Parena (Parena) stigmatica ( Fairmaire, 1899 )

Shi, Hongliang & Liang, Hongbin, 2023, Taxonomic revision of the genus Parena Motschulsky, 1860 (Coleoptera, Carabidae, Lebiini, Metallicina), Zootaxa 5286 (1), pp. 1-144 : 121-123

[37] Parena (Parena) stigmatica ( Fairmaire, 1899)

Habitus: Fig. 73A . Male genitalia: Fig. 74 .

Fairmaire, 1899: 76 (Original: Prymira ; type locality: Madagascar, Suberbieville; lectotype in MNHN); Csiki, 1932: 1455 ( Parena ); Jeannel, 1949: 973.

Type material examined. Prymira stigmatica Fairmaire : Lectotype (MNHN, Fig. 73A ), designated herein: male, body length = 9.7 mm, cardboard mounted, " stigmatica / maevatanan / type ", " J "[red label], "Madag / Sub erb lle / H. Perrier", "MUSEUM PARIS / Collection Leon Fairmaire / 1906" [blue label], "TYPE" [red label] " Prymira / stigmatica / Fair / Madag ", " HOLOTYPE / Prymira stigmatica / Fairmaire, 1899 / det. SHI H.L. 2011" < Fig. 74 >.

Notes on types. This species was originally described from an unspecified number of specimens from "Suberbieville", collected by H. Perrier. In the collection of MNHN, we found a male from the collection of Fairmaire perfectly according with the original description. We herein designate this specimen as the lectotype ( Fig. 73A ).

Non-type material examined. 1 female (MNHN), "Octobre", "Mt. d'Ambre, Madagascar", "MUSEUM PARIS MADAGASCAR, COLL A SICARD 1930", " Prymira stigmatica Fm ".

Comparisons. This species differs from all other species of subgenus Parena by the combination of: dorsum dark brown with evident lustre, elytra without pattern, postgenae with suborbital setae, and elytra disc strongly depressed. This species can be easily distinguished from all other African species for its dark color and distinct elytral depression. It is most similar to P. politissima in external appearance, but can be readily distinguished from the latter species by the presence of suborbital setae and very different geographical distribution.

Description. Body length 9.7–9.9 mm. Dorsum dark brown, strongly polished, elytra without pattern; mouthparts yellowish brown; basal four antennomeres reddish brown, apical ones same color or slightly darker; pronotal lateral explanations, elytra lateral margins and elytral suture reddish brown; legs reddish brown, metatrochanters yellowish brown; venter of thorax dark brown, abdomen sternum dark reddish brown. Vertex with sparse fine punctures; postgenae with a pair of suborbital setae; mentum with a pair of very short median setae. Pronotum sub-quadrate, PW/PL = 1.32–1.36, width subequal to head, PW/HW = 0.98–1.00; widest at anterior third, strongly sinuate before posterior angles; posterior angles nearly rectangular; lateral explanations wide; disc with sparse fine punctures and transverse wrinkles. Elytra slightly dilated to apices, with shallow isodiametric microsculpture; striae very shallow, only incised in discal depressions, with fine puncture rows, punctures absent near elytral apices; intervals flat, with very sparse fine punctures; discal depression large and deep, subtriangular, near anterior third of intervals 3 to 6; a small depression also present near base of interval 6, and then slightly convex before the main depression; apical truncation rounded, outer apical angles completely rounded; sutural angles not pointed. Males with biseriate adhesive setae on apical half of mesotarsomere 1 and almost full length of mesotarsomeres 2–3. Apex of abdominal sternite VII weakly emarginate in males. Median lobe of aedeagus slender (AL/AW = 5.6), ventral margin gradually swollen near middle; apical lamella thin, ovate in dorsal view, LL smaller than LW, apex rounded; in lateral view, apical lamella slightly bent upward. Endophallus with weakly chitinized primary sclerite, flared basal expansion large; flagellum ending near middle of median lobe; apical sclerite narrowly V-shaped, well-defined, basal core indistinct; basal sheath sparsely scaled, apical sheath densely scaled, larger than basal sheath; squamate sac not seen (due to endophallus of the only examined specimen partly everted, but it is very probably existed). Gonocoxite II of ovipositor nearly quadrate, apex concave, inner apical angle strongly pointed; with two ensiform setae on outer apical angle, three on inner apical angle.

Distribution ( Map 12 , blue). Only known from the northern half of Madagascar.

Figures

MAP 12. Distributions for species in the Parena (Parena) stigmatica group

FIGURE 73. Habitus of Parena (Parena) stigmatica species group. A Lectotype of Parena stigmatica (Fairmaire). B Holotype of Parena dorae Basilewsky. C Holotype of Parena fulva sp. n. D Paratype of Parena fulva sp. n., female from Zimbabwe. Scale bars = 2 mm.

FIGURE 74. Median lobe of male genitalia for Parena (Parena) stigmatica (Fairmaire), right-lateral (r), ventral (v), left-lateral (l), and dorsal (d) views, lectotype. Scale bar = 0.5 mm.