(Proceedings submission caseby-case

392 PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES
Series 4, Volume 63, No. 12
Trechus (Trechus) qiqiensis Deuve and Kavanaugh, sp. nov.
(Figs. 20, 37b, 42a, 46–48)
TYPE MATERIAL.— Holotype, a male, in IOZ, labeled: “CASENT 1007384”/ “CHINA, Yunnan
Province, Gaoligong Shan, Nujiang Prefecture, Nujiang State Nature Reserve, No. 12 Bridge
Camp area, 16.3 airkm w of Gongshan,”/ “N27.71503°/E98.50244°, 2775 m, 15-19 July 2000,
Stop#00-23A, D.H. Kavanaugh, C.E. Griswold, Liang H.-B., D. Ubick, & Dong D.-Z. collectors”/
“IMAGE” [green label]/ “HOLOTYPE Trechus qiqiensis Deuve & Kavanaugh, sp. nov. designated
2016” [red label]. Paratypes (at total of 11): 2 males and 4 females (in CAS, IOZ, MNHN)
labeled: same as holotype, except first label “CASENT 1007380” to “CASENT 1007381” and
“CASENT 1007382” to “CASENT 1007383” and “CASENT 1007385” to “CASENT 1007386”,
respectively; 1 male and 2 females (in CAS, IOZ) labeled: “CASENT 1010345” and “CASENT
1010346” to “CASENT 1010347”/ “CHINA, Yunnan, Gongshan County, Cikai Township, 52.6 km
w of Gongshan on Dulong Valley Road, 3360-3380 m,”/ “N27.77032°/E98.44661°, 1-2 October
2002, Stop #DHK-2002-034, D.H. Kavanaugh & P.A. Marek collectors”;1 male (in CAS) labeled:
“CASENT 1015626”/ “CHINA, Yunnan, Gongshan County, Cikai Township, 48 km w of Gongshan
on Dulong Valley Road, 3330 m,”/ “N27.78075°/E98.47000°, 13 November 2004, Stop #
DHK-2004-086, D.H. Kavanaugh collector”; 1 male (in IOZ) labeled: “CASENT 1025832”/
“CHINA, Yunnan, Gongshan County, Bingzhongluo Township, Sw slope of Kawakarpu Shan, 0.3
km Sw of Chukuai Lake at campsite,”/ “N27.97686°/E98.47799°, 3750 m, 19 August 2006, Stop
#DHK-2006-082, Y. Liu collector”. All paratypes also bear the following label: “PARATYPE
Trechus qiqiensis Deuve & Kavanaugh, sp. nov. designated 2016” [yellow label].
TYPE LOCALITY.— China, Yunnan, Gongshan County, Qiqi Trail at No. 12 Camp,
N27.71503°/E98.50244°, 2775 m.
DERIVATION OF SPECIES NAME.— The species epithet, qiqiensis, is derived from the name of
the ancient trail, Qiqi Trail, passing through the type locality, and the Latin suffix, -ensis, denoting
place.
DIAGNOSIS.— Adults of this species (Fig. 20a) can be distinguished from those of all other
species in the region by the following combination of character states: size relatively large (BL =
4.0 to 4.2 mm), apterous; body color reddish-brown; eyes slightly convex; tempora glabrous, short
and convex; pronotum transverse (ratio Pw/PL = 1.44), basal angles rectangular and sharp; elytra
with striae 1 to 4 deeply impressed on disc but attenuated apically, remaining striae successively
less distinct, the outermost effaced or nearly so; recurrent stria terminated anteriorly by a slight
convexity in line with stria 7; two discal setae present, inserted on interval 3 next to stria 3; preapical
seta present and inserted in a discal position on interval 3, next to either stria 2 or 3 in forward
position near apical one-fourth of elytra; median lobe of male aedeagus large and robust, subapically
bent ventrally, apical lamella sinuate and reflexed dorsally (Fig. 20b), endophallus with a
more heavily sclerotized voluminous lobe or scaly fold.
DESCRIPTION.— Size relatively large, BL = 4.0 to 4.2 mm. Body color reddish-brown, shiny,
appendages concolorous but paler, palpi pale yellow. Body surface smooth, only head capsule
faintly alutaceous.
Head. Moderate in size; eyes only slightly projected, slightly more convex, their diameter less
than twice as long as tempora, the latter short, convex and glabrous. Frons slightly flattened; frontal
furrows deep, curved, continuous but attenuated posterior to the eyes. Two pairs of supraorbital
setae present, the anterior pair inserted in foveae. Clypeus with four setae. Labrum with six setae,
anterior margin distinctly concave. Mandibles short; right mandible distinctly tridentate with middle
tooth closer to basal tooth (premolar) than to distal tooth, left mandible with a small slightly
bifid process. Mentum and submentum not fused but suture between them only faintly impressed.