(Proceedings submission caseby-case

430 PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES
Series 4, Volume 63, No. 12
Trechepaphiama gaoligong Deuve and Kavanaugh, sp. nov.
(Figs. 16h, 34, 37a, 46–48)
TYPE MATERIAL.— Holotype, a female, in IOZ, labeled: “CASENT 1001926”/ “CHINA, Yunnan
Province, Gaoligongshan Mountains, Nujiang Prefecture, 9 [actually 9.3] km ESE of Pianma,
25°59.6’N/ 98°37.6’E.”/ “2450 [actually 2460-2470] m, 15-18 October 1998, Stop #98-118D D.H.
Kavanaugh, C.E. Griswold, C. Ferraris & C.-L. Long collectors”/ “IMAGE” [green label]/
“HOLOTYPE Trechepaphiama gaoligong Deuve & Kavanaugh, sp. nov. designated 2016” [red
label].
TYPE LOCALITY.— China, Yunnan, Gaoligong Shan, Lushui County, 9.3 km ESE of Pianma,
N25.99363°/ E98.66651°, 2460-2470 m.
DERIVATION OF SPECIES NAME.— The species epithet, gaoligong, is a noun in apposition,
derived from the name of the mountain range, the Gaoligong Shan, in which the holotype was collected.
DIAGNOSIS.— Adults of this species (Fig. 34a) can be distinguished from those of all other
species in the region by the following combination of character states: size large (BL = 4.2 mm),
apterous; body color reddish brown, dorsum shiny; eyes reduced, their diameter about equal to
length of tempora, the latter distinctly convex and glabrous; pronotum moderately transverse (ratio
Pw/PL = 1.26), basal angles subrectangular; elytra broad, markedly convex, slightly inflated,
humeri broadly rounded, striae 1 to 5 deeply impressed and slightly punctate, more lateral striae
more or less effaced, intervals 1 to 4 slightly convex, more lateral intervals flat; recurrent stria anteriorly
nearly continuous with posterior end of stria 5; discal setiferous pores absent; preapical seta
present, inserted on interval 3 next to stria 2.
DESCRIPTION.— Size large, BL 4.2 mm. Body color reddish brown, appendages concolorous,
except palpi yellowish brown, dorsum smooth, shiny, pronotum and elytra very faintly iridescent,
head faintly alutaceous due to moderately impressed isodiametric microsculpture
Head. Moderate in size, slightly broad; eyes small, only slightly projected laterally, their diameter
about equal to length of tempora, the latter short, convex and glabrous. Frons only slightly convex,
with frontal furrows deeply impressed but less so posterior to hind margins of eyes. Two pairs
of supraorbital setae present, the anterior pair inserted in distinct foveae. Clypeus with four setae.
Labrum with six setae, anterior margin moderately concave. Right mandible (Fig. 16h) with premolar
tooth fused with retinaculum, anterior tip of retinaculum enlarged to form a distinct tooth
and displaced distally, posterior tip of retinaculum reduced, nearly flattened. Left mandible with
only a relatively small, feebly trifid tooth. Mentum and submentum not fused. Mentum with medial
tooth broad, apically rounded, about one-half the length of the lateral lobes. Submentum with
four setae anteriorly. Gula broad. Genae with a single ventral seta one each side. Antennae rather
short, only about two antennomeres extended posteriorly beyond basal pronotal margin; antennomeres
2 and 4 about equal in length, antennomere 3 slightly longer.
Pronotum. Slightly narrow (ratio Pw/PL = 1.26), with greatest width anterior to middle, only
slightly narrowed posteriorly; lateral margins rounded, straightened for a short distance posteriorly,
then very slightly sinuate just anterior to basal angles, the latter blunt and subrectangular, very
slightly and bluntly projected laterally; basal margin with median region slightly and convexly projected
posteriorly. Disc distinctly convex, with median longitudinal impression very finely
impressed, superficial, effaced in the median anterior area but extended to basal margin; basal
foveae distinct but shallow; median basal area small, delimited laterally by a pair of oblique furrows,
smooth except for several short longitudinal depressions; basal margin slightly bisinuate,
slightly convex medially; lateral borders slender, gradually widened posteriorly, faintly reflexed