Tychobythinus algiricus ( Raffray, 1871 )

Sabella, Giorgio, Viglianisi, Fabio Massimo, D’Urso, Vera & Nouira, Said, 2014, A review of the Tychobythinus algiricus species group from North Africa (Coleoptera: Staphylinidae: Pselaphinae), Zootaxa 3893 (4), pp. 579-586 : 580-584

publication ID

https://doi.org/ 10.11646/zootaxa.3893.4.7

publication LSID

lsid:zoobank.org:pub:1BACFDA5-7457-496F-BDE3-0F509F29879A

DOI

https://doi.org/10.5281/zenodo.6130133

persistent identifier

https://treatment.plazi.org/id/03F63E52-9344-9A4D-FF1C-F9E2FE25FC16

treatment provided by

Plazi

scientific name

Tychobythinus algiricus ( Raffray, 1871 )
status

 

Tychobythinus algiricus ( Raffray, 1871) View in CoL

( Figs 1A–D View FIGURES 1 A – F , 2C–E View FIGURES 2 A – E , 3 View FIGURE 3 )

Bythinus algiricus Raffray 1871: 160 View in CoL .

Bythinus algericus Raffray 1873: 366 , pl. XV, fig. 6 (antenna); Pic 1901: 403; Normand 1904: 218; Peyerimhoff 1910: 288.

Bythinus (Machaerites) algiricus Reitter 1882: 483 View in CoL .

Bryaxis (groupe V) algirica Raffray 1904: 275 View in CoL .

Bythinopsis algerica Raffray 1908: 283 ; Raffray 1924: 85.

Bythinopsis algirica Raffray 1911: 125 ; Martinez de la Escalera 1914: 99; Normand 1935: 85.

Chiasmatobythus algericus Jeannel 1956: 68 , figs 61–62 (habitus), 63 (aedeagus).

Chiasmatobythus algiricus Kocher 1958: 207 .

Tychobythinus algericus Besuchet 1962: 349 ; 1963a: 230; 1963b: 219; Kocher 1969: 5; Ribera Almerje 1972: 137; Besuchet 1999: 52.

Tychobythinus algiricus Löbl & Besuchet 2004: 314 View in CoL .

Bythinus tuniseus Pic 1901: 403 View in CoL ; Normand 1904: 218 (synonymized by Peyerimhoff 1910: 289).

Bryaxis (groupe V) tunisea Raffray 1904: 276 View in CoL .

Bythinopsis tunisea Raffray 1908: 284 .

Bythinopsis algerica var. tunisea Raffray 1924: 85 .

Chiasmatobythus remyi Jeannel 1956: 69 View in CoL (synonymized by Besuchet 1999: 52); Kocher 1958: 208.

Tychobythinus remyi Kocher 1969: 5 View in CoL .

Tychobythinus occidentalis Besuchet 1962: 348 View in CoL (syn. nov.).

