Aztecatopse foliosa Huerta & Haenni, 2016, sp. nov.

Aztecatopse foliosa sp. nov.

(Figs 1 B, 3B, 4B, 6B, 7B, 9B, 10B, 11B, 13, 16)

Type material. HOLOTYPE: Male (slide mounting). Mexico, Estado de México, Otumba, Locality Coyotepec, 2530 m, 19º 39’ 09.3’’ N; 98º 45’ 25.7’’ W, 12.IV–4.V.2007, Malaise Trap, D. Hernández Zetina leg. (CAIM). Paratypes: 5 males, same data except 24.V–14.VI.2007, 1 male (slide mounting); same data except 5–26.VI-2007, 1 male (slide mounting), 1 male (in alcohol); same data except 15.XII–6.XII.2007, 2 males (1 in alcohol, 1 slide mounted). All paratypes in CAIM, except 2 in MHNN.

Diagnosis. Tergite 7 bearing a pair of posterolateral, elongated projections; sternite 7, broad, extended laterally, bearing a pair of posterolateral, elongated projections; aedeagus leaf-like, with subapical tufts of setae.

Description. Male. Similar to A. amorimi sp. nov. in most characters. Body length approximately 2.03 mm (Fig. 1 B). Brownish species in general colour. Head. (Fig. 1 B). Ommatidia equal in size, in lateral view at level of base of scape, a row of 6 ommatidia disposed from outer to inner ocular margin; scape square, a row of setae disposed along distal margin; pedicel subcylindrical, 8 flagellomeres (Fig. 3 B) covered with microtrichia and sensilla; flagellomeres I–VII twice as wide as long, each bearing a whorl of setae, last flagellomere rounded, as long as 2 preceding ones, bearing 3 whorls of setae; flagellum length, 0.28 mm. Palpi (Fig. 4 B) brown, setose, subcylindrical, apically rounded, with at least 4–5 subapical sensory pits, length 0.09 mm, width 0.045 mm.

Thorax. (Fig. 1 B). A well-marked row of 10–11 supraalar setae; anterior spiracular sclerite setose (13–15 setae), with a well-marked antero-dorsal pointed projection, spiracle large, not longer than high (Fig. 6 B); pleural setae: 9 anepisternal, in upper anterior corner of sclerite, 9–12 anepimeral, 6 subalar, 3–6 katepisternal, 3–4 posterior spiracular, no meral setae.

Wing. (Fig. 7 B) length, 1.32–1.37 mm, width, 0.60–0.62 mm. R4+5 reaching costa beyond middle of wing, and slightly beyond level of fork of M; M fork nearly twice as long as stem, gradually widening towards wing margin; second costal section shorter than first; a false vein present between M2 and CuA1; CuA2 smoothly angled near middle, reaching wing margin obliquely. Wing length/section costal 1: 2.9; WL/C2: 5.3; WL/C3: 1.5; WL/C1+C2: 1.8; C extending 0.52 of wing length.

Abdomen. Tergite 7 wider than long, pilose, bearing a pair of posterolateral, elongated projections (Figs 9 B, 10B); posterior margin V-shaped; length, 0.23 mm, width, 0.32 mm. Sternite 7 wider than long, slightly emarginate anteriorly, expanded laterally forming a cone-shaped lateral angle, a deep complex U-shaped posterior emargination (Figs 9 B, 10B), presence of a small ornamented median zone, close to the posterior margin, with a group of small rough granulations; length, 0.20 mm, width, 0.41 mm. Genital capsule (Figs 11 B, 13) short, epandrium with anterior margin deeply V-shaped, medially heavily sclerotized, without plough-like projection, posterior margin with a pair of small, setose, posterolateral lobes; gonocoxites joined to epandrium, with elongated, slender lateral processes; aedeagus leaf-like, bearing subapical tufts of setae, joined laterally to membranous process; parameres elongated, subcylindrical, with rounded, short subapical extension.

Female. Unknown.

Distribution. Nearctic. Mexico (Estado de Mexico) (Fig. 16).

Bionomics. The six specimens of the type series were collected with a Malaise trap in an arid zone of central Mexico dominated by Agavaceae and Cactaceae during the months of April to June and November–December.

Etymology. The name refers to the leaf-like aedeagus, from Latin folium meaning “leaf”; the specific epithet is a noun in apposition.