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April 12, 2016

Diceroprocta knighti (Davis, 1917)

Filed under: Cryptotympanini | Diceroprocta | Mexico | United States | William T. Davis — Tags: — Dan @ 1:12 pm

Diceroprocta knighti (Davis, 1917)

Song type: Call


Source: ©Insect Singers | Species: D. knighti

Name, Location and Description

W.T. Davis’ description1 from 1917:

Type male from Santa Catalina Mts., Tucson, Arizona, July 23, 1917 (Harry H. Knight). Davis collection.

Head above black with a dark yellowish spot each side between the antenna and the eye and an irregular one each side of the ocelli at the back of the head and extending to back of the eye. Pronotum blackish, shining, with the posterior marginal band olive colored, the band extending along the sides to the anterior angles, the posterior angles of the pronotum, however, are fuscous. Mesonotum shining chocolate-colored, the elevated X olive, and the sides of that color also to the base of the fore wings where there is an orange spot seen only when the insect is expanded. The outer sides of the W-mark are faintly outlined in part with olive. Tergum shining, the tympanal areas rather conspicuous and chocolate-colored. The succeeding segments blacker with the posterior margins faintly chocolate-colored. Last segment with a pruinose spot each side, and more conspicuously chocolate-colored than segments three to seven. Fore wing with the costal margin yellowish to the end of the radial cell, darker beyond; subcostal vein black; first and second cross veins slightly infuscated. The basal cell of each fore wing nearly clear, but blackened along the anterior margin. The flaps of both fore and hind wings are gray in color. Beneath pruinose, black about the eyes, where there are some long, silken, white hairs. The transverse rugse are yellowish and somewhat blackened where they join the shallow frontal sulcus. The legs are chocolate-colored with lighter spots and dashes, the hind pair being lighter colored than the other two pair. The opercula are pruinose, the lower extremities of the inner margins not quite touching, and the ends rounded. The ventral segments are dark chocolate-colored, central ones being lighter posteriorly. The last segment is rounded at the extremity and the valve is black. The external parts of the genitalia chocolate-colored and black.

Male Type

Length of body: 24mm.
Width of head across eyes: 9.5mm
Expanse of fore wings: 70mm.
Greatest width of operculum: 5mm.
Greatest length of operculum: 4.5mm

Classification:

Family: Cicadidae
Subfamily: Cicadinae
Tribe: Cryptotympanini
Subtribe: Cryptotympanina
Genus: Diceroprocta
Species: Diceroprocta knighti (Davis, 1917)

List of sources

  1. Wm. T. Davis. SONORAN CICADAS COLLECTED BY HARRY H. KNIGHT, DR. JOSEPH BEQUAERT AND OTHERS, WITH DESCRIPTIONS OF NEW SPECIES. Journal New York Entomological Society. Vol. xxv. 1917
  2. Full Binomial Names: ITIS.gov
  3. Common names: BugGuide.net; The Songs of Insects by Lang Elliott and Wil Herschberger; personal memory.
  4. Locations: Biogeography of the Cicadas (Hemiptera: Cicadidae) of North America, North of Mexico by Allen F. Sanborn and Polly K. Phillips.
  5. Descriptions, Colors: personal observations from specimens or photos from many sources. Descriptions are not perfect, but may be helpful.

Notes:

  • Some descriptions are based on aged specimens which have lost some or a lot of their color.

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