Chinecallicerus

Assing, Volker, 2019, Five new species oI Chinecallicerus Irom China (Coleoptera, Staphylinidae, Aleocharinae, Geostibini), Linzer biologische Beiträge 51 (1), pp. 285-302 : 286-289

Updated key to the species oI Chinecallicerus

1 Conspicuously large species from Qinghai and North Sichuan; length of forebody at least approximately 3.2 mm. Head (except for a glossy median band) and pronotum with conspicuously dense punctation ( Fig. 4 ). Anterior tergites of abdomen with very dense and rather coarse punctation ( Fig. 6 ).. .......................................................................2

- Length of forebody 3.0 mm at most. Head and pronotum not with conspicuously dense granulose punctation. Anterior abdominal tergites with less dense and/or distinctly finer punctation. .................................................................................................................3

2 Coloration paler: elytra pitchy-reddish, somewhat contrasting with the black head and pronotum; femora and tibiae reddish; antennomere I brown; maxillary palpomeres II and III reddish. Length of forebody approximately 3.2 mm. Punctation of pronotum granulose ( ASSING 2018: figure 25), that of elytra ill-defined and confluent. Abdomen: anterior impressions of tergites III-V punctate; discs of tergites III-V with extremely dense punctation ( ASSING 2018: figures 13-14, 9). Spermatheca smaller, maximal extension little more than 0.3 mm, and shaped as in ASSING (2018: figure 15). Qinghai ( Map 1 ). ........................................................................................ granulosissimus ASSING

- Coloration darker: elytra black, of similar coloration as head and pronotum; femora and tibiae dark-brown; antennae completely black; maxillary palpomeres II and III blackish. Length of forebody 3.6 mm. Punctation of pronotum not granulose ( Fig. 4 ), that of elytra defined and not confluent. Abdomen: anterior impressions of tergites III- V practically impunctate; discs of tergites III-V with less dense punctation ( Fig. 6 ). Spermatheca larger, maximal extension 0.44 mm, and shaped as in Fig. 7 . North Sichuan ( Map 1 ). .................................................................................. formidabilis nov.sp.

3 Abdomen very glossy, without microsculpture and with fine and conspicuously sparse punctation ( Fig. 12 ); interstices on tergites VI and VII on average at least five times as broad as diameter of punctures ( Fig. 14 ); anterior impressions of tergites III-V impunctate ( Fig. 13 ). Northwest and West Yunnan. ..........................................................4

- Abdomen with denser punctation; interstices on tergites VI and VII on average much less than five times as broad as diameter of punctures; microsculpture mostly present. .....5

4 Body larger; length of forebody approximately 2.9 mm. Antennae longer and more massive; antennomeres IV-X approximately as long as broad or weakly transverse ( ASSING 2006: figure 15). Pronotum and elytra with less fine punctation. Male tergites III with pronounced median tubercle, IV with small transverse median tubercle, and VII with horseshoe-shaped elevation in postero-median portion ( ASSING 2006: figures 18-20). Median lobe of aedeagus 0.68 mm long. Spermatheca as in ASSING (2006: figure 27). Northwest Yunnan ( Map 1 ).. ....................................................... wrasei ASSING - Body smaller; length of forebody 2.5 mm. Antennae shorter and much more slender; antennomeres IV-X all distinctly oblong ( Fig. 10 ). Pronotum and elytra with finer punctation ( Fig. 11 ). Only male tergite III with median tubercle ( Figs 12-13 ); tergites IV and VII unmodified. Median lobe of aedeagus much smaller, 0.54 mm long ( Figs 15-16 ). West Yunnan ( Map 1 ).............................................................. glabriventris nov.sp.

