Laemophloeus mathani Grouvelle, 1889:108

Thomas, Michael C., 2014, A review of New World Laemophloeus Dejean (Coleoptera: Laemophloeidae): 2. Neotropical species with antennal club of three antennomeres, Insecta Mundi 2014 (363), pp. 1-38 : 10-11

Laemophloeus mathani Grouvelle, 1889:108

Fig. 10, 39-43

Laemophloeus mathani Grouvelle, 1889:108

Types: The type of this species could not be located in the MNHN. A specimen in the MNHN bearing the data: “Goyaz” [Goiás] ” Bresil ”/”tres voisin Mathani Grouv [in Grouvelle’s hand]/”MUSEUM PARIS COLL. A. GROUVELLE 1917” belongs to L. incisus Sharp. I am basing my concept of this species on the original description and, especially, the illustration supplied by Grouvelle (1889), which clearly shows the characteristic shape of the pronotum and the lack of deep epistomal emarginations over the antennae.

Diagnosis: The following combination of characters is diagnostic for this species: Length, 1.7mm - 2.4mm; body entirely testaceous to castaneous ( Fig. 10); pronotum without antebasal denticle and lateral margin not or barely sinuate before posterior angle ( Fig. 40-41 ); males without emargination over antennal insertion ( Fig. 39 ); and in large specimens an elongate elliptical antennomere XI that is about as long as the combined length of the two preceding antennomeres; male genitalia ( Fig. 42-43 ) with narrowly triangular basal plates, complex armature of internal sac, and parameres with four pairs of setae, the inner basal pair located at about midpoint of paramere and thicker but shorter than the outer pair which are located basally; two pairs of secondary setae are located between the basal seta and margin and on the lateral margin near the apex. Females are similar to those of L. incisus , but the lateral pronotal margins of that species generally are more sinuate.

Distribution. South America.

Neotropical specimens examined. 152, BOLIVIA: Santa Cruz: 3.7km SSE Buena Vista, Hotel Flora & Fauna ; Potrerillos del Guendá , 40km NW Santa Cruz ; El Refugio Los Volcanes; 5km ESE Warnes, Hotel Rio Selva ; BRAZIL: Goiás: Jataí ; Rondônia: 62km SW Ariquemes , near Fazenda Rancho Grande ; ECUADOR: Sucumbios: Shushufindi , 215m. ; PERU: Loreto: 60km SW from Iquitos to Nauta, Rio Icaya , 120m. ; 68km SW from Iquits to Nauta, Rio Itaya , 110m. ; SURINAME: Brokopondo: Ston Eiland Eco-Resort near Brownsberg ; Para: jct. rd. to Overbridge River Resort and Brownsberg Rd. All in FSCA .

Discussion. Specimens from Suriname tend to be castaneous in color versus pale testaceous in specimens from other localities, but differ in no other way.

Figures

Figures 39-43. Laemophloeus mathani Grouvelle. 39) Head, male. 40) Pronotum, male. 41) Head and pronotum, male. 42) Median lobe. 43) Tegmen.