Phobaeticus lumawigi Brock, 1997

Hennemann, Frank H. & Conle, Oskar V., 2008, Revision of Oriental Phasmatodea: The tribe Pharnaciini Günther, 1953, including the description of the world's longest insect, and a survey of the family Phasmatidae Gray, 1835 with keys to the subfamilies and tribes (Phasmatodea: " Anareolatae ": Phasmatidae), Zootaxa 1906, pp. 1-316 : 160-162

Phobaeticus lumawigi Brock, 1997

( Figs. 120, 253–254, 330, 384)

Phobaeticus lumawigi Brock, 1997: 43 , figs. 1–2 (♀). HT, ♀: Philippines, Mountain Province, North Luzon, VII.1996, leg. I. Lumawig; Holotype Phobaeticus lumawigi Brock (BMNH) . Otte & Brock, 2005: 269.

Diagnosis: Related to the second Philippine species of the genus, Ph. philippinicus (Hennemann & Conle, 1997) , and the Bornean Ph. redtenbacheri ( Dohrn, 1910) . Concerning to the length of the subgenital plate of ♀♀ (30 mm) which is longer than in the first (23.2 mm) but only about half the length of that in the latter species (56.0– 62.5 mm) it represents an intermediate (Fig. 254). It is easily distinguished from both species by: the smaller size; more slender and deeply notched anal segment (Fig. 253) and characteristic armature of the mid legs (Fig. 330). The shape of the head resembles Ph. kirbyi (Brunner v. Wattenwyl, 1907) from Borneo and Ph. palawanensis spec. nov. from Palawan, but the ♀♀ of the latter species are not known.

Etymology: Dedicated to Ismael O. Lumawig ( Philippines) the collector of the HT of this distinctive species.

Description: The unique HT was obviously discoloured by provisional conservation in ethanol and has the abdomen considerably shrunken. It is complete except for lacking the left fore leg and apices of the antennae. The left hind leg appears to have been regenerated. Taking typical discolouration of Phasmatodeans caused by ethanol into account, supposes the HT was either pale brown or dull green in live.

♀♀ ( Fig. 120). Long (body length 202.0 mm; including subgenital plate 211.0 mm) and slender species with a rather long and pointed subgenital plate (30.0 mm). General colouration of body and plain yellowish brown, head and pronotum slightly darker. Vertex with indistinct dark longitudinal lines on the vertex. Mesonotum with a fine dark brown longitudinal median line. Armature of the legs brown, the enlarged teeth of the mesofemora black towards the tip. Eyes dull reddish brown. Antennae pale greyish brown and becoming blackish basally; scapus and pedicellus pale yellowish brown. Head: Globose, slightly longer than wide and narrowed in posterior portion, vertex gently rounded. Between the bases of the antennae with a shallow transverse depression. Eyes circular, of moderate size and strongly convex; their length contained almost 3x in that of cheeks. Antennae slightly projecting over posterior margin of mesonotum (apical antennomeres broken in the HT). Scapus dorsoventrally flattened, almost 3x longer than wide, 2.5x longer than pedicellus and gently narrowed towards the base. Pedicellus round in cross-section and constricted towards apex.

Thorax: Pronotum slightly shorter but decidedly narrower than head, 1.5x longer than wide and almost parallel-sided. Median transverse depression distinct, curved and almost reaching to lateral margin of segment. Mesothorax about 3x longer than head and pronotum combined, mesonotum parallel-sided. Metanotum less than 1/3 the length of mesonotum, parallel-sided and about 2x longer than wide. Meso and metasternum simple.

Abdomen: Median segment slightly shorter than metanotum, anterior margin widely rounded. Abdominal segments II–VII roughly of equal length and almost 3x longer than wide. Praeopercular organ formed by two slender but pointed backward pointing spines at posterior margin of sternum VII. Tergite VIII 3/5 the length of VII and considerably narrower than II–VII. IX half the length of VIII, indistinctly longer than wide and rectangular. Anal segment slender, slightly longer than IX and the posterior margin with a broad and deep triangular excavation; posterolateral angles slender and acute (Fig. 254). Supraanal plate very small and triangular. Cerci slender, elongate and narrowing towards a pointed apex. Subgenital plate long, lanceolate, longitudinally keeled, projecting over abdomen by almost the combined length of tergites XI and X and tapered to a narrow apex (Fig. 253).

Legs: All very long and slender, profemora a little longer than pro- and mesothorax combined, mesofemora slightly shorter than mesonotum, metafemora reaching about half way along abdominal segment V and metatibiae projecting over tip of subgenital plate. Anterodorsal carina of profemora with about 20 acute, moderate serrations which decrease in size towards apex of femur. Posteroventral carina with a similar number of small teeth and a considerably more prominent, triangular tooth about one third away from the base. Protibiae unarmed except for a very few rather small dorsal teeth. Posterodorsal carina of mesofemora with two prominent, elongate and pointed triangular sub-basal teeth followd by a slightly smaller tooth in a distance of about 6 mm. Two outer ventral carinae each with a prominent, triangular spine almost beneath the pair of teeth on posterodorsal carina (Fig. 330). All carinae otherwise sparsely and minutely dentate. Medioventral carina set with a few very minute spines. Posterodorsal carina of meso- and metatibiae dorsally set with 3 slightly

enlarged, triangular teeth (very faint on metatibiae) and apically protruded into a small, rounded and dentate lobe. Probasitarsus about as long as remaining tarsomeres combined, all carinae unarmed. Meso- and metabasitarsi as following three tarsomeres combined; the ventral carinae with a few minute teeth.

Comments: Only known from the unique ♀ HT. ♂ and egg unknown.

Distribution (Fig. 384): Philippines (Northern Luzon Island: Mountain Province).

Number of specimens examined: 1