Diario del proyecto Insects - Southern Africa (identified for the 1st time on iNat or difficult to identify)

28 de febrero de 2024

Homoneura rhodesi Curran 1938

Rusty reddish yellow; frons longer than wide; abdomen with incomplete median brown vitta; wings with six brown spots. Length, 4.5 mm.

Description & illustration of wing in:
Curran, C.H. 1938. The African Lauxaniidae (Diptera). Ameri-can Museum Novitates 979.

Face and front yellowish white, the frontal vitta yellow; occiputreddish yellow. Front distinctly longer than wide, with tiny blackish hairs on the anterior two-thirds; ocellars long and strong. Palpi yellow. Antennae reddish, the arista brown and short plumose.
Thorax yellow, the dorsum rusty reddish and with grayish-yellow pollen that does not obscure the ground color. The mesonotum bears a pair of broad obscure reddish-brown vittae lying just inside the dorsocentrals and the scutellum is of the same color except on the border and a slender median line. Three pairs of dorsocentrals.
Legs yellowish; anterior femora with a very weak comb on the apical third.
Wings cinereous hyaline, tinged with luteous in front, and bearing six brown spots, one over each of the crossveins, one on the end of the second vein and one slightly before it on the third vein, and spots before the apices of the third and fourth veins. Squamae rusty reddish, with tawny fringe. Halteres yellow.
Abdomen rusty reddish yellow, very thinly pollinose, the third, fourth and fifth segments each with median apical brown triangles that extend forward to form an interrupted, incomplete median vitta. Marginals on the second segment weak and not conspicuous.

Type locality: Harare, Zimbabwe

iNat observation: https://www.inaturalist.org/observations/192233947

Publicado el febrero 28, 2024 12:23 TARDE por traianbertau traianbertau | 0 comentarios | Deja un comentario

Sanazarius biseriatus Drake 1953

Genus Sanazarius: Body subovate, pubescent; head short, clypeus not surpassing apical half of first antennal segment; length of antennae subequal or shorter than that of pronotum; cephalic spines present; bucculae open anteriorly; pronotum tricarinate, height of median carina equal to or slightly shorter than that of lateral carinae; pronotal hood slightly bulbous, extending beyond the apex of head in dorsal view; paranotum expanded, produced near the middle, oriented subvertically; hemelytra with claval area weakly developed, almost entirely covered by posterior margin of pronotum; costal area narrow, with one or two rows of areolae; discoidal area level, extending beyond the middle of hemelytra; hypocostal laminae extending to the apex of abdomen

Sanazarius biseriatus
Diagnosis: Costal area of hemelytra with two rows of areolae ('biseriatus'). Paranota with rounded outer margins.

Distribution: Cape, South Africa.

Original description in:
Drake, C. J. 1953. A new genus and new species of Tingidae (Hemiptera). Proceedings of the Biological Society of Washington 66.

iNat observations:

Publicado el febrero 28, 2024 11:34 MAÑANA por traianbertau traianbertau | 0 comentarios | Deja un comentario

27 de febrero de 2024

Compseuta capensis (Walker 1873)

Pronotum without lateral keels with rounded lateral angles, with fine punctuation, light brown in colour, narrowly dark on the sides, lateral edge of the pronotum narrowly yellowish with a row of indistinct tiny areolae, costal edge of the hemelytra initially with very small areolae, slightly larger in the last third. Length 2.9-3.0 mm.

Original description in:
Walker, F. 1873. Catalogue of the specimens of Heteropterous Hemiptera in the Collection of the British Museum. Part VII

Key, redescription & illustration (figure 3) in:
Göllner-Scheiding, U. 2009. Revision der afrotropischen Arten der Gattung Compseuta Stål 1873. Beiträge zur Entomologie, vol. 59, no. 1

Distribution: South Africa (Kwazulu-Natal, Maputaland).

Host plant: Dalbergia armata

iNat observation: https://www.inaturalist.org/observations/175083436

Publicado el febrero 27, 2024 07:02 TARDE por traianbertau traianbertau | 0 comentarios | Deja un comentario

Compseuta holana Drake 1948

Lateral edge of the pronotum narrowly yellow with fine punctuation, pronotum unicolor dark shiny with light tip and three yellow longitudinal carinae, hemelytra yellowish, coarsely punctuated, costal edge with a single row of initially small, then larger areolae from about the middle. Length 3.2 mm.