5 Pronotum large in relation to head and weakly convex in cross-section ( Fig. 24 and ASSING 2018: figures 21, 27), at least approximately 1.15 times as broad as long and at least approximately 1.3 times as broad as head. Head distinctly transverse. .......................6

- Pronotum smaller in relation to head and mostly more strongly convex, significantly less than 1.3 times as broad as head.. ..................................................................................9

6 Abdominal tergite VI with pronounced anterior impression ( ASSING 2018: figure 23). Head ( ASSING 2018: figure 21) approximately 1.2 times as broad as long. Pronotum ( ASSING 2018: figure 21) approximately 1.15 times as broad as long and 1.3 times as broad as head, with fine, but distinct punctation. Elytral punctation extremely dense and somewhat asperate. Larger species; length of forebody 2.7-3.0 mm. Antennae ( ASSING 2018: figure 22) long and slender; antennomeres IV-X distinctly oblong. Spermatheca as in ASSING (2018: figure 16). North Sichuan. ............... transversus ASSING

- Abdominal tergite VI without anterior impression ( ASSING 2018: figures 29, 37). Head ( ASSING 2018: figures 27, 34) less transverse, 1.12-1.13 times as broad as long. Pronotum ( ASSING 2018: figures 27, 34) relatively larger, at least nearly 1.4 times as broad as head. Elytral punctation not asperate. Smaller species; length of forebody 2.1- 2.2 mm. Antennae ( ASSING 2018: figures 28, 35) much shorter and much more massive, antennomeres VI-VIII transverse. Northwest Yunnan ..........................................7

7 Pronotum ( ASSING 2018: figure 34) 1.6 times as broad as head; middle of posterior margin distinctly produced; punctation fine, but distinct. Antennomere IV weakly oblong; antennomere X weakly transverse ( ASSING 2018: figure 35). Punctation of elytra granulose ( ASSING 2018: figure 34). Maxillary palpomere III dilated. Male tergites III, IV, and VII each with a pronounced median tubercle posteriorly ( ASSING 2018: figures 36-37). Median lobe of aedeagus as in ASSING (2018: figures 50-51). Gaoligong Shan. ............................................................................... trituberculatus ASSING

- Pronotum approximately 1.3-1.4 times as broad as head ( Fig. 24 and ASSING 2018: figure 27); middle of posterior margin not produced...........................................................8

8 Body larger, length of forebody 2.6 mm. Antenna ( Fig. 23 ) slender, with distinctly oblong antennomeres IV-VII; antennomere IV of similar shape as antennomere V. Median dorsal portion of head flat and matt ( Fig. 24 ). Pronotum flat with extensively impressed disc and distinct punctation ( Fig. 24 ). Abdomen ( Fig. 25 ) with rather coarse punctation. Male tergites VII and VIII with conspicuous modifications ( Figs 26-27 ). Median lobe of aedeagus as in Figs 28-29 . North Sichuan. ..................... feldmanni nov.sp.

- Body smaller; length of forebody 2.0 mm. Antenna massive, with transverse antennomeres IV-VII; antennomere IV much smaller than antennomere V ( ASSING 2018: figure 28). Median dorsal portion of head convex in cross-section and moderately glossy. Pronotum convex in cross-section and with extremely fine, barely visible punctation ( ASSING 2018: figure 27). Abdomen with extremely fine punctation. Spermatheca as in ASSING (2018: figure 32). Gaoligong Shan.............. grandicollis ASSING

9 Head ( ASSING 2018: figure 8) of orbicular shape, slightly longer than broad; lateral margins behind eyes smoothly convex, posterior angles obsolete. Eyes ( ASSING 2018: figure 9) flat, not protruding from lateral contours of head, and very small, less than 0.3 times as long as postocular region in dorsal view. Elytra ( ASSING 2018: figure 8) short, approximately 0.75 times as long as pronotum. Posterior margin of abdominal tergite VII only with narrow rudiment of a palisade fringe. Antennae ( ASSING 2018: figure 10) slender; antennomeres IV-X all longer than broad. Spermatheca as in ASSING (2018: figure 12). Sichuan. ............................................................................... orbiculatus ASSING

- Head of different shape; posterior angles at least weakly indicated. Eyes distinctly convex and much larger, more than half as long as postocular region in dorsal view. Elytra longer. Posterior margin of tergite VII with distinct palisade fringe. .....................10

10 Whole forebody with pronounced microsculpture, practically matt ( Fig. 31 and ASSING 2015: figures 1-2, 4, 10-11, 13). Head and pronotum with barely noticeable punctation.. 11

- Forebody with some shine; at least head or elytra with superficial microculpture. Head and/or pronotum mostly with more distinct punctation. ....................................................12

11 Body larger; length of forebody 2.6 mm. Pronotum weakly convex in cross-section and distinctly transverse ( Fig. 31 ). Legs brown. Abdominal tergite VI with pronounced anterior impression ( Fig. 34 ). Anterior impressions of tergites III-VI distinctly punctate in median portion and impunctate in lateral portions ( Fig. 34 ). Male tergite VII with pronounced, spine-shaped and erect tubercle in postero-median portion ( Figs 37-38 ). Posterior margin of male tergite VIII with three pronounced teeth on either side. Median lobe of aedeagus as in Figs 35-36 . North Sichuan ...................... discrepans nov.sp.

