Pseudolycoriella brevialata, Mohrig & Kauschke, 2019

Mohrig, Werner & Kauschke, Ellen, 2019, New Black Fungus Gnats (Diptera, Sciaridae) of North America. Part V. Genera Pseudolycoriella Menzel & Mohrig and Phytosciara Frey, Zootaxa 4543 (2), pp. 261-283 : 264

Pseudolycoriella brevialata sp. n.

( Fig. 2 A – E ; Plate IV, Fig. VII)

Locus typicus: USA, Texas, Sam Houston National Forest, Willis, 60 km N of Houston.

Holotype: Male, 3.–6.xi.1996, leg. W. Mohrig, yellow pan trap ( PWMP).

Paratypes: 2 males and 1 female, same data as holotype ( PWMP) ; 1 male, 21.–23.vii.1997, USA, Virginia, suburban settlement of Williamsburg, mixed forest, yellow trap, leg. W. Mohrig, ( PWMP) .

Description. Male. Head: Round; eye bridge 2–3 facets wide. Antenna uniformly brownish, 4 th flagellomere with a l/w index of 1.4, hairs shorter than the flagellomere width, flagellomere with a few deepened sensorial pits. Palpi short, 3-segmented, first segment with 1–2 bristles and a flat patch of sensillae. Mouth parts short. Thorax: Brownish; scutum with rather short and dark hairs, some lateral and prescutellar bristles longer. Scutellum with 4 more robust bristles. Postpronotum bare. Wing pale, short and wide; R 1 = 1/2 R; c = 3/4 w; y shorter than x, bare; M-fork as long as M-stem, narrow; CuA-stem shorter than x; posterior veins distinct, without macrotrichia. Haltere short, brown. Legs yellowish; tibial organ of fore tibia with an irregular row of bristles, not bordered. Claws finely toothed. Abdomen: Ventral base of hypopygium without lobe, inner margin of gonocoxites with short sparse hairs. Gonostylus apically rounded, densely haired at the apex, subapically with 2 fine spines not longer than the apical hair and with 1–2 short whiplash hairs. Tegmen as wide as high, apically rounded with a horseshoe-like structure. Aedeagus short with a large furca. Body length: 2.5 mm.

Comments. The species is characterized by a rounded and densely haired apex of the gonostylus with two short subapical spines and 1–2 short whiplash hairs.

Distribution. USA (Texas, Virginia).

Figures

FIGURE 2. Pseudolycoriella brevialata sp. n. Holotype. A. Gonostylus, ventral view. B. Basal part of hypopygium. C. Antennal flagellomeres 3–4. D. Apex of fore tibia. E. Wings.