Bibloplectus faulknerensis Owens and Carlton, 2016

Owens, Brittany E. & Carlton, Christopher E., 2016, Collecting in the Museum: New Species, Taxonomic Changes, and Range Extensions of Euplectite Pselaphinae (Coleoptera: Staphylinidae) of the Southeastern United States, The Coleopterists Bulletin 70 (3), pp. 611-633 : 611-633

Bibloplectus faulknerensis Owens and Carlton , new species

( Fig. 4a–d )

Type Material. Holotype, male: USA. AR. Faulkner Co. Game and Fish Field Trail Demo. Area 10–11 May 1991 C. Carlton / LSAM0002151 . ( FMNH).

Etymology. The specific epithet refers to Faulkner County, Arkansas, where the type locality is located.

Diagnosis. The combination of the absence of a flange on the metatibia and the presence of a shortened flange and spine on the mesotibia ( Fig. 4c, d ) distinguishes this species, externally, from all Bibloplectus except B. kylei new species and B. baylessae new species. The form of the aedeagus is distinctive ( Fig. 4a, b ), with the ventral lobe straight and short (only reaching about threefourths of the aedeagal length), a median lobe with a hooked end, a small lateral process curved distally on the right side, and a short ventral strut.

Description. Male. Measurements: HL = 0.06 mm, HW = 0.15 mm; PL = 0.13 mm, PW = 0.20 mm; EL = 0.25 mm, EW = 0.31 mm; A1–6, respectively, = 0.04, 0.08, 0.06, 0.07, 0.09, 0.03 mm; An1–11, respectively, = 0.02, 0.02, 0.01, 0.01, 0.01, 0.01, 0.01, 0.01, 0.02, 0.02, 0.06 mm; MP1–4, respectively, = 0.01, 0.03, 0.01, 0.02 mm; GL = 0.41 mm, GW = 0.25 mm; ML = 2.2 mm. Integument: Head, pronotum, elytra, and abdomen light brown, appendages light brown to yellow. Entire surface covered with semierect pubescence. Pubescence in gular area sparse, longer than on rest of body, a few capitate. Thorax: Procoxae unmodified, protibiae unmodified except for a few, small subapical setae or small spines. Mesocoxae contiguous, unmodified, mesotibiae setate apically, bearing well-developed subapical tubercle and associated spine. Metacoxae unmodified, conjunct, not fully separated by short intercoxal process of ventrite I, metatibiae unmodified apically. Genitalia: Aedeagus asymmetrical. Ventral lobe straight and shortened, only reaching about ¾ of aedeagal length. Median lobe broad with hooked end. Small lateral process curved distally on right side. Ventral strut short.

Female. Unknown.

Distribution. Arkansas: Faulkner County.

Figures

Figs. 2–4. Bibloplectus species. 2) B. baylessae - a) Aedeagus, lateral view, b) Aedeagus, dorsal view, c) Mesotibia, d) Metatibia; 3) B. bossartae - a) Aedeagus, lateral view, b) Aedeagus, dorsal view, c) Mesotibia, d) Metatibia; 4) B. faulknerensis - a) Aedeagus, lateral view, b) Aedeagus, dorsal view, c) Mesotibia, d) Metatibia.