Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 77. (Budapest 1985)

Steinmann, H.: A revision of the genus Chaetolabia Brindle, 1972 (Dermaptera, Labiidae)

(holotype) or coronal suture well marked, long (paratype). Posterior margin of head concave in middle. Eyes small, typical.

—Antennae 11-jointed; first joint comparatively long, about as long as distance between antennái bases ; second transverse, third joint a little longer than fourth. —

P r o n o t u m quadrate, lateral margins straight, finely narrowed posteriorly ; last margin convex; median longitudinal furrow present. Tegmina and wings short.

—Abdomen fusiform, lateral glandular folds on third and fourth tergites small. Ultimate tergite transverse, posterior margin insinuate.

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P y g i d i u m characteristic, posterior margin with small, bifid tubercle medially. Each branch of forceps (Fig. 3) arcuate, inner margin with a sharp tooth near mid-point. — Genitalia (Fig. 4) specific, very simple; central parameral plate narrow and comparatively short, virga within genital lobe short; external paramere large, with parallel outer and inner sides medially; apex obtuse.

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F e m a 1 e unknown.

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L e n g t h of body with forceps : 7 mm. Holotype male: New Guinea, Wau, Nami Creek, 1968, legit Dr. J. Balogh, gen. prep. No. 856, det. Dr. H. Steinmann.

—Deposited in the Hungarian Natural History Museum, Budapest. Chaetolabia socculata sp.n. (Figs 5-6) Male head, antennae, pronotum, legs except femora apically, tegmina and wings dark brownish black; abdomen with forceps dark reddish brown. Cuticle strongly punctured and pubescent, tegmina and wings a little coriaceous.

—Head large; postfrontal and coronal sutures distinct; lateral margins with postero-lateral angles of head rounded, posterior margin concave medially. Eyes small, typical.

—First antennái joint comparatively long, about as long as distance between antenna! bases; second quadrate, third joint slightly longer than fourth.

—Pronotum about as long as wide; lateral margins straight, a little narrowed posteriorly, last margin rounded; median longitudinal furrow present. Tegmina and wings fully developed.

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A b d o m e n a little depressed, tergites with sparse marginal hairs. Ultimate tergite simple, broad, a little depressed medially.

—Pygidium small, simple, transverse; posterior margin straight, but postero-lateral angles rounded. Each branch of forceps (Fig. 5) simple, inner margins without tooth or teeth, branches strongly trigonal in cross-section basally and medially, cylindrical apically.

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G e n i t a 1 i a (Fig. 6) specific; central parameral plate strongly narrowed basally, and widened apically; virga within genital lobe short, and associated with a smaller, but strongly sclerotized plate basally; external paramere specific, broad, gibbous basally, and acuminate apically.

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F e m a 1 e unknown.

— Length of body with forceps : 7 mm. Holotype male: Solomon Islands, Guadalcanal, I. Poha River, 6. X. 1957, J. L. Gressit Collector, Bishop Museum, gen. prep. No. 851, det. Dr. H. Steinmann.

—Deposited in the Bishop Museum, Honolulu, Hawaii (USA). Chaetolabia nebulosa sp. n. (Figs 7-8) Male general colour yellowish brown; abdominal tergites and forceps reddish yellow. Cuticle shining, finely punctured and pubescent ; pronotum with long setae laterally.

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H e a d longer than broad ; tumid ; postfrontal and coronal sutures visible ; lateral margins behind eyes with posterolateral angles rounded; posterior margin emarginate in middle.

—Eyes small.

—Antennae 13-jointed; first joint long, about as long as distance between antennái bases; second quadrate, third joint about as long as fourth.

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P r o n o t u m essentially longer than broad; lateral margins straight and widened posteriorly; posterior margin weakly convex; median longitudinal furrow distinct. Tegmina short, one and half times as long as pronotum; wings absent.

—Abdomen comparatively long, a little depressed, strongly narrowed basally; ultimate tergite broad, simple. —

P y g i d i u m trigonal, a little flattened, apex obtuse. Each branch of forceps (Fig. 7) arcuate, trigonal in cross-section basally, cylindrical medially and apically; ventral inner margin with a small tooth near pygidium, and a second near paex.

—Genitalia (Fig. 8) characteristic; central parameral plate large, fully developed; virga within genital lobe very thick, and associated with a specific sclerotized plate ; external paramere very large, outer margin undulate.

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F e m a 1 e unknown.

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L e n g t h of body with forceps: 12.5-13.5 mm. Holotype male: Fiji, Nandanivatu, Navai Mill, X. 28. 37. JM Valentine Collector, gen. prep. No. 852, det. Dr. H. Steinmann (deposited in the Bishop Museum, Honolulu, Hawaii, USA). —

P a r a t y p e male, 1 ex., ditto (deposited in the Hungarian Natural History Museum, Budapest).