Original description in:
Drake, C. J. 1948. The genus Compseuta STÅL (Hemiptera, Tingidae). Proceedings of the Entomological Society of Washington 50, no 8

Key, redescription & illustration (figure 6) in:
Göllner-Scheiding, U. 2009. Revision der afrotropischen Arten der Gattung Compseuta Stål 1873. Beiträge zur Entomologie, vol. 59, no. 1

Distribution Ethiopia, Botswana, DR Congo, Namibia, South Africa, Tanzania, Uganda and Zambia.

iNat observation:

Publicado el febrero 27, 2024 10:00 MAÑANA por traianbertau traianbertau | 0 comentarios | Deja un comentario

Chrysolina (Naluhia) acervata Bechyně 1948

Elytra red, covered with round dark spots, irregularly arranged, often confluent and asymmetrical. Elytral puncture rows mostly irregular (partly arranged in indistinct rows), with fine barly visible punctures among dense, irregular punctures in intervals. Dorsum rufous with black spots. Length 7.5 - 8.3 mm.

Type locality: 'Bas Congo'.
Recorded from Namibia (Zambezi Region)

Original description in:
Bechyně, J. 1948. Coléoptères d'Angola. Phytophaga, Chrysomelidae et Halticidae. Revue Suisse de Zoologie 55 (4, no. 29)

Key (page 452) and figure 18 in:
Bieńkowski, A. (2021) Book preview/manuscript. Chrysolina of the World. Taxonomic Review. 5b. Review Chrysolina-Pleurosticha.

iNat observation:

Publicado el febrero 27, 2024 08:14 MAÑANA por traianbertau traianbertau | 0 comentarios | Deja un comentario

26 de febrero de 2024

Chiliarchum bertolonii (Guérin-Méneville, 1844)

A distinctly costate Chiliarchum species in which, like C. freyi and C. arnoldi, the two basal impressions of the pronotum are located in the posterior angles.

Description in:
Haag-Rutenberg G. 1871. Beiträge zur Familie der Tenebrioniden (II. Stück). Coleopterologische Hefte 7
Translated from Latin:
Very large, elongated; thorax cordiform, near the posterior corner impressed, punctate, margin and impression white-tomentose; elytra elongate, with three distict costae, at the margin, towards apex widened, intervalls sometimes whitish-tomentose and very fine scabrous; slightly punctate below, mesosternal process, thorax ventrally and tibiae covered with a rusty-red tomentum.
Male: Slender, thorax more cordiform, abdominal segments 1-3 with large oblong reddish-brown spot. - Length 44-50 mm, width 16-17 mm.
Female: Broader, abdominal segments immaculate. - Length. 42-52 mm, witdh 17-20 mm.

Male illustrated in:
Guérin-Méneville, F. E. 1844. Insectes Magasin de Zoologie, D’ Anatomie Comparee et de Paleontologie, Recueil

iNat observation:

Publicado el febrero 26, 2024 03:39 TARDE por traianbertau traianbertau | 0 comentarios | Deja un comentario

24 de febrero de 2024

Glipidiomorpha obsoleta Franciscolo 1955

Original description with illustration in:
Franciscolo, M. E. 1955. Mordellidae and Scraptiidae in the Collections of the Durban Museum (XXIX. Contribution to the Knowledge of Mordellidae and Scraptiidae). Part I. Durban Museum Novitates, Vol. IV. Part XII

Hind tibiae with a distinct dorso-lateral ridge, hairy eyes, elytra with file-like sculpture. The upper surface is prevailingly covered by grey pubescent markings, as shown in the figure; the pronotum bears three small areas covered by black hairs, one elongate at middle, and one at each side of it; maxillary palpi ferrugineous; front and middle tarsi a little clearer; anterior femora rusty-reddish. Pubescent markings of elytra of moderate size, leaving free large black spots (see figure); the postmedian pubescent band is normally sinuous on each elytron; pygidium covered with whitish pubescence, leaving a small subtriangular black spot at base.