Material examined. NORTHERN TUNISIA: Tabarka governorate: Aïn Draham , 2 males and 1 female, VI.1938 (H. Normand) ( INAT); idem, 1 male and 1 female, X.1938 (H. Normand) ( INAT); idem, 1 male and 1 female, VI.1939 (H. Normand) (CCo); idem, 1 male and 1 female, VI.1939 (H. Normand) ( MHNG); idem, 1 male and 1 female, 02.X.1976 (H. Franz) ( MHNG); idem, 1900, 1 male (holotype of Bythinus tuniseus ) (M. Pic) ( MNHN, ex coll. Peyerimhoff). Bèja governorate: km 32 road Aïn Draham - Bèja, 800 m, 1 male, 30.XI.1997, under stone (G. Sabella & A. Alicata) ( DBUC); Le Kef governorate: Le Kef, 3 females, IV.1940 (H. Normand) ( INAT); idem, 3 ex., XI.1939 (H. Normand) (CCo); idem, 2 ex., VI.1951 (H. Normand) (CCo); idem, 1 male, VI.1939 (H. Normand) ( MHNG); idem, 1 male and 2 females, XI.1939 (H. Normand) ( MHNG); idem, 2 females, VI.1949 (H. Normand) ( MSNM); Jendouba governorate: Camp de la Santé, 1 male (H. Normand) ( INAT); Bulla Regia, 1 male and 1 female ( MNHN, ex. coll. Pic). NORTHERN ALGERIA: Algeria, 1 female (type algiricus Raffray ) ( MNHN); El Tarf province: Marais de la Calle, 1 male and 4 females, V.1935 (H. Normand) ( INAT); idem, 3 ex., V.1938 (H. Normand) (CCo); idem, 4 females, V.1938 (H. Normand) ( MHNG); idem, 1 female (H. Normand) ( MSNM); Annaba province: Edough Mount, 1 female (sub Machaerites theryi ), 09.IV.1893, ( MNHN, ex. coll. Pic); idem, 1 female (sub Machaerites theryi ), 08.V.1893, ( MNHN, ex. coll. Pic); Annaba (new name of Bône), 1 male (sub Machaerites jugurthae ) ( MNHN, ex. coll. de Saulcy); Jijel province: El Milia, 3 ex., 10.X.1928 (H. Normand) ( INAT); Blida province: Mouzaïa Mount, 1 female, IV.1909 ( INAT); idem, 1 male, IV.1909 ( MHNG); Chiffa, 1 ex. ( MNHL); Chiffa Gorges , 1 male, 25.IV.1895 ( MHNG); Atlas de Blida, Chréa , Les Glacières , 1.100 m, 1 female, 3.V.1988 (C. Besuchet, I. Löbl & D. Burckhardt) ( MHNG); Sidi Zraïm near Mouzaïa, 11.V.1934, 1 male and 1 female ( MNHN, ex. coll. Peyerimhoff); Zaouïa de Mouzaïa, 1 male and 1 female ( MNHN, ex. coll. Peyerimhoff); Platrière marsh, near Mouzaïa, 1 female, 01.V.1894 ( MNHN, ex. coll. Peyerimhoff); Kehir river of Mouzaïa, 1 male, 02.VII.1905 ( MNHN, ex. coll. Peyerimhoff); Kaïrons river of Mouzaïa, 1 female, VIII.1905 ( MNHN, ex. coll. Peyerimhoff); Tipasa province: Koléa , Oum el Hallouf , 2 males and 1 female (P. M. de Peyerimhoff) ( MHNG); idem, 3 males and 2 females ( MHNG) ; idem, 5 males and 1 female ( MNHN, ex. coll. Peyerimhoff); idem, 1 male (sub Machaerites theryi ) ( MNHN, ex. coll. de Saulcy); idem, 1 male and 1 female ( MNHN, ex. coll. Sainte Claire Deville); idem, 2 ex. ( MNHL); Algiers province: Alger, 2 males ( MNHN, ex. coll. de Saulcy); Masafran marsh , 1 female ( MHNG); MOROCCO: Tanger-Tétouan region: Boucharen , near Larache, 3 ex. ( INAT); idem, 4 males and 3 females, V.1910 ( MHNG); idem, 04.V.1910, 4 males and 3 females ( MNHN, ex coll. Peyerimhoff and coll. Raffray); Larache, 2 males and 2 females (coll. Raffray, MNHN); Khémis of Sahel, near Larache, 4 females, 03.IV.1959 (C. Besuchet) ( MHNG); Moulay Bousselham, Merja , 1 male, 04.II.1966 ( Lapin ) ( MHNG); Gharb-Chrarda-Béni Hssen region: Moulay Bousselham , Merja , 1 male, 04.II.1966 ( Lapin ) ( MHNG); idem, Rharb, 2 males, 22.XII.1968 (Lapin) ( MHNG); Sebou river , near Kenitra, 1 female, IV.1960 (R. Mussard) ( MHNG); Rabat region: Fouarat river , Mamora forest , 1 male, 21.IV.1962 (R. Mussard) ( MHNG); idem, 1 male, 26.I.1962 (R. Mussard) ( MHNG); Fes-Boulemane region: Dayèt Aouaoua , south of Imouzzer , 1 male, 16.VII.1963 (R. Mussard) ( MHNG); Meknès-Tafilalet region: Zaouïa Ifrane, 1.600 m, 1 male, VIII.1950, (C. Remy) (coll. Raffray, MNHN); Tadla-Azilal region: Beni-Mellal, VIII.1950, 1 female (holotype of Chiasmatobythus remyi ) ( MNHN); Souss Massa Draâ region: Tazentoute , Wit Tandoum cave , subterrain river , 1 female, 10.VIII.1971 (J. N. Romero) ( MHNG). Marrakech-Tensift-El Haouz region: south slope of Tizi-n-Test , 1.600 m, 1 female (holotype of Tychobythinus occidentalis ) (C. Besuchet) ( MHNG); idem, 1.600 m, 1 female (paratype of Tychobythinus occidentalis ) (C. Besuchet) ( MHNG).

Redescription. Body 1.05–1.25 mm long, pubescence dense and fairly uniform consisting of long and flattened setae (length: 0.07–0.08 mm) on head, pronotum, elytra and abdomen, other suberect setae shorter (length: 0.03–0.04 mm) on antennae and legs and thin fluff on apical segment of maxillary palpi.

Head ( Figs 1A, 1D View FIGURES 1 A – F ) distinctly wider (0.27–0.31 mm) than long (0.18–0.19 mm), frontal lobe width 0.12–0.134 mm, front between antennal tubercles glossy with some punctures concentrated on sides; well-impressed and large median sulcus reaching vertexal foveae. Clypeal carina clearly visible in lateral view, occipital region with short median longitudinal carina. Segment II of maxillary palpi with 10–14 tubercles, segment III slightly longer than wide with 4–6 tubercles, apical segment of maxillary palpi ( Fig. 2D View FIGURES 2 A – E ) little more than 2 times longer (0.20–0.21 mm) than wide (0.08 mm). Antennae ( Fig. 2C View FIGURES 2 A – E ) 0.48–0.50 mm long with scapus about 2.5 times longer (0.12–0.13 mm) than wide (0.049–0.050 mm), antennomere II longer (0.05 mm) than wide (0.04 mm) and wide as scape, antennomere III slightly longer than wide, antennomeres IV and VIII subequal and wider than long, antennomeres IX and X distinctly transverse, XI about two times longer than wide, and longer than about 2 times combined length of IX and X.

