Thyreocephalus guineensis (Bernhauer, 1912) Bernhauer, 1912

Janák, Jiří & Bordoni, Arnaldo, 2015, Revision of the genus Thyreocephalus and description of Afrus gen. nov. of Africa south of the Sahara (Coleoptera: Staphylinidae: Staphylininae), Zootaxa 4038 (1), pp. 1-94 : 67-70

publication ID	https://doi.org/ 10.11646/zootaxa.4038.1.1
publication LSID	lsid:zoobank.org:pub:1B62B78C-AA59-4417-A4FC-1CC9CED745E0
DOI	https://doi.org/10.5281/zenodo.6101687
persistent identifier	https://treatment.plazi.org/id/039D87F5-5579-FF84-FF4A-F8AAFCE6BCCA
treatment provided by	Plazi
scientific name	Thyreocephalus guineensis (Bernhauer, 1912)
status	comb. nov.

Treatment

Thyreocephalus guineensis (Bernhauer, 1912) View in CoL comb. nov.

(Figs. 166, 167, 172–177)

Eulissus guineensis Bernhauer, 1912a: 183 View in CoL ; Herman, 2001: 3627.

Type locality. Guinea (without additional data).

Type material. Syntype (sex indet.): GUINEA: “ Guinea ”, “ Syntypus ”, “ guineensis, Brnh. n. sp. ”, “ Thyreocephalus guineensis (Bernhauer) , J. Janák det. 2006” ( DEI). The specimen is devoid of the genital segment.

Additional material examined. CAMEROON: 1 spec.: Joko ( MFNB). CENTRAL AFRICAN REPUBLIC: 4 spec.: Uamgebiet, Bosum, 1-10.iv.1914, S. Tessmann ( MFNB, JJRC); 3 spec.: Uamgebiet, Bosum, 21–30.iv.1914 S. Tessmann ( MFNB, ABFI, JJRC). DEMOCRATIC REPUBLIC OF CONGO: 1 spec.: Zaire, Buje, 27.iii–4.iv.1975, A. Simonetta ( ABFI); 3 ♂: Route Kamituga à Bukavu, 1700m, 5.iv.1949, N. Leleup ( MRAC, JJRC). GHANA: 1 ♀: Manso, Amenfi, iv–vi.1968, ex coll. Breuning ( MRAC). IVORY COAST: 1 ♀: Côte d'Ivoire, Zepréghé, Daloa, iii.1962, J. Decelle ( MRAC). NIGER: 3 spec.: Oberssanga Kag., Beri b. Garnot, 26.ii–2.iii.1913, S. Tessmann ( MFNB, ABFI). NIGERIA: 3 ♂: Gashaka, Gumti NP, 560m, Kwano, 07°20´N; 11° 35´E, 25.4.– 3.5.2011, Kremitovský ( JJRC, VKBC).

Redescription. Body length 17–19 mm; length from anterior margin of head to posterior margin of elytra: 10– 11 mm. Dark reddish brown; elytra with a large yellow, lateral, anterior patch (Fig. 166); abdominal segment 7 completely or only on posterior third light red, segment 8 and genital segment light red. Head and pronotum and related punctation as in Figs. 167, 173; labrum as in Fig. 174 View FIGURES 173 – 177 . Pronotum shorter and narrower than head, markedly dilated anteriorly, with sinuate sides. Elytra as long and wide as pronotum, with very scarcely marked humeral angles. Surface with punctation arranged in four series, two near suture, one median and one lateral. Abdomen with fine, deep and dense punctation.

Male. Tergite 10 and sternite 9 of male genital segment as in Figs. 175, 176 View FIGURES 173 – 177 . Aedeagus ( Fig. 177 View FIGURES 173 – 177 ), very large, 3.4 mm long, oblong and proportionally narrow, with broad median lobe and long parameres; inner sac tape-like, very long, folded on itself, covered with scales.

Differential diagnosis. Thyreocephalus guineensis differs from T. paraferox in elytra with large yellow lateral patch and in different shape of the aedeagus with apically rounded median lobe.

Distribution. The species is distributed in Cameroon, Central African Republic, Democratic Republic of Congo, Ghana, Niger and Nigeria ( Fig. 172 View FIGURE 172 ).

Remarks. As the superior line of pronotal hypomeron is turning downwards well before middle, joining or almost joining inferior line next to front margin of procoxae and continuing onto anterior margin of pronotum, the species was transferred from Eulissus to Thyreocephalus .