Sonoma cardiac, 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 : 8-9

2. Sonoma cardiac new species

Fig. 2 , 38 ; Map 3.

Description. Holotype, male. Measurements: head 0.31 long, 0.38 wide; pronotum 0.37 long, 0.45 wide; elytra 0.57 long, 0.35 wide; antennomeres 1–11 total 0.80; total length 2.30. Body brown, maxillary palps paler. Body with moderate length (approximately 1/2 or less width of eye) setae.

Head. Eyes prominent, maximum length in dorsal view 0.93x length of first antennal segment, with approximately 26 facets. Antennomere 2 approximately 0.80x width of 1; 3 smallest.

Thorax. Pronotum with lateral discal foveae. Elytra with indistinct sutural foveae; 2–3 foveae lateral to sutural fovea; central row of 5–6 foveae in basal 1/3. Apparently brachypterous. Metatibia unmodified.

Abdomen. Tergite IV without transverse patch of microtrichia. Basal lateral foveae obscured, weak if present. Basal pubescence present on ventrites IV–VI, lacking on VII.

Aedeagus. Compact. Left paramere: wide at base, abruptly narrowing in apical 1/3; apical process with dorsal lobe extending medially but not meeting medial dorsal edge, resulting in a distinct furrow; 5 setae along inner margin of apical process extended medially; one seta on outer margin of apical process extending posteriorly. Endophallus: large blunt lateral projection at basal 1/3, projected to the left; thick lateral process at midpoint projected to the right; apex blunt, subequal in width to apical 1/2 of endophallus. Right paramere: oval, lacking processes and setae [possibly damaged].

Type Material. Holotype, male: * USA: OR:Josep.Co, 5 mi S Obrien 1700’, XII-18-71 EMBenedict, doug-fir&cedar litter (1♂). Deposited in FMNH.

Geographical Distribution. Sonoma cardiac is known from a single specimen collected from Josephine Co., Oregon.

Comments. The specimen was collected during December from Douglas fir and cedar litter.

Aedeagal characters of Sonoma cardiac are similar to those of S. virgo . The left parameres of each are indistinguishable, but unique among known species of Sonoma . The two can be separated based on the following characters, S. virgo in brackets []: endophallus with large blunt lateral projection (1/4 length of endophallus) in basal 1/3 [small process approximately 1/10 length]; apex of endophallus blunt, no projections [apex of endophallus with two projections, one narrow and one wide]; right paramere without apical projections or setae [right paramere with ventral process with two apical projections, tuft of lateral apical setae present].

Etymology. The specific epithet is based on the resemblance of the aedeagus to a heart.

Figures

Figures 1–6. Sonoma spp. holotype habiti. 1) S. agitator. 2) S. cardiac. 3) S. carltoni. 4) S. cataloochee. 5) S. caterinoi. 6) S. chandleri.

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.