Anoplius dreisbachi Evans 1966

Ariz. and south. Calif. to Colo., Wyo. and B. C., chiefly in Transit. Zone.

Anoplius (Anoplius) dreisbachi new species
Anoplius tarsatus Dreisbach, 1950, Amer. Midi. Nat., 43: 585, 586, figs. 17, 21
(misidentification; not tarsatus Banks). Anoplius {Anoplius) ventralis tarsatus Evans, 1951, Trans. Amer. Ent. Soc,
76: 355-357 (in part, including Fig. 115).
This species is not known to enter Mexico, but may well occur in the northern part. It is described here as part of the clarification of this complex, as it has previously been confused with the preceding species. The females can be told from those of toluca by the less coarse and less intensely bluish pubescence and by the generally narrower front. I am at present unable to present any characters for separating the females of dreisbachi and papago. The ranges of these two species are not presently known to overlap, but it is possible that they do so to some extent. The males can be distinguished readily from those of both papago and toluca by the nature of the brushes of hair on the venter, as expressed in the key. In the male genitalia, the parameres are short, much as in papago, while the digiti are very similar to those of toluca.
Allotype. — 9, Washington: Bothell, King Co., 22-26 Aug. 1954 (H. E. and M. A. Evans) [MCZ].
Description of female allotype. — Length 11 mm.; fore wing 9.8 mm. Black: pubescence very fine, moderately strongly reflecting bluish except somewhat brownish on the clypeus, coxae, and most of the legs; wings moderately infuscated, darker apically, violaceous. Head, prothorax, mesopleura, and propodeum with abundant dark hair; mesonotum with scattered setae; middle and hind coxae sparsely short-setose; abdomen setose ventrally, the last tergite densely bristly. Clypeus 2.5 X as wide as high, its apical margin weakly concave. Head 1.16 X as wide as high, the vertex passing straight across between the eye tops. Front rather narrow, MID .54 X TFD, 1.15 X LID, .82 X eye height; UID .91 X LID. POL:OOL = 5:6. First four antennal segments in a ratio of about 28:7:42:34, segment three equal to .92 X UID. Pronotum angulate behind. Propodeum with a nearly flat declivity on the posterior third. Front basitarsus with one spine in the upper row nearly as long as the width of the tarsus, one of the spines in the lower row longer than the width of the tarsus. Longer spur of hind tibia .63 X as long as the hind basitarsus; spines in the median row on the hind basitarsus numbering 9. Marginal cell of fore wing removed from wing tip by about its own length; SMC3 narrowed above by nearly .8.
Holotype. — S , same data as allotype [MCZ, no. 30, 973].
Description of male type. — Length 10 mm.; fore wing 9 mm. Black; pubescence colored as in female except conspicuously silvery on sides of lower front; wings moderately infuscated, darker along outer margin, somewhat violaceous. Head, prothorax, mesopleura, and propodeum with abundant dark setae; mesonotum with a few setae; S3 with a number of fairly long, slanting setae, but these do not form a brush comparable to that on the next two sternites; brush on S4 covering most of the sternite, leaving a narrow apical margin bare, so that this brush is very narrowly separated from that on S5, both brushes continuous across the sternites but with the hairs shorter medially. Clypeus 2.1 X as wide as high. Head slightly wider than high; vertex forming a weak arc above the eye tops. MID .58 X TFD; UID 1.07 X LID; OOL slightly exceeding POL. First four antennal segments in a ratio of about 4:1: 4:4, segment three about 2.5 X as long as thick. Last segment of front tarsus strongly lobed on the inner margin, this segment widest about mid-way of its length. Longer spur of hind tibia .75 X as long as hind basitarsus. Fore wing as in female. Venter with strong hair-brushes as described above. SGP broadened toward the base, the side-pieces weakly pigmented, about as figured for papago. Genitalia with the parameres shorter than the digiti, the portion beyond the squama only about 2.5 X the width at the squama; digiti spindleshaped, the apex acuminate, disc covered with fairly long, mostly straight setae; base of digitus with one or two fairly strong setae (fig. 49; see also fig. 21 in Dreisbach, 1950, and fig. 115 in Evans, 1951).
Distribution. — Arizona and southern California to Colorado, Wyoming, and British Columbia, chiefly in the Transition Zone.
