Taxonomic revision of Afrotropical Laccophilus Leach, 1815 (Coleoptera, Dytiscidae) Author Bistroem, Olof Author Nilsson, Anders N. Author Bergsten, Johannes text ZooKeys 2015 542 1 379 http://dx.doi.org/10.3897/zookeys.542.5975 journal article http://dx.doi.org/10.3897/zookeys.542.5975 1313-2970-542-1 026407877355425BAB10BF1674510F12 Taxon classification Animalia Coleoptera Dytiscidae Laccophilus tschoffeni Regimbart , 1892 Figs 130-131, 318-319, 464, 562 Laccophilus tschoffeni Regimbart ; Severin 1892 : 472 (type material in IRSNB; no description); Regimbart 1895 : 139 (original description, faunistics); Zimmermann 1920a : 27 (catalogue, faunistics); Guignot 1943 : 98 (faunistics); Guignot 1952e : 168 (discussion, correction of earlier misidentification); Guignot 1953d : 1 (discussion); Guignot 1954 : 26 (discussion); Guignot 1955b : 1096 (discussion); Guignot 1956b : 219 (discussion, faunistics); Guignot 1959a : 533, 535, 537, 564 (descrip tion , discussion, faunistics); Nilsson 2001 : 252 (catalogue, faunistics); Nilsson 2015 : 218 (catalogue, faunistics). Type locality. Zaire: Boma. Type material studied (7 exs.). Lectotype (by present designation): male: "Banana Boma M. Tschoffen 91 Det. Regimb . 91 / 11176 / Regimbart det, 1891 Laccophilus tschoffeni Reg." (IRSNB). - Paralectotypes: Same data as lectotype (3 exs. IRSNB; habitus in Fig. 464); "Boma M. Tschoffen / Laccophilus tschoffeni Reg." (1 ex. IRSNB); "Matadi M. Tschoffen / Laccophilus tschoffeni Reg . Typus / Regimbart 1895 Laccophilus tschoffeni Reg . / Type" (1 ex. IRSNB); "Severin Banana Africa / Banana Boma M. Tshoffen 91 Det . Regimb . / Laccophilus tschoffeni Type Regimb . / Type" (1 ex. RMNH). Additional material studied (2 exs.). Zaire:"Congo Boma M. Tshoffen" (2 exs. SAMC; possibly type material). Diagnosis. Laccophilus tschoffeni is particularly distinguished by the volumnious male genitalia, and therefore it is not to be confused with any other African Laccophilus species; penis in lateral aspect curved, apically provided with membranous, rather narrow flaps. Description. Body length 4.3-4.5 mm, width 2.40 mm. Habitus and dorsal colour pattern of body as in Fig. 464. Head: Pale ferrugineous. Submat, rather finely but distinctly microsculptured. Reticulation double; large meshes only slightly more strongly developed than fine meshes. In part, large meshes indistinct. When discernible, large meshes contain 4-8 small meshes. Almost impunctate, except at eyes, with sparse, fine punctures. Punctate area extends towards middle of head. Pronotum: Pale ferrugineous, basally with vague darker marking. Submat, finely microsculptured. Extensively with double reticulation but difference between mesh-categories in part indistinct. At margins, pronotum with scattered fine punctures. Elytra: Dark ferrugineous to ferrugineous, with irrorations, except on pale ferrugineous, basal transverse area (Fig. 464). Irrorations are sparser on a somewhat vague, transverse area posterior to middle. Finely reticulated; reticulation extensively double. Punctures fine and scattered; clear rows cannot be distinguished. Pre-apical, lateral furrow punctate and finely pubescent. Ventral aspect: Ferrugineous to pale ferrugineous. Prosternal process slender, apically pointed. Almost impunctate; irregularly distributed, hardly visible, punctures are discernible. Rather shiny, very finely microsculptured. Basal ventrites finely striated. Apical ventrite with a minute ridge, as in Fig. 130. Legs: Pale ferrugineous to ferrugineous. Protarsus rather slender, claws slightly curved and somewhat prolonged. Tarsi provided with suckers. Male genitalia: Penis large, voluminous; in lateral aspect medially bent, curved, apically provided with membranous, rather narrow flaps (Figs 318-319). Female: Apical ventrite symmetric, lacks ridge (Fig. 131). Distribution. Zaire (Fig. 562). Collecting circumstances. Unknown.