- Body smaller; length of forebody 2.4 mm long at most. Pronotum distinctly convex in cross-section and indistinctly transverse at most. Legs yellowish. Abdominal tergite VI without anterior impression. Anterior impressions of tergites III-V practically impunctate. .......................................................................................................................14

12 Body larger; length of forebody 2.4 mm. Antenna longer, 2.4-2.5 mm long; all antennomeres distinctly oblong ( ASSING 2015: figure 12). Eyes more strongly convex and larger, longer that distance between posterior margin of eye to posterior constriction of head ( ASSING 2015: figure 10). Spermatheca as in ASSING (2015: figure 15). Southeast Yunnan. ........................................................................... reticulatus ASSING

- Body smaller; length of forebody 2.1 mm long at most. Antennae shorter, 1.8 mm long at most; at least antennomeres IV-VIII weakly transverse or as long as broad. Eyes less convex and smaller, approximately as long as distance between posterior margin of eye to posterior constriction of head at most............................................................................13

13 Maxillary palpi blackish-brown, except for the needle-shaped palpomere IV. Antennae blackish and longer, approximately 1.8 mm long; antennomeres VI-X not transverse, X even somewhat oblong ( ASSING 2015: figure 3). Male tergite VII with small median tubercle ( ASSING 2015: figure 5). Posterior margin of male tergite VIII truncate in the middle ( ASSING 2015: figure 6). Median lobe of aedeagus as in ASSING (2015: figures 8-9). Northeast Yunnan. ............................................................................... subater ASSING

- Maxillary palpi yellowish. Antennae reddish to reddish-brown and approximately 1.5 mm long; antennomeres IV-X at least weakly transverse ( ASSING 2018: figure 1). Male tergite VII with long median carina posteriorly ( ASSING 2018: figures 2-3). Male tergite VIII with smoothly convex posterior margin ( ASSING 2018: figure 2). Median lobe of aedeagus as in ASSING (2018: figure 4-5). Spermatheca as in ASSING (2018: figure 6). North Sichuan ............................................................................................ carinatus ASSING

14 Larger species; length of forebody 2.7 mm. Head weakly oblong. Pronotum slender, as long as broad, with sinuate lateral margins posteriorly, and with very dense granulose punctation ( Fig. 18 ). Abdomen ( Fig. 19 ) with rather coarse punctation on tergites III- VI. Male tergites III, IV, and VII with distinctive modifications ( Figs 19-20 ). Median lobe of aedeagus as in Figs 21-22 . North Sichuan ......................................... reuteri nov.sp.

- Smaller species; length of forebody <2.5 mm. Head transverse. Pronotum noticeably transverse; lateral margins not sinuate and punctation not granulose. Abdomen with very fine punctation...........................................................................................................15

15 Coloration paler: anterior abdominal segments, abdominal apex, and antennae yellowish-brown to reddish-brown. Eyes weakly bulging and smaller, distinctly shorter than postocular region in dorsal view. Elytra with granulose punctation and weak longitudinal elevation on either side of suture ( ASSING 2004: figure 8). Spermatheca as in ASSING (2004: figure 13). Northwest Yunnan ....................................... schuelkei ASSING

- Coloration darker: abdomen and antennae blackish-brown to blackish. Eyes bulging and larger, approximately as long as postocular region in dorsal view. Elytra with fine, not distinctly granulose punctation....................................................................................16

16 Antennomere IV approximately as long as wide, V-X oblong ( ASSING 2006: figure 3). Elytra at suture distinctly longer than pronotum. Legs yellowish. Posterior margin of male tergite VIII produced in the middle and somewhat truncate, but not distinctly serrate ( ASSING 2006: figure 8). Median lobe of aedeagus 0.53 mm long, shaped as in ASSING (2006: figures 10-11). West Yunnan. ........................................ laevigatus ASSING