Pronotum wider (0.30 mm) than long (0.23–0.24 mm), widest slightly before the middle, pleural carina barely visible, with deep antebasal sulcus.

Elitra width 0.50 mm, length 0.48–0.50 mm.

Metasternum with surface impressed by large and thick punctures.

Legs not particularly elongate, protrochanters and profemora without tubercles. Metatibiae 0.40–0.41 mm long.

Male. Winged and macrophthalmous (20–30 ommatidia) brown reddish with sometimes black abdomen, or micropterous and microphthalmous (6–10 ommatidia), body entirely pale brown. Occipital region with median longitudinal carina reaching about to posterior edge of vertexal foveae ( Fig. 1A View FIGURES 1 A – F ). Gular region ( Fig. 1C View FIGURES 1 A – F ) behind labium with deep and broad impression margined posteriorly by transverse ridge projecting on each side of head as sharp tubercle, this ridge with acute median process projecting ventrally bearing two tufts of modified setae at tips ( Fig. 1B View FIGURES 1 A – F ). Aedeagus ( Fig. 2E View FIGURES 2 A – E ) 0.26–0.28 mm long, ovoid with relatively short parameres that are sinuate and convergent, each bearing 3 bristles. Internal sac with 2 big and long teeth and 4 smaller and short spines.

Female. Occipital region with short median longitudinal carina reaching to about its middle ( Fig. 1D View FIGURES 1 A – F ). Wingless and microphthalmous with 2–6 ommatidia, entirely pale brown, gular region unmodified.

Notes. Besuchet (1962: 349) described Tychobythinus occidentalis based on two females (holotype and paratype) from Morocco (Tizi-n-Test) stating that this species is close to Tychobythinus algiricus from which it differs in its smaller size, narrower frontal lobe, and very reduced eyes. We have examined a long series of specimens of T. algiricus from Tunisia, Algeria, and Morocco which were compared favourably with the holotype and paratype of T. occidentalis , and found that all features used by Besuchet could be seen as simple gradation or variation within these series; so Tychobythinus occidentalis is here placed as the junior synonym of Tychobythinus algiricus (syn. nov.).

According to Raffray (1873: 366) the typical series of this species (with males and females) was collected in the Chiffa Gorges in moss and in the Boghari Forest under a large stone. In the collections of the MNHN we could not find any specimens with labels referring to these two localities, and only one female with the locality label “ Algeria ” and determination label “ Bythinus algiricus / Type ”, both handwritten by Raffray.

Distribution ( Fig. 3 View FIGURE 3 ). T. algiricus is a widespread species in the Maghreb ( Tunisia, Algeria, Morocco). Apart from the material examined it is reported from Fernana and Tebousouk ( Tunisia) ( Jeannel 1956: 69) and Tangeri ( Besuchet 1962: 349).

MHNG

Museum d'Histoire Naturelle

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Tychobythinus

Loc

Tychobythinus algiricus ( Raffray, 1871 )

Sabella, Giorgio, Viglianisi, Fabio Massimo, D’Urso, Vera & Nouira, Said 2014
2014
Loc

Tychobythinus algiricus Löbl & Besuchet 2004: 314

Lobl 2004: 314
2004
Loc

Tychobythinus remyi

Kocher 1969: 5
1969
Loc

Tychobythinus algericus

Besuchet 1999: 52
Ribera 1972: 137
Kocher 1969: 5
Besuchet 1962: 349
1962
Loc

Tychobythinus occidentalis

Besuchet 1962: 348
1962
Loc

Chiasmatobythus algiricus

Kocher 1958: 207
1958
Loc

Chiasmatobythus algericus

Jeannel 1956: 68
1956
Loc

Chiasmatobythus remyi

Besuchet 1999: 52
Kocher 1958: 208
Jeannel 1956: 69
1956
Loc

Bythinopsis algerica var. tunisea

Raffray 1924: 85
1924
Loc

Bythinopsis algirica

Normand 1935: 85
Escalera 1914: 99
Raffray 1911: 125
1911
Loc

Bythinopsis algerica

Raffray 1924: 85
Raffray 1908: 283
1908
Loc

Bythinopsis tunisea

Raffray 1908: 284
1908
Loc

Bryaxis (groupe V) algirica

Raffray 1904: 275
1904
Loc

Bythinus tuniseus

Peyerimhoff 1910: 289
Normand 1904: 218
Raffray 1904: 276
Pic 1901: 403
1901
Loc

Bythinus (Machaerites) algiricus

Reitter 1882: 483
1882
Loc

Bythinus algericus

Peyerimhoff 1910: 288
Normand 1904: 218
Pic 1901: 403
Raffray 1873: 366
1873
Loc

Bythinus algiricus

Raffray 1871: 160
1871
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF