Prothyma (Symplecthyma) incerata Rivalier, 1964

Anichtchenko, Alexander & Wiesner, Jürgen, 2023, Philippine species of the genus Prothyma Hope, 1838 (Coleoptera: Cicindelidae). Part 2. Subgenus Symplecthyma Rivalier, 1964, Zootaxa 5357 (1), pp. 71-99 : 89-91

Prothyma (Symplecthyma) incerata Rivalier, 1964 ( Figs 10 , 15a )

Prothyma (Symplecthyma) incerata Rivalier 1964: 162 , f. 18, 163, f. 19.

Type locality: “ Philippines / Ch. Semper ” .

Prothyma (Symplecthyma) incerata: Wiesner 1980: 124 ; Wiesner 1992: 59; Cassola 2000: 494, 495; Cabras, Cabigas & Wiesner: 193; Wiesner 2020: 139.

Type material. Holotype, male: “ Philippines / Ch. Semper ”, “Museum Paris / 1952 / Coll R Oberthür”, “1314”, “Type”, “incerata / Rivalier” ( MNHN).

Diagnosis. Belongs to the group of species with yellow venter. Easily distinguished from the similar species P. inopinata sp. nov. by smaller body size, smoothed wrinkles on frons and pronotum, and by highly lustrous, faintly punctured elytra.

Re-description. Size: TL (without labrum) 10 mm (10 mm; n = 1).

Head: slightly wider than elytra (EW/HW = 0.89). Dorsally color shining metallic dark red; area behind the eye with blue reflections; clypeus coppery-red; surface glabrous, with two setigerous punctures next to eye, one along frontal margin and one dorsally at center; longitudinal striae on orbital plates moderately deep; on vertex wavy rugate; striae becoming not evident on clypeus, frons, genae and neck. Labrum golden-green, laterally with red reflections. Labrum of male wider than long (LW/LL = 1.5); with two setae located near the lateral margins and two setae centrally, between midline and lateral margins in anterior fourth; with two obtuse anterolateral teeth and two obtuse teeth at the anteromedian lobe, intermediate space slightly convex. Mandibles light brownish, with four brown teeth. Antennae slender, almost reaching posteriorly to the middle of the elytra in in the females; scape and antennomeres 2–4 ochre-testaceous; scape with one apical seta, the succeeding three antennomeres almost glabrous; antennomeres 5–11 brown, matte, finely, and evenly pubescent.

Thorax: pronotum slightly longer than wide (PW/PL = 0.86); sides weakly rounded between the transversal constrictions, nearly parallel-sided; glabrous; transverse wrinkles effaced throughout; black with reddish reflections dorsally; transverse constrictions with blue and green reflections; margins widely bluish-green.

Elytra: ( Fig. 10a ) slightly more than twice as long as wide (EL/EW = 2.1), parallel-sided, with a dorsally flattened basal hump, dorsal surface without microreticulation, shiny brown, disc with weak coppery luster; testaceous elytral maculations in males consists of humeral, lateromedial and preapical spots; the humeral spot is large and located at the humeri, almost reaching suture; the lateromedial spot is wide and transverse; the preapical spot large and rounded, reaching lateral margin. Elytra are uniformly and sparsely covered by small transverse punctures. Apical margin minutely serrate, distinctly rounded, and restricted towards middle suture, with a minute sutural spine. Epipleurae brown.

Ventral aspect: venter glabrous, sternae and episternae glabrous; meso-, metathorax and abdomen light brown; trochanter glabrous, coxa, femur, tibia, and tarsi setose. Legs light brown, tarsa and femora slightly darker. Protarsomeres 2–3 in males laterally and ventrally covered by long white setae.

Aedeagus: ( Figs 10b, c ) median lobe short, in lateral view abruptly widened immediately from the base and tapering again towards the short and blunt apex, the tip in the shape of hook. The spiral sclerite of endophallus at the base has one complete coil.

Distribution. The exact locality and habitat of this species is unknown. The only known specimen has the label “ Philippines ”.

Figures

FIGURE 10. Prothyma (Symplecthyma) incerata Rivalier, 1964. a) Dorsal habitus holotype, male. Scale = 5 mm. b) Aedeagus. c) Endophallus. Drawings from (Rivalier, 1964).

FIGURE 15. Head and pronotum of Symplecthyma species. a) P. (S.) incerata Rivalier, 1964; b) P. (S.) inopinata sp. nov.; c) P. (S.) kapuka sp. nov. Scale = 1 mm.