- Antennomere IV wider than long ( ASSING 2017: figure 2). Elytra approximately as long as, or shorter than pronotum ( ASSING 2017: figure 1). Coloration of mid- and hindlegs predominantly brown. Posterior margin of tergite VIII serrate or bicuspidate. ..........17

17 Larger species; length of forebody 2.4 mm. Antennae longer, length 2.0 mm; antennomeres V-X weakly oblong ( ASSING 2017: figure 2). Head and pronotum glossy ( ASSING 2017: figure 1). Elytra shorter than pronotum ( ASSING 2017: figure 1). Anterior half of tergite VII with sparse, but distinct punctation ( ASSING 2017: figure 4). Male tergite VII ( ASSING 2017: figures 3-4) with pronounced fin-shaped median tubercle. Male tergite VIII bicuspidate posteriorly ( ASSING 2017: figure 4). Median lobe of aedeagus larger, 0.6 mm long, and shaped as in ASSING (2017: figures 5-6). Sichuan. ..................................................................................................... pinnatus ASSING

- Smaller species; length of forebody 2.2 mm. Antennae shorter, antennomeres V-X approximately as long as wide or weakly transverse ( ASSING 2009: figure 3). Head and pronotum with subdued shine. Elytra approximately as long as pronotum ( ASSING 2009: figure 2). Abdominal tergite VII virtually impunctate in anterior half ( ASSING 2009: figure 4). Male tergite VII with small smooth median tubercle. Posterior margin of tergite VIII serrate ( ASSING 2009: figure 5). Median lobe of aedeagus smaller, 0.44 mm long, shaped as in ASSING (2009: figure 7). West Yunnan ................... serratus ASSING

Figures

Map 1: Distributions of Chinecallicerus species in China: C. granulosissimus (white circle); C. formidabilis (black circle); C. wrasei (white star); C. glabriventris (black star); C. reuteri (white triangle); C. feldmanni (white triangle); C. discrepans (black triangle).

Figs 1-7: Chinecallicerus formidabilis: habitus (1); antero-median dorsal portion of head (2); antenna (3); forebody (4); abdomen (5); median portion of tergite III (6); spermatheca (7). Scale bars: 1, 3-5: 1.0 mm; 7: 0.2 mm; 2, 6: 0.1 mm.

Figs 8-16: Chinecallicerus glabriventris: habitus (8); median dorsal portion of head (9); antenna (10); forebody (11); male abdomen (12); anterior portion of male abdomen in dorso-lateral view (13); median portion of tergite VI (14); median lobe of aedeagus in lateral and in ventral view (15- 16). Scale bars: 8: 1.0 mm; 10-13: 0.5 mm; 15-16: 0.2 mm; 9, 14: 0.1 mm.

Figs 23-29: Chinecallicerus feldmanni: habitus (23); forebody (24); male abdomen (25); tergites VII and VIII of male abdomen (26); segments VII and VIII of male abdomen in dorso-lateral view (27); median lobe of aedeagus in lateral and in ventral view (28-29). Scale bars: 23-25: 1.0 mm; 26- 27: 0.5 mm; 28-29: 0.2 mm.

Figs 30-36: Chinecallicerus discrepans: habitus (30); forebody (31); antenna (32); labium (33); male abdomen (34); median lobe of aedeagus in lateral and in ventral view (35-36). Scale bars: 30- 32, 34: 1.0 mm; 35-36: 0.2 mm; 33: 0.1 mm.

Figs 37-38: Chinecallicerus discrepans: tergites VII and VIII of male abdomen (37); segments VII and VIII of male abdomen in dorso-lateral view (38). Scale bars: 0.5 mm.

Figs 17-22: Chinecallicerus reuteri: habitus (17); forebody (18); male abdomen (19); segments VII and VIII of male abdomen in dorso-lateral view (20); median lobe of aedeagus in lateral and in ventral view (21-22). Scale bars: 17-19: 1.0 mm; 20: 0.5 mm; 21-22: 0.2 mm.