Neoprocirrus Blackwelder

Herman, Lee, 2010, Generic Revision Of The Procirrina (Coleoptera: Staphylinidae: Paederinae: Pinophilini), Bulletin of the American Museum of Natural History 2010 (347), pp. 1-78 : 34-36

Neoprocirrus Blackwelder Figures 1, 2, 65

Neoprocirrus Blackwelder, 1952: 260 . Type species: Neoprocirrus drescheri Cameron, 1936: 42 , fixed by subsequent designation by Blackwelder (1952). (Note: Blackwelder’s designation of type species made the generic name available, so he is the author [ ICZN, 1999: Article 50.1].)

— Cameron, 1936: 42 (Note: Cameron proposed Neoprocirrus , but the name was unavailable because he failed to designate a type species [Article 13.3]; species included: drescheri , bor- neensis; characters). — Hammond, 1984: 203 (checklist; Borneo).

DIAGNOSIS: Neoprocirrus is separated from Paraprocirrus by the deep postocular grooves (fig. 2) on the venter of the head in the former and their absence in the latter and all other procirrine genera. Neoprocirrus has moderately developed basal angles on the head (figs. 1, 2); they are indistinct in Paraprocirrus . Antennomere 11 is about as long as the preceding three to seven antennomeres combined. The presence of setae on the edge of the posterior margin of the elytra will separate Neoprocirrus from Procirrus , Oedichirus , Palaminus , and Paraprocirrus .

DESCRIPTION: Head (figs. 1, 2) not pedunculate, slightly wider than long, with postocular margins convergent to basal angles; frontoclypeus with interantennal, transverse ridge along anterior margin; postocular lateral margin (fig. 2) slightly to moderately rounded and moderately convergent to basal angle; postocular margin moderately long; basal angle (figs. 1, 2) moderately developed; basal margin with weak marginal ridge laterad of neck and moderately emarginate across neck. Neck across nuchal constriction about half as wide as greatest postocular width of head; nuchal groove shallow; nuchal ridge absent. Eye length about equal to postocular length of head. Dorsal surface with reticulate punctation. Ventral surface with deep subocular groove (fig. 2). Gular sutures separated; sutures most approximate posteriorly. Gular surface punctate and with tiny setae anteriorly. Antennomere 11 longer than preceding three to seven antennomeres; apex without spiniform pencil of setae. Mandibles with apically bifid denticle; [**prostheca]. 1 Maxillary palpus with fourth palpomere about as long as or longer than third, asymmetrically fusiform or securiform. [**Labium, glossae]. [**Hypopharynx]. Labrum with or without two pairs of denticles on anterior margin. [**Epipharynx].

Prothorax (fig. 1) trapezoidiform, elongate, longer than wide; widest near anterior margin and lateral margins gradually curved and moderately convergent to base. Prono-

1 This structure and other similarly cited structures were unavailable for study.

tum with dense, coarse, reticulate punctation; punctation uniform and absent only from narrow, polished midlongitudinal strip extending for most of length from near anterior margin to near basal margin. Pronotal marginal ridge poorly developed, evident less as ridge and more as change in surface sculpturing with surface dorsad of ridge punctate, but impunctate and polished ventrad. Notosternal suture poorly developed, evident as shallow groove in broad depression; suture and marginal ridge separated. Prohypomeron polished and densely punctate. Postprocoxal lobe moderately long and punctate; transverse ridge absent; apex of each lobe moderately widely separated from each other. Probasisternum with median carina near coxae; surface densely punctate. Mesospiracular peritreme with anteromedial margin fused to furcasternum and with or without feeble suture near apex of furcasternum. Elytra (fig. 1) slightly shorter to longer than pronotum; humeral angles present; posterior edge with row of setae; subapical region without long, thicker, medioposteriorly directed seta near lateral corner. Scutellum with a few setae. Mesosternum without median carina. Mesocoxal acetabulum with marginal carina laterally and posteriorly. [**Intersternal suture].

