Ochthebius (Aulacochthebius) continentalis, Orchymont, 1929

Perkins, Philip D., 2023, Taxonomic revision of African water beetles in the genus Ochthebius Leach (1815) subgenus Aulacochthebius Kuwert (1887) (Coleoptera: Hydraenidae), Zootaxa 5228 (5), pp. 501-546 : 518-519

publication ID

https://doi.org/ 10.11646/zootaxa.5228.5.1

publication LSID

lsid:zoobank.org:pub:88FE61B0-65C6-4E22-8E18-B34BA534302C

DOI

https://doi.org/10.5281/zenodo.7544657

persistent identifier

https://treatment.plazi.org/id/942F8787-FFF4-635C-529D-1C37CDFEBF05

treatment provided by

Plazi

scientific name

Ochthebius (Aulacochthebius) continentalis
status

 

O. (Aulacochthebius) continentalis Orchymont View in CoL

Figs. 1 View FIGURE 1 , 4 View FIGURE 4 , 5 View FIGURE 5 , 9 View FIGURE 9 , 24 View FIGURES 24–26 , 27 View FIGURES 27–28

O. (Aulacochthebius) continentalis Orchymont 1929: 196 View in CoL

Type locality: “ Afrique Orientale Anglaise ” [i.e., Kenya]

Material examined (175): Angola: Pediva, ca. 30 mi. E. of Porto Alexandre, (16°17′4.2′′S, 12°33′46.8′′E), 26- 27.iv.1954, leg. J. Balfour-Browne (302) (22 NHMUK) GoogleMaps ; same locality, 27.iv.1954, leg. J. Balfour-Browne (303) (2 NHMUK) GoogleMaps ; Tampa , elev. 1219 m (15°30′S, 13°27′E), 15.vi.1954, leg. J. Balfour-Browne (274) (8 NHMUK) GoogleMaps ; Vana e Lombe, near Tampa, (15°30′S, 13°30′E), 14.vi.1954, leg. J. Balfour-Browne (269) (3 NHMUK) GoogleMaps ; Giraul, 5 mi. N. Mocamedes, sea level, in small sandy pools above beach, Stn. No. 282, (15°11′52.08′′S, 12°9′27.36′′E), 20.vi.1954, leg. J. Balfour-Browne (282) (12 NHMUK) GoogleMaps . Kenya: Kilifi Co., Kaloleni , 1.7km W of along road C107, KEN 16-33, 3.8148S 39.6149E, 181m, 29.I.2016, Large pond with sedge at edges as part of stream, 29.i.2016, leg. J. Bergsten & O. Bistrom (1 male KNM) GoogleMaps ; Kaloleni , road C107, KEN 16-32, 3.8155S 39.6229E, 174m, 29.i.2016, leg. J. Bergsten & O. Bistrom (1 male, 2 females KNM) GoogleMaps ; Taita _ Taveta Co., Gimba village, W side of Sagalla, Taita Hills , KEN 16-35, 3.4421S 38.55.77E, 653m, 30.I.2016, Partly dry streambed with pools and hygropetric sites over bedrock, 30.i.2016, leg. J. Bergsten & O. Bistrom (1 female KNM) . Namibia: Kaokoveld, Kunene River , Swartbooisdrift , (17°19′S, 13°49′E), 10.ii.1975, leg. Endrödy-Younga (#645) (3 TMSA) GoogleMaps . South Africa: Eastern Cape Province, Transkei: Qora River , (32°16′S, 28°47′E), 2.iii.1985, leg. Endrödy-Younga (#2179) (2 TMSA) GoogleMaps ; KwaZulu-Natal Province, Hluhluwe Game Res. , (28°5′S, 32°4′E), 19.xi.1992, leg. Endrödy-Younga (#2832) (10 TMSA) GoogleMaps ; same locality, 27.xi.1992, leg. Endrödy-Younga (#2861) (3 TMSA) GoogleMaps ; same locality, 27.xi.1992, leg. Endrödy-Younga (#2862) (9 TMSA) GoogleMaps ; Hluhluwe Game Reserve , (28°5′S, 32°4′E), 17.xi.1992, leg. Endrödy-Younga #2824 (#2824) (23 TMSA) GoogleMaps ; Mtubatuba , (28°22′S, 32°19′E), 4.iv.1974, leg. Endrödy-Younga (#318) (4 TMSA) GoogleMaps ; Ndumu Game Reserve , (26°53′S, 32°16′E), 12.vi.1989, leg. Endrödy-Younga & Klimaszewski (#2612) (2 TMSA) GoogleMaps ; Limpopo Province, N. Transvaal, Waterberg, Farm 223, Mogol River , (24°11′S, 27°50′E), 13.ii.1976, leg. A. Strydom, Endrödy-Younga (#1039) (17 TMSA) GoogleMaps ; Mpumalanga Province, Bundu Inn , (25°28′S, 28°55′E), 24.iii.1974, leg. Endrödy-Younga (#304) (8 TMSA) GoogleMaps ; c. Transvaal, Roodeplaat Dam , (25°37′S, 28°23′E), 14.viii.1974, leg. Endrödy-Younga (#359) (20 TMSA) GoogleMaps ; Kruger Nat. Pk., Letaba River below dam, (23°46′S, 31°30′E), 1.iii.1995, leg. Endrödy-Younga (#3122) (4 TMSA) GoogleMaps ; Nelshoogte galery forest below St., (25°51′S, 30°53′E), 2.xii.1986, leg. Endrödy-Younga (#2343) (1 TMSA) GoogleMaps .

