Sonoma chandleri, 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 : 11-12

6. Sonoma chandleri new species Fig. 6 , 32 ; Map 9.

Description. Holotype, male. Measurements: head 0.19 long, 0.27 wide; pronotum 0.27 long, 0.31 wide; elytra 0.40 long, 0.22 wide; antennomeres 1–11 total 0.53; total length 1.98. Body brown; antennae, maxillary palpi, legs, and elytra paler. Body with short setae (1/2 or less width of eye).

Head. Eyes small, maximum length in dorsal view 0.86x length of first antennal segment, with approximately 18 facets. Antennomere 2 approximately 0.73x width of 1; 3 smallest.

Thorax. Elytra with indistinct sutural foveae; single fovea lateral to sutural fovea; central row of 3 foveae in basal 1/3. Wings present but reduced. Metatibia unmodified.

Abdomen. Tergite IV without microtrichia. Basal lateral foveae on ventrites IV–VI. Basal pubescence present on all visible ventrites.

Aedeagus. Left paramere: subtriangular; apex with 10+ elongate setae 2/3 length of paramere; ventral medial ridge with row of approximately 8 elongate setae 2/3 length of paramere. Endophallus: distinctly spatulata; longer than parameres; apical process directed to the right, perpendicular to aedeagus. Right paramere: with thin elongate apical process; distal 1/4 of inner and outer margin bearing elongate setae.

Type Material. Holotype, male: * USA: Calif., Glenn Co., 6mi NE Alder Springs, 20-XI-1979. / FMHD #79-3021 , sift pine & oak litter, D. S. Chandler (1♂). Deposited in FMNH.

Paratypes (n=2). UNITED STATES: CALIFORNIA: Glenn Co.: *Calif.:Glenn Co., 5 mi NE Alder Springs,XI-20-79 DSChandler / sift black & live oak litter ( DCPC) (2♂) 1 SLIDE.

Geographical Distribution. Sonoma chandleri is known from specimens collected at two locations in Glenn Co., California.

Comments. Sonoma chandleri was collected in November by sifting black and live oak and pine litter.

Aedeagal characters of Sonoma chandleri are similar to those of S. vanna . The two can be separated based on the following characters, S. vanna in brackets []: left paramere subtriangular [left paramere with large apical hook directed mesad]; endophallus symmetrical until apical process [endophallus asymmetrical beyond midpoint]; right paramere with apical process simple [apical process with 5–6 projections].

Etymology. Sonoma chandleri is named for Donald Stewart Chandler, collector of the type series and an important contributor to the study of world-wide Pselaphinae .

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 28–32. Aedeagi of Sonoma spp. 28) S. isabellae (LeConte). 29) S. rossellinae new species. 30) S. tehamae Chandler. Modified from Chandler (2003). 31) S. vanna Marsh and Schuster. 32) S. chandleri new species. Right side of figures is anatomical left.