(Proceedings submission caseby-case

Recommendations

Info

424 PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES Series 4, Volume 63, No. 12 end abruptly terminated in the posterior end of stria 5. Parascutellar setiferous pore present at base at common origin of discal striae 1 and 2. Only one discal setiferous pore present, inserted at anterior two-fifth of elytral length next to stria 3. Only one discal setiferous pore present, inserted slightly anterior to middle next to stria 3. Preapical seta present, inserted on interval 3 next to stria 2 and about equidistant from apical and sutural elytral margin. Umbilicate setal series with setae of humeral group equidistance from each other and setae of median group inserted slightly posterior to middle. Legs. Short, protibiae with longitudinal furrow. 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. 31b) with sagittal aileron very small, shaft moderately broad basally, then gradually narrowed apically to a narrowly rounded apex; endophallus with a faintly sclerotized scaly area distinctly elongate and narrowed distally. COMMENTS.— This species appears to be very closely related (perhaps sister species) to T.monochaetus, but its male members can be distinguished from those of the latter by having the base of the median lobe of the male aedeagus narrower (broader in T.monochaeta members, see Fig. 30b) and the scaly sclerotized area of the endophallus distinctly narrowed distally (of more equal width throughout in T.monochaeta males). HABITAT DISTRIBUTION.— Members of this species have been collected by sifting leaf litter from forests of scattered, large Abies sp. trees with a dense understory of bamboo or Rhododendron spp. at elevations ranging from 3221 to 3290 m. Specimens of Trechus shiyueliang andT. shibalicus were collected in one or more of the same litter samples. Specimens of T.unipilosa were also collected at 3100 m elevation under stones at the open edges of a small stream draining a north-facing glacial cirque with a large snowfield in its basin (Fig. 40b). A specimen of Trechepaphiopsis unisetulosa sp. nov. was also collected in this area, at the upper limit of the altitudinal range of this last mentioned species. GEOGRAPHICAL DISTRIBUTION WITHIN THE GAOLIGONG SHAN.— Fig. 31c. we examined a total of 18 specimens (13 males and 5 females) from sites on the eastern slope of the northcentral part of the Gaoligong Shan in Fugong County (see Type material above for exact collection data). All of these sites are in Core Area 3. OVERALL GEOGRAPHICAL DISTRIBUTION.— This species currently is known only from Fugong County in the northcentral part of the Gaoligong Shan region, western Yunnan Province, China. Genus Epaphiotrechus Deuve and Kavanaugh, gen. nov. TYPE SPECIES.— Epaphiotrechus fortipesoides sp. nov. Derivation of genus group name.— The genus group name (masculine) is a combination of two other trechine generic names, Epaphius and Trechus. DIAGNOSIS.— Adults of this genus (Fig. 33a) can be recognized by the following combination of character states: size large (BL = 4.5 to 4.7 mm), apterous; body color dark piceous with elytral interval 1 and lateral areas of pronotum and elytra more or less reddish; dorsum shiny, distinctly iridescent, dorsal surface glabrous except for isolated fixed setae typical for trechines, eyes also glabrous; right mandible (Fig. 16g) with premolar not fused with retinaculum but closely associated with the latter [possibly representative of an intermediate state in the evolution of the “bidentate” mandibular type (see discussion above for genus Trechus)], anterior tip of retinaculum enlarged as a distinct tooth and displaced anteriorly (but not quite as far as in members of Trechepaphiopsis species); pronotum with basal angles small and rectangular; elytra elongate, oblong,