Differential diagnosis. Differentiated from other members of the O. (A.) continentalis Group by the combination of the metaventral tabella surface on each side with slightly oblique longitudinal shallow groove with setigerous punctures, and by the aedeagus.

Redescription. Size: specimen from South Africa (length/width, mm): body (length to elytral apices) 1.30/0.62; head width 0.38; pronotum length 0.30, width at base 0.27, width at hyaline border 0.54; elytra 0.78/0.62. Habitus as illustrated ( Fig. 9 View FIGURE 9 ). Dorsum dark brown to black except hyaline borders of prothorax transparent. Eyes with moderately coarse, convex facets. Frons with deep impressions, borders of impressions rounded. Frons and clypeus densely punctate, rugulose, densely setose. Labrum anterior margin arcuate in both sexes.

Pronotum densely setose, moderately coarsely punctate except finely punctate on disc; anterior and posterior transverse impressions deep, anterior narrowly separated from shallow transverse impression immediately behind anterior margin of lateral lobe; median longitudinal impression deep, connecting anterior and posterior transverse impressions. Pronotum lateral hyaline borders wide, extended from posterior to anterior angles; sides of non-hyaline part with long conspicuous setae immediately above and resting on hyaline border; anterior and posterior hyaline borders narrow.

Elytra wider than non-hyaline part of pronotum, posteriorly rounded, sides arcuate; ten seriate-punctate, punctures large, deep, intervals narrow; each puncture with granule at anterior margin, and conspicuous decumbent seta that arches over puncture; lateral margin with row of short, arcuate setae that extend outward from margin in dry specimens.

Venter ( Fig. 9 View FIGURE 9 ): Mentum with sparse, moderately large setigerous punctures. Prosternum with very low midlongitudinal carina. Metaventrite tabella large, crown shaped, width ca. 0.56 width of metaventrite, slightly wider than long (ratio ca. 48:43), lateral angles slightly rounded, anterior angle prolonged as distinct carina that attains mesoventral intercoxal process; surface on each side with slightly oblique longitudinal shallow groove with setigerous punctures, area between grooves with few random setigerious punctures; setae along posterior margins longer than setae along anterior margins.Abdominal venter: first two ventrites and anterior margin and lateral areas of third with hydrofuge pubescence, remainder of ventrites dull, microreticulate, with sparse setae; setae longer on last ventrite (male).

Remarks. The specimen imaged ( Fig. 9 View FIGURE 9 ) has the following locality data: Kruger Nat. Pk., Letaba River below dam, (23°46′S, 31°30′E), 1.iii.1995, leg. Endrödy-Younga (#3122).

Distribution. Currently known from Angola, Kenya, Namibia, and South Africa ( Figs. 23 View FIGURES 22–23 , 26 View FIGURES 24–26 ).

NHMUK

Natural History Museum, London

TMSA

Transvaal Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Hydraenidae

Genus

Ochthebius

Loc

Ochthebius (Aulacochthebius) continentalis

Perkins, Philip D. 2023
2023
Loc

O. (Aulacochthebius) continentalis Orchymont 1929: 196

Orchymont. Robert 1929: 196
1929
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