Profemur with ridge near middle of anteroventral surface. Protibia with numerous combs extending from near base to near apex; tibia without depression on ctenidial surface; apical region neither constricted nor enlarged. Protarsomeres 1–4 inflated and ventral surface without setose pad; base of tarsomere 1 not surrounded by cupulate protibial apex; apical margin of tarsomere 4 not expanded beneath tarsomere 5 and not bilobed; tarsomere 5 unmodified and inserted laterad of middle of asymmetrical tarsomere 4; tarsomere 5 sparsely pubescent ventrally. Mesotarsomere and metatarsomere 1 longer than remaining tarsomeres combined.

Abdominal segments without imbricate macrosculpturing (cf. fig. 26). Segment III without paratergites; paratergal carina present and laterad of spiracle (as in fig. 23); tergum and sternum III fused. Segment VII with tergum and sternum separated. Segments IV to VII without oval ‘‘windows’’ in intersegmental membrane (cf. fig. 24). [**Sternum I]. [**Sterna IV to VI, glandular lobes]. Tergum IX (fig. 65) with base fused medially; apical emargination (fig. 65) shallow, about two fifths the length of tergum and narrow; lateroapical process (fig. 65) short, slender, curved ventrally, and extending beyond apical margin of tergum X; lateroapical process fused to remainder of segment. Tergum X (fig. 65) with apical margin truncate to shallowly rounded; base separated from tergum IX.

[**Female genital sclerites].

[**Aedeagus – glued to card but seemly too fragile to remove].

DISTRIBUTION AND HABITAT: Species of this genus are found on Java, Sumatra, and Malaysian Borneo. One, N. drescheri , was collected at an elevation of 4000 to 5000 feet ( Cameron, 1936: 42) and the other, N. borneensis , at 6000 feet ( Cameron, 1928: 439). More recently, three specimens of N. borneensis were taken from a moss forest at 1790 m (5907 feet) elevation in Mulu National Park, Sarawak, Malaysia. Guillaume de Rougemont (in litt., July 2007) found an undescribed species by sifting leaf litter in northern Sumatra. These sketchy data are all that are known about the habitat of the species.

The two described species of Neoprocirrus are known from only five specimens, four of them are N. borneensis . Little is known of the habitat. Undoubtedly other species will be found in mountainous regions of Indonesia and Malaysia. Guillaume de Rougemont (in litt., August 2007) reported that he collected perhaps 10 undescribed species in Borneo, Thailand, and Sri Lanka belonging to Neoprocirrus or to an undescribed genus.

DISCUSSION: Cameron (1936) described Neoprocirrus and included two species, but the genus was a nomen nudum because no type species was designated ( ICZN, 1999: Article 13.3); the name became available when Blackwelder (1952) designated the type species. However, although Cameron’s use of the generic name was unavailable, the species-group name, drescheri , which was described in the article with Neoprocirrus , was available as neither the validity nor availability of a genus-group name is required for an included species-group name to be available ( ICZN, 1999: Article 11.9.3.1). Neoprocirrus borneensis , originally placed in Paraprocirrus , was transferred by Cameron (1936: 42).

The two known species of Neoprocirrus can be separated by the length of the last antennomere and labral dentition. Antennomere 11 is about as long as antennomeres 8– 10 in N. drescheri and about as long as 4–10 in N. borneensis ; the former has a pair of labral denticles, the latter lacks them.

Neoprocirrus and Paraprocirrus are linked by the long apical antennomere, the subapical carina on the anterior margin of the frontoclypeus, and the inflated basal four protarsomeres. The procoxae of both genera are long, nearly as long as the profemora.

SPECIES INCLUDED AND

MATERIAL EXAMINED

borneensis (Cameron) – H, sp ( BMNH)... Malaysia drescheri Cameron – H ( BMNH).... Indonesia

UNDETERMINED SPECIMENS: Indonesia (Sumatra); Malaysia (Sabah).

DISSECTIONS: Abdominal dissection: Neoprocirrus sp. (1 male, Malaysia: Sabah).