Prothyma (Symplecthyma) heteromallicollis Horn, 1909

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 : 86-87

Prothyma (Symplecthyma) heteromallicollis Horn, 1909 ( Figs 8–9 )

Prothyma heteromallicollis Horn 1909: 311 , 312, 313. Type locality. “ Philippinen ”.

Prothyma heteromallicollis: Horn 1910: 175 .

Prothyma lucidicollis heteromallicollis: Horn 1923: 359 ; Horn 1926: 100; Horn 1934: 145, f. 4.

Prothyma (Symplecthyma) heteromallicollis: Rivalier 1964: 161 ; Wiesner: 1980: 124; Trautner & Schawaller 1996: 48; Cassola 2000: 495.

Prothyma (Symplecthyma) heteromallicollis heteromallicollis: Wiesner 1992: 58 ; Cabras, Cabigas & Wiesner: 2016: 193; Cabras, Medina & Wiesner 2016: 139, 140, f. 1; Medina 220: 28, 29; Wiesner 2020: 139; Acal et al. 2021: 51 .

Type material. Holotype male: “Philipp.”, “Type! / Dr.W Horn”, “ Holotypus [red label]”, “f./ heteromal- / licollis / mihi”, “heteromalli- / collis | Horn [yellow label]”, “DEI Münchenberg / Col-14558 [green label]”, “SDEI Coleoptera / # 301940”, “Coll. DEI Eberswalde” ( SDEI).

Other material examined. MINDANAO: 3 males, 1 female: “ Philippines, Mindanao / Cabalinan Creek, Nabunturan / 3.5.2019, Anichtchenko A. leg. [7.605803, 125.953040]” (AAc) ; 1 female: “ Philippines, Mindanao / Maragusan, 700m, Marangig Falls / Candalaga Mts. / 7°20’28.4N, 126°10’19.8E, / 15– 20.10.2019 / Anichtchenko A. leg.” (AAc) ; 1 male: idem, but 3– 4.5.2019 (AAc) ; 1 male: “ Philippines, Mindanao / Compostela valley / Masara , viii.2014 / local collector [7.396203, 126.012429]” ( DUBC) ; 1 male: “ Philippines, Mindanao / Mabini , Compostela / valley, iii.2014 / local collector [7.286733, 125.876622]” ( DUBC) ; 14 males, 3 female: “ Philippines, Mindanao, Maragusan, 700m, Marangig Falls , Candalaga Mts. , 7.341898, 126.172710, 08–09.09.05.2023 Anichtchenko A. leg.“ ( DUBC, JWc, AAc) ; 1 male: “ Philippines, Mindanao, Davao. Or., Maragatas , Pangyan falls , 7.09136, 126.18405, 400m, 3.v.2023, Anichtchenko A. leg.“( DUBC) ; 1 male, 1 female: “ August 2018 / New Albay / Mindanao / Philippines [7.349656, 126.167027]” (WJc) ; 1 female: idem but September 2018 (WJc) ; 3 males: “ Davao de Oro / July 2018 ” (MMc) ; 1 male: “ April 2019 / Rosario, Agusan / Mindanao / Philippines [8.356519, 126.020760]” (WJc) ; 1 male: “ February 2019 / Loreto, Agusan / Mindanao / Philippines [8.176880, 125.842003]” (WJc) ; 1 male: “ Filippine Mindanao / Surigao del Sur / Luagon III.2019 ” (RSc). LUZON : 1 male: “Filippine-N Luzon / Cagayan / S. ta Ana VIII.2014 [18.472890, 122.159716]” (RSc) .

Diagnosis. Similar in appearance to P. aeneoparva and P. sciakyi sp. nov. Reliably distinguished by the structure of the aedeagus. In P. heteromallicollis aedeagus is elongated, with narrow base and relatively long and narrow apex, slightly downturned, while in the other two species aedeagus is shorter, sharply broadened right from base, with short and hooked apex. Elytra finely microreticulated ( Fig. 8b ).

Re-description. Size: TL (without labrum) 8.8–10.5 mm (mean = 9.7 mm; n = 36).