Paratypes. — Arizona: 1 8 , Vail Lake, Aug. [CU]; 1 8 , Flagstaff, Sept. [CIS]; 2 8 8, Mormon Lake, Coconino Co., Aug. [MCZ]; 1 ?, Lake Mary, Coconino Co., Aug. [MCZ]. Colorado: 1 8, Mesa Verde, Aug. [AMNH]; 1 8, Boulder, July [MCZ]; 1 8, Troublesome, 7345 feet, 8 June 1908 (S. A. Rohwer) [USNM]. Utah: 2 5 9,3 8 8 , Randolf, Rich Co., July [UCD]; 288, Garden City, Rich Co., July [UCD]. Nevada: 1 8 , Reno, Sept. [CIS]; 1 8 , Verdi, Washoe Co., June [UCD]; 1 9 , 14 mi. SE Wellington, Douglas Co., Aug. [UCD]. Wyoming: 1 8 , Norris area, Yellowstone, Aug. [CIS]. British Columbia: 1 2,688, Squamish, Aug. [CNC]; 1 9, Keremeos, July [CNC]; 1 9, Atbara, Sept. [CU]. Washington: 2 9 9,1 8, Bothell, King Co., Aug. [MCZ, CU]; 2 8 8 , Lopez Island, Aug, [CU]; 2 8 8, Port Townsend, July [CIS]. Oregon: 1 8 , Mt. Hood, 7000 feet, Aug. [UCD]; 1 9,1 8 , Corvallis, July, Sept. [MCZ]; 1 9 , 14 mi. E of The Dalles, July [OSU];
1 8 , Detroit, 11 July 1907 (J. C. Bridwell) [USNM]. California:
2 8 8, Angora Peak, 8600 feet, July [CIS]; 1 8 , Tamarack Lake, 7700 feet, July [CIS]; 1 5,1 $ , Hallelujah Jet., Lasssn Co., July, Sept. [CIS, UCD]; 1 9 , Sierraville, Sierra Co., July [CIS]; 1 9,1 8 , Yuba Pass, Sierra Co., July [UCD]; 3 8 8 , Boca, Nevada Co., June, July [CIS, UCD]; 1 9 , China Flat, Eldorado Co., June [CIS]; 2 9 9, 2 8 8 , Echo Lake, Eldorado Co., July [CIS, MCZ]; 3 9 9,3 8 8, Leland Meadows, Tuolumne Co., Aug. [CIS, CAS, UCD]; 2 8 8, Pinecrest, Tuolumne Co., Aug. [CIS]; 1 9,2 8 8, Sonora Pass, Tuolumne Co., Aug. [CIS, UCD]; 1 8 , Strawberry, Tuolumne Co., July [CIS]; 1 9, Petaluma, Sonoma Co., Sept. [UCD]; 1 8, McClure's Beach, Marin Co., July [CIS]; 1 $ , Inverness, Marin Co., July [UCD]; 1 9 , Arroyo Mocho, Alameda Co., July [CIS]; 2 8 8, San Francisco, Aug. Sept. (J. C. Bridwell) [USNM]; 1 8 , Lobos Creek, San Francisco, May [CIS]; 6 8 8, Ingleside, Aug. [CU, MCZ]; 1 8 , Carmichael, Sacramento Co., May [UCD]; 1 8 , Pickel Mdw., Mono Co., Aug. [UCD]; 1 8 , Mineral King, Tulare Co., Aug. [MCZ]; 1 8 , 7 mi. SE Pine Flat, Tulare Co., July [CIS]; 1 9 , Yosemite Nat. Pk., July [CIS]; 1 8 , Big Sandy Flat, Madera Co., July [CIS]; 1 8 , Glacier Lodge, Inyo Co., July [CIS]; 1 8 , Big Pine, Inyo Co., June [CIS]; 1 8 , San Simeon Bch., San Luis Obispo Co., Aug. [CIS]; 1 8, 2.5 mi. S Arroyo Grande, San Luis Obispo Co., June [CIS]; 2 9 9,9 88, Goleta, Santa Barbara Co., June [CIS, UCD, USNM, MCZ]; 1 8 , Jenks Lake, San Bernardino Co., Aug. [CIS]; 1 8 , Big Bear Lake, San Bernardino Co., Aug. [MCZ]; 1 8 , San Bernardino Mts., July [CIS]; 1 9 , San Diego, Aug. [MCZ].
Variation. — The females vary in length from 9 to 14 mm.; MID varies from .52 to .56 X TFD, antennal segment three from .75 to .95 X UID; the longer spur of the hind tibia varies from .52 to .70 X the length of the hind basitarsus, the number of spines in the median row beneath the hind basitarsus from 7 to 12 (mean 9.5). The males vary in length from 6.5 to 11 mm. In all available males the front is at least slightly silvery. The number of strong setae on S3 varies considerably; in some specimens there are only a few, in others a fairly strong brush, but in no case nearly as strong as that on S4. Some slight variation can be noted in the length of the parameres, but in no case are they nearly as long as in toluca.