Anoplius chiapanus Evans 1966

Anoplius (Arachnophroctonus) chiapanus new species
Allotype. — 5, Mexico: Chiapas: El Zapotal, 2 mi. S Tuxtla Gutierrez, 9 July 1957 (PDH) [CAS].
Description of allotype female. — Length 10.5 mm.; fore wing 10 mm. Black; pubescence wholly dark, reflecting various shades of blue and bluegreen, except posterior coxae silvery behind; fore wings moderately infuscated, with a darker band along the outer margin, hind wings lightly infuscated, subhyaline basally and posteriorly. Head with fairly abundant short setae; thoracic dorsum sparsely setose; propodeum with numerous short, fine hairs on the sides; front coxae setose but remaining coxae barely so; abdominal venter and apical tergites strongly setose, the apical tergite with an unusually large number of bristle-like setae. Head 1.15 X as wide as high, vertex passing straight across a very short distance above the eye tops. Clypeus 2.6 X as wide as high, its apical margin weakly concave. Front narrow, MID .53 X TFD; UID .86 X LID. Front angle of ocellar triangle about a right angle,
POL and OOL equal. Antennae moderately elongate, first four segments in a ratio of about 15:4:20:15, segment three equal to .9 X UID. Pronotum short, broadly angulate behind. Propodeum short, with a rather abrupt, nearly flat declivity on the posterior .4. Front basitarsus with three comb-spines, the spines only very slightly longer than the width of the tarsus at their bases. Anal vein of hind wing meeting median vein slightly beyond origin of cubitus. Fore wing with marginal cell removed from wing tip by about its own length; SMC3 slightly wider below than second but more strongly narrowed above, actually narrowed by about two-thirds above.
Holotype. — $, Mexico: Chiapas: 12 mi. E Comitan, 3 Aug. Description of type male. — Length 10 mm.; fore wing 8.5 mm. Black, upper outer orbits very narrowly pale, posterior margin of pronotum with a whitish stripe which is interrupted medially; fore wings lightly infuscated, with a dark marginal band; hind wings subhyaline, infuscated apically. Pubescence of much of thoracic dorsum and parts of abdomen dark, with bluish reflections, elsewhere strongly silvery, especially on the front, coxae, lower pleura, posterior part of propodeum, broad basal bands on basal three tergites, and all of remaining tergites, the pubescence being especially dense and pale on the apical tergite. Front with abundant dark setae; propodeum with many rather long, pale setae; abdominal sternites smooth except for a few inconspicuous setae on S5. Clypeus 2.2 X as wide as high, truncate below. Front broad, MID .63 X TFD; MID 1.2 X LID; UID subequal to LID. Ocelli in a right triangle; POL:OOL = 5:6. First four antennal segments in a ratio of about 10:3:9:10, segment three twice as long as thick. Posterior margin of pronotum broadly angulate. Propodeum with a short, steep declivity behind. Last segment of front tarsus rather weakly lobed on inner margin; inner front tarsal claws strongly bent, the inner ray lobe-like, all other claws with the inner ray truncate and only slightly shorter than the outer ray. Longer spur of hind tibia nearly as long as basitarsus. Venation similar to that of female, except SMC3 not quite as wide as second, narrowed by about two-thirds above. Venter with only scattered short, inconspicuous setae. SGP broad, rounded apically, somewhat tectiform and hirsute medially. Genitalia with the parameres curved but slightly, broadest about one-third their length from the apex; digiti spindle-shaped, densely clothed with moderately long setae which are angled at their apices; base of digitus with a group of long setae (fig. 52).
Distribution. — Western Mexico to Costa Rica. (Map 48.)
Paratypes. — Mexico: Jalisco: 2 2 2, Guadalajara, 5000 feet,
14 July 1959 (HEE) [MCZ, CU]. Nayarit: 1 2 , 35 mi. S Tepic,
27 July 1954 (MC, WG) [AMNH]. Sinaloa: 1 2, Mazatlan, 19
July 1959 (HEE) [MCZ]; 2 $ $ , 8 mi. S Elota, 2 July 1963 (FDP & LS) [UCD, MCZ]. El Salvador: 1 2,5 S $ , Quezaltepeque, June, July 1963 (Cavagnaro & Irwin; Scullen & Bolinger) [UCD, OSU, MCZ]; 1 5 , 2.5 mi. N Quezaltepeque, 6 July 1961 (M. Irwin) [UCD]. Honduras: 1 $ , 7 mi. E Goascoran Valle, 200 feet, 25 July 1958 (Neff & Matthews) [MCZ]. Costa Rica: 1 3, 8 mi. NW Liberia, 28 July 1963 (HAS) [OSU].
Variation. — The females vary in size from 9 to 13.5 mm., fore wing from 8 to 12.5 mm. In the larger females the vertex tends to form a weak arc a short distance above the eye tops. MID varies from .53 to .58 X TFD, antennal segment three from .73 to .90 X UID. Curiously, the claws are quite distinctly bifid in the type and in the female from Quezaltepeque, although in all other females (including the one from 2.5 mi. north of Quezaltepeque) they are dentate as usual in this subgenus.
The males vary in size from 7 to 10 mm., fore wing from 6 to 9.5 mm. The genitalia show but little variation, although the abundance and length of the erect setae on the SGP does show considerable variation, some specimens approaching moeslus in this regard. In the male paratypes SMC3 is narrowed by .5-. 7 above.