Agenioideus rubicundus

Agenioideus (Ridestus) rubicundus new species
Holotype. — S , Mexico: Morelos: 3 mi. N Alpuyeca, 3400 feet, 18 April 1959 (HEE) [MCZ, no. 30, 963].
Description. — Length 7 mm.; fore wing 6.5 mm. Color ferruginous except propleura, posterior lateral margins of pronotum, and posterior part of mesosternum black, inner and outer orbits with a small yellowish streak; first two antennal segments ferruginous, rest of antenna dark brown; legs ferruginous except middle and hind tarsi strongly infuscated. Wings faintly tinged with brownish, apical margin of fore wing and tip of hind wing slightly darker. Entire body covered with fine silvery pubescence; erect hairs virtually absent except for some whitish ones on temples and propleura. Clypeus 1.6 X as wide as high, its apical margin weakly rounded, subtruncate. Front rather narrow, MID .56 X TFD; UID and LID subequal; POL very slightly exceeding OOL. First four antennal segments in a ratio of about 23:12:25:23, segment three 3.3 X as long as wide. Pronotum short, subarcuate behind; postnotum at midline nearly as long as metanotum, transversely striate; propodeum with the slope low and even, without a median impression. Middle and hind tibiae
with sparse, rather strong black spines; longer spur of hind tibia .66 X length of hind basitarsus. Fore wing with basal and transverse median veins interstitial, SMC3 narrowed by slightly more than half above. SGP similar to that of biedermani, rounded apically, rather flat except for a strong median elevation toward the base. Genitalia with the parameres slender, with a membranous strip along the inner margin and with a small, acute squama about halfway to the apex; digiti slightly wider than in biedermani, the inner apex subangulate, the surface sparsely setose; aedoeagus simple, shorter than the parapenial lobes (fig. 37).
Distribution. — Central Mexico. (Map 27.)
Paratypes. — Morelos: 1 $ , 12 mi. E Cuernavaca, 14 Aug. 1962, 4000 feet (RHP) [USNM]. Nayarit: 1 $ , Ahuacatlan, 1822 July 1951 (HEE) [MCZ].
Variation. — In the paratypes the fore wing varies from 6 to 8 mm. long. The Morelos specimen is colored much like the type, but the flagellum and tarsi are nearly black, the mesosternum is wholly black, and the ocellar triangle is black. Body measurements are very similar to those of the type; in both the paratypes POL:OOL is about as 5:4. The Nayarit specimen has a slightly wider front than the other two, MID measuring .59 X TFD. This specimen is colored somewhat differently, the inner and outer orbits having a stronger yellowish streak and the posterior margin of the pronotum a yellowish stripe; also, the following are suffused with blackish: central part of upper front, extending through ocelli to occiput; extreme anterior part of mesoscutum; sides of scutellum and all of metanotum and postnotum; a broad band down center of propodeum; propleura, mesosternum, and anterior parts of mesoand metapleura; trochanters, tibial spurs, and tarsi also strongly infuscated.