Serichlamys simpliciphallus Reemer sp. nov.

Figs 39, 43, 56, 57, 103–106, 149

Type material.

Holotype. Brazil • 1 ♂, holotype of Serichlamys simpliciphallus sp. nov.; São Paulo, Campos de Jordão; 28 Nov. 1957; K. Lenko leg.; MZUSP. Label 1: “ Campos de Jordão // S. Pãulo BRASIL // 28. XI. 1957 // K. Lenko leg. ”; label 2: “ Serichlamys sp. // Det. M. Reemer 2024 // Specimen code MR 1588 ” . Paratypes. Brazil • 1 ♂; São Paulo, Campos de Jordão; 19 Nov. 1957; K. Lenko leg.; MZUSP • 4 ♂; #; São Paulo, Campos de Jordão; 25 Nov. 1957; K. Lenko leg.; MZUSP • 1 ♂; Campos de Jordão; 26 Nov. 1957; K. Lenko leg.; MZUSP • 1 ♂; Campos de Jordão; 27 Nov. 1957; K. Lenko leg.; MZUSP • 3 ♂; Campos de Jordão; 28 Nov. 1957; K. Lenko leg.; MZUSP • 1 ♂; Campos de Jordão; 28 Nov. 1957; K. Lenko leg.; RMNH • 1 ♂; Itatiaya, Macieiras; 1960 m asl; 11 Nov. 1933; J. F. Zikán leg; MZUSP .

Additional specimens.

Brazil • 1 ♀; São Paulo, Campos de Jordão; 28 Nov. 1957; K. Lenko leg.; MZUSP .

Description

(based on holotype). Adult male Body size: 8 mm.

Head. Face occupying ~ 1 / 3 of head width in frontal view; shiny yellowish brown; white setulose. Gena yellow; white setulose. Oral margin laterally hardly produced. Frons brown; medially bare, laterally golden yellow setulose. Vertex brown; golden yellow setulose. Occiput brown except medially blackish; dorsal 1 / 2 golden yellow setulose, ventral 1 / 2 white setulose. Eye bare. Antenna orange-brown; antennal ratio as ~ 4: 1: 4.

Thorax. Scutum blackish with bronze sheen, margins brown; golden yellow setulose. Postpronotum and postalar callus brown; golden yellow setulose. Scutellum trapezoid, brown; golden yellow setulose; with two dorsoventrally flattened, spoon-shaped calcars as long as ~ 1 / 4 of scutellar length. Pleura brown. Anepisternum with shallow sulcus; golden yellow setulose anterodorsally and posterodorsally, widely bare medially and ventrally. Anepimeron golden yellow setulose. Katepisternum with patch of white setulae dorsally and a few white setulae ventrally. Katatergite long microtrichose, anatergite short microtrichose. Calypter and halter pale yellow.

Wing: hyaline; microtrichose, except bare on most of cell br (only microtrichose along vena spuria), posterobasal 1 / 5 of cell bm, anterobasal 1 / 5 of cell cup, and basomedian 2 / 5 of alula.

Legs: pale brown, with femora and hind metatarsus somewhat darker; yellow to white setulose. Coxae and trochanters brown; yellow to white setulose.

Abdomen. Tergites dark brown, except lateral margins and posterior margins of tergites 3 and 4 paler brown. Tergite 1 yellowish setulose. Tergite 2 with three large patches of grey microtrichiae, with narrow shiny parts in between; medially white setulose, laterally yellow setulose. Tergite 3 dull on most of surface, with lateral and posterior margins shiny; black setulose on dull parts, yellowish white setulose on shiny parts. Tergite 4 semi-shiny; golden yellow setulose laterally and posteriorly, black setulose anteriorly and medially. Sternites yellowish brown; yellowish white setulose. Genitalia as in Fig. 149.

Female. One female (see Additional specimens) probably belonging to this species was collected at the same site and date as one of the male paratypes. Apart from usual sexual dimorphism, no important differences were noted.

Diagnosis.

Body length: male 8–8.5 mm (n = 12), female 9 mm (n = 1). Together with S. serpentiphallus Reemer, sp. nov. and S. spathulata Reemer, sp. nov., this species belongs to a group of three species of which most (not all!) specimens have dorsoventrally flattened, spoon-shaped calcars on the scutellum (Figs 51–57). From S. spathulata Reemer, sp. nov. it differs by presence of separate patches of microtrichia on tergite 2 (Fig. 48), the brown postpedicel, and the structure of the male genitalia (Fig. 149). From S. simpliciphallus Reemer, sp. nov. this species can only be reliably distinguished by the structure of the male genitalia, most notably the shape of the phallus: S-shaped in S. serpentiphallus Reemer, sp. nov., straight in S. simpliciphallus Reemer, sp. nov. Other characters, such as colouration of integument and setulosity, as well as distribution of microtrichia on the tergites, were found to be too variable among the studied specimens. Females are undistinguishable from S. serpentiphallus Reemer, sp. nov. at present.

Molecular data.

An unidentified female specimen from Estação Biológica de Boracéia (Salesópolis, Sao Paulo, Brazil; CNC 1059093; GenBank PQ 629019) possibly belongs to S. simpliciphallus . Its DNA barcode clusters with the sequences of S. spathulata Reemer, sp. nov. (BS = 100).

Etymology.

The name simpliciphallus is a noun composed of the Latin words simplex (simplicity) and phallus (phallus). It refers to the ‘ simple’ shaped phallus of the male of this species, in contrast with the otherwise morphologically very similar S. serpentiphallus .

Distribution.

This species is only known from the Brazilian State of São Paulo.