Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 80. (Budapest 1988)

Steinmann, H.: A revision of the genus Acanthocordax Günther, 1929 (Dermaptera, Forficulidae)

joints; first joint very long, essentionally longer than distance between antennái bases, second quadrate, third about as long as fourth. — Pronotum about as long as wide, and narrower than the head; antero-lateral angles with a small tooth on each; lateral margins parallel and straight, posterior margin rounded; median longitudinal furrow indistinct. Tegmina and wings normally developed or wings concealed. — Abdomen fusiform, simple, a little depressed, smooth; lateral glandular folds on tergites 3-4 present. Ultimate tergite transverse, sloping, smooth, simple. Forceps (Fig. 5) straight, except the distal part, curved; dorsal tooth characteristic, comparatively short, but sharp and curved inwards. Forceps in lateral view (Fig. 6) strongly curved, undulate. — Genitalia (Fig. 7, gen. prep. No. 1001, det. Dr. H. Steinmann) characteristic; central parameral plate oval, large; virga within genital lobe very long, with S-shaped curvature basally; external parameres moderately small, obtuse. Female very similar to male, but forceps simple, straight, tapering. Length of body with forceps, in both sexes: 9.5-10 mm. H o 1 o t y p e male: New Guinea, 1965, legit Dr. J. Balogh, gen. prep. No. 213, det. Dr. H. Steinmann (deposited in the Hung. Nat. Hist. Mus., Budapest). — Paratypes: male, Chimbu Vy, N. G. (Bismarck Rge), open, 5-7500 ft, Oct'44 Darlington, gen. prep. No. 1001, det. Dr. H. Steinmann, 1 ex., and ditto, 1 female (deposited in the Mus. comp. Zool., Cambridge, Mass.), and 1 female ditto (deposited in the Hung. Nat. Hist. Mus., Budapest). Acanthocordax rhachynotus (HEBARD) 1933 Stenixus rhachynotus HEBARD: Mem. Qd. Mus. 10: 154, fig. 3 (male forceps), fig. 4 (pronotum). — Terra typica: New Guinea (Type male: Nat. Mus., Sydney). 1934 Acanthocordax rhachynotus: GÜNTHER, Konowia 13: 289. 1967 Acanthocordax papuanus rhachynotus : RAMAMURTHI, Ent. Meddr. 35: 257. 1968 Acanthocordax rhachynotus: POPHAM et BRINDLE, Entomologist 101: 278. Male head, and pronotum black or dark brown; antennae yellowish-brown basal two joints darker; tegmina and wings dark brown, reddish-brown to black; legs yellow; abdomen and forceps brown. — Head large, wider than the width of pronotum; tumid, postfrontal and coronal sutures distinct, well-marked; posterior margin convex in middle. Eyes large prominent, but a little shorter than distance between antennái bases, second transverse or quadrate, third and fourth about equal in length. — Pronotum longer than broad; antero-lateral angles each with a small tooth; lateral margins straight and parallel, posterior margin rounded; median longitudinal furrow distinct. Tegmina and wings fully developed. — Abdomen fusiform, a little widened medially, narrowed anteriorly and posteriorly; lateral glandular folds on tergites 3-4 present. Ultimate tergite sloping, smooth, simple, typical. Each branch of forceps (Fig. 8) slender, almost straight, slightly widened at extreme base, distal part with inner margin excavated and with a ventro-median tooth; dorsal tooth absent. — Genitalia (Fig. 9, gen. prep. No. 115, det. Dr. H. Steinmann) simple; central parameral plate oval, large, virga within genital lobe elongate; external parameres comparatively short and small. Female very similar to male, but furceps straight, slender, tapering, elliptical in cross-section basally, cylindrical apically. Length of body with forceps, in both sexes: 13-16 mm. Distribution: New Guinea.