Sphaeropthalma difficilis Baker
Creators: name: Pitts, James P.
name: Wilson, Joseph S.
name: Williams, Kevin A.
name: Boehme, Nicole F.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mutillidae
Sphaeropthalma
Sphaeropthalma difficilis

description: Sphaeropthalma difficilis (Baker)
Photopsis difficilis Baker, 1905. Invertebrata Pacifica 1: 114. Male. Holotype data: Claremont, California (CUIC). Sphaeropthalma (Micromutilla) maricopella purismella Schuster, 1958. Ent. Amer. 37: 17. Male. Holotype data: Lost. Sphaeropthalma (Micromutilla) maricopella maricopella Schuster, 1958. Ent. Amer. 37: 17. Male. Holotype data: Lost. Sphaeropthalma (Micromutilla) maricopella castanea Schuster, 1958. Ent. Amer. 37: 17. Male. Holotype data: Lost. Sphaeropthalma (Micromutilla) californiense californiense Schuster, 1958. Ent. Amer. 37: 18. Male. Holotype data:
Lost.
Sphaeropthalma (Micromutilla) californiense fuscatella Schuster, 1958. Ent. Amer. 37: 18. Male. Holotype data: Lost. Sphaeropthalma (Micromutilla) quijotoa quijotoa Schuster, 1958. Ent. Amer. 37: 18. Male. Holotype data: Lost. Sphaeropthalma (Micromutilla) quijotoa parrasia Schuster, 1958. Ent. Amer. 37: 18. Male. Holotype data: Lost.
Diagnosis of male. This species is recognized by the deeply excised mandible (Fig. 21) with the tooth forming an acute angle and having a vertical apex, the lack of mesosternal processes, the marginal cell shorter (approximately 0.75X) than the stigma, the first segment of the metasoma petiolate with the second segment and densely punctate, the second sternite with an anteromedial tumid region, and the genitalia with a long cylindrical cuspis that is setose ventrally with the apex having longer denser setae and parameres with dense setae located medially, but internally directed, along the internal margin (see Fig. 3 in Pitts et al. 2009).
Diagnosis of female. Pitts et al. (2009) associated the female.
Material examined. California, Riverside Co., Deep Canyon: 1 male, 3. May.1963, 2 males, 16. May.1963, 1 male, 18. May.1969, 1 male, 24. May.1969, 15 males, 23–24. May.2007, 1 male, 30.May.1964, coll. M. Irwin, 2 males, 1–4. Jun.1970, 3 males, 5–13. Jun.1973, 1 male, 13–18. Jun.1969, 1 male, 18. Jun.1969, 1 male, 13–20. Jun.1973, 1 male, 20. Jun.1963, 1 male, 29.Jun–6. Jul.1973, 3 males, 24–26. Jul.1969, 1 male, 28.Jul–17. Aug.1973, 1 male, 5–7. Aug.1969, 1 male, 11. Sep.1969, 1 male, 26.Sep–6. Oct.1969, 1 male, 6– 8. Oct.1969, 1 male, 29.Oct–2.Nov.1969.
Distribution. Found throughout most of the southwestern USA.
Remarks. The males of this species are difficult to separate from S. django Pitts and Wilson and it is currently impossible to separate the females of S. difficilis and S. django based on morphology alone. Sphaeropthalma django is known only from the Algodones Sand Dunes and should not cause any problems with identification of Deep Canyon specimens.
description: Published as part of Pitts, James P., Wilson, Joseph S., Williams, Kevin A. & Boehme, Nicole F., 2010, Nocturnal velvet ant males (Hymenoptera: Mutillidae) of Deep Canyon, California including four new species and a fifth new species from Owens Lake Valley, California, pp. 1-34 in Zootaxa 2553 on page 21, DOI: 10.5281/zenodo.196847