males, pp. 138-157 in European Journal of Taxonomy 932 on pages 144-146, DOI: 10.5852/ejt.2024.932.2517, http://zenodo.org/record/11119687