Pompilus perfasciatus Evans 1951

South. Calif. and Ariz. in deserts; Mexico (Zacatecas).

Pompilus (Perissopompilus) perfasciatus Evans
Pompilus (Perissopompilus) perfasciatus Evans, 1951, Trans. Amer. Ent. Soc, 77: 225-226 [Type: 2, California: Whitewater, Riverside Co., 9 July 1950 (JWM) (CAS)]. — Evans. 1958, Ent. News, 69: 147-148, 151 (description of male). Female. — Length 4.5-7.0 mm. Black; fore wings clear hyaline to moderately infuscated on the basal three-fourths, with a strong darker band on the apical fourth; hind wings hyaline or lightly infuscated, darker apically. Body clothed extensively with a coarse silvery pubescence, absent from the vertex, parts of the thoracic dorsum, and the metapleura; abdomen more or less banded with silvery pubescence. Clypeus 3.4-3.9 X as broad as high, truncate below. Front rather broad, MID .56-.61 X TFD; UID .85-.90 X LID; POL:OOL about as 5:3. Third antennal segment equal to from .45 to .58 X UID. Front basitarsus short and with the comb-spines nearly or quite half the length of the basitarsus. Fore wing with only two SMCs.
Male. — Length 3.5-4.5 mm. Black; wings hyaline, with a brownish band on the apical fourth of the fore wing; body clothed with a coarse silvery pubescence, especially prominent on the temples, posterior margin of pronotum, mesopleura, and hind coxae; pubescence on abdominal tergites directed backward except in broad apical bands, where it tends to diverge from the median line. Head broad; eyes diverging above; POL:OOL about as 8:5. Third antennal segment no longer than the second, not or barely longer than thick. Wings as in female. S6 with a pair of weak carinae, by no means as strong as in phoenix. Terminalia as figured by Evans, 1958, figs. 1 and 2, differing from those of phoenix as expressed in the key.
Distribution. — Deserts of southern California and Arizona, with a single record from Zacatecas, Mexico. (Map 67.)
Specimens examined. — 10 9 2,3 $ $ . California: 1 9, Whitewater, Riverside Co. [type, CAS]; 1 2 , Indio, Riverside Co., Apr. (PDH) [CIS]; 1 9 , Hopkins Well, Riverside Co., Apr. (E. G. Linsley) [CIS]; 1 2, 18 mi. W Blythe, Riverside Co., 2 Apr. 1963 (RMB) [UCD]; 3 9 2,2 $ $, Borrego Valley dunes, San Diego Co., Apr. (RMB) [UCD, MCZ]. Arizona: 1 i , 15 mi. NE Yuma, Apr. (RHP) [MCZ]; 1 2 , 8.3 mi. E Yuma, Mch. (JWM) [CIS]; 1 9 , 21 mi. N Yuma, 4 Apr. 1963 (FDP) [UCD]. Mexico: Zacatecas: 1 9 , 9 mi. N Ojo Caliente, 12 May 1962 (FDP) [UCD].
Variation. — The Zacatecas specimen has the wings moderately infuscated instead of hyaline as in the U. S. specimens, the apical fuscous band thus contrasting less strongly to the base; also the abdomen is mostly dark-pubescent except for strong apical silvery bands on Tl-4.