Prothyma (Genoprothyma) hopkinsi bakeri Horn, 1914

Wiesner, Jürgen & Anichtchenko, Alexander, 2023, The Philippines species of the genus Prothyma Hope, 1838 (Coleoptera: Cicindelidae) Part 1: Subgenera Prothyma Hope, 1838, Genoprothyma Rivalier, 1964 and Parasymplecthyma subgen. nov., Zootaxa 5315 (1), pp. 1-36 : 17-19

Prothyma (Genoprothyma) hopkinsi bakeri Horn, 1914 ( Fig. 9 )

Prothyma Bakeri Horn 1914: 315 .

Type locality. “Malinao (Luzon merid., province Tayabas)”.

Prothyma Bakeri : Horn 1915: 437.

Prothyma hopkinsi bakeri: Horn 1923: 358 , 359.

Prothyma Hopkinsi Bakeri: Horn 1926: 99 ; Horn 1934: 145, f. 1.

Prothyma (Genoprothyma) Hopkinsi Bakeri : Rivalier 1964: 156.

Prothyma (Genoprothyma) hopkinsi bakeri: Wiesner 1980: 124 ; Wiesner 1992: 58; Cabras, Cabigas and Wiesner 2016: 192; Wiesner 2020: 138.

Type material. Holotype male: “ Malinao // Holotypus [printed, red] // Type / W. Horn ” ( SDEI).

Other material examined. 1 male: “ Malinao / Tayabas / Baker” ; 1 male, 1 female: “ Quezon Park / Tayabas, Luzon / P. I. V. 1. 31 // F. C. Hadden / collector”; 3 males, 2 females: Quezon Park / Tayabas, Luzon / P. I. VI. 19. 31 // F. C. Hadden / collector ”; 2 males: “Quezon Park / Hadden 1.6.36 ” ( SDEI) . 1 male: “ Atimonan, Luzon / Philippines / 17.v.1981 / T. Mizunuma leg.” ( MCZR) . 1 male: “ Atimonan / S. Luzon, Phil / 20. v. 1981 ” ( MCZR) . 1 male in ZSM, 1 female in CDc: “ Philippines / Luzon , Quezon / Quezon N. P. / 18. vi. 89 RN coll.” . 1 male, 1 female in JWc, 1 male in ZSM: “ Philippines, South / Luzon , Catanduanes / 4. 1990, leg. Lumawig ” .

Diagnosis. Prothyma (Genoprothyma) hopkinsi bakeri can be distinguished from the nominate subspecies by: 1, the bright bluish-green color of head, pronotum and elytral shoulders.

Description. Size: TL (without labrum) 11.0– 12.9 mm (mean = 11.9 mm, n = 18).

Head: Color shining black; with blue green or blue violet reflections on orbital plates, near pronotum, and basal part of genae; with blue violet reflections on apical half of genae; with blue-violet reflections on vertex and clypeus; surface glabrous, with two setigerous punctures next to eye, one along frontal margin and one dorsally at center; strong longitudinal striae on orbital plates and vertex; strong transversal striae behind the eyes, on neck and frons; striae becoming obsolete on genae, frons, and clypeus. Head as wide as elytra (mean EW/HW = 1.0). Labrum bicolored, ochre-testaceous, margins brownish, small black area basomedially. Labrum of male ( Fig. 9b ) wider than long (mean LW/LL = 1.5); with four setae located near the margin, two lateral and two apical; with two blunt anterolateral teeth and two outward directed thorn-like anterior teeth at the anteromedian lobe. Labrum of female ( Fig. 9c ) slightly wider than long (mean LW/LL = 1.2), with four setae located near the margin, two lateral and two apical; with two blunt anterolateral teeth and two outward directed thorn-like anterior teeth at the anteromedian lobe, intermediate space with a large triangular tooth. Mandibles brownish, with four teeth, darkened on margins, small area of base ochre-testaceous. Labial and maxillary palpi testaceous, the last segment shiny black. Antennae slender, reaching posteriorly to the middle of the elytra in males, shorter in females; scape bicolored, ochre-testaceous dorsally, black at venter, in some specimens completely ochre-testaceous; antennomeres two, three and four black with metallic luster, with ochre-testaceous part at the apex or wholly pale in some specimens; scape with one apical seta, the following three antennomeres almost glabrous; antennomeres five to eleven black, dull, finely, and evenly pubescent.

Thorax: Pronotum as long as wide (mean PW/PL = 1.0); sides slightly rounded between the transversal constrictions; glabrous, with shallow transverse striae on disc; shiny black with blue green to blue violet reflections dorsally; transversal constrictions with blue-green reflections; margins bluish; sternae and episternae glabrous, shiny black; mesepisternum of females with rounded pit above the center.

Elytra: ( Fig. 9d–f ) more than twice as long as wide (mean EL/EW = 2.2), parallel-sided, with a flattened basal hump, slightly bulged at the lateral margin in basal and apical half; dorsal surface shining black, in some specimens a little lighter at apex, with coppery-red reflections on the disc besides the suture, blue-green reflections at the humeral part; elytral testaceous maculation consists of a humeral dot, small or absent in some female specimens, a lateromedial dot in the form of an oblique backwards band, narrowing towards the tip in some specimens, and a transverse preapical dot; surface with dense and evenly spaced punctures, shallower towards the apex, becoming confluent and forming grooves near the suture; these grooves covers about the apical third of the elytra, not reaching the tip of the lateromedial spot, shallow in some specimens; apical margin distinctly rounded and slightly restricted towards middle suture, with a tiny sutural spine. Epipleurae black.

Ventral aspect: Venter glabrous, blackish blue violet; trochanter glabrous, coxa, femur, tibia, and tarsi setose; trochanter, coxa, basal half and in some specimens apical part of femur testaceous, remainder of legs brownish black, tibia with metallic luster.

Aedeagus: ( Fig. 10i–l ) in lateral view, slender in the basal third, then voluminously expanded to rapidly tapering again towards the apex, extending to a relatively short and blunt point (total length 3.1 mm).

Distribution. LUZON— Catanduanes; Quezon: Atimonan, Tayabas.

Figures

FIGURE 9. Prothyma (Genoprothyma) hopkinsi bakeri Horn, 1914. (a) Dorsal habitus male from Quezon Park, Tayabas, compared with the lectotype. Scale = 5 mm. (b–c. Labrum. Scale = 1 mm). (b) Male from Quezon Park, Tayabas. (c) Female from Quezon Park, Tayabas. (d–f, left elytron. Scale = 5 mm). (d) Male from Atimonan. (e) Male from Catanduanes. (f) Female from Quezon Park, Tayabas. (g) Aedeagus, left lateral view, from Quezon Park, Tayabas. Scale = 1 mm.

FIGURE 10. Variability of aedeagus structure of Prothyma (Genoprothyma) hopkinsi Horn, 1909. (a–h). hopkinsi hopkinsi: (a–d) Dingalan; (e–f) Mount Makiling; (g–h) Luisiana. (i–l). hopkinsi bakeri: (i–j) Atimonan; (k–l) Quezon Park, Tayabas. Scale = 1 mm.