Head: slightly wider than elytra (mean EW/HW = 0.9). Dorsally color matte copper with weak greenish reflections; orbital plates copper; area behind the eye greenish-violet; genae blue-violet; clypeus with greenish-blue reflections; 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 zigzag striae on the frons, vertex, behind the eyes and on neck; striae becoming weak on genae and clypeus. Labrum golden-green, with red and purple reflections laterally. Labrum of male ( Fig. 8c ) wider than long (mean LW/LL = 1.29); 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 anterior teeth at the anteromedian lobe, intermediate space slightly convex. Labrum of female ( Fig. 8d ) as long as wide (mean LW/LL = 1), with two setae located near the lateral margins and two setae centrally, between midline and lateral margins in anterior fourth; with two blunt anterolateral teeth and two inward directed, curved teeth on the anterior margin at the anteromedian lobe, intermediate space with a long and slightly downturned triangular tooth. Mandibles light brownish, with four dark brown teeth. Labial and maxillary palpi testaceous, the last segment of both almost black. Antennae slender, reaching posteriorly to the middle of the elytra in the male, shorter in the females; scape dorsally ochre-testaceous, ventrally violet; antennomeres 2–4 brownish with metallic violet luster, two and three with lighter spot at apex; scape with one apical seta, the following three antennomeres almost glabrous; antennomeres 5–11 black, matte, finely, and evenly pubescent.

Thorax: pronotum slightly longer than wide (mean PW/PL = 0.88); sides weakly rounded between the transversal constrictions, nearly parallel-sided; glabrous; disc densely transversely wrinkled throughout; relatively dull; with copper reflections dorsally; transverse constrictions sometimes with blue and green reflections; margins bluish-green.

Elytra: ( Figs 8a, b ) twice as long as wide (mean EL/EW = 2.1), parallel-sided, with a dorsally flattened basal hump, dorsal surface finely microreticulated, dull copper brown, disc coppery-red with greenish stripes behind humeri; testaceous elytral maculation in males consists of humeral, lateromedial and preapical spots; the humeral spot is located at the humeri; the lateromedial spot is wide and oblique; the preapical spot rounded; in females humeral spot absent.Anterior third of elytra coarsely covered with relatively large and transverse punctures, towards the apices becoming narrower, more transverse and confluent, near the suture becoming denser and confluent; between preapical spots and apices of elytra forming a scale-like surface. Apical margin minutely serrate, distinctly rounded and restricted towards middle suture, with a minute sutural spine. Epipleurae black.

Ventral aspect: bluish-violet; pro- and mesocoxa testaceous, metacoxa violet with testaceous apex; trochanter glabrous, pro- and mesocoxa with 3–4 setae, metacoxa bisetose; femur, tibia, and tarsi setose. Leg coloration varies in specimens from within the same population, varies from completely yellow with only knees, apices of tibiae and tarsomeres darker, to dark brown, with or without metallic luster, with only basal half of femora testaceous. Trochanter and coxa testaceous. Protarsomeres 1–3 in males laterally and ventrally covered by long white setae.

Aedeagus: ( Fig. 9 ) median lobe elongate, in lateral view slender in the basal third, then gradually expanded to the middle and tapering again towards the elongate apex, the tip is moderately bent down. The spiral sclerite of endophallus at the base has two and half complete coils.

Distribution. Mindanao, locality from Luzon needs confirmation

Remarks. P. heteromallicollis was described from a single specimen with the label “ Philippinen ”. We do not know where its exact locality, maybe not even from Mindanao. The aedeagus of the holotype is featureless and intermediate, moreover is incompletely sclerotized Any attribution of species from Mindanao to this taxon must be considered tentative. All previous distributional data need confirmation. Previously it has been identified from Leyte ( Cassola 2000: 495), Mindanao: South Cotabato ( Cassola 2000: 495), Davao, Bukidnon, Lanao del Norte, and Misamis Oriental ( Acal et al. 2021: 51).

Figures

FIGURE 8. Prothyma (Symplecthyma) heteromallicollis Horn, 1909. a) Dorsal habitus, Holotype, male. b) Elytra, female. Scale = 5 mm. c) Head and labrum, male; d) Head and labrum, female. Scale = 1 mm.

FIGURE 9. Aedeagus of Prothyma (Symplecthyma) heteromallicollis Horn, 1909. a–b) Holotype; c–e) Luzon, Cagayan, St. Ana; f) Mindanao, Luagon; g–h) Mindanao, Nabunturan; i–j) Mindanao, Davao de Oro. Scale = 1 mm.