DEUVE ET AL.: CARABID BEETLE FAUNA OF THE GAOLIGONG MOUNTAINS 425 slightly flattened along the median suture area, striae finely impressed, crenulate or finely punctate, lateral striae partly effaced but striae 6 and 7 still evident; two discal setae present on interval 3 next to stria 3, inserted near the anterior one-sixth and near mid-elytral length, respectively; preapical seta present, inserted next to stria 2. COMMENTS.— when Uéno (1999) described Trechus (s.str.) fortipes, he noted that it was a “strange species similar to certain Epaphiopsis”, with the distinct premolar on the right mandible. However, characters of the male aedeagus, particularly the presence of a distinct endophallic sclerite, led him to consider this species as a basal member of genus Trechus in which the plesiomorphic right mandibular dentition was retained. GEOGRAPHICAL DISTRIBUTION. This genus currently is known from only two species, both found only in the southern part of the Gaoligong Shan region of western Yunnan Province, China. Key for Identification of Adults of Epaphiotrechus Species of the Gaoligong Shan Region 1. Median tooth of mentum small and simple, apex not bifid; elytra with stria 5 distinctly deepened at the base, recurrent stria short, terminated anteriorly at a slight convexity at apex of stria 5; preapical seta inserted equidistant from both apical and sutural margins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E.fortipes (Uéno) Median tooth of mentum long and wide, apex bifid; elytra with stria 5 not or only faintly deepened at the base, recurrent stria long, terminated anteriorly at a slight convexity at apex of stria 6; preapical seta inserted closer to sutural than to apical margin . . . E. fortipesoides sp. nov. Epaphiotrechus fortipes (Uéno), 1999 (Fig. 32, 46-48) Trechus (s.str.) fortipes Uéno, 1999a: 219. Epaphiotrechus fortipes (Uéno), NEW COMBINATION TYPE MATERIAL.— Holotype, a male, in NSMT. Type locality: China, Yunnan, Gaoligong Shan, Baoshan County, N24°57′/ E98°45′, 2200-2500 m NOTES ON TYPE MATERIAL.— we have not had an opportunity to study the holotype or any other specimens of this species. Features noted below are based on Uéno’s (1999a) original description and illustrations. DIAGNOSIS.— Adults of this species (see Uéno 199a, Fig. 4) can be distinguished from those of all other species in the region by the following combination of character states: Size large (BL = 4.5 mm), apterous; female holotype with unusually broad protarsomeres; body color dark piceous, slightly paler reddish on elytral interval 1; right mandible tridentate; mentum with median tooth short and simple; pronotum slightly narrowed (ratio Pw/PL = 1.26), with basal angles small and rectangular; elytra elongate, slightly flattened medially, striae finely impressed, medial three or four striae distinctly crenulate (due to strial punctures), more lateral striae slightly effaced, but striae 6 and 7 evident, stria 5 deepened at its base; parascutellar striole present, slightly elongate; recurrent stria short, terminated near apex of stria 5; two discal setiferous pores present, inserted at anterior one-sixth and slightly posterior to middle, respectively, on interval 3 near stria 3; preapical seta present, inserted on interval 3 next to stria 2 and about equidistant from apical and sutural elytral margins; median lobe of male aedeagus (see Uéno 1999a, Figs. 5 and 6) with apex, expanded, securiform in lateral view; endophallus with distinct, elongate-triangular sclerite. HABITAT DISTRIBUTION.— No members of this species were found during field collecting for this project, and no habitat information accompanied the type material. Uéno (1999a) suggested that the type locality was located “near the lower edge of the Rhododendron zone. He visited the
Page 2 and 3:
Copyright © 2016 by the California
Page 4 and 5:
270 PrOCeedINgS OF THe CALIFOrNIA A
Page 6 and 7:
Page 8 and 9:
Page 10 and 11:
Page 12 and 13:
Page 14 and 15:
Page 16 and 17:
Page 18 and 19:
Page 20 and 21:
Page 22 and 23:
Page 24 and 25:
Page 26 and 27:
Page 28 and 29:
Page 30 and 31:
Page 32 and 33:
Page 34 and 35:
Page 36 and 37:
Page 38 and 39:
Page 40 and 41:
Page 42 and 43:
Page 44 and 45:
Page 46 and 47:
Page 48 and 49:
Page 50 and 51:
Page 52 and 53:
Page 54 and 55:
Page 56 and 57:
322 PrOCEEdINGS OF ThE CalIFOrNIa a
Page 58 and 59:
Page 60 and 61:
Page 62 and 63:
Page 64 and 65:
330 PROCeeDINGS OF THe CALIFORNIA A
Page 66 and 67:
332 PROCeeDINGS OF THe CALIFORNIA A
Page 68 and 69:
334 PROCEEDINGS OF THE CALIFORNIA A
Page 70 and 71:
Page 72 and 73:
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
Page 106 and 107:
Page 108 and 109: 374 PROCEEDINGS OF THE CALIFORNIA A
show all

(Proceedings submission caseby-case

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?