(Proceedings submission caseby-case

372 PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES
Series 4, Volume 63, No. 12
ly convex, smooth and glabrous, median longitudinal impression only superficially impressed;
basal foveae distinct but small and round; median basal area smooth and markedly transverse,
delimited anteriorly by a faint transverse impression; basal margin convex and rounded. Lateral
border of pronotum rudimentary, extremely slender, distinctly defined only in anterior one-third to
one-half, effaced in posterior one-half to two –thirds. Single midlateral setae on each side inserted
at anterior one-third; single basolateral seta on each side, inserted on basal angle at base of digitform
process.
Elytra. Short, ovoid, very slightly tear-shaped, narrower anteriorly than posteriorly, humeri
effaced. Disc markedly convex and smooth. All discal striae effaced, except for a faintly impressed
parascutellar striole and a short and shallow recurrent stria. Basal setiferous pore present. Three
discal setae present, aligned along presumed track of stria 3. Preapicale seta absent, two or three
apicoangular setules present. Umbilicate setal series with setae of humeral group equidistance from
each other, with the first slightly more medially inserted than the others, setae of median group
inserted distinctly posterior to middle.
Legs. Slightly short but slender. Protibiae with longitudinal furrow, glabrous or sparely pubescent
apically on anterior surface. Male protarsomeres 1 and 2 dilated and apicomedially toothed.
Abdomen. Abdominal ventrites glabrous, except for a single paramedial seta on each side, and
ventrite VII of males apically with one pair of paramedial setae, of females with two pairs.
Male aedeagus. Median lobe (Fig. 13b) with shaft with shaft thin and straight, abruptly bent
basally, apex short and rectangular, endophallus with a single long, apically acuminate internal
sclerite.
HABITAT DISTRIBUTION.— Members of this species have been found in a variety of microhabitats
in the alpine zone on the southwest slope of Kawakarpu Shan, at elevations ranging 3745 to
3950 m. Specimens were collected from under stones in moist meadows, on tundra slopes and
ridges with sparse to thick herbaceous vegetation, at the edges of small streams and seeps from
talus slopes They were also collected in pitfall traps placed at the edges of Rhododendron thickets
up to two meters tall. Members of this species have been found syntopic with specimens of Queinnectrechus
(Gaoligongtrechus) balli sp. nov., Queinnectrechus (s.str.) griswoldi and Trechus gongshanensis
sp. nov.
GEOGRAPHICAL DISTRIBUTION WITHIN THE GAOLIGONG SHAN.— Fig. 13c. we examined a
total of 11 specimens (4 males and 7 females), all from the southwest slope of Kawakarpu Shan in
the northern part of the Gaoligong Shan, in Bingzhongluo Township, Gongshan County (see Type
material above for exact collection data). These localities are all in Core Area 2.
OVERALL GEOGRAPHICAL DISTRIBUTION.— This species currently is known only from the
northern part of the Gaoligong Shan, in western Yunnan Province, China.
Subgenus Gaoligongtrechus Deuve and Kavanaugh, subgen. nov.
TYPE SPECIES.— Queinnectrechus (Gaoligongtrechus) balli sp. nov.
DERIVATION OF GENUS GROUP NAME.— The genus group name (masculine) is a combination
of Gaoligong, the name of the mountain range where this taxon was discovered, and the genus
name Trechus.
DIAGNOSIS.— Adults of this subgenus (Fig. 14a) can be recognized by the following combination
of character states: size moderate (BL = 4.3 to 4.8 mm), apterous, body dark and very shiny,
micaceous; head slightly elongate, eye small, their diameter less than length of tempora; right
mandibles tridentate; mentum and submentum fused; pronotum narrowed posteriorly, narrowly
cordate, pronotal disc markedly convex and glabrous, basal angles acute but without digitiform
extensions, basal margin roundly convex and fitted to concave elytral base, laterally with two or