Neoidiotypa mexicana sp. nov.

(Figs. 56–71, 109)

Comments and diagnosis. Similar to N. flaviatra and N. sticta, N. mexicana has the postpronotal lobe yellow, the scutum black with two parallel yellow stripes, and the abdomen with yellow basal bands on tergites 3–5.

Contrasting with all species of Neoidiotypa, however, N. mexicana has the wing with one spurious vein on vein R2+3 directed into cell r1, the thorax with golden setae (except postpronotal and postsutural supra-alar setae), the coxae yellow, and the abdomen entirely covered with yellow setulae.

Description. Holotype male: Measurements (in mm): body length 9.9; head 1.4; abdomen 5.6; wing 8.0. Head (Figs. 58–60): Yellow, except two circular pale brown spots around insertion of orbital seta (Fig. 59), and very faint, brownish spot on gena, below eye (Fig. 60). Setae black, setulae on frons and on dorsal half of postcranium black, and on gena and on ventral half of postcranium yellowish. Head width-height ratio 1.29 (Fig. 58). Frons-head ratio 0.41 (Fig. 58). Frons width-height ratio 1.16 (Fig. 58). Ocelli-distance ratio 1.5 (Fig. 109). Ocellar triangle black, and slightly extended posterior to posterior ocelli (Fig. 59). Scape on dorsal surface and pedicel pale brown. Scape on ventral and lateral surfaces yellow, as long as pedicel (Fig. 60). First flagellomere pale brown, 3.0 times longer than wide (Fig. 60). Arista yellow at base, and dark brown at apex, with very sparse, weak and short pubescence. Ocellar seta absent. Postocellar seta present. Genal seta present and golden. Postgenal seta absent. Palpus yellow; obovate, with apex rounded and distinctly wider than base (Fig. 53). Prementum yellow (Fig. 60). Thorax (Figs. 56, 61): Scutum 1.2 times longer than wide; black with two straight parallel stripes and golden yellow band on transverse suture; densely covered with black setulae, except on stripes and bands parts bare. Postpronotal lobe and scutellum yellowish. Noto-, meso- and metapleuron yellowish, except: posterior half of anepimeron, median third of meron and antergite brown. Subscutellum and mediotergite brown. Setae on thorax golden, except postpronotal and postsutural supra-alar black. Postpronotal seta very weak, slightly more robust than setulae around it. Postsutural supra-alar, postalar, intra-alar and postsutural dorsocentral setae similar in length and thickness, except postalar seta slightly thicker. Presutural supra-alar and katepisternal setae absent. Proepimeral seta very weak. Halter with yellow stem and white knob. Legs: Robust, fore femur slightly more swollen than mid and hind femora; fore tarsomeres distinctly more robust than mid and hind tarsomeres. Spine-like setae black. Yellow, except anterior apical portion of fore femur, fore tibia, fore tarsomeres, apical anteroventral and ventral spot on mid femur, hind trochanter and basal half on posterior surface of hind femur brown. Pulvilli white. Fore femur with small spine-like antero- and posteroventral setae on apical two-fifths; spine-like setae similar in number and thickness. Mid coxa with one long yellow medial seta. Mid femur with spine-like antero- and posteroventral setae on apical three-fourths; spine-like posteroventral seta without modifications and closer to each other near the apex; ventral surface without hollow. Hind femur with spine-like antero- and posteroventral setae on apical half; one preapical dorsal seta. Wing: Shorter than body length (Fig. 56); brown on anterior half and pale brown on posterior half (Fig. 56); one spurious vein on vein R2+3 directed into cell r1 (Fig. 62). Abdomen (Figs. 56, 57, 63): Brown, except syntergite 1+2 on median third and tergites 3–5 on basal fourth yellow; covered with yellow setulae (Fig. 63), except some black setulae on lateral margin of tergites 3–5. Syntergite 1+2 1.7 times longer than tergite 3; basal two-thirds distinctly narrower than apical third (Fig. 63); with five preapical and apical yellow setae, arranged randomly on laterodorsal and dorsal surfaces. Tergites 3–5 similar in length. Tergites 3–4 as wide as apex of syntergite 1+2. Tergite 5 gradually narrower than apex of tergite 4 (Fig. 63). Tergites 3–4 with row of apical yellow setae on laterodorsal and dorsal surfaces. Sternites 2‒5 yellow; covered with yellow setulae, except some apical setulae on sternites 4–5. Male terminalia (Figs. 65–71): Epandrium wider than high; densely covered with setae and setulae (Figs. 66, 69). Cerci developed (Figs. 66, 69, 70) and slightly sclerotized; densely ciliated, especially at base; basal, median and preapical regions, with setae slightly shorter than apical setae; one apical seta distinctly longer (Fig. 66). Lateral surstylus with medial rounded projection; slightly ciliated (Figs. 66, 69, 70). Medial surstylus with set of preapical and apical setae, close to prensiseta (Fig. 71); anterior preapical region rounded and convex (Fig. 71). Prensiseta developed, elongate and slightly curved, with apex slightly acuminate (Fig. 71). Distiphallus slightly ciliated on basal half (Figs. 65, 67) and densely ciliated on apical half (Figs. 65, 67, 68); apex membranous with one weakly sclerotized plate.

Type material. Holotype male, USNM: “ MEXICO: Veracruz:\ Apazapan, 19º19’N \ 96º43’W, 17 Dec [December] 2003, M Aluja [collector]” “ USNM ENT 00039810”. The holotype is in excellent condition with all parts preserved, except the apical part of the abdomen was detached beyond tergite 4 and placed in a micro-vial with glycerin, and pinned together with the specimen.

Distribution. Mexico.

Etymology. The specific epithet refers to the country of the type locality, Mexico.