The Neotropical species of the genus Lithocharodes SHARP, 1876 (Coleoptera: Staphylinidae: Staphylininae: Xantholinini)
Irmler, Ulrich
Beiträge Zur Entomologie = Contributions to Entomology
2021
2021-06-30
71
1
29
85
8Y63H
Irmler, 2021
Irmler
2021
[869,1161,1843,1870]
Insecta
Staphylinidae
Lithocharodes
Animalia
Coleoptera
12
41
Arthropoda
species
ecuadoriensis
sp. nov.
Figs 27a-d, 44 H, 48 F
Type material: male, holotype: Ecuador, Sucumbios, Sacha Lodge( 76.5 W, 0.5 S), 270 melev., malaise trap, 14.- 24.5.1994, leg. Hibbs( KNHM). Paratypes: 4 femaleswith same data as holotype ( KNHM); same location, collector but 1 male, 3 females, 4.-14.3., 14.-24.3., 24.5.- 3.6.1994(3 KNHM, 1 UIC); same location and collector, 2 females, 13.- 23.4.1994(2 KNHM); Sucumbios, Sacha Lodge( 76.5°W, 0.9°S,); 270 melev., malaise trap, 1 male, 4 females, 24.5.- 3.6.1994, 22.2.- 4.3.1994leg. Hibbs(4 KNHM, 1 UIC); 2 femalesfrom same region but flight intercepttrap, 21.- 24.3.1999, leg. R. Anderon#ECU1B99047 ( KNHM); Napo, Yuturi Lodge, Rio Napo( 76°2.18'W, 0°32.54'S), 270 melev., flight intercept trap, 2 males, 20.- 21.3.1999, leg. R. Brooks, D. Brzoska, #ECU1B99 010 (1 KNHM, 1 UIC); Jatun Sacha Biol. Station( 21 kmE Puerto Napo, virgin rain forest, flight intercept trap, female, 8.8.1994, leg. F. Génier( KNHM); Zamora-Chinchipe, RioBombuscaro( 78°59'W, 4°7'S), flight intercept trap, male, 26.6.- 4.7.1996, leg. P. Hibbs, #ECU1H96 001 ( KNHM); Manabi, swamp between S. Antonioand Bachillero( 80°10'W, 0°43'S), female, July 2008, leg. W. Rossi( VAC).
Diagnosis: Males of L. ecuadoriensiscan be easily recognized by the specific shape of sternite VII with its nearly semi-circular emargination in combination with the nearly straight posterior margin of tergite VII. Females are similar to the black coloured and densely punctate species L. nigritaand L. katharinae. They differ from L. nigritaby the shorter elytra. Separation from L. katharinaeis nearly impossible in females. The head is slightly less densely punctate than in L. katharinae.
Description: Length: 5.0 mm. Colouration: Dark brown; pronotum, legs and antennae slightly lighter brown. Head: 0.75 mmlong, 0.61 mmwide; eyes large; slightly prominent; postocular sides twice as long as eyes; interantennal furrows deep; reaching anterior third of eyes; setiferous punctation deep and dense; anteriorly slightly denser than close to neck; on vertex, average of interstices between punctures as wide as diameter of punctures; small midline impunctate; space between interantennal lines impunctate except close to lines; surface without microsculpture; glossy. Antennae with first antennomere half as long as head; second and third antennomere longer than wide, conical; subsequent antennomeres wider than long and increasing in width; fourth antennomere nearly twice as wide as long; tenth antennomere nearly 2.5 times as wide as long; all antennomeres pubescent. Pronotum: 0.85 mmlong, 0.58 mmwide; widest in anterior third; anteriad, conically narrowed toward neck; in middle third distinctly narrowed, in posterior third slightly narrowed posteriad; posterior angles rounded; setiferous punctation as deep as on head but sparser; on average, interstices between punctures at least as wide as diameter of punctures; wide midline impunctate; irregular line adjacent to midline with 17 to 18 punctures; close to posterior margin impunctate; surface without microsculpture; glossy. Elytra: 0.80 mmlong, 0.78 mmwide; humeral angles obtuse but distinct; sides nearly parallel; posterior angles shortly rounded; posterior margin slightly convex with incision at suture; setiferous punctation deep and dense; on average, interstices between punctures half as wide as diameter of punctures; surface with weak isodiametric microsculpture; less shiny than head and pronotum. Abdomen with setiferous punctation as dense as on elytra but much finer; microsculpture transversely striate; deeper than on elytra; surface less shiny than elytra; sternite VII of male with deep semicircular emargination; tergite VII of male with sinuate posterior margin; nearly semi-circular central projection with adjacent emargination. Meso- and metatibiae with two subapical ctenidia each. Aedeagus long-oval with approximately rectangular anterior part; endophallus with two strings with posterior torsion; one string with large lobes in anterior part; second string densely covered by minute teeth; paramere slender and bilobed; inner lobe, straight in basal half; curved in apical half; with numerous setae at inner face; apical setae shorter and finer than basal setae; outer lobe much shorter than inner lobe; sinuate.
Etymology: The species is named after the country where the holotypewas collected.
1994-05-24
KNHM
Hibbs
Ecuador
270
-0.5
Sacha Lodge
7856
-76.5
12
41
1
Sucumbios
1994-05-24
KNHM
Hibbs
Ecuador
270
-0.5
Sacha Lodge
7856
-76.5
12
41
4
4
Sucumbios
paratype
1994-05-24
KNHM
Hibbs
Ecuador
270
13
42
-0.5
Sacha Lodge
7856
-76.5
12
41
1
Sucumbios
paratype
1994-06-03
KNHM, UIC
Hibbs
Ecuador
270
-0.5
Sacha Lodge
7856
-76.5
13
42
4
3
1
Sucumbios
paratype
[261,655,297,321]
1994-04-23
KNHM
Ecuador
13
42
2
2
Sucumbios
paratype
Ecuador
270
-0.9
Sacha Lodge
7855
-76.5
13
42
1
Sucumbios
paratype
1994-03-04
1994-06-03
1994-03-04
KNHM, UIC
Hibbs
Ecuador
13
42
5
4
1
Sucumbios
paratype
B99047
1999-03-24
KNHM
R. Anderon
Ecuador
13
42
2
2
Sucumbios
paratype
[456,756,457,481]
Yuturi Lodge & Rio
Ecuador
Napo
13
42
1
Napo
paratype
1999-03-21
KNHM, UIC
R. Brooks & D. Brzoska
Ecuador
270
-0.54233336
Jatun Sacha Biol. Station
13
-76.03633
13
42
2
2
Napo
paratype
1994-08-08
KNHM
F. Genier
Ecuador
Napo
13
42
1
Napo
paratype
1996-07-04
KNHM
P. Hibbs
Ecuador
-4.116667
RioBombuscaro
1307
-78.98333
13
42
1
Zamora-Chinchipe
paratype
2008-07
VAC
S. Antonio & W. Rossi
Ecuador
-0.71666664
Bachillero
1308
-80.166664
13
42
1
Manabi
paratype