Sonoma maryae, Ferro, 2016

Ferro, Michael L., 2016, Fourteen new species of Sonoma Casey (Coleoptera: Staphylinidae: Pselaphinae) with a key to species from western North America, Insecta Mundi 2016 (472), pp. 1-57 : 13-14

9. Sonoma maryae new species

Fig. 9 , 37 ; Map 23.

Description. Holotype, male. Measurements: head 0.28 long, 0.39 wide; pronotum 0.37 long, 0.43 wide; elytra 0.72 long, 0.39 wide; antennomeres 1–11 total 0.87; total length 1.96. Body brown; antennae, maxillary palpi, and legs paler. Body with short setae (1/4 or less width of eye).

Head. Eyes large, maximum length in dorsal view 1.66x length of first antennal segment, with approximately 70 facets. Antennomere 2 approximately 0.78x width of 1; 3 smallest.

Thorax. Pronotum with lateral discal foveae. Elytra with indistinct sutural foveae; 1 fovea lateral to sutural fovea; central row of 3 foveae in basal 1/3. Winged. Metatibia unmodified.

Abdomen. Tergite IV with transverse patch of microtrichia narrowly interrupted at midline. Basal lateral foveae on ventrites obscured, weak if present. Basal pubescence present on all visible ventrites.

Aedeagus. Left paramere: elongate oval; ventral shelf running along 9/10 mesal margin; subapical digitate process with 5 projections directed mesad; apical tuft of 7–10 setae subequal in length to paramere; 5 additional setae along inner margin in apical 1/3, directed mesad. Endophallus: more or less same width throughout; curved; base projecting behind right paramere, abruptly curving to the left until achieving midline of aedeagus, straightening and projecting posteriorly until apical 1/5 curves right. Right paramere: oval with ventral shelf running from apex to inner margin near base; single subapical digitate ventral process with multiple convoluted projections; apical tuft of 12–15 setae subequal in length to paramere.

Type Material. Holotype, male: * Oregon:Bent. [Benton] Co., Mary’s Peak ,1800’ II-1-1976 / LRussell sift cedar litter (1♂). Deposited in FMNH.

Geographical Distribution. Sonoma maryae is known from a single specimen collected from Marys Peak, Benton Co., California.

Comments. Sonoma maryae was collected in February by sifting cedar litter.

Aedeagal characters of Sonoma maryae are similar to those of S. cavifrons and S. parviceps . The three can be separated based on the following characters, S. cavifrons in brackets [], S. parviceps in braces {}: left paramere with small basal lobe on inner margin that does not project across midline of phalobase [basal lobe larger, projecting slightly beyond midline of phalobase], {basal lobe pronounced, symmetrical with midline of phalobase}; left paramere with digitate process with 5 projections directed mesad [digitate process with three projections], {digitate process with two distinct projections}; endophallus with three distinct curves—at base, below the midline, and subapically [with major curve at base, otherwise projected posteriorly, slight curve at apex], {with major curve at base, apex with distinct “apical hook”, inner structures distinct}; right paramere with single subapical digitate ventral process with multiple convoluted projections [subapical digitate ventral projection with single tip], {ventral projection in two parts, distal part consisting of three short processes, basal part elongate projection shaped like a crooked finger}.

Etymology. Sonoma maryae is named for Mary Elizabeth (Mary E.) Ferro Chapa, the author’s sister and a longtime supporter of his research endeavors, who shares the name of the locality.

Figures

Figures 7–11. Sonoma spp. holotype habiti. 7) S. cobra. 8) S. colberti. 9) S. maryae. 10) S. quellazaire. 11) S. rossellinae.

Figures 37–39. Aedeagi of Sonoma spp. 37) S. maryae new species. 38) S. cardiac new species. 39) S. virgo new species. Right side of figures is anatomical left.