Type locality: Chirinda Forest, Zimbabwe

iNat observation: https://www.inaturalist.org/observations/111636146

Publicado el febrero 24, 2024 06:57 TARDE por traianbertau traianbertau | 0 comentarios | Deja un comentario

Sphaeromorda natalensis Franciscolo 1950

Original description in:
Franciscolo, M. E. 1950. Ermischiella papuana n. gen. n. sp. di Mordellide della Nuova Guinea e diagnosi preliminari di tre nuovi generi africani (16 Contributo alla conoscenza dei Mordellidae).

Redescription with illustrations in:
Franciscolo, M. E. 1956. Mordellidae and Scraptiidae in the Collections of the Durban Museum (XXIX. Contribution to the Knowledge of Mordellidae and Scraptiidae). Part II Durban Museum Novitates, Vol. IV. Part XIV

Body shape extremely wide, short and convex. Colour black; the black surface of the body, mainly head and thorax, has a bluish violaceous shine. Ground pubescence dark, with violaceous or reddish violaceous shine on head and thorax, but with no shine at all on the elytra and undersurfaces. Scutellum covered by dense, long, shiny golden white pubescence, with dense file-like sculpture. Elytra (figure) extremely convex and wide, file-like punctation, very regularly and separately rounded at apex. Ground pubescence black, with no shine at all, with markings of whitish hairs distributed as indicated in the figure.

Type locality: Umhlanga, Durban (KZN, South Africa)

iNat observation: https://www.inaturalist.org/observations/139509787

Publicado el febrero 24, 2024 06:09 TARDE por traianbertau traianbertau | 0 comentarios | Deja un comentario

Calognathus chevrolati chevrolati Guérin-Méneville 1836

Calognathus chevrolati is a black tenebrionid with pale scale-like setae covering some areas. The pronotum is broader than long and the head is nearly as large as the pronotum. The tarsi are compressed laterally and have long setae forming sand-shoes for digging. Males have the long, slender, anteriorly projecting mandibles. There are 4 subspecies described.

Calognathus chevrolati chevrolati:
Mandibles of males strong and angularly arcuate, with strong and long basal crest. Pronotum more than twice as wide as long, basal margin doubly arcuate. Elytra almost as wide as long, cordiform, strongly deplanate. The entire dorsum of the head with the exception of the clypeal margin, as well as entire disc of pronotum, densely covered with scale-like hairs; pubescence bicoloured: whitish behind clypeal margin and lateral parts of pronotum, brown on vertex and median part of pronotum, A broad lateral band and broad sutural margin of elytra with similar pubescence to that of head and pronotum, in whitish to light brown colour. A narrow, almost rectilinear V-shaped area of each elytron either completely bare (males), or brown pubescent and only apically bare and black (females).

Distribution: north and south of the Orange river.

Description and illustration in:
Koch, C. 1950. The Tenebrionidae of Southern Africa. I. First account of the Tenebrionidae collected on the University of California-Transvaal Museum Expedition, 1948. Annals of the Transvaal Museum, 21

iNat observation: https://www.inaturalist.org/observations/188002707

Publicado el febrero 24, 2024 02:28 TARDE por traianbertau traianbertau | 0 comentarios | Deja un comentario

23 de febrero de 2024

Asthenochirus plicatulus Fairmaire 1884

Subovate, very convex, black, covered with pale and yellow setae. Pronotum two and a half times as wide as it is long. Head anteriorly with transverse furrow. Elytra coarsely punctate and striped, the stripes with transverse folds, epipleura punctate.

Original description in:
Fairmaire, L. 1884. DESCRIPTION OF NEW SPECIES OF SOUTH-AFRICAN TENEBRIONIDÆ. Transactions of the South African Philosophical Society, 4(2), 197–199. doi:10.1080/21560382.1884.9526207

Distrubution: South Africa, Eswatini; Zimbabwe; Namibia.

iNat observations: https://www.inaturalist.org/taxa/651670-Asthenochirus-plicatulus/browse_photos

Publicado el febrero 23, 2024 05:30 TARDE por traianbertau traianbertau | 0 comentarios | Deja un comentario