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DEUVE ET AL.: CARABID BEETLE FAUNA OF THE GAOLIGONG MOUNTAINS 429<br />
distinguished from those of the latter by the truncate, almost bifurcate, median tooth of the mentum<br />
(simple in E.fortipes members), elytral stria 5 not more deeply impressed basally (distinctly<br />
more deeply impressed in E.fortipes members), recurrent stria longer (shorter in E.fortipes members)<br />
and terminated on interval 7 (terminated on interval 5 in E.fortipes members), and the preapical<br />
seta inserted 1.5 times as far from apical elytral margin as from sutural margin (inserted about<br />
equidistant from apical and sutural margins in E.fortipes members).<br />
HABITAT DISTRIBUTION.— The unique holotype female of this species was found on the<br />
ground under a stone or log in a managed conifer forest along a roadcut at an elevation of 2580 m.<br />
No other trechines were found in this area.<br />
GEOGRAPHICAL DISTRIBUTION WITHIN THE GAOLIGONG SHAN.— Fig. 33b. This species is<br />
known only from a single female specimen from the type locality in western Tengchong County in<br />
the southern part of the Gaoligong Shan region. This locality is in Core Area 6.<br />
OVERALL GEOGRAPHICAL DISTRIBUTION.— This species currently is known only from Tengchong<br />
County in the southern part of the Gaoligong Shan region, western Yunnan Province, China.<br />
Genus Trechepaphiama Deuve and Kavanaugh, gen. nov.<br />
TYPE SPECIES.— Trechepaphiama gaoligong sp. nov.<br />
DERIVATION OF GENUS GROUP NAME.— The genus group name (masculine) is a combination<br />
of two other trechine genus group names, Trechus and Epaphiama.<br />
DIAGNOSIS.— Adults of this genus (Fig. 34a) can be recognized by the following combination<br />
of character states: size large (BL = 4.2 mm), apterous; body color reddish brown, dorsum shiny,<br />
slightly iridescent, dorsal surface glabrous except for isolated fixed setae typical for trechines, eyes<br />
also glabrous, small, only slightly convex; tempora glabrous; right mandible (Fig. 16h) with premolar<br />
tooth fused with retinaculum, anterior tip of retinaculum enlarged to form a distinct tooth<br />
and displaced distally, posterior tip of retinaculum reduced, nearly flattened; mentum and submentum<br />
not fused; mentum with median tooth simple with apex rounded; submentum [probably] with<br />
six setae [only five setae visible in unique female holotype of type species]; pronotum slightly convex,<br />
disc glabrous, basal foveae only slightly distinct, median basal area delimited laterally by<br />
oblique furrows, basal margin slightly curved medially, slightly sinuate and oblique laterally; elytra<br />
broadly rounded, more narrowed apically than basally, humeri broad, disc convex with striae<br />
finely impressed, slightly punctate, lateral striae attenuated, recurrent stria deeply impressed, its<br />
anterior end straight, almost continuous anteriorly with the apex of stria 5; no discal setae present,<br />
preapical seta present, inserted next to stria 2.<br />
COMMENTS.— This genus, known from only a single female specimen, belongs to the “Epaphiopsis<br />
Complex” of genera as evidenced by the dentition of the mandibles. Its members can be<br />
distinguished from those of other genera of this lineage by the absence of elytral discal setae, which<br />
is exceptional among trechines, and by their markedly convex, dorsally inflated elytra, imparting<br />
an appearance similar to that of Epaphiama Jeannel (1962) members — short and convex. In contrast,<br />
Trechepaphiopsis members are similar in habitus to small Epaphiopsis members while those<br />
of Epaphiotrechus are more similar in habitus to large Trechus members. A better understanding of<br />
phylogenetic affinities of this new genus must await discovery of a male and study of its genital<br />
structure and/or comparative molecular study.<br />
GEOGRAPHICAL DISTRIBUTION.— This genus currently is known only from the type species,<br />
which is known only from the southcentral part of the Gaoligong Shan region of western Yunnan<br